compile

beacon_node/beacon_chain/src/beacon_chain.rs

@@ -101,6 +101,8 @@ use types::*;
 
 pub use crate::canonical_head::{CanonicalHead, CanonicalHeadRwLock};
 pub use fork_choice::CountUnrealized;
+use types::kzg_commitment::KzgCommitment;
+use types::signed_blobs_sidecar::SignedBlobsSidecar;
 
 pub type ForkChoiceError = fork_choice::Error<crate::ForkChoiceStoreError>;
 
@@ -375,6 +377,8 @@ pub struct BeaconChain<T: BeaconChainTypes> {
     /// Sender given to tasks, so that if they encounter a state in which execution cannot
     /// continue they can request that everything shuts down.
     pub shutdown_sender: Sender<ShutdownReason>,
+    pub block_waiting_for_sidecar: Mutex<Option<GossipVerifiedBlock<T>>>,
+    pub sidecar_waiting_for_block: Mutex<Option<Arc<SignedBlobsSidecar<T::EthSpec>>>>,
     /// Logging to CLI, etc.
     pub(crate) log: Logger,
     /// Arbitrary bytes included in the blocks.
@@ -2436,6 +2440,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
         self: &Arc<Self>,
         block_root: Hash256,
         unverified_block: B,
+        sidecar: Option<Arc<SignedBlobsSidecar<T::EthSpec>>>,
         count_unrealized: CountUnrealized,
     ) -> Result<Hash256, BlockError<T::EthSpec>> {
         // Start the Prometheus timer.
@@ -2453,7 +2458,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
             let execution_pending =
                 unverified_block.into_execution_pending_block(block_root, &chain)?;
             chain
-                .import_execution_pending_block(execution_pending, count_unrealized)
+                .import_execution_pending_block(execution_pending, sidecar, count_unrealized)
                 .await
         };
 
@@ -2511,6 +2516,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
     async fn import_execution_pending_block(
         self: Arc<Self>,
         execution_pending_block: ExecutionPendingBlock<T>,
+        sidecar: Option<Arc<SignedBlobsSidecar<T::EthSpec>>>,
         count_unrealized: CountUnrealized,
     ) -> Result<Hash256, BlockError<T::EthSpec>> {
         let ExecutionPendingBlock {
@@ -2566,6 +2572,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
                 move || {
                     chain.import_block(
                         block,
+                        sidecar,
                         block_root,
                         state,
                         confirmed_state_roots,
@@ -2588,6 +2595,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
     fn import_block(
         &self,
         signed_block: Arc<SignedBeaconBlock<T::EthSpec>>,
+        sidecar: Option<Arc<SignedBlobsSidecar<T::EthSpec>>>,
         block_root: Hash256,
         mut state: BeaconState<T::EthSpec>,
         confirmed_state_roots: Vec<Hash256>,
@@ -2926,6 +2934,9 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
             .collect();
         ops.push(StoreOp::PutBlock(block_root, signed_block.clone()));
         ops.push(StoreOp::PutState(block.state_root(), &state));
+        if let Some(sidecar) = sidecar {
+            ops.push(StoreOp::PutBlobs(block_root, sidecar));
+        }
         let txn_lock = self.store.hot_db.begin_rw_transaction();
 
         if let Err(e) = self.store.do_atomically(ops) {
@@ -3364,7 +3375,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
         // allows it to run concurrently with things like attestation packing.
         let prepare_payload_handle = match &state {
             BeaconState::Base(_) | BeaconState::Altair(_) => None,
-            BeaconState::Merge(_) => {
+            BeaconState::Merge(_) | BeaconState::Eip4844(_) => {
                 let prepare_payload_handle =
                     get_execution_payload(self.clone(), &state, proposer_index, builder_params)?;
                 Some(prepare_payload_handle)
@@ -3620,31 +3631,28 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
                         .ok_or(BlockProductionError::MissingExecutionPayload)?,
                 },
             }),
-            BeaconState::Capella(_) => {
+            BeaconState::Eip4844(_) => BeaconBlock::Eip4844(BeaconBlockEip4844 {
-                let sync_aggregate = get_sync_aggregate()?;
-                let (execution_payload, _blobs) =
-                    get_execution_payload_and_blobs(self, &state, proposer_index)?;
-                //FIXME(sean) get blobs
-                BeaconBlock::Capella(BeaconBlockCapella {
                 slot,
                 proposer_index,
                 parent_root,
                 state_root: Hash256::zero(),
-                    body: BeaconBlockBodyCapella {
+                body: BeaconBlockBodyEip4844 {
                     randao_reveal,
                     eth1_data,
                     graffiti,
                     proposer_slashings: proposer_slashings.into(),
                     attester_slashings: attester_slashings.into(),
-                        attestations,
+                    attestations: attestations.into(),
-                        deposits,
+                    deposits: deposits.into(),
                     voluntary_exits: voluntary_exits.into(),
-                        sync_aggregate,
+                    sync_aggregate: sync_aggregate
-                        execution_payload,
+                        .ok_or(BlockProductionError::MissingSyncAggregate)?,
-                        blob_kzgs: VariableList::empty(),
+                    execution_payload: execution_payload
+                        .ok_or(BlockProductionError::MissingExecutionPayload)?,
+                    //FIXME(sean) get blobs
+                    blob_kzg_commitments: VariableList::empty(),
                 },
-                })
+            }),
-            }
         };
 
         let block = SignedBeaconBlock::from_block(

beacon_node/beacon_chain/src/block_verification.rs

@@ -144,6 +144,7 @@ pub enum BlockError<T: EthSpec> {
         present_slot: Slot,
         block_slot: Slot,
     },
+    MissingSidecar,
     /// The block state_root does not match the generated state.
     ///
     /// ## Peer scoring
@@ -277,6 +278,7 @@ pub enum BlockError<T: EthSpec> {
     /// The peer sent us an invalid block, but I'm not really sure how to score this in an
     /// "optimistic" sync world.
     ParentExecutionPayloadInvalid { parent_root: Hash256 },
+
 }
 
 /// Returned when block validation failed due to some issue verifying

beacon_node/beacon_chain/src/builder.rs

@@ -801,6 +801,8 @@ where
             validator_pubkey_cache: TimeoutRwLock::new(validator_pubkey_cache),
             attester_cache: <_>::default(),
             early_attester_cache: <_>::default(),
+            block_waiting_for_sidecar: <_>::default(),
+            sidecar_waiting_for_block: <_>::default(),
             shutdown_sender: self
                 .shutdown_sender
                 .ok_or("Cannot build without a shutdown sender.")?,

beacon_node/beacon_chain/src/execution_payload.rs

@@ -24,7 +24,7 @@ use state_processing::per_block_processing::{
 use std::sync::Arc;
 use tokio::task::JoinHandle;
 use tree_hash::TreeHash;
-use types::*;
+use types::{*, execution_payload::BlobsBundle};
 
 pub type PreparePayloadResult<Payload> = Result<Payload, BlockProductionError>;
 pub type PreparePayloadHandle<Payload> = JoinHandle<Option<PreparePayloadResult<Payload>>>;
@@ -399,7 +399,7 @@ pub fn prepare_execution_payload_and_blobs_blocking<
     Option<(
         Payload,
         VariableList<
-            KZGCommitment,
+            KzgCommitment,
             <<T as BeaconChainTypes>::EthSpec as EthSpec>::MaxBlobsPerBlock,
         >,
     )>,
@@ -513,6 +513,14 @@ where
         .await
         .map_err(BlockProductionError::GetPayloadFailed)?;
 
+    /* 
+    TODO: fetch blob bundles from el engine for block building
+    let suggested_fee_recipient = execution_layer.get_suggested_fee_recipient(proposer_index).await;
+    let blobs = execution_layer.get_blob_bundles(parent_hash, timestamp, random, suggested_fee_recipient)
+    .await
+    .map_err(BlockProductionError::GetPayloadFailed)?;
+    */
+
     Ok(execution_payload)
 }
 
@@ -527,7 +535,7 @@ pub async fn prepare_execution_payload_and_blobs<
     Option<(
         Payload,
         VariableList<
-            KZGCommitment,
+            KzgCommitment,
             <<T as BeaconChainTypes>::EthSpec as EthSpec>::MaxBlobsPerBlock,
         >,
     )>,

beacon_node/beacon_chain/src/snapshot_cache.rs

@@ -16,7 +16,7 @@ pub const DEFAULT_SNAPSHOT_CACHE_SIZE: usize = 4;
 const MINIMUM_BLOCK_DELAY_FOR_CLONE: Duration = Duration::from_secs(6);
 
 /// This snapshot is to be used for verifying a child of `self.beacon_block`.
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct PreProcessingSnapshot<T: EthSpec> {
     /// This state is equivalent to the `self.beacon_block.state_root()` state that has been
     /// advanced forward one slot using `per_slot_processing`. This state is "primed and ready" for

beacon_node/execution_layer/src/engine_api.rs

@@ -7,9 +7,10 @@ use serde::{Deserialize, Serialize};
 use strum::IntoStaticStr;
 pub use types::{
     Address, EthSpec, ExecutionBlockHash, ExecutionPayload, ExecutionPayloadHeader, FixedVector,
-    Hash256, Uint256, VariableList,
+    Hash256, Uint256, VariableList, kzg_proof::KzgProof, kzg_commitment::KzgCommitment, blob::Blob,
 };
-use types::{KZGCommitment};
+use types::{KzgCommitment};
+
 
 pub mod auth;
 pub mod http;
@@ -170,6 +171,6 @@ pub struct ProposeBlindedBlockResponse {
 
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
 pub struct BlobDetailsV1 {
-    kzg: KZGCommitment,
+    kzg: KzgCommitment,
     blob: Vec<Hash256>,
 }

beacon_node/execution_layer/src/engine_api/http.rs

@@ -3,13 +3,14 @@
 use super::*;
 use crate::auth::Auth;
 use crate::json_structures::*;
+use eth2::lighthouse::Eth1Block;
 use reqwest::header::CONTENT_TYPE;
 use sensitive_url::SensitiveUrl;
 use serde::de::DeserializeOwned;
 use serde_json::json;
 
 use std::time::Duration;
-use types::EthSpec;
+use types::{EthSpec, FullPayload, execution_payload::BlobsBundle};
 
 pub use deposit_log::{DepositLog, Log};
 pub use reqwest::Client;
@@ -34,8 +35,8 @@ pub const ENGINE_NEW_PAYLOAD_TIMEOUT: Duration = Duration::from_secs(8);
 pub const ENGINE_GET_PAYLOAD_V1: &str = "engine_getPayloadV1";
 pub const ENGINE_GET_PAYLOAD_TIMEOUT: Duration = Duration::from_secs(2);
 
-pub const ENGINE_GET_BLOB_V1: &str = "engine_getBlobV1";
+pub const ENGINE_GET_BLOBS_BUNDLE_V1: &str = "engine_getBlobsBundleV1";
-pub const ENGINE_GET_BLOB_TIMEOUT: Duration = Duration::from_secs(2);
+pub const ENGINE_GET_BLOBS_BUNDLE_TIMEOUT: Duration = Duration::from_secs(2);
 
 pub const ENGINE_FORKCHOICE_UPDATED_V1: &str = "engine_forkchoiceUpdatedV1";
 pub const ENGINE_FORKCHOICE_UPDATED_TIMEOUT: Duration = Duration::from_secs(8);
@@ -667,15 +668,14 @@ impl HttpJsonRpc {
         Ok(response.into())
     }
 
-    pub async fn get_blob_v1<T: EthSpec>(
+    pub async fn get_blobs_bundle_v1<T: EthSpec>(
         &self,
         payload_id: PayloadId,
-        versioned_hash: ExecutionBlockHash,
+    ) -> Result<BlobsBundle<T>, Error> {
-    ) -> Result<BlobDetailsV1, Error> {
+        let params = json!([JsonPayloadIdRequest::from(payload_id)]);
-        let params = json!([JsonPayloadIdRequest::from(payload_id), versioned_hash]);
 
-        let response: BlobDetailsV1 = self
+        let response: JsonBlobBundlesV1<T> = self
-            .rpc_request(ENGINE_GET_BLOB_V1, params, ENGINE_GET_BLOB_TIMEOUT)
+            .rpc_request(ENGINE_GET_BLOBS_BUNDLE_V1, params, ENGINE_GET_BLOBS_BUNDLE_TIMEOUT)
             .await?;
 
         Ok(response.into())

beacon_node/execution_layer/src/engine_api/json_structures.rs

@@ -1,6 +1,6 @@
 use super::*;
 use serde::{Deserialize, Serialize};
-use types::{EthSpec, ExecutionBlockHash, FixedVector, Transaction, Unsigned, VariableList};
+use types::{EthSpec, ExecutionBlockHash, FixedVector, Transaction, Unsigned, VariableList, execution_payload::BlobsBundle};
 
 #[derive(Debug, PartialEq, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
@@ -269,6 +269,54 @@ impl From<JsonPayloadAttributesV1> for PayloadAttributes {
     }
 }
 
+#[derive(Debug, PartialEq, Serialize, Deserialize)]
+#[serde(bound = "T: EthSpec", rename_all = "camelCase")]
+pub struct JsonBlobBundlesV1<T: EthSpec> {
+    pub block_hash: Hash256,
+    pub kzgs: Vec<KzgCommitment>,
+    pub blobs: Vec<Blob<T>>,
+    pub aggregated_proof: KzgProof,
+}
+
+impl <T: EthSpec> From<BlobsBundle<T>> for JsonBlobBundlesV1<T> {
+    fn from(p: BlobsBundle<T>) -> Self {
+        // Use this verbose deconstruction pattern to ensure no field is left unused.
+        let BlobsBundle {
+            block_hash,
+            aggregated_proof,
+            blobs,
+            kzgs,
+        } = p;
+
+        Self {
+            block_hash,
+            aggregated_proof,
+            blobs,
+            kzgs,
+        }
+    }
+}
+
+impl <T: EthSpec> From<JsonBlobBundlesV1<T>> for BlobsBundle<T> {
+    fn from(j: JsonBlobBundlesV1<T>) -> Self {
+        // Use this verbose deconstruction pattern to ensure no field is left unused.
+        let JsonBlobBundlesV1 {
+            block_hash,
+            aggregated_proof,
+            blobs,
+            kzgs,
+        } = j;
+
+        Self {
+            block_hash,
+            aggregated_proof,
+            blobs,
+            kzgs,
+        }
+    }
+}
+
+
 #[derive(Debug, PartialEq, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct JsonForkChoiceStateV1 {

beacon_node/execution_layer/src/lib.rs

@@ -781,6 +781,55 @@ impl<T: EthSpec> ExecutionLayer<T> {
         .await
     }
 
+    pub async fn get_blob_bundles(
+        &self,
+        parent_hash: ExecutionBlockHash,
+        timestamp: u64,
+        prev_randao: Hash256,
+        suggested_fee_recipient: Address,
+    ) -> Result<BlobsBundle<T>, Error> {
+        debug!(
+            self.log(),
+            "Issuing engine_getPayload";
+            "suggested_fee_recipient" => ?suggested_fee_recipient,
+            "prev_randao" => ?prev_randao,
+            "timestamp" => timestamp,
+            "parent_hash" => ?parent_hash,
+        );
+        self.engine()
+            .request(|engine| async move {
+                let payload_id = if let Some(id) = engine
+                    .get_payload_id(parent_hash, timestamp, prev_randao, suggested_fee_recipient)
+                    .await
+                {
+                    // The payload id has been cached for this engine.
+                    metrics::inc_counter_vec(
+                        &metrics::EXECUTION_LAYER_PRE_PREPARED_PAYLOAD_ID,
+                        &[metrics::HIT],
+                    );
+                    id
+                } else {             
+                    error!(
+                        self.log(),
+                        "Exec engine unable to produce blobs, did you call get_payload before?",
+                    );
+                    return Err(ApiError::PayloadIdUnavailable);                       
+                };
+
+                engine
+                    .api
+                    .get_blobs_bundle_v1::<T>(payload_id)
+                    .await
+                    .map(|bundle| {
+                        // TODO verify the blob bundle here?
+                        bundle.into()
+                    })
+            })
+            .await
+            .map_err(Box::new)
+            .map_err(Error::EngineError)
+    }
+
     async fn get_full_payload_with<Payload: ExecPayload<T>>(
         &self,
         parent_hash: ExecutionBlockHash,

beacon_node/lighthouse_network/src/config.rs

@@ -300,7 +300,7 @@ pub fn gossipsub_config(network_load: u8, fork_context: Arc<ForkContext>) -> Gos
             // according to: https://github.com/ethereum/consensus-specs/blob/dev/specs/merge/p2p-interface.md#the-gossip-domain-gossipsub
             // the derivation of the message-id remains the same in the merge
             //TODO(sean): figure this out
-            ForkName::Altair | ForkName::Merge | ForkName::Capella => {
+            ForkName::Altair | ForkName::Merge | ForkName::Eip4844 => {
                 let topic_len_bytes = topic_bytes.len().to_le_bytes();
                 let mut vec = Vec::with_capacity(
                     prefix.len() + topic_len_bytes.len() + topic_bytes.len() + message.data.len(),

beacon_node/lighthouse_network/src/peer_manager/mod.rs

@@ -501,7 +501,7 @@ impl<TSpec: EthSpec> PeerManager<TSpec> {
                     Protocol::Ping => PeerAction::MidToleranceError,
                     Protocol::BlocksByRange => PeerAction::MidToleranceError,
                     Protocol::BlocksByRoot => PeerAction::MidToleranceError,
-                    Protocol::TxBlobsByRange => PeerAction::MidToleranceError,
+                    Protocol::BlobsByRange => PeerAction::MidToleranceError,
                     Protocol::Goodbye => PeerAction::LowToleranceError,
                     Protocol::MetaData => PeerAction::LowToleranceError,
                     Protocol::Status => PeerAction::LowToleranceError,
@@ -518,6 +518,7 @@ impl<TSpec: EthSpec> PeerManager<TSpec> {
                     Protocol::BlocksByRange => return,
                     Protocol::TxBlobsByRange => return,
                     Protocol::BlocksByRoot => return,
+                    Protocol::BlobsByRange => return,
                     Protocol::Goodbye => return,
                     Protocol::MetaData => PeerAction::LowToleranceError,
                     Protocol::Status => PeerAction::LowToleranceError,
@@ -534,6 +535,7 @@ impl<TSpec: EthSpec> PeerManager<TSpec> {
                     Protocol::BlocksByRange => PeerAction::MidToleranceError,
                     Protocol::TxBlobsByRange => PeerAction::MidToleranceError,
                     Protocol::BlocksByRoot => PeerAction::MidToleranceError,
+                    Protocol::BlobsByRange => PeerAction::MidToleranceError,
                     Protocol::Goodbye => return,
                     Protocol::MetaData => return,
                     Protocol::Status => return,

beacon_node/lighthouse_network/src/rpc/codec/base.rs

@@ -193,17 +193,17 @@ mod tests {
         let mut chain_spec = Spec::default_spec();
         let altair_fork_epoch = Epoch::new(1);
         let merge_fork_epoch = Epoch::new(2);
-        let capella_fork_epoch = Epoch::new(3);
+        let eip4844_fork_epoch = Epoch::new(3);
 
         chain_spec.altair_fork_epoch = Some(altair_fork_epoch);
         chain_spec.bellatrix_fork_epoch = Some(merge_fork_epoch);
-        chain_spec.capella_fork_epoch = Some(capella_fork_epoch);
+        chain_spec.eip4844_fork_epoch = Some(eip4844_fork_epoch);
 
         let current_slot = match fork_name {
             ForkName::Base => Slot::new(0),
             ForkName::Altair => altair_fork_epoch.start_slot(Spec::slots_per_epoch()),
             ForkName::Merge => merge_fork_epoch.start_slot(Spec::slots_per_epoch()),
-            ForkName::Capella => capella_fork_epoch.start_slot(Spec::slots_per_epoch()),
+            ForkName::Eip4844 => eip4844_fork_epoch.start_slot(Spec::slots_per_epoch()),
         };
         ForkContext::new::<Spec>(current_slot, Hash256::zero(), &chain_spec)
     }

beacon_node/lighthouse_network/src/rpc/codec/ssz_snappy.rs

@@ -16,8 +16,8 @@ use std::marker::PhantomData;
 use std::sync::Arc;
 use tokio_util::codec::{Decoder, Encoder};
 use types::{
-    BlobsSidecar, EthSpec, ForkContext, ForkName, SignedBeaconBlock, SignedBeaconBlockAltair,
+    EthSpec, ForkContext, ForkName, SignedBeaconBlock, SignedBeaconBlockAltair,
-    SignedBeaconBlockBase, SignedBeaconBlockCapella, SignedBeaconBlockMerge,
+    SignedBeaconBlockBase, SignedBeaconBlockMerge, SignedBeaconBlockEip4844
 };
 use unsigned_varint::codec::Uvi;
 
@@ -69,8 +69,8 @@ impl<TSpec: EthSpec> Encoder<RPCCodedResponse<TSpec>> for SSZSnappyInboundCodec<
             RPCCodedResponse::Success(resp) => match &resp {
                 RPCResponse::Status(res) => res.as_ssz_bytes(),
                 RPCResponse::BlocksByRange(res) => res.as_ssz_bytes(),
-                RPCResponse::TxBlobsByRange(res) => res.as_ssz_bytes(),
                 RPCResponse::BlocksByRoot(res) => res.as_ssz_bytes(),
+                RPCResponse::BlobsByRange(res) => res.as_ssz_bytes(),
                 RPCResponse::Pong(res) => res.data.as_ssz_bytes(),
                 RPCResponse::MetaData(res) =>
                 // Encode the correct version of the MetaData response based on the negotiated version.
@@ -228,8 +228,8 @@ impl<TSpec: EthSpec> Encoder<OutboundRequest<TSpec>> for SSZSnappyOutboundCodec<
             OutboundRequest::Status(req) => req.as_ssz_bytes(),
             OutboundRequest::Goodbye(req) => req.as_ssz_bytes(),
             OutboundRequest::BlocksByRange(req) => req.as_ssz_bytes(),
-            OutboundRequest::TxBlobsByRange(req) => req.as_ssz_bytes(),
             OutboundRequest::BlocksByRoot(req) => req.block_roots.as_ssz_bytes(),
+            OutboundRequest::BlobsByRange(req) => req.as_ssz_bytes(),
             OutboundRequest::Ping(req) => req.as_ssz_bytes(),
             OutboundRequest::MetaData(_) => return Ok(()), // no metadata to encode
         };
@@ -409,8 +409,9 @@ fn context_bytes<T: EthSpec>(
                 return match **ref_box_block {
                     // NOTE: If you are adding another fork type here, be sure to modify the
                     //       `fork_context.to_context_bytes()` function to support it as well!
-                    SignedBeaconBlock::Capella { .. } => {
+                    SignedBeaconBlock::Eip4844 { .. } => {
-                        fork_context.to_context_bytes(ForkName::Capella)
+                        // Merge context being `None` implies that "merge never happened".
+                        fork_context.to_context_bytes(ForkName::Eip4844)
                     }
                     SignedBeaconBlock::Merge { .. } => {
                         // Merge context being `None` implies that "merge never happened".
@@ -471,12 +472,12 @@ fn handle_v1_request<T: EthSpec>(
         Protocol::BlocksByRange => Ok(Some(InboundRequest::BlocksByRange(
             OldBlocksByRangeRequest::from_ssz_bytes(decoded_buffer)?,
         ))),
-        Protocol::TxBlobsByRange => Ok(Some(InboundRequest::TxBlobsByRange(
-            TxBlobsByRangeRequest::from_ssz_bytes(decoded_buffer)?,
-        ))),
         Protocol::BlocksByRoot => Ok(Some(InboundRequest::BlocksByRoot(BlocksByRootRequest {
             block_roots: VariableList::from_ssz_bytes(decoded_buffer)?,
         }))),
+        Protocol::BlobsByRange => Ok(Some(InboundRequest::BlobsByRange(
+            BlobsByRangeRequest::from_ssz_bytes(decoded_buffer)?,
+        ))),
         Protocol::Ping => Ok(Some(InboundRequest::Ping(Ping {
             data: u64::from_ssz_bytes(decoded_buffer)?,
         }))),
@@ -506,12 +507,12 @@ fn handle_v2_request<T: EthSpec>(
         Protocol::BlocksByRange => Ok(Some(InboundRequest::BlocksByRange(
             OldBlocksByRangeRequest::from_ssz_bytes(decoded_buffer)?,
         ))),
-        Protocol::TxBlobsByRange => Ok(Some(InboundRequest::TxBlobsByRange(
-            TxBlobsByRangeRequest::from_ssz_bytes(decoded_buffer)?,
-        ))),
         Protocol::BlocksByRoot => Ok(Some(InboundRequest::BlocksByRoot(BlocksByRootRequest {
             block_roots: VariableList::from_ssz_bytes(decoded_buffer)?,
         }))),
+        Protocol::BlobsByRange => Ok(Some(InboundRequest::BlobsByRange(
+            BlobsByRangeRequest::from_ssz_bytes(decoded_buffer)?,
+        ))),
         // MetaData requests return early from InboundUpgrade and do not reach the decoder.
         // Handle this case just for completeness.
         Protocol::MetaData => {
@@ -546,12 +547,12 @@ fn handle_v1_response<T: EthSpec>(
         Protocol::BlocksByRange => Ok(Some(RPCResponse::BlocksByRange(Arc::new(
             SignedBeaconBlock::Base(SignedBeaconBlockBase::from_ssz_bytes(decoded_buffer)?),
         )))),
-        Protocol::TxBlobsByRange => Ok(Some(RPCResponse::TxBlobsByRange(Arc::new(
-            BlobsSidecar::from_ssz_bytes(decoded_buffer)?),
-        ))),
         Protocol::BlocksByRoot => Ok(Some(RPCResponse::BlocksByRoot(Arc::new(
             SignedBeaconBlock::Base(SignedBeaconBlockBase::from_ssz_bytes(decoded_buffer)?),
         )))),
+        Protocol::BlobsByRange => Err(RPCError::InvalidData(
+            "blobs by range via v1".to_string(),
+        )),
         Protocol::Ping => Ok(Some(RPCResponse::Pong(Ping {
             data: u64::from_ssz_bytes(decoded_buffer)?,
         }))),
@@ -600,15 +601,12 @@ fn handle_v2_response<T: EthSpec>(
                         decoded_buffer,
                     )?),
                 )))),
-                ForkName::Capella => Ok(Some(RPCResponse::BlocksByRange(Box::new(
+                ForkName::Eip4844 => Ok(Some(RPCResponse::BlocksByRange(Arc::new(
-                    SignedBeaconBlock::Capella(SignedBeaconBlockCapella::from_ssz_bytes(
+                    SignedBeaconBlock::Eip4844(SignedBeaconBlockEip4844::from_ssz_bytes(
                         decoded_buffer,
                     )?),
                 )))),
             },
-            Protocol::TxBlobsByRange => Ok(Some(RPCResponse::TxBlobsByRange(Box::new(
-                BlobsSidecar::from_ssz_bytes(decoded_buffer)?,
-            )))),
             Protocol::BlocksByRoot => match fork_name {
                 ForkName::Altair => Ok(Some(RPCResponse::BlocksByRoot(Arc::new(
                     SignedBeaconBlock::Altair(SignedBeaconBlockAltair::from_ssz_bytes(
@@ -623,12 +621,21 @@ fn handle_v2_response<T: EthSpec>(
                         decoded_buffer,
                     )?),
                 )))),
-                ForkName::Capella => Ok(Some(RPCResponse::BlocksByRoot(Box::new(
+                ForkName::Eip4844 => Ok(Some(RPCResponse::BlocksByRange(Arc::new(
-                    SignedBeaconBlock::Capella(SignedBeaconBlockCapella::from_ssz_bytes(
+                    SignedBeaconBlock::Eip4844(SignedBeaconBlockEip4844::from_ssz_bytes(
                         decoded_buffer,
                     )?),
                 )))),
             },
+            Protocol::BlobsByRange => match  fork_name {
+                ForkName::Eip4844 => Ok(Some(RPCResponse::BlobsByRange(Arc::new(
+                    VariableList::from_ssz_bytes(decoded_buffer)?,
+                )))),
+                _ => Err(RPCError::ErrorResponse(
+                    RPCResponseErrorCode::InvalidRequest,
+                    "Invalid forkname for blobsbyrange".to_string(),
+                )),
+            }
             _ => Err(RPCError::ErrorResponse(
                 RPCResponseErrorCode::InvalidRequest,
                 "Invalid v2 request".to_string(),
@@ -677,17 +684,17 @@ mod tests {
         let mut chain_spec = Spec::default_spec();
         let altair_fork_epoch = Epoch::new(1);
         let merge_fork_epoch = Epoch::new(2);
-        let capella_fork_epoch = Epoch::new(3);
+        let eip4844_fork_epoch = Epoch::new(3);
 
         chain_spec.altair_fork_epoch = Some(altair_fork_epoch);
         chain_spec.bellatrix_fork_epoch = Some(merge_fork_epoch);
-        chain_spec.capella_fork_epoch = Some(capella_fork_epoch);
+        chain_spec.eip4844_fork_epoch = Some(eip4844_fork_epoch);
 
         let current_slot = match fork_name {
             ForkName::Base => Slot::new(0),
             ForkName::Altair => altair_fork_epoch.start_slot(Spec::slots_per_epoch()),
             ForkName::Merge => merge_fork_epoch.start_slot(Spec::slots_per_epoch()),
-            ForkName::Capella => capella_fork_epoch.start_slot(Spec::slots_per_epoch()),
+            ForkName::Eip4844 => eip4844_fork_epoch.start_slot(Spec::slots_per_epoch()),
         };
         ForkContext::new::<Spec>(current_slot, Hash256::zero(), &chain_spec)
     }
@@ -891,6 +898,9 @@ mod tests {
                 OutboundRequest::BlocksByRoot(bbroot) => {
                     assert_eq!(decoded, InboundRequest::BlocksByRoot(bbroot))
                 }
+                OutboundRequest::BlobsByRange(blbrange) => {
+                    assert_eq!(decoded, InboundRequest::BlobsByRange(blbrange))
+                }
                 OutboundRequest::Ping(ping) => {
                     assert_eq!(decoded, InboundRequest::Ping(ping))
                 }

beacon_node/lighthouse_network/src/rpc/methods.rs

@@ -12,7 +12,8 @@ use std::ops::Deref;
 use std::sync::Arc;
 use strum::IntoStaticStr;
 use superstruct::superstruct;
-use types::{BlobsSidecar, Epoch, EthSpec, Hash256, SignedBeaconBlock, Slot};
+use types::{Epoch, EthSpec, Hash256, SignedBeaconBlock, Slot};
+use types::blobs_sidecar::BlobsSidecar;
 
 /// Maximum number of blocks in a single request.
 pub type MaxRequestBlocks = U1024;
@@ -204,6 +205,16 @@ pub struct BlocksByRangeRequest {
     pub count: u64,
 }
 
+/// Request a number of beacon blobs from a peer.
+#[derive(Encode, Decode, Clone, Debug, PartialEq)]
+pub struct BlobsByRangeRequest {
+    /// The starting slot to request blobs.
+    pub start_slot: u64,
+
+    /// The number of blobs from the start slot.
+    pub count: u64,
+}
+
 /// Request a number of beacon block roots from a peer.
 #[derive(Encode, Decode, Clone, Debug, PartialEq)]
 pub struct OldBlocksByRangeRequest {
@@ -251,6 +262,9 @@ pub enum RPCResponse<T: EthSpec> {
     /// A response to a get BLOCKS_BY_ROOT request.
     BlocksByRoot(Arc<SignedBeaconBlock<T>>),
 
+    /// A response to a get BLOBS_BY_RANGE request
+    BlobsByRange(Arc<VariableList<BlobsSidecar<T>, T::MaxRequestBlobsSidecars>>),
+
     /// A PONG response to a PING request.
     Pong(Ping),
 
@@ -268,6 +282,9 @@ pub enum ResponseTermination {
 
     /// Blocks by root stream termination.
     BlocksByRoot,
+
+    // Blobs by range stream termination.
+    BlobsByRange
 }
 
 /// The structured response containing a result/code indicating success or failure
@@ -330,6 +347,7 @@ impl<T: EthSpec> RPCCodedResponse<T> {
                 RPCResponse::BlocksByRange(_) => true,
                 RPCResponse::TxBlobsByRange(_) => true,
                 RPCResponse::BlocksByRoot(_) => true,
+                RPCResponse::BlobsByRange(_) => true,
                 RPCResponse::Pong(_) => false,
                 RPCResponse::MetaData(_) => false,
             },
@@ -364,6 +382,7 @@ impl<T: EthSpec> RPCResponse<T> {
             RPCResponse::Status(_) => Protocol::Status,
             RPCResponse::BlocksByRange(_) => Protocol::BlocksByRange,
             RPCResponse::BlocksByRoot(_) => Protocol::BlocksByRoot,
+            RPCResponse::BlobsByRange(_) => Protocol::BlobsByRange,
             RPCResponse::Pong(_) => Protocol::Ping,
             RPCResponse::MetaData(_) => Protocol::MetaData,
         }
@@ -402,6 +421,9 @@ impl<T: EthSpec> std::fmt::Display for RPCResponse<T> {
             RPCResponse::BlocksByRoot(block) => {
                 write!(f, "BlocksByRoot: Block slot: {}", block.slot())
             }
+            RPCResponse::BlobsByRange(blob) => {
+                write!(f, "BlobsByRange: Blob slot: {}", blob.len())
+            }
             RPCResponse::Pong(ping) => write!(f, "Pong: {}", ping.data),
             RPCResponse::MetaData(metadata) => write!(f, "Metadata: {}", metadata.seq_number()),
         }

beacon_node/lighthouse_network/src/rpc/mod.rs

@@ -132,6 +132,7 @@ impl<Id: ReqId, TSpec: EthSpec> RPC<Id, TSpec> {
                 Duration::from_secs(10),
             )
             .n_every(Protocol::BlocksByRoot, 128, Duration::from_secs(10))
+            .n_every(Protocol::BlobsByRange, 128, Duration::from_secs(10))
             .build()
             .expect("Configuration parameters are valid");
         RPC {
@@ -299,6 +300,7 @@ where
                     match end {
                         ResponseTermination::BlocksByRange => Protocol::BlocksByRange,
                         ResponseTermination::BlocksByRoot => Protocol::BlocksByRoot,
+                        ResponseTermination::BlobsByRange => Protocol::BlobsByRange,
                     },
                 ),
             },

beacon_node/lighthouse_network/src/rpc/outbound.rs

@@ -39,6 +39,7 @@ pub enum OutboundRequest<TSpec: EthSpec> {
     BlocksByRange(OldBlocksByRangeRequest),
     TxBlobsByRange(TxBlobsByRangeRequest),
     BlocksByRoot(BlocksByRootRequest),
+    BlobsByRange(BlobsByRangeRequest),
     Ping(Ping),
     MetaData(PhantomData<TSpec>),
 }
@@ -82,6 +83,9 @@ impl<TSpec: EthSpec> OutboundRequest<TSpec> {
                 ProtocolId::new(Protocol::BlocksByRoot, Version::V2, Encoding::SSZSnappy),
                 ProtocolId::new(Protocol::BlocksByRoot, Version::V1, Encoding::SSZSnappy),
             ],
+            OutboundRequest::BlobsByRange(_) => vec![
+                ProtocolId::new(Protocol::BlocksByRoot, Version::V1, Encoding::SSZSnappy),
+            ],
             OutboundRequest::Ping(_) => vec![ProtocolId::new(
                 Protocol::Ping,
                 Version::V1,
@@ -104,6 +108,7 @@ impl<TSpec: EthSpec> OutboundRequest<TSpec> {
             OutboundRequest::BlocksByRange(req) => req.count,
             OutboundRequest::TxBlobsByRange(req) => req.count,
             OutboundRequest::BlocksByRoot(req) => req.block_roots.len() as u64,
+            OutboundRequest::BlobsByRange(req) => req.count,
             OutboundRequest::Ping(_) => 1,
             OutboundRequest::MetaData(_) => 1,
         }
@@ -117,6 +122,7 @@ impl<TSpec: EthSpec> OutboundRequest<TSpec> {
             OutboundRequest::BlocksByRange(_) => Protocol::BlocksByRange,
             OutboundRequest::TxBlobsByRange(_) => Protocol::TxBlobsByRange,
             OutboundRequest::BlocksByRoot(_) => Protocol::BlocksByRoot,
+            OutboundRequest::BlobsByRange(_) => Protocol::BlobsByRange,
             OutboundRequest::Ping(_) => Protocol::Ping,
             OutboundRequest::MetaData(_) => Protocol::MetaData,
         }
@@ -131,6 +137,7 @@ impl<TSpec: EthSpec> OutboundRequest<TSpec> {
             OutboundRequest::BlocksByRange(_) => ResponseTermination::BlocksByRange,
             OutboundRequest::TxBlobsByRange(_) => ResponseTermination::TxBlobsByRange,
             OutboundRequest::BlocksByRoot(_) => ResponseTermination::BlocksByRoot,
+            OutboundRequest::BlobsByRange(_) => ResponseTermination::BlobsByRange,
             OutboundRequest::Status(_) => unreachable!(),
             OutboundRequest::Goodbye(_) => unreachable!(),
             OutboundRequest::Ping(_) => unreachable!(),
@@ -187,6 +194,7 @@ impl<TSpec: EthSpec> std::fmt::Display for OutboundRequest<TSpec> {
             OutboundRequest::BlocksByRange(req) => write!(f, "Blocks by range: {}", req),
             OutboundRequest::TxBlobsByRange(req) => write!(f, "Blobs by range: {}", req),
             OutboundRequest::BlocksByRoot(req) => write!(f, "Blocks by root: {:?}", req),
+            OutboundRequest::BlobsByRange(req) => write!(f, "Blobs by range: {:?}", req),
             OutboundRequest::Ping(ping) => write!(f, "Ping: {}", ping.data),
             OutboundRequest::MetaData(_) => write!(f, "MetaData request"),
         }

beacon_node/lighthouse_network/src/rpc/protocol.rs

@@ -108,6 +108,8 @@ lazy_static! {
 pub(crate) const MAX_RPC_SIZE: usize = 1_048_576; // 1M
 /// The maximum bytes that can be sent across the RPC post-merge.
 pub(crate) const MAX_RPC_SIZE_POST_MERGE: usize = 10 * 1_048_576; // 10M
+//TODO(sean) check
+pub(crate) const MAX_RPC_SIZE_POST_EIP4844: usize = 20 * 1_048_576; // 10M
 /// The protocol prefix the RPC protocol id.
 const PROTOCOL_PREFIX: &str = "/eth2/beacon_chain/req";
 /// Time allowed for the first byte of a request to arrive before we time out (Time To First Byte).
@@ -119,9 +121,9 @@ const REQUEST_TIMEOUT: u64 = 15;
 /// Returns the maximum bytes that can be sent across the RPC.
 pub fn max_rpc_size(fork_context: &ForkContext) -> usize {
     match fork_context.current_fork() {
+        ForkName::Eip4844 => MAX_RPC_SIZE_POST_EIP4844,
         ForkName::Merge => MAX_RPC_SIZE_POST_MERGE,
-        //FIXME(sean) check this
+        ForkName::Altair | ForkName::Base => MAX_RPC_SIZE,
-        ForkName::Altair | ForkName::Base | ForkName::Capella => MAX_RPC_SIZE,
     }
 }
 
@@ -142,6 +144,10 @@ pub fn rpc_block_limits_by_fork(current_fork: ForkName) -> RpcLimits {
             *SIGNED_BEACON_BLOCK_BASE_MIN, // Base block is smaller than altair and merge blocks
             *SIGNED_BEACON_BLOCK_MERGE_MAX, // Merge block is larger than base and altair blocks
         ),
+        ForkName::Eip4844 => RpcLimits::new(
+            *SIGNED_BEACON_BLOCK_BASE_MIN, // Base block is smaller than altair and merge blocks
+            *SIGNED_BEACON_BLOCK_EIP4844_MAX, // Merge block is larger than base and altair blocks
+        ),
     }
 }
 
@@ -157,6 +163,8 @@ pub enum Protocol {
     TxBlobsByRange,
     /// The `BlocksByRoot` protocol name.
     BlocksByRoot,
+    /// The `BlobsByRange` protocol name.
+    BlobsByRange,
     /// The `Ping` protocol name.
     Ping,
     /// The `MetaData` protocol name.
@@ -184,9 +192,8 @@ impl std::fmt::Display for Protocol {
             Protocol::Status => "status",
             Protocol::Goodbye => "goodbye",
             Protocol::BlocksByRange => "beacon_blocks_by_range",
-            //FIXME(sean) verify
-            Protocol::TxBlobsByRange => "tx_blobs_by_range",
             Protocol::BlocksByRoot => "beacon_blocks_by_root",
+            Protocol::BlobsByRange => "blobs_sidecars_by_range",
             Protocol::Ping => "ping",
             Protocol::MetaData => "metadata",
         };
@@ -292,13 +299,12 @@ impl ProtocolId {
                 <OldBlocksByRangeRequest as Encode>::ssz_fixed_len(),
                 <OldBlocksByRangeRequest as Encode>::ssz_fixed_len(),
             ),
-            Protocol::TxBlobsByRange => RpcLimits::new(
-                <TxBlobsByRangeRequest as Encode>::ssz_fixed_len(),
-                <TxBlobsByRangeRequest as Encode>::ssz_fixed_len(),
-            ),
             Protocol::BlocksByRoot => {
                 RpcLimits::new(*BLOCKS_BY_ROOT_REQUEST_MIN, *BLOCKS_BY_ROOT_REQUEST_MAX)
             }
+            Protocol::BlobsByRange => {
+                RpcLimits::new(*BLOCKS_BY_ROOT_REQUEST_MIN, *BLOCKS_BY_ROOT_REQUEST_MAX)
+            }
             Protocol::Ping => RpcLimits::new(
                 <Ping as Encode>::ssz_fixed_len(),
                 <Ping as Encode>::ssz_fixed_len(),
@@ -317,6 +323,7 @@ impl ProtocolId {
             Protocol::Goodbye => RpcLimits::new(0, 0), // Goodbye request has no response
             Protocol::BlocksByRange => rpc_block_limits_by_fork(fork_context.current_fork()),
             Protocol::BlocksByRoot => rpc_block_limits_by_fork(fork_context.current_fork()),
+            Protocol::BlobsByRange => rpc_block_limits_by_fork(fork_context.current_fork()),
 
             Protocol::Ping => RpcLimits::new(
                 <Ping as Encode>::ssz_fixed_len(),
@@ -431,6 +438,7 @@ pub enum InboundRequest<TSpec: EthSpec> {
     Goodbye(GoodbyeReason),
     BlocksByRange(OldBlocksByRangeRequest),
     BlocksByRoot(BlocksByRootRequest),
+    BlobsByRange(BlobsByRangeRequest),
     Ping(Ping),
     MetaData(PhantomData<TSpec>),
 }
@@ -465,16 +473,14 @@ impl<TSpec: EthSpec> InboundRequest<TSpec> {
                 ProtocolId::new(Protocol::BlocksByRange, Version::V2, Encoding::SSZSnappy),
                 ProtocolId::new(Protocol::BlocksByRange, Version::V1, Encoding::SSZSnappy),
             ],
-            //FIXME(sean) do I need v1
-            InboundRequest::TxBlobsByRange(_) => vec![
-                // V2 has higher preference when negotiating a stream
-                ProtocolId::new(Protocol::TxBlobsByRange, Version::V2, Encoding::SSZSnappy),
-            ],
             InboundRequest::BlocksByRoot(_) => vec![
                 // V2 has higher preference when negotiating a stream
                 ProtocolId::new(Protocol::BlocksByRoot, Version::V2, Encoding::SSZSnappy),
                 ProtocolId::new(Protocol::BlocksByRoot, Version::V1, Encoding::SSZSnappy),
             ],
+            InboundRequest::BlobsByRange(_) => vec![
+                ProtocolId::new(Protocol::BlocksByRoot, Version::V1, Encoding::SSZSnappy),
+            ],
             InboundRequest::Ping(_) => vec![ProtocolId::new(
                 Protocol::Ping,
                 Version::V1,
@@ -497,6 +503,7 @@ impl<TSpec: EthSpec> InboundRequest<TSpec> {
             InboundRequest::BlocksByRange(req) => req.count,
             InboundRequest::TxBlobsByRange(req) => req.count,
             InboundRequest::BlocksByRoot(req) => req.block_roots.len() as u64,
+            InboundRequest::BlobsByRange(req) => req.count,
             InboundRequest::Ping(_) => 1,
             InboundRequest::MetaData(_) => 1,
         }
@@ -510,6 +517,7 @@ impl<TSpec: EthSpec> InboundRequest<TSpec> {
             InboundRequest::BlocksByRange(_) => Protocol::BlocksByRange,
             InboundRequest::TxBlobsByRange(_) => Protocol::TxBlobsByRange,
             InboundRequest::BlocksByRoot(_) => Protocol::BlocksByRoot,
+            InboundRequest::BlobsByRange(_) => Protocol::BlobsByRange,
             InboundRequest::Ping(_) => Protocol::Ping,
             InboundRequest::MetaData(_) => Protocol::MetaData,
         }
@@ -524,6 +532,7 @@ impl<TSpec: EthSpec> InboundRequest<TSpec> {
             InboundRequest::BlocksByRange(_) => ResponseTermination::BlocksByRange,
             InboundRequest::TxBlobsByRange(_) => ResponseTermination::TxBlobsByRange,
             InboundRequest::BlocksByRoot(_) => ResponseTermination::BlocksByRoot,
+            InboundRequest::BlobsByRange(_) => ResponseTermination::BlobsByRange,
             InboundRequest::Status(_) => unreachable!(),
             InboundRequest::Goodbye(_) => unreachable!(),
             InboundRequest::Ping(_) => unreachable!(),
@@ -628,8 +637,8 @@ impl<TSpec: EthSpec> std::fmt::Display for InboundRequest<TSpec> {
             InboundRequest::Status(status) => write!(f, "Status Message: {}", status),
             InboundRequest::Goodbye(reason) => write!(f, "Goodbye: {}", reason),
             InboundRequest::BlocksByRange(req) => write!(f, "Blocks by range: {}", req),
-            InboundRequest::TxBlobsByRange(req) => write!(f, "Blobs by range: {}", req),
             InboundRequest::BlocksByRoot(req) => write!(f, "Blocks by root: {:?}", req),
+            InboundRequest::BlobsByRange(req) => write!(f, "Blobs by range: {:?}", req),
             InboundRequest::Ping(ping) => write!(f, "Ping: {}", ping.data),
             InboundRequest::MetaData(_) => write!(f, "MetaData request"),
         }

beacon_node/lighthouse_network/src/rpc/rate_limiter.rs

@@ -71,9 +71,10 @@ pub struct RPCRateLimiter {
     status_rl: Limiter<PeerId>,
     /// BlocksByRange rate limiter.
     bbrange_rl: Limiter<PeerId>,
-    txbbrange_rl: Limiter<PeerId>,
     /// BlocksByRoot rate limiter.
     bbroots_rl: Limiter<PeerId>,
+    /// BlobsByRange rate limiter.
+    blbrange_rl: Limiter<PeerId>,
 }
 
 /// Error type for non conformant requests
@@ -97,9 +98,10 @@ pub struct RPCRateLimiterBuilder {
     status_quota: Option<Quota>,
     /// Quota for the BlocksByRange protocol.
     bbrange_quota: Option<Quota>,
-    txbbrange_quota: Option<Quota>,
     /// Quota for the BlocksByRoot protocol.
     bbroots_quota: Option<Quota>,
+    /// Quota for the BlocksByRange protocol.
+    blbrange_quota: Option<Quota>,
 }
 
 impl RPCRateLimiterBuilder {
@@ -117,8 +119,8 @@ impl RPCRateLimiterBuilder {
             Protocol::MetaData => self.metadata_quota = q,
             Protocol::Goodbye => self.goodbye_quota = q,
             Protocol::BlocksByRange => self.bbrange_quota = q,
-            Protocol::TxBlobsByRange => self.txbbrange_quota = q,
             Protocol::BlocksByRoot => self.bbroots_quota = q,
+            Protocol::BlobsByRange => self.blbrange_quota = q,
         }
         self
     }
@@ -158,9 +160,8 @@ impl RPCRateLimiterBuilder {
         let bbrange_quota = self
             .bbrange_quota
             .ok_or("BlocksByRange quota not specified")?;
-        let txbbrange_quota = self
+
-            .txbbrange_quota
+        let blbrange_quota = self.blbrange_quota.ok_or("BlobsByRange quota not specified")?;
-            .ok_or("TxBlobsByRange quota not specified")?;
 
         // create the rate limiters
         let ping_rl = Limiter::from_quota(ping_quota)?;
@@ -169,7 +170,7 @@ impl RPCRateLimiterBuilder {
         let goodbye_rl = Limiter::from_quota(goodbye_quota)?;
         let bbroots_rl = Limiter::from_quota(bbroots_quota)?;
         let bbrange_rl = Limiter::from_quota(bbrange_quota)?;
-        let txbbrange_rl = Limiter::from_quota(txbbrange_quota)?;
+        let blbrange_rl = Limiter::from_quota(blbrange_quota)?;
 
         // check for peers to prune every 30 seconds, starting in 30 seconds
         let prune_every = tokio::time::Duration::from_secs(30);
@@ -183,7 +184,7 @@ impl RPCRateLimiterBuilder {
             goodbye_rl,
             bbroots_rl,
             bbrange_rl,
-            txbbrange_rl,
+            blbrange_rl,
             init_time: Instant::now(),
         })
     }
@@ -206,8 +207,8 @@ impl RPCRateLimiter {
             Protocol::MetaData => &mut self.metadata_rl,
             Protocol::Goodbye => &mut self.goodbye_rl,
             Protocol::BlocksByRange => &mut self.bbrange_rl,
-            Protocol::TxBlobsByRange => &mut self.txbbrange_rl,
             Protocol::BlocksByRoot => &mut self.bbroots_rl,
+            Protocol::BlobsByRange => &mut self.blbrange_rl,
         };
         check(limiter)
     }
@@ -220,6 +221,7 @@ impl RPCRateLimiter {
         self.goodbye_rl.prune(time_since_start);
         self.bbrange_rl.prune(time_since_start);
         self.bbroots_rl.prune(time_since_start);
+        self.blbrange_rl.prune(time_since_start);
     }
 }
 

beacon_node/lighthouse_network/src/service/gossip_cache.rs

@@ -20,6 +20,8 @@ pub struct GossipCache {
     topic_msgs: HashMap<GossipTopic, HashMap<Vec<u8>, Key>>,
     /// Timeout for blocks.
     beacon_block: Option<Duration>,
+    /// Timeout for blobs.
+    blobs_sidecar: Option<Duration>,
     /// Timeout for aggregate attestations.
     aggregates: Option<Duration>,
     /// Timeout for attestations.
@@ -41,6 +43,8 @@ pub struct GossipCacheBuilder {
     default_timeout: Option<Duration>,
     /// Timeout for blocks.
     beacon_block: Option<Duration>,
+    /// Timeout for blob sidecars.
+    blobs_sidecar: Option<Duration>,
     /// Timeout for aggregate attestations.
     aggregates: Option<Duration>,
     /// Timeout for attestations.
@@ -117,6 +121,7 @@ impl GossipCacheBuilder {
         let GossipCacheBuilder {
             default_timeout,
             beacon_block,
+            blobs_sidecar,
             aggregates,
             attestation,
             voluntary_exit,
@@ -129,6 +134,7 @@ impl GossipCacheBuilder {
             expirations: DelayQueue::default(),
             topic_msgs: HashMap::default(),
             beacon_block: beacon_block.or(default_timeout),
+            blobs_sidecar: blobs_sidecar.or(default_timeout),
             aggregates: aggregates.or(default_timeout),
             attestation: attestation.or(default_timeout),
             voluntary_exit: voluntary_exit.or(default_timeout),
@@ -151,8 +157,7 @@ impl GossipCache {
     pub fn insert(&mut self, topic: GossipTopic, data: Vec<u8>) {
         let expire_timeout = match topic.kind() {
             GossipKind::BeaconBlock => self.beacon_block,
-            //FIXME(sean) use its own timeout
+            GossipKind::BlobsSidecar => self.blobs_sidecar,
-            GossipKind::Blob => self.beacon_block,
             GossipKind::BeaconAggregateAndProof => self.aggregates,
             GossipKind::Attestation(_) => self.attestation,
             GossipKind::VoluntaryExit => self.voluntary_exit,

beacon_node/lighthouse_network/src/service/mod.rs

@@ -10,6 +10,7 @@ use crate::peer_manager::{MIN_OUTBOUND_ONLY_FACTOR, PEER_EXCESS_FACTOR, PRIORITY
 use crate::service::behaviour::BehaviourEvent;
 pub use crate::service::behaviour::Gossipsub;
 use crate::rpc::*;
+use crate::rpc::methods::BlobsByRangeRequest;
 use crate::service::{Context as ServiceContext, METADATA_FILENAME};
 use crate::types::{
     subnet_from_topic_hash, GossipEncoding, GossipKind, GossipTopic, SnappyTransform, Subnet,
@@ -28,20 +29,22 @@ use libp2p::gossipsub::subscription_filter::MaxCountSubscriptionFilter;
 use libp2p::gossipsub::{
     GossipsubEvent, IdentTopic as Topic, MessageAcceptance, MessageAuthenticity, MessageId,
 };
-use libp2p::identify::{Identify, IdentifyConfig, IdentifyEvent};
+use slog::{crit, debug, o, trace, warn};
-use libp2p::multiaddr::{Multiaddr, Protocol as MProtocol};
+use ssz::Encode;
-use libp2p::swarm::{ConnectionLimits, Swarm, SwarmBuilder, SwarmEvent};
+use types::blobs_sidecar::BlobsSidecar;
-use libp2p::PeerId;
+use std::collections::HashSet;
-use slog::{crit, debug, info, o, trace, warn};
+use std::fs::File;
-
+use std::io::Write;
-use std::marker::PhantomData;
+use std::path::{Path, PathBuf};
-use std::path::PathBuf;
+use std::{
-use std::pin::Pin;
+    collections::VecDeque,
-use std::sync::Arc;
+    marker::PhantomData,
-use std::task::{Context, Poll};
+    sync::Arc,
+    task::{Context, Poll},
+};
 use types::{
-    consts::altair::SYNC_COMMITTEE_SUBNET_COUNT, EnrForkId, EthSpec, ForkContext, Slot, SubnetId,
+    consts::altair::SYNC_COMMITTEE_SUBNET_COUNT, EnrForkId, EthSpec, ForkContext,
-    BlobsSidecar, SignedBeaconBlock, SyncSubnetId
+    SignedBeaconBlock, Slot, SubnetId, SyncSubnetId, VariableList
 };
 use crate::rpc::methods::TxBlobsByRangeRequest;
 use utils::{build_transport, strip_peer_id, MAX_CONNECTIONS_PER_PEER};
@@ -991,6 +994,9 @@ impl<AppReqId: ReqId, TSpec: EthSpec> Network<AppReqId, TSpec> {
             Request::BlocksByRoot { .. } => {
                 metrics::inc_counter_vec(&metrics::TOTAL_RPC_REQUESTS, &["blocks_by_root"])
             }
+            Request::BlobsByRange { .. } => {
+                metrics::inc_counter_vec(&metrics::TOTAL_RPC_REQUESTS, &["blobs_by_range"])
+            }
         }
         NetworkEvent::RequestReceived {
             peer_id,
@@ -1254,6 +1260,9 @@ impl<AppReqId: ReqId, TSpec: EthSpec> Network<AppReqId, TSpec> {
                         );
                         Some(event)
                     }
+                    InboundRequest::BlobsByRange(req) => {
+                        self.propagate_request(peer_request_id, peer_id, Request::BlobsByRange(req))
+                    }
                 }
             }
             Ok(RPCReceived::Response(id, resp)) => {
@@ -1284,6 +1293,9 @@ impl<AppReqId: ReqId, TSpec: EthSpec> Network<AppReqId, TSpec> {
                     RPCResponse::BlocksByRoot(resp) => {
                         self.build_response(id, peer_id, Response::BlocksByRoot(Some(resp)))
                     }
+                    RPCResponse::BlobsByRange(resp) => {
+                        self.propagate_response(id, peer_id, Response::BlobsByRange(Some(resp)))
+                    }
                 }
             }
             Ok(RPCReceived::EndOfStream(id, termination)) => {
@@ -1291,6 +1303,7 @@ impl<AppReqId: ReqId, TSpec: EthSpec> Network<AppReqId, TSpec> {
                     ResponseTermination::BlocksByRange => Response::BlocksByRange(None),
                     ResponseTermination::TxBlobsByRange => Response::TxBlobsByRange(None),
                     ResponseTermination::BlocksByRoot => Response::BlocksByRoot(None),
+                    ResponseTermination::BlobsByRange => Response::BlobsByRange(None),
                 };
                 self.build_response(id, peer_id, response)
             }

beacon_node/lighthouse_network/src/types/pubsub.rs

@@ -11,14 +11,18 @@ use std::sync::Arc;
 use types::{
     Attestation, AttesterSlashing, BlobsSidecar, EthSpec, ForkContext, ForkName, ProposerSlashing,
     SignedAggregateAndProof, SignedBeaconBlock, SignedBeaconBlockAltair, SignedBeaconBlockBase,
-    SignedBeaconBlockCapella, SignedBeaconBlockMerge, SignedContributionAndProof,
+    SignedBeaconBlockMerge, SignedBeaconBlockEip4844, SignedContributionAndProof, SignedVoluntaryExit, SubnetId,
-    SignedVoluntaryExit, SubnetId, SyncCommitteeMessage, SyncSubnetId,
+    SyncCommitteeMessage, SyncSubnetId,
 };
+use types::blobs_sidecar::BlobsSidecar;
+use types::signed_blobs_sidecar::SignedBlobsSidecar;
 
 #[derive(Debug, Clone, PartialEq)]
 pub enum PubsubMessage<T: EthSpec> {
     /// Gossipsub message providing notification of a new block.
     BeaconBlock(Arc<SignedBeaconBlock<T>>),
+    /// Gossipsub message providing notification of a new blobs sidecar.
+    BlobsSidecars(Arc<SignedBlobsSidecar<T>>),
     /// Gossipsub message providing notification of a Aggregate attestation and associated proof.
     AggregateAndProofAttestation(Box<SignedAggregateAndProof<T>>),
     /// Gossipsub message providing notification of a raw un-aggregated attestation with its shard id.
@@ -106,7 +110,7 @@ impl<T: EthSpec> PubsubMessage<T> {
     pub fn kind(&self) -> GossipKind {
         match self {
             PubsubMessage::BeaconBlock(_) => GossipKind::BeaconBlock,
-            PubsubMessage::Blob(_) => GossipKind::Blob,
+            PubsubMessage::BlobsSidecars(_) => GossipKind::BlobsSidecar,
             PubsubMessage::AggregateAndProofAttestation(_) => GossipKind::BeaconAggregateAndProof,
             PubsubMessage::Attestation(attestation_data) => {
                 GossipKind::Attestation(attestation_data.0)
@@ -168,8 +172,12 @@ impl<T: EthSpec> PubsubMessage<T> {
                                     SignedBeaconBlockMerge::from_ssz_bytes(data)
                                         .map_err(|e| format!("{:?}", e))?,
                                 ),
-                                Some(ForkName::Capella) => SignedBeaconBlock::<T>::Capella(
+                                Some(ForkName::Eip4844) => SignedBeaconBlock::<T>::Eip4844(
-                                    SignedBeaconBlockCapella::from_ssz_bytes(data)
+                                    SignedBeaconBlockEip4844::from_ssz_bytes(data)
+                                        .map_err(|e| format!("{:?}", e))?,
+                                ),
+                                Some(ForkName::Eip4844) => SignedBeaconBlock::<T>::Eip4844(
+                                    SignedBeaconBlockEip4844::from_ssz_bytes(data)
                                         .map_err(|e| format!("{:?}", e))?,
                                 ),
                                 None => {
@@ -181,11 +189,10 @@ impl<T: EthSpec> PubsubMessage<T> {
                             };
                         Ok(PubsubMessage::BeaconBlock(Arc::new(beacon_block)))
                     }
-                    GossipKind::Blob => {
+                    GossipKind::BlobsSidecar => {
-                        //FIXME(sean) verify against fork context
+                        let blobs_sidecar = SignedBlobsSidecar::from_ssz_bytes(data)
-                        let blob =
+                            .map_err(|e| format!("{:?}", e))?;
-                            BlobsSidecar::from_ssz_bytes(data).map_err(|e| format!("{:?}", e))?;
+                        Ok(PubsubMessage::BlobsSidecars(Arc::new(blobs_sidecar)))
-                        Ok(PubsubMessage::Blob(Box::new(blob)))
                     }
                     GossipKind::VoluntaryExit => {
                         let voluntary_exit = SignedVoluntaryExit::from_ssz_bytes(data)
@@ -231,7 +238,7 @@ impl<T: EthSpec> PubsubMessage<T> {
         // messages for us.
         match &self {
             PubsubMessage::BeaconBlock(data) => data.as_ssz_bytes(),
-            PubsubMessage::Blob(data) => data.as_ssz_bytes(),
+            PubsubMessage::BlobsSidecars(data) => data.as_ssz_bytes(),
             PubsubMessage::AggregateAndProofAttestation(data) => data.as_ssz_bytes(),
             PubsubMessage::VoluntaryExit(data) => data.as_ssz_bytes(),
             PubsubMessage::ProposerSlashing(data) => data.as_ssz_bytes(),
@@ -252,10 +259,11 @@ impl<T: EthSpec> std::fmt::Display for PubsubMessage<T> {
                 block.slot(),
                 block.message().proposer_index()
             ),
-            PubsubMessage::Blob(blob) => write!(
+            PubsubMessage::BlobsSidecars(blobs) => write!(
                 f,
-                "Tx Blob: slot: {}, beacon_block_root: {}",
+                "Blobs Sidecar: slot: {}, blobs: {}",
-                blob.beacon_block_slot, blob.beacon_block_root
+                blobs.message.beacon_block_slot,
+                blobs.message.blobs.len(),
             ),
             PubsubMessage::AggregateAndProofAttestation(att) => write!(
                 f,

beacon_node/lighthouse_network/src/types/topics.rs

@@ -11,8 +11,7 @@ use crate::Subnet;
 pub const TOPIC_PREFIX: &str = "eth2";
 pub const SSZ_SNAPPY_ENCODING_POSTFIX: &str = "ssz_snappy";
 pub const BEACON_BLOCK_TOPIC: &str = "beacon_block";
-//FIXME(sean) check this name
+pub const BLOBS_SIDECAR_TOPIC: &str = "blobs_sidecar";
-pub const BLOB_TOPIC: &str = "tx_blob";
 pub const BEACON_AGGREGATE_AND_PROOF_TOPIC: &str = "beacon_aggregate_and_proof";
 pub const BEACON_ATTESTATION_PREFIX: &str = "beacon_attestation_";
 pub const VOLUNTARY_EXIT_TOPIC: &str = "voluntary_exit";
@@ -21,8 +20,9 @@ pub const ATTESTER_SLASHING_TOPIC: &str = "attester_slashing";
 pub const SIGNED_CONTRIBUTION_AND_PROOF_TOPIC: &str = "sync_committee_contribution_and_proof";
 pub const SYNC_COMMITTEE_PREFIX_TOPIC: &str = "sync_committee_";
 
-pub const CORE_TOPICS: [GossipKind; 6] = [
+pub const CORE_TOPICS: [GossipKind; 7] = [
     GossipKind::BeaconBlock,
+    GossipKind::BlobsSidecar,
     GossipKind::BeaconAggregateAndProof,
     GossipKind::VoluntaryExit,
     GossipKind::ProposerSlashing,
@@ -49,7 +49,8 @@ pub struct GossipTopic {
 pub enum GossipKind {
     /// Topic for publishing beacon blocks.
     BeaconBlock,
-    Blob,
+    /// Topic for publishing blob sidecars.
+    BlobsSidecar,
     /// Topic for publishing aggregate attestations and proofs.
     BeaconAggregateAndProof,
     /// Topic for publishing raw attestations on a particular subnet.
@@ -181,7 +182,7 @@ impl From<GossipTopic> for String {
 
         let kind = match topic.kind {
             GossipKind::BeaconBlock => BEACON_BLOCK_TOPIC.into(),
-            GossipKind::Blob => BLOB_TOPIC.into(),
+            GossipKind::BlobsSidecar => BLOBS_SIDECAR_TOPIC.into(),
             GossipKind::BeaconAggregateAndProof => BEACON_AGGREGATE_AND_PROOF_TOPIC.into(),
             GossipKind::VoluntaryExit => VOLUNTARY_EXIT_TOPIC.into(),
             GossipKind::ProposerSlashing => PROPOSER_SLASHING_TOPIC.into(),
@@ -210,7 +211,7 @@ impl std::fmt::Display for GossipTopic {
 
         let kind = match self.kind {
             GossipKind::BeaconBlock => BEACON_BLOCK_TOPIC.into(),
-            GossipKind::Blob => BLOB_TOPIC.into(),
+            GossipKind::BlobsSidecar => BLOBS_SIDECAR_TOPIC.into(),
             GossipKind::BeaconAggregateAndProof => BEACON_AGGREGATE_AND_PROOF_TOPIC.into(),
             GossipKind::VoluntaryExit => VOLUNTARY_EXIT_TOPIC.into(),
             GossipKind::ProposerSlashing => PROPOSER_SLASHING_TOPIC.into(),

beacon_node/lighthouse_network/tests/common/mod.rs

@@ -32,17 +32,17 @@ pub fn fork_context(fork_name: ForkName) -> ForkContext {
     let mut chain_spec = E::default_spec();
     let altair_fork_epoch = Epoch::new(1);
     let merge_fork_epoch = Epoch::new(2);
-    let capella_fork_epoch = Epoch::new(3);
+    let eip4844_fork_epoch = Epoch::new(3);
 
     chain_spec.altair_fork_epoch = Some(altair_fork_epoch);
     chain_spec.bellatrix_fork_epoch = Some(merge_fork_epoch);
-    chain_spec.capella_fork_epoch = Some(capella_fork_epoch);
+    chain_spec.eip4844_fork_epoch = Some(eip4844_fork_epoch);
 
     let current_slot = match fork_name {
         ForkName::Base => Slot::new(0),
         ForkName::Altair => altair_fork_epoch.start_slot(E::slots_per_epoch()),
         ForkName::Merge => merge_fork_epoch.start_slot(E::slots_per_epoch()),
-        ForkName::Capella => capella_fork_epoch.start_slot(E::slots_per_epoch()),
+        ForkName::Eip4844 => eip4844_fork_epoch.start_slot(E::slots_per_epoch()),
     };
     ForkContext::new::<E>(current_slot, Hash256::zero(), &chain_spec)
 }

beacon_node/network/src/beacon_processor/mod.rs

@@ -45,7 +45,7 @@ use beacon_chain::{BeaconChain, BeaconChainTypes, GossipVerifiedBlock};
 use derivative::Derivative;
 use futures::stream::{Stream, StreamExt};
 use futures::task::Poll;
-use lighthouse_network::rpc::methods::TxBlobsByRangeRequest;
+use lighthouse_network::rpc::methods::BlobsByRangeRequest;
 use lighthouse_network::{
     rpc::{BlocksByRangeRequest, BlocksByRootRequest, StatusMessage},
     Client, MessageId, NetworkGlobals, PeerId, PeerRequestId,
@@ -66,6 +66,7 @@ use types::{
     SignedAggregateAndProof, SignedBeaconBlock, SignedContributionAndProof, SignedVoluntaryExit,
     SubnetId, SyncCommitteeMessage, SyncSubnetId,
 };
+use types::signed_blobs_sidecar::SignedBlobsSidecar;
 use work_reprocessing_queue::{
     spawn_reprocess_scheduler, QueuedAggregate, QueuedRpcBlock, QueuedUnaggregate, ReadyWork,
 };
@@ -190,7 +191,7 @@ pub const GOSSIP_ATTESTATION_BATCH: &str = "gossip_attestation_batch";
 pub const GOSSIP_AGGREGATE: &str = "gossip_aggregate";
 pub const GOSSIP_AGGREGATE_BATCH: &str = "gossip_aggregate_batch";
 pub const GOSSIP_BLOCK: &str = "gossip_block";
-pub const GOSSIP_BLOB: &str = "gossip_blob";
+pub const GOSSIP_BLOBS_SIDECAR: &str = "gossip_blobs_sidecar";
 pub const DELAYED_IMPORT_BLOCK: &str = "delayed_import_block";
 pub const GOSSIP_VOLUNTARY_EXIT: &str = "gossip_voluntary_exit";
 pub const GOSSIP_PROPOSER_SLASHING: &str = "gossip_proposer_slashing";
@@ -201,8 +202,8 @@ pub const RPC_BLOCK: &str = "rpc_block";
 pub const CHAIN_SEGMENT: &str = "chain_segment";
 pub const STATUS_PROCESSING: &str = "status_processing";
 pub const BLOCKS_BY_RANGE_REQUEST: &str = "blocks_by_range_request";
-pub const TX_BLOBS_BY_RANGE_REQUEST: &str = "tx_blobs_by_range_request";
 pub const BLOCKS_BY_ROOTS_REQUEST: &str = "blocks_by_roots_request";
+pub const BLOBS_BY_RANGE_REQUEST: &str = "blobs_by_range_request";
 pub const UNKNOWN_BLOCK_ATTESTATION: &str = "unknown_block_attestation";
 pub const UNKNOWN_BLOCK_AGGREGATE: &str = "unknown_block_aggregate";
 
@@ -408,20 +409,21 @@ impl<T: BeaconChainTypes> WorkEvent<T> {
         }
     }
 
-    pub fn gossip_tx_blob_block(
+    /// Create a new `Work` event for some blobs sidecar.
+    pub fn gossip_blobs_sidecar(
         message_id: MessageId,
         peer_id: PeerId,
         peer_client: Client,
-        blob: Box<BlobsSidecar<T::EthSpec>>,
+        blobs: Arc<SignedBlobsSidecar<T::EthSpec>>,
         seen_timestamp: Duration,
     ) -> Self {
         Self {
             drop_during_sync: false,
-            work: Work::GossipBlob {
+            work: Work::GossipBlobsSidecar {
                 message_id,
                 peer_id,
                 peer_client,
-                blob,
+                blobs,
                 seen_timestamp,
             },
         }
@@ -599,6 +601,21 @@ impl<T: BeaconChainTypes> WorkEvent<T> {
         }
     }
 
+    pub fn blobs_by_range_request(
+        peer_id: PeerId,
+        request_id: PeerRequestId,
+        request: BlobsByRangeRequest,
+    ) -> Self {
+        Self {
+            drop_during_sync: false,
+            work: Work::BlobsByRangeRequest {
+                peer_id,
+                request_id,
+                request,
+            },
+        }
+    }
+
     /// Get a `str` representation of the type of work this `WorkEvent` contains.
     pub fn work_type(&self) -> &'static str {
         self.work.str_id()
@@ -717,6 +734,13 @@ pub enum Work<T: BeaconChainTypes> {
         block: Arc<SignedBeaconBlock<T::EthSpec>>,
         seen_timestamp: Duration,
     },
+    GossipBlobsSidecar {
+        message_id: MessageId,
+        peer_id: PeerId,
+        peer_client: Client,
+        blobs: Arc<SignedBlobsSidecar<T::EthSpec>>,
+        seen_timestamp: Duration,
+    },
     GossipBlob {
         message_id: MessageId,
         peer_id: PeerId,
@@ -787,6 +811,11 @@ pub enum Work<T: BeaconChainTypes> {
         request_id: PeerRequestId,
         request: BlocksByRootRequest,
     },
+    BlobsByRangeRequest {
+        peer_id: PeerId,
+        request_id: PeerRequestId,
+        request: BlobsByRangeRequest,
+    }
 }
 
 impl<T: BeaconChainTypes> Work<T> {
@@ -798,7 +827,7 @@ impl<T: BeaconChainTypes> Work<T> {
             Work::GossipAggregate { .. } => GOSSIP_AGGREGATE,
             Work::GossipAggregateBatch { .. } => GOSSIP_AGGREGATE_BATCH,
             Work::GossipBlock { .. } => GOSSIP_BLOCK,
-            Work::GossipBlob { .. } => GOSSIP_BLOB,
+            Work::GossipBlobsSidecar { .. } => GOSSIP_BLOBS_SIDECAR,
             Work::DelayedImportBlock { .. } => DELAYED_IMPORT_BLOCK,
             Work::GossipVoluntaryExit { .. } => GOSSIP_VOLUNTARY_EXIT,
             Work::GossipProposerSlashing { .. } => GOSSIP_PROPOSER_SLASHING,
@@ -811,6 +840,7 @@ impl<T: BeaconChainTypes> Work<T> {
             Work::BlocksByRangeRequest { .. } => BLOCKS_BY_RANGE_REQUEST,
             Work::TxBlobsByRangeRequest { .. } => TX_BLOBS_BY_RANGE_REQUEST,
             Work::BlocksByRootsRequest { .. } => BLOCKS_BY_ROOTS_REQUEST,
+            Work::BlobsByRangeRequest {..} => BLOBS_BY_RANGE_REQUEST,
             Work::UnknownBlockAttestation { .. } => UNKNOWN_BLOCK_ATTESTATION,
             Work::UnknownBlockAggregate { .. } => UNKNOWN_BLOCK_AGGREGATE,
         }
@@ -949,13 +979,14 @@ impl<T: BeaconChainTypes> BeaconProcessor<T> {
         let mut chain_segment_queue = FifoQueue::new(MAX_CHAIN_SEGMENT_QUEUE_LEN);
         let mut backfill_chain_segment = FifoQueue::new(MAX_CHAIN_SEGMENT_QUEUE_LEN);
         let mut gossip_block_queue = FifoQueue::new(MAX_GOSSIP_BLOCK_QUEUE_LEN);
-        let mut gossip_blob_queue = FifoQueue::new(MAX_GOSSIP_BLOB_QUEUE_LEN);
+        let mut gossip_blobs_sidecar_queue = FifoQueue::new(MAX_GOSSIP_BLOCK_QUEUE_LEN);
         let mut delayed_block_queue = FifoQueue::new(MAX_DELAYED_BLOCK_QUEUE_LEN);
 
         let mut status_queue = FifoQueue::new(MAX_STATUS_QUEUE_LEN);
         let mut bbrange_queue = FifoQueue::new(MAX_BLOCKS_BY_RANGE_QUEUE_LEN);
         let mut txbbrange_queue = FifoQueue::new(MAX_TX_BLOBS_BY_RANGE_QUEUE_LEN);
         let mut bbroots_queue = FifoQueue::new(MAX_BLOCKS_BY_ROOTS_QUEUE_LEN);
+        let mut blbrange_queue = FifoQueue::new(MAX_BLOCKS_BY_ROOTS_QUEUE_LEN);
 
         // Channels for sending work to the re-process scheduler (`work_reprocessing_tx`) and to
         // receive them back once they are ready (`ready_work_rx`).
@@ -1267,8 +1298,8 @@ impl<T: BeaconChainTypes> BeaconProcessor<T> {
                             Work::GossipBlock { .. } => {
                                 gossip_block_queue.push(work, work_id, &self.log)
                             }
-                            Work::GossipBlob { .. } => {
+                            Work::GossipBlobsSidecar { .. } => {
-                                gossip_blob_queue.push(work, work_id, &self.log)
+                                gossip_blobs_sidecar_queue.push(work, work_id, &self.log)
                             }
                             Work::DelayedImportBlock { .. } => {
                                 delayed_block_queue.push(work, work_id, &self.log)
@@ -1306,6 +1337,9 @@ impl<T: BeaconChainTypes> BeaconProcessor<T> {
                             Work::BlocksByRootsRequest { .. } => {
                                 bbroots_queue.push(work, work_id, &self.log)
                             }
+                            Work::BlobsByRangeRequest { .. } => {
+                                blbrange_queue.push(work, work_id, &self.log)
+                            }
                             Work::UnknownBlockAttestation { .. } => {
                                 unknown_block_attestation_queue.push(work)
                             }
@@ -1526,6 +1560,28 @@ impl<T: BeaconChainTypes> BeaconProcessor<T> {
                     )
                     .await
             }),
+            /*
+             * Verification for blobs sidecars received on gossip.
+             */
+            Work::GossipBlobsSidecar {
+                message_id,
+                peer_id,
+                peer_client,
+                blobs,
+                seen_timestamp,
+            } => task_spawner.spawn_async(async move {
+                worker
+                    .process_gossip_blobs_sidecar(
+                        message_id,
+                        peer_id,
+                        peer_client,
+                        blobs,
+                        work_reprocessing_tx,
+                        duplicate_cache,
+                        seen_timestamp,
+                    )
+                    .await
+            }),
             /*
              * Import for blocks that we received earlier than their intended slot.
              */
@@ -1664,6 +1720,21 @@ impl<T: BeaconChainTypes> BeaconProcessor<T> {
                     request,
                 )
             }),
+
+            Work::BlobsByRangeRequest {
+                peer_id,
+                request_id,
+                request
+            } => task_spawner.spawn_blocking_with_manual_send_idle(move |send_idle_on_drop| {
+                worker.handle_blobs_by_range_request(
+                    sub_executor,
+                    send_idle_on_drop,
+                    peer_id,
+                    request_id,
+                    request,
+                )
+            }),
+
             Work::UnknownBlockAttestation {
                 message_id,
                 peer_id,

beacon_node/network/src/beacon_processor/worker/gossip_methods.rs

@@ -22,6 +22,7 @@ use types::{
     ProposerSlashing, SignedAggregateAndProof, SignedBeaconBlock, SignedContributionAndProof,
     SignedVoluntaryExit, Slot, SubnetId, SyncCommitteeMessage, SyncSubnetId,
 };
+use types::signed_blobs_sidecar::SignedBlobsSidecar;
 
 use super::{
     super::work_reprocessing_queue::{
@@ -672,6 +673,7 @@ impl<T: BeaconChainTypes> Worker<T> {
             .await
         {
             let block_root = gossip_verified_block.block_root;
+
             if let Some(handle) = duplicate_cache.check_and_insert(block_root) {
                 self.process_gossip_verified_block(
                     peer_id,
@@ -784,6 +786,9 @@ impl<T: BeaconChainTypes> Worker<T> {
 
                 verified_block
             }
+            Err(BlockError::MissingSidecar) => {
+               todo!(); //is relevant?
+            }
             Err(BlockError::ParentUnknown(block)) => {
                 debug!(
                     self.log,
@@ -946,6 +951,22 @@ impl<T: BeaconChainTypes> Worker<T> {
         let block: Arc<_> = verified_block.block.clone();
         let block_root = verified_block.block_root;
 
+        let sidecar = if verified_block.block.message()
+            .body().blob_kzg_commitments().map(|committments| committments.is_empty()).unwrap_or(true) {
+            None
+        } else if let Some(sidecar) = self.chain.sidecar_waiting_for_block.lock().as_ref() {
+            if sidecar.message.beacon_block_root == verified_block.block_root() {
+                Some(sidecar.clone())
+            } else {
+                *self.chain.block_waiting_for_sidecar.lock() = Some(verified_block);
+                return
+            }
+        } else {
+            *self.chain.block_waiting_for_sidecar.lock() = Some(verified_block);
+            // we need the sidecar but dont have it yet
+            return
+        };
+
         match self
             .chain
             .process_block(block_root, verified_block, CountUnrealized::True)
@@ -1013,6 +1034,10 @@ impl<T: BeaconChainTypes> Worker<T> {
                     }
                 };
             }
+        } else {
+            *self.chain.sidecar_waiting_for_block.lock() = Some(blobs);
+        }
+    }
 
     pub fn process_gossip_voluntary_exit(
         self,

beacon_node/network/src/beacon_processor/worker/rpc_methods.rs

@@ -6,13 +6,14 @@ use beacon_chain::{BeaconChainError, BeaconChainTypes, HistoricalBlockError, Whe
 use itertools::process_results;
 use lighthouse_network::rpc::StatusMessage;
 use lighthouse_network::rpc::*;
+use lighthouse_network::rpc::methods::BlobsByRangeRequest;
 use lighthouse_network::{PeerId, PeerRequestId, ReportSource, Response, SyncInfo};
 use slog::{debug, error};
 use lighthouse_network::rpc::methods::TxBlobsByRangeRequest;
 use slot_clock::SlotClock;
 use std::sync::Arc;
 use task_executor::TaskExecutor;
-use types::{Epoch, EthSpec, Hash256, Slot};
+use types::{Epoch, EthSpec, Hash256, Slot, VariableList};
 
 use super::Worker;
 
@@ -382,4 +383,150 @@ impl<T: BeaconChainTypes> Worker<T> {
             "load_blocks_by_range_blocks",
         );
     }
+
+    /// Handle a `BlobsByRange` request from the peer.
+    pub fn handle_blobs_by_range_request(
+        self,
+        executor: TaskExecutor,
+        send_on_drop: SendOnDrop,
+        peer_id: PeerId,
+        request_id: PeerRequestId,
+        mut req: BlobsByRangeRequest,
+    ) {
+        debug!(self.log, "Received BlobsByRange Request";
+        "peer_id" => %peer_id,
+        "count" => req.count,
+        "start_slot" => req.start_slot,
+    );
+
+    // Should not send more than max request blocks
+    if req.count > MAX_REQUEST_BLOCKS {
+        req.count = MAX_REQUEST_BLOCKS;
+    }
+
+    let forwards_block_root_iter = match self
+        .chain
+        .forwards_iter_block_roots(Slot::from(req.start_slot))
+    {
+        Ok(iter) => iter,
+        Err(BeaconChainError::HistoricalBlockError(
+            HistoricalBlockError::BlockOutOfRange {
+                slot,
+                oldest_block_slot,
+            },
+        )) => {
+            debug!(self.log, "Range request failed during backfill"; "requested_slot" => slot, "oldest_known_slot" => oldest_block_slot);
+            return self.send_error_response(
+                peer_id,
+                RPCResponseErrorCode::ResourceUnavailable,
+                "Backfilling".into(),
+                request_id,
+            );
+        }
+        Err(e) => return error!(self.log, "Unable to obtain root iter"; "error" => ?e),
+    };
+
+    // Pick out the required blocks, ignoring skip-slots.
+    let mut last_block_root = None;
+    let maybe_block_roots = process_results(forwards_block_root_iter, |iter| {
+        iter.take_while(|(_, slot)| slot.as_u64() < req.start_slot.saturating_add(req.count))
+            // map skip slots to None
+            .map(|(root, _)| {
+                let result = if Some(root) == last_block_root {
+                    None
+                } else {
+                    Some(root)
+                };
+                last_block_root = Some(root);
+                result
+            })
+            .collect::<Vec<Option<Hash256>>>()
+    });
+
+    let block_roots = match maybe_block_roots {
+        Ok(block_roots) => block_roots,
+        Err(e) => return error!(self.log, "Error during iteration over blocks"; "error" => ?e),
+    };
+
+    // remove all skip slots
+    let block_roots = block_roots.into_iter().flatten().collect::<Vec<_>>();
+
+    // Fetching blocks is async because it may have to hit the execution layer for payloads.
+    executor.spawn(
+        async move {
+            let mut blocks_sent = 0;
+            let mut send_response = true;
+
+            for root in block_roots {
+                match self.chain.store.get_blobs(&root) {
+                    Ok(Some(blob)) => {
+                        blocks_sent += 1;
+                        self.send_network_message(NetworkMessage::SendResponse {
+                            peer_id,
+                            response: Response::BlobsByRange(Some(Arc::new(VariableList::new(vec![blob.message]).unwrap()))),
+                            id: request_id,
+                        });
+                    }
+                    Ok(None) => {
+                        error!(
+                            self.log,
+                            "Blob in the chain is not in the store";
+                            "request_root" => ?root
+                        );
+                        break;
+                    }
+                    Err(e) => {
+                        error!(
+                            self.log,
+                            "Error fetching block for peer";
+                            "block_root" => ?root,
+                            "error" => ?e
+                        );
+                        break;
+                    }
+                }
+            }
+
+            let current_slot = self
+                .chain
+                .slot()
+                .unwrap_or_else(|_| self.chain.slot_clock.genesis_slot());
+
+            if blocks_sent < (req.count as usize) {
+                debug!(
+                    self.log,
+                    "BlocksByRange Response processed";
+                    "peer" => %peer_id,
+                    "msg" => "Failed to return all requested blocks",
+                    "start_slot" => req.start_slot,
+                    "current_slot" => current_slot,
+                    "requested" => req.count,
+                    "returned" => blocks_sent
+                );
+            } else {
+                debug!(
+                    self.log,
+                    "BlocksByRange Response processed";
+                    "peer" => %peer_id,
+                    "start_slot" => req.start_slot,
+                    "current_slot" => current_slot,
+                    "requested" => req.count,
+                    "returned" => blocks_sent
+                );
+            }
+
+            if send_response {
+                // send the stream terminator
+                self.send_network_message(NetworkMessage::SendResponse {
+                    peer_id,
+                    response: Response::BlobsByRange(None),
+                    id: request_id,
+                });
+            }
+
+            drop(send_on_drop);
+        },
+        "load_blocks_by_range_blocks",
+    );
+    }
 }

beacon_node/network/src/router/mod.rs

@@ -165,12 +165,12 @@ impl<T: BeaconChainTypes> Router<T> {
             Request::BlocksByRange(request) => self
                 .processor
                 .on_blocks_by_range_request(peer_id, id, request),
-            Request::TxBlobsByRange(request) => self
-                .processor
-                .on_tx_blobs_by_range_request(peer_id, id, request),
             Request::BlocksByRoot(request) => self
                 .processor
                 .on_blocks_by_root_request(peer_id, id, request),
+            Request::BlobsByRange(request) => self
+                .processor
+                .on_blobs_by_range_request(peer_id, id, request),
         }
     }
 
@@ -191,14 +191,14 @@ impl<T: BeaconChainTypes> Router<T> {
                 self.processor
                     .on_blocks_by_range_response(peer_id, request_id, beacon_block);
             }
-            Response::TxBlobsByRange(blob_wrapper) => {
-                self.processor
-                    .on_tx_blobs_by_range_response(peer_id, request_id, blob_wrapper);
-            }
             Response::BlocksByRoot(beacon_block) => {
                 self.processor
                     .on_blocks_by_root_response(peer_id, request_id, beacon_block);
             }
+            Response::BlobsByRange(beacon_blob) => {
+                self.processor
+                    .on_blobs_by_range_response(peer_id, request_id, beacon_blob);
+            }
         }
     }
 
@@ -236,12 +236,12 @@ impl<T: BeaconChainTypes> Router<T> {
                     block,
                 );
             }
-            PubsubMessage::Blob(blob) => {
+            PubsubMessage::BlobsSidecars(blobs) => {
-                self.processor.on_tx_blob_gossip(
+                self.processor.on_blobs_gossip(
                     id,
                     peer_id,
                     self.network_globals.client(&peer_id),
-                    blob,
+                    blobs,
                 );
             }
             PubsubMessage::VoluntaryExit(exit) => {

beacon_node/network/src/router/processor.rs

@@ -8,6 +8,7 @@ use crate::sync::SyncMessage;
 use beacon_chain::{BeaconChain, BeaconChainError, BeaconChainTypes};
 use lighthouse_network::rpc::methods::TxBlobsByRangeRequest;
 use lighthouse_network::rpc::*;
+use lighthouse_network::rpc::methods::BlobsByRangeRequest;
 use lighthouse_network::{
     Client, MessageId, NetworkGlobals, PeerId, PeerRequestId, Request, Response,
 };
@@ -22,6 +23,7 @@ use types::{
     SignedAggregateAndProof, SignedBeaconBlock, SignedContributionAndProof, SignedVoluntaryExit,
     SubnetId, SyncSubnetId,
 };
+use types::signed_blobs_sidecar::SignedBlobsSidecar;
 
 /// Processes validated messages from the network. It relays necessary data to the syncing thread
 /// and processes blocks from the pubsub network.
@@ -162,6 +164,16 @@ impl<T: BeaconChainTypes> Processor<T> {
         ))
     }
 
+    pub fn on_blobs_by_range_request(
+        &mut self,
+        peer_id: PeerId,
+        request_id: PeerRequestId,
+        request: BlobsByRangeRequest,
+    ) {
+        self.send_beacon_processor_work(BeaconWorkEvent::blobs_by_range_request(
+            peer_id, request_id, request,
+        ))
+    }
     /// Handle a `BlocksByRange` request from the peer.
     pub fn on_blocks_by_range_request(
         &mut self,
@@ -274,6 +286,15 @@ impl<T: BeaconChainTypes> Processor<T> {
         });
     }
 
+    pub fn on_blobs_by_range_response(
+        &mut self,
+        peer_id: PeerId,
+        request_id: RequestId,
+        beacon_blob: Option<Arc<VariableList<BlobsSidecar<T::EthSpec>, <<T as BeaconChainTypes>::EthSpec as EthSpec>::MaxRequestBlobsSidecars>>>,
+    ) {
+
+    }
+
     /// Process a gossip message declaring a new block.
     ///
     /// Attempts to apply to block to the beacon chain. May queue the block for later processing.
@@ -295,18 +316,18 @@ impl<T: BeaconChainTypes> Processor<T> {
         ))
     }
 
-    pub fn on_tx_blob_gossip(
+    pub fn on_blobs_gossip(
         &mut self,
         message_id: MessageId,
         peer_id: PeerId,
         peer_client: Client,
-        blob: Box<BlobsSidecar<T::EthSpec>>,
+        blobs: Arc<SignedBlobsSidecar<T::EthSpec>>,
     ) {
-        self.send_beacon_processor_work(BeaconWorkEvent::gossip_tx_blob_block(
+        self.send_beacon_processor_work(BeaconWorkEvent::gossip_blobs_sidecar(
             message_id,
             peer_id,
             peer_client,
-            blob,
+            blobs,
             timestamp_now(),
         ))
     }

beacon_node/store/src/config.rs

@@ -7,6 +7,7 @@ use types::{EthSpec, MinimalEthSpec};
 pub const PREV_DEFAULT_SLOTS_PER_RESTORE_POINT: u64 = 2048;
 pub const DEFAULT_SLOTS_PER_RESTORE_POINT: u64 = 8192;
 pub const DEFAULT_BLOCK_CACHE_SIZE: usize = 5;
+pub const DEFAULT_BLOB_CACHE_SIZE: usize = 5;
 
 /// Database configuration parameters.
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
@@ -17,6 +18,8 @@ pub struct StoreConfig {
     pub slots_per_restore_point_set_explicitly: bool,
     /// Maximum number of blocks to store in the in-memory block cache.
     pub block_cache_size: usize,
+    /// Maximum number of blobs to store in the in-memory block cache.
+    pub blob_cache_size: usize,
     /// Whether to compact the database on initialization.
     pub compact_on_init: bool,
     /// Whether to compact the database during database pruning.
@@ -43,6 +46,7 @@ impl Default for StoreConfig {
             slots_per_restore_point: MinimalEthSpec::slots_per_historical_root() as u64,
             slots_per_restore_point_set_explicitly: false,
             block_cache_size: DEFAULT_BLOCK_CACHE_SIZE,
+            blob_cache_size: DEFAULT_BLOB_CACHE_SIZE,
             compact_on_init: false,
             compact_on_prune: true,
             prune_payloads: true,

beacon_node/store/src/hot_cold_store.rs

@@ -39,6 +39,7 @@ use std::path::Path;
 use std::sync::Arc;
 use std::time::Duration;
 use types::*;
+use types::signed_blobs_sidecar::SignedBlobsSidecar;
 
 /// On-disk database that stores finalized states efficiently.
 ///
@@ -60,6 +61,8 @@ pub struct HotColdDB<E: EthSpec, Hot: ItemStore<E>, Cold: ItemStore<E>> {
     ///
     /// The hot database also contains all blocks.
     pub hot_db: Hot,
+    /// LRU cache of deserialized blobs. Updated whenever a blob is loaded.
+    blob_cache: Mutex<LruCache<Hash256, SignedBlobsSidecar<E>>>,
     /// LRU cache of deserialized blocks. Updated whenever a block is loaded.
     block_cache: Mutex<LruCache<Hash256, SignedBeaconBlock<E>>>,
     /// Chain spec.
@@ -129,6 +132,7 @@ impl<E: EthSpec> HotColdDB<E, MemoryStore<E>, MemoryStore<E>> {
             cold_db: MemoryStore::open(),
             hot_db: MemoryStore::open(),
             block_cache: Mutex::new(LruCache::new(config.block_cache_size)),
+            blob_cache: Mutex::new(LruCache::new(config.blob_cache_size)),
             config,
             spec,
             log,
@@ -162,6 +166,7 @@ impl<E: EthSpec> HotColdDB<E, LevelDB<E>, LevelDB<E>> {
             cold_db: LevelDB::open(cold_path)?,
             hot_db: LevelDB::open(hot_path)?,
             block_cache: Mutex::new(LruCache::new(config.block_cache_size)),
+            blob_cache: Mutex::new(LruCache::new(config.blob_cache_size)),
             config,
             spec,
             log,
@@ -475,6 +480,44 @@ impl<E: EthSpec, Hot: ItemStore<E>, Cold: ItemStore<E>> HotColdDB<E, Hot, Cold>
             .key_delete(DBColumn::ExecPayload.into(), block_root.as_bytes())
     }
 
+    pub fn put_blobs(&self,
+                    block_root: &Hash256,
+                    blobs: SignedBlobsSidecar<E>,
+    ) -> Result<(), Error> {
+        self.hot_db.put_bytes(DBColumn::BeaconBlob.into(), block_root.as_bytes(), &blobs.as_ssz_bytes())?;
+        self.blob_cache.lock().push(*block_root, blobs);
+        Ok(())
+    }
+
+    pub fn get_blobs(&self,
+                    block_root: &Hash256,
+    ) -> Result<Option<SignedBlobsSidecar<E>>, Error> {
+        if let Some(blobs) = self.blob_cache.lock().get(block_root) {
+            Ok(Some(blobs.clone()))
+        } else {
+            if let Some(bytes) = self.hot_db.get_bytes(DBColumn::BeaconBlob.into(), block_root.as_bytes())? {
+                let ret = SignedBlobsSidecar::from_ssz_bytes(&bytes)?;
+                self.blob_cache.lock().put(*block_root, ret.clone());
+                Ok(Some(ret))
+            } else {
+                Ok(None)
+            }
+        }
+    }
+
+    pub fn blobs_as_kv_store_ops(
+        &self,
+        key: &Hash256,
+        blobs: &SignedBlobsSidecar<E>,
+        ops: &mut Vec<KeyValueStoreOp>,
+    ) {
+        let db_key = get_key_for_col(DBColumn::BeaconBlob.into(), key.as_bytes());
+        ops.push(KeyValueStoreOp::PutKeyValue(
+            db_key,
+            blobs.as_ssz_bytes(),
+        ));
+    }
+
     pub fn put_state_summary(
         &self,
         state_root: &Hash256,
@@ -702,6 +745,14 @@ impl<E: EthSpec, Hot: ItemStore<E>, Cold: ItemStore<E>> HotColdDB<E, Hot, Cold>
                     self.store_hot_state(&state_root, state, &mut key_value_batch)?;
                 }
 
+                StoreOp::PutBlobs(block_root, blobs) => {
+                    self.blobs_as_kv_store_ops(
+                        &block_root,
+                        &blobs,
+                        &mut key_value_batch,
+                    );
+                }
+
                 StoreOp::PutStateSummary(state_root, summary) => {
                     key_value_batch.push(summary.as_kv_store_op(state_root));
                 }
@@ -746,6 +797,7 @@ impl<E: EthSpec, Hot: ItemStore<E>, Cold: ItemStore<E>> HotColdDB<E, Hot, Cold>
         // Update the block cache whilst holding a lock, to ensure that the cache updates atomically
         // with the database.
         let mut guard = self.block_cache.lock();
+        let mut guard_blob = self.blob_cache.lock();
 
         for op in &batch {
             match op {
@@ -753,6 +805,10 @@ impl<E: EthSpec, Hot: ItemStore<E>, Cold: ItemStore<E>> HotColdDB<E, Hot, Cold>
                     guard.put(*block_root, (**block).clone());
                 }
 
+                StoreOp::PutBlobs(block_root, blobs) => {
+                    guard_blob.put(*block_root, (**blobs).clone());
+                }
+
                 StoreOp::PutState(_, _) => (),
 
                 StoreOp::PutStateSummary(_, _) => (),

beacon_node/store/src/lib.rs

@@ -42,6 +42,7 @@ use parking_lot::MutexGuard;
 use std::sync::Arc;
 use strum::{EnumString, IntoStaticStr};
 pub use types::*;
+use types::signed_blobs_sidecar::SignedBlobsSidecar;
 
 pub type ColumnIter<'a> = Box<dyn Iterator<Item = Result<(Hash256, Vec<u8>), Error>> + 'a>;
 pub type ColumnKeyIter<'a> = Box<dyn Iterator<Item = Result<Hash256, Error>> + 'a>;
@@ -155,6 +156,7 @@ pub trait ItemStore<E: EthSpec>: KeyValueStore<E> + Sync + Send + Sized + 'stati
 pub enum StoreOp<'a, E: EthSpec> {
     PutBlock(Hash256, Arc<SignedBeaconBlock<E>>),
     PutState(Hash256, &'a BeaconState<E>),
+    PutBlobs(Hash256, Arc<SignedBlobsSidecar<E>>),
     PutStateSummary(Hash256, HotStateSummary),
     PutStateTemporaryFlag(Hash256),
     DeleteStateTemporaryFlag(Hash256),
@@ -171,6 +173,8 @@ pub enum DBColumn {
     BeaconMeta,
     #[strum(serialize = "blk")]
     BeaconBlock,
+    #[strum(serialize = "blo")]
+    BeaconBlob,
     /// For full `BeaconState`s in the hot database (finalized or fork-boundary states).
     #[strum(serialize = "ste")]
     BeaconState,

beacon_node/store/src/partial_beacon_state.rs

@@ -14,7 +14,7 @@ use types::*;
 ///
 /// Utilises lazy-loading from separate storage for its vector fields.
 #[superstruct(
-    variants(Base, Altair, Merge, Capella),
+    variants(Base, Altair, Merge, Eip4844),
     variant_attributes(derive(Debug, PartialEq, Clone, Encode, Decode))
 )]
 #[derive(Debug, PartialEq, Clone, Encode)]
@@ -66,9 +66,9 @@ where
     pub current_epoch_attestations: VariableList<PendingAttestation<T>, T::MaxPendingAttestations>,
 
     // Participation (Altair and later)
-    #[superstruct(only(Altair, Merge, Capella))]
+    #[superstruct(only(Altair, Merge, Eip4844))]
     pub previous_epoch_participation: VariableList<ParticipationFlags, T::ValidatorRegistryLimit>,
-    #[superstruct(only(Altair, Merge, Capella))]
+    #[superstruct(only(Altair, Merge, Eip4844))]
     pub current_epoch_participation: VariableList<ParticipationFlags, T::ValidatorRegistryLimit>,
 
     // Finality
@@ -78,17 +78,17 @@ where
     pub finalized_checkpoint: Checkpoint,
 
     // Inactivity
-    #[superstruct(only(Altair, Merge, Capella))]
+    #[superstruct(only(Altair, Merge, Eip4844))]
     pub inactivity_scores: VariableList<u64, T::ValidatorRegistryLimit>,
 
     // Light-client sync committees
-    #[superstruct(only(Altair, Merge, Capella))]
+    #[superstruct(only(Altair, Merge, Eip4844))]
     pub current_sync_committee: Arc<SyncCommittee<T>>,
-    #[superstruct(only(Altair, Merge, Capella))]
+    #[superstruct(only(Altair, Merge, Eip4844))]
     pub next_sync_committee: Arc<SyncCommittee<T>>,
 
     // Execution
-    #[superstruct(only(Merge, Capella))]
+    #[superstruct(only(Merge, Eip4844))]
     pub latest_execution_payload_header: ExecutionPayloadHeader<T>,
 }
 
@@ -178,11 +178,11 @@ impl<T: EthSpec> PartialBeaconState<T> {
                     latest_execution_payload_header
                 ]
             ),
-            BeaconState::Capella(s) => impl_from_state_forgetful!(
+            BeaconState::Eip4844(s) => impl_from_state_forgetful!(
                 s,
                 outer,
-                Capella,
+                Eip4844,
-                PartialBeaconStateCapella,
+                PartialBeaconStateEip4844,
                 [
                     previous_epoch_participation,
                     current_epoch_participation,
@@ -379,10 +379,10 @@ impl<E: EthSpec> TryInto<BeaconState<E>> for PartialBeaconState<E> {
                     latest_execution_payload_header
                 ]
             ),
-            PartialBeaconState::Capella(inner) => impl_try_into_beacon_state!(
+            PartialBeaconState::Eip4844(inner) => impl_try_into_beacon_state!(
                 inner,
-                Capella,
+                Eip4844,
-                BeaconStateCapella,
+                BeaconStateEip4844,
                 [
                     previous_epoch_participation,
                     current_epoch_participation,

common/eth2_config/src/lib.rs

@@ -307,5 +307,10 @@ define_hardcoded_nets!(
         // Set to `true` if the genesis state can be found in the `built_in_network_configs`
         // directory.
         GENESIS_STATE_IS_KNOWN
+    ),
+    (
+        eip4844,
+        "eip4844",
+        GENESIS_STATE_IS_KNOWN
     )
 );

common/eth2_network_config/built_in_network_configs/eip4844/boot_enr.yaml

@@ -0,0 +1,3 @@
+- enr:-MK4QLij8YaVQ6fIi09rDuD9fufxBlCZRXwfM1q6SbNJfy5ZZdAvtlnsfqhIeI0IqeOZdaPExVCfZfR4JJTIuKXFR76GAYJGrqHnh2F0dG5ldHOIAAAAAAAAAACEZXRoMpBCynldgwAP_QMAAAAAAAAAgmlkgnY0gmlwhCJ7uEyJc2VjcDI1NmsxoQJpeftU6RbmIhcFllICznlAMJXL3EwHEGhn73_Gk0wrCYhzeW5jbmV0cwCDdGNwgjLIg3VkcIIu4A
+- enr:-JG4QK27MZvV3QbwdLt055Yhei27SjAsDXMFGCdl-Q7SDiCgR_qbiW3BmcOClehFVJgMa6IfjHeJBdbC0jvrr2NycOqGAYJLWb5kgmlkgnY0gmlwhCJE_eeJc2VjcDI1NmsxoQIecO7Y9C7J2Bs7RNxXaUkU6BfmPKIhEsDScKAoxENaRYN0Y3CCdl-DdWRwgnZf
+- enr:-JG4QExcHW3vzBcE0f_r-93nSA4iBy4qNLthSyTw7p0tlPwjMl1JVTAgLSNHLLZJzOGtelJO4sw37LliuHyJ55zN5J6GAYJLWTvzgmlkgnY0gmlwhCKq1cmJc2VjcDI1NmsxoQJT2d4jtKQbHNw3tZPLhoMlR73o5LNdi-bk_bYq6siwuIN0Y3CCdl-DdWRwgnZf

common/eth2_network_config/built_in_network_configs/eip4844/config.yaml

@@ -0,0 +1,85 @@
+# Prater config
+
+# Extends the mainnet preset
+CONFIG_NAME: 'eip4844'
+PRESET_BASE: 'mainnet'
+
+# Transition
+# ---------------------------------------------------------------
+TERMINAL_TOTAL_DIFFICULTY: 40
+# By default, don't use these params
+TERMINAL_BLOCK_HASH: 0x0000000000000000000000000000000000000000000000000000000000000000
+TERMINAL_BLOCK_HASH_ACTIVATION_EPOCH: 18446744073709551615
+
+# Genesis
+# ---------------------------------------------------------------
+# `2**14` (= 16,384)
+MIN_GENESIS_ACTIVE_VALIDATOR_COUNT: 2
+# Mar-01-2021 08:53:32 AM +UTC
+MIN_GENESIS_TIME: 1653318000
+# Prater area code (Vienna)
+GENESIS_FORK_VERSION: 0x00000ffd
+# Customized for Prater: 1919188 seconds (Mar-23-2021 02:00:00 PM +UTC)
+GENESIS_DELAY: 0
+
+
+# Forking
+# ---------------------------------------------------------------
+# Some forks are disabled for now:
+#  - These may be re-assigned to another fork-version later
+#  - Temporarily set to max uint64 value: 2**64 - 1
+
+# Altair
+ALTAIR_FORK_VERSION: 0x01000ffd
+ALTAIR_FORK_EPOCH: 1
+# Merge
+BELLATRIX_FORK_VERSION: 0x02000ffd
+BELLATRIX_FORK_EPOCH: 2
+# Sharding
+EIP4844_FORK_VERSION: 0x83000ffd
+EIP4844_FORK_EPOCH: 3
+
+# TBD, 2**32 is a placeholder. Merge transition approach is in active R&D.
+TRANSITION_TOTAL_DIFFICULTY: 40
+
+
+# Time parameters
+# ---------------------------------------------------------------
+# 12 seconds
+SECONDS_PER_SLOT: 12
+# 14 (estimate from Eth1 mainnet)
+SECONDS_PER_ETH1_BLOCK: 14
+# 2**8 (= 256) epochs ~27 hours
+MIN_VALIDATOR_WITHDRAWABILITY_DELAY: 256
+# 2**8 (= 256) epochs ~27 hours
+SHARD_COMMITTEE_PERIOD: 256
+# 2**11 (= 2,048) Eth1 blocks ~8 hours
+ETH1_FOLLOW_DISTANCE: 15
+
+
+# Validator cycle
+# ---------------------------------------------------------------
+# 2**2 (= 4)
+INACTIVITY_SCORE_BIAS: 4
+# 2**4 (= 16)
+INACTIVITY_SCORE_RECOVERY_RATE: 16
+# 2**4 * 10**9 (= 16,000,000,000) Gwei
+EJECTION_BALANCE: 16000000000
+# 2**2 (= 4)
+MIN_PER_EPOCH_CHURN_LIMIT: 4
+# 2**16 (= 65,536)
+CHURN_LIMIT_QUOTIENT: 65536
+
+
+# Fork choice
+# ---------------------------------------------------------------
+# 40%
+PROPOSER_SCORE_BOOST: 40
+
+# Deposit contract
+# ---------------------------------------------------------------
+# Ethereum Goerli testnet
+DEPOSIT_CHAIN_ID: 1331
+DEPOSIT_NETWORK_ID: 69
+# Prater test deposit contract on Goerli Testnet
+DEPOSIT_CONTRACT_ADDRESS: 0x8A04d14125D0FDCDc742F4A05C051De07232EDa4

common/eth2_network_config/built_in_network_configs/eip4844/deploy_block.txt

@@ -0,0 +1 @@
+0

common/eth2_network_config/built_in_network_configs/sepolia/config.yaml

@@ -28,9 +28,9 @@ TERMINAL_TOTAL_DIFFICULTY: 17000000000000000
 TERMINAL_BLOCK_HASH: 0x0000000000000000000000000000000000000000000000000000000000000000
 TERMINAL_BLOCK_HASH_ACTIVATION_EPOCH: 18446744073709551615
 
-# Capella
+# Eip4844
-CAPELLA_FORK_VERSION: 0x03001020
+EIP4844_FORK_VERSION: 0x03001020
-CAPELLA_FORK_EPOCH: 18446744073709551615
+EIP4844_FORK_EPOCH: 18446744073709551615
 
 # Sharding
 SHARDING_FORK_VERSION: 0x04001020

consensus/fork_choice/src/fork_choice.rs

@@ -777,7 +777,7 @@ where
                     (parent_justified, parent_finalized)
                 } else {
                     let justification_and_finalization_state = match block {
-                        BeaconBlockRef::Merge(_) | BeaconBlockRef::Altair(_) => {
+                        BeaconBlockRef::Eip4844(_) | BeaconBlockRef::Merge(_) | BeaconBlockRef::Altair(_) => {
                             let participation_cache =
                                 per_epoch_processing::altair::ParticipationCache::new(state, spec)
                                     .map_err(Error::ParticipationCacheBuild)?;

consensus/state_processing/src/common/slash_validator.rs

@@ -45,7 +45,7 @@ pub fn slash_validator<T: EthSpec>(
         validator_effective_balance.safe_div(spec.whistleblower_reward_quotient)?;
     let proposer_reward = match state {
         BeaconState::Base(_) => whistleblower_reward.safe_div(spec.proposer_reward_quotient)?,
-        BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Capella(_) => {
+        BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Eip4844(_) => {
             whistleblower_reward
                 .safe_mul(PROPOSER_WEIGHT)?
                 .safe_div(WEIGHT_DENOMINATOR)?

consensus/state_processing/src/per_block_processing/process_operations.rs

@@ -232,7 +232,7 @@ pub fn process_attestations<'a, T: EthSpec, Payload: ExecPayload<T>>(
         }
         BeaconBlockBodyRef::Altair(_)
         | BeaconBlockBodyRef::Merge(_)
-        | BeaconBlockBodyRef::Capella(_) => {
+        | BeaconBlockBodyRef::Eip4844(_) => {
             altair::process_attestations(
                 state,
                 block_body.attestations(),

consensus/state_processing/src/per_epoch_processing.rs

@@ -37,7 +37,7 @@ pub fn process_epoch<T: EthSpec>(
 
     match state {
         BeaconState::Base(_) => base::process_epoch(state, spec),
-        BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Capella(_) => {
+        BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Eip4844(_) => {
             altair::process_epoch(state, spec)
         }
     }

consensus/types/src/beacon_block.rs

@@ -1,6 +1,6 @@
 use crate::beacon_block_body::{
-    BeaconBlockBodyAltair, BeaconBlockBodyBase, BeaconBlockBodyCapella, BeaconBlockBodyMerge,
+    BeaconBlockBodyAltair, BeaconBlockBodyBase, BeaconBlockBodyMerge, BeaconBlockBodyRef,
-    BeaconBlockBodyRef, BeaconBlockBodyRefMut,
+    BeaconBlockBodyRefMut, BeaconBlockBodyEip4844
 };
 use crate::test_utils::TestRandom;
 use crate::*;
@@ -17,7 +17,7 @@ use tree_hash_derive::TreeHash;
 
 /// A block of the `BeaconChain`.
 #[superstruct(
-    variants(Base, Altair, Merge, Capella),
+    variants(Base, Altair, Merge, Eip4844),
     variant_attributes(
         derive(
             Debug,
@@ -64,8 +64,8 @@ pub struct BeaconBlock<T: EthSpec, Payload: ExecPayload<T> = FullPayload<T>> {
     pub body: BeaconBlockBodyAltair<T, Payload>,
     #[superstruct(only(Merge), partial_getter(rename = "body_merge"))]
     pub body: BeaconBlockBodyMerge<T, Payload>,
-    #[superstruct(only(Capella), partial_getter(rename = "body_capella"))]
+    #[superstruct(only(Eip4844), partial_getter(rename = "body_eip4844"))]
-    pub body: BeaconBlockBodyCapella<T, Payload>,
+    pub body: BeaconBlockBodyEip4844<T, Payload>,
 }
 
 pub type BlindedBeaconBlock<E> = BeaconBlock<E, BlindedPayload<E>>;
@@ -191,7 +191,7 @@ impl<'a, T: EthSpec, Payload: ExecPayload<T>> BeaconBlockRef<'a, T, Payload> {
             BeaconBlockRef::Base { .. } => ForkName::Base,
             BeaconBlockRef::Altair { .. } => ForkName::Altair,
             BeaconBlockRef::Merge { .. } => ForkName::Merge,
-            BeaconBlockRef::Capella { .. } => ForkName::Capella,
+            BeaconBlockRef::Eip4844 { .. } => ForkName::Eip4844,
         };
 
         if fork_at_slot == object_fork {
@@ -545,6 +545,7 @@ macro_rules! impl_from {
 impl_from!(BeaconBlockBase, <E, FullPayload<E>>, <E, BlindedPayload<E>>, |body: BeaconBlockBodyBase<_, _>| body.into());
 impl_from!(BeaconBlockAltair, <E, FullPayload<E>>, <E, BlindedPayload<E>>, |body: BeaconBlockBodyAltair<_, _>| body.into());
 impl_from!(BeaconBlockMerge, <E, FullPayload<E>>, <E, BlindedPayload<E>>, |body: BeaconBlockBodyMerge<_, _>| body.into());
+impl_from!(BeaconBlockEip4844, <E, FullPayload<E>>, <E, BlindedPayload<E>>, |body: BeaconBlockBodyEip4844<_, _>| body.into());
 
 // We can clone blocks with payloads to blocks without payloads, without cloning the payload.
 macro_rules! impl_clone_as_blinded {
@@ -575,6 +576,7 @@ macro_rules! impl_clone_as_blinded {
 impl_clone_as_blinded!(BeaconBlockBase, <E, FullPayload<E>>, <E, BlindedPayload<E>>);
 impl_clone_as_blinded!(BeaconBlockAltair, <E, FullPayload<E>>, <E, BlindedPayload<E>>);
 impl_clone_as_blinded!(BeaconBlockMerge, <E, FullPayload<E>>, <E, BlindedPayload<E>>);
+impl_clone_as_blinded!(BeaconBlockEip4844, <E, FullPayload<E>>, <E, BlindedPayload<E>>);
 
 // A reference to a full beacon block can be cloned into a blinded beacon block, without cloning the
 // execution payload.

consensus/types/src/beacon_block_body.rs

@@ -8,12 +8,13 @@ use std::marker::PhantomData;
 use superstruct::superstruct;
 use test_random_derive::TestRandom;
 use tree_hash_derive::TreeHash;
+use crate::kzg_commitment::KzgCommitment;
 
 /// The body of a `BeaconChain` block, containing operations.
 ///
 /// This *superstruct* abstracts over the hard-fork.
 #[superstruct(
-    variants(Base, Altair, Merge, Capella),
+    variants(Base, Altair, Merge, Eip4844),
     variant_attributes(
         derive(
             Debug,
@@ -47,16 +48,16 @@ pub struct BeaconBlockBody<T: EthSpec, Payload: ExecPayload<T> = FullPayload<T>>
     pub attestations: VariableList<Attestation<T>, T::MaxAttestations>,
     pub deposits: VariableList<Deposit, T::MaxDeposits>,
     pub voluntary_exits: VariableList<SignedVoluntaryExit, T::MaxVoluntaryExits>,
-    #[superstruct(only(Altair, Merge, Capella))]
+    #[superstruct(only(Altair, Merge, Eip4844))]
     pub sync_aggregate: SyncAggregate<T>,
     // We flatten the execution payload so that serde can use the name of the inner type,
     // either `execution_payload` for full payloads, or `execution_payload_header` for blinded
     // payloads.
-    #[superstruct(only(Merge, Capella))]
+    #[superstruct(only(Merge, Eip4844))]
     #[serde(flatten)]
     pub execution_payload: Payload,
-    #[superstruct(only(Capella))]
+    #[superstruct(only(Eip4844))]
-    pub blob_kzgs: VariableList<KZGCommitment, T::MaxBlobsPerBlock>,
+    pub blob_kzg_commitments: VariableList<KzgCommitment, T::MaxBlobsPerBlock>,
     #[superstruct(only(Base, Altair))]
     #[ssz(skip_serializing, skip_deserializing)]
     #[tree_hash(skip_hashing)]
@@ -71,7 +72,7 @@ impl<'a, T: EthSpec> BeaconBlockBodyRef<'a, T> {
             BeaconBlockBodyRef::Base { .. } => ForkName::Base,
             BeaconBlockBodyRef::Altair { .. } => ForkName::Altair,
             BeaconBlockBodyRef::Merge { .. } => ForkName::Merge,
-            BeaconBlockBodyRef::Capella { .. } => ForkName::Capella,
+            BeaconBlockBodyRef::Eip4844 { .. } => ForkName::Eip4844,
         }
     }
 }
@@ -254,6 +255,48 @@ impl<E: EthSpec> From<BeaconBlockBodyMerge<E, FullPayload<E>>>
     }
 }
 
+impl<E: EthSpec> From<BeaconBlockBodyEip4844<E, FullPayload<E>>>
+for (
+    BeaconBlockBodyEip4844<E, BlindedPayload<E>>,
+    Option<ExecutionPayload<E>>,
+)
+{
+    fn from(body: BeaconBlockBodyEip4844<E, FullPayload<E>>) -> Self {
+        let BeaconBlockBodyEip4844 {
+            randao_reveal,
+            eth1_data,
+            graffiti,
+            proposer_slashings,
+            attester_slashings,
+            attestations,
+            deposits,
+            voluntary_exits,
+            sync_aggregate,
+            execution_payload: FullPayload { execution_payload},
+            blob_kzg_commitments,
+        } = body;
+
+        (
+            BeaconBlockBodyEip4844 {
+                randao_reveal,
+                eth1_data,
+                graffiti,
+                proposer_slashings,
+                attester_slashings,
+                attestations,
+                deposits,
+                voluntary_exits,
+                sync_aggregate,
+                execution_payload: BlindedPayload {
+                    execution_payload_header: From::from(&execution_payload),
+                },
+                blob_kzg_commitments,
+            },
+            None,
+        )
+    }
+}
+
 // We can clone a full block into a blinded block, without cloning the payload.
 impl<E: EthSpec> BeaconBlockBodyBase<E, FullPayload<E>> {
     pub fn clone_as_blinded(&self) -> BeaconBlockBodyBase<E, BlindedPayload<E>> {
@@ -301,6 +344,40 @@ impl<E: EthSpec> BeaconBlockBodyMerge<E, FullPayload<E>> {
     }
 }
 
+impl<E: EthSpec> BeaconBlockBodyEip4844<E, FullPayload<E>> {
+    pub fn clone_as_blinded(&self) -> BeaconBlockBodyEip4844<E, BlindedPayload<E>> {
+        let BeaconBlockBodyEip4844 {
+            randao_reveal,
+            eth1_data,
+            graffiti,
+            proposer_slashings,
+            attester_slashings,
+            attestations,
+            deposits,
+            voluntary_exits,
+            sync_aggregate,
+            execution_payload: FullPayload { execution_payload },
+            blob_kzg_commitments,
+        } = self;
+
+        BeaconBlockBodyEip4844 {
+            randao_reveal: randao_reveal.clone(),
+            eth1_data: eth1_data.clone(),
+            graffiti: *graffiti,
+            proposer_slashings: proposer_slashings.clone(),
+            attester_slashings: attester_slashings.clone(),
+            attestations: attestations.clone(),
+            deposits: deposits.clone(),
+            voluntary_exits: voluntary_exits.clone(),
+            sync_aggregate: sync_aggregate.clone(),
+            execution_payload: BlindedPayload {
+                execution_payload_header: From::from(execution_payload),
+            },
+            blob_kzg_commitments: blob_kzg_commitments.clone(),
+        }
+    }
+}
+
 impl<E: EthSpec> From<BeaconBlockBody<E, FullPayload<E>>>
     for (
         BeaconBlockBody<E, BlindedPayload<E>>,

consensus/types/src/beacon_state.rs

@@ -172,7 +172,7 @@ impl From<BeaconStateHash> for Hash256 {
 
 /// The state of the `BeaconChain` at some slot.
 #[superstruct(
-    variants(Base, Altair, Merge, Capella),
+    variants(Base, Altair, Merge, Eip4844),
     variant_attributes(
         derive(
             Derivative,
@@ -250,9 +250,9 @@ where
     pub current_epoch_attestations: VariableList<PendingAttestation<T>, T::MaxPendingAttestations>,
 
     // Participation (Altair and later)
-    #[superstruct(only(Altair, Merge, Capella))]
+    #[superstruct(only(Altair, Merge, Eip4844))]
     pub previous_epoch_participation: VariableList<ParticipationFlags, T::ValidatorRegistryLimit>,
-    #[superstruct(only(Altair, Merge, Capella))]
+    #[superstruct(only(Altair, Merge, Eip4844))]
     pub current_epoch_participation: VariableList<ParticipationFlags, T::ValidatorRegistryLimit>,
 
     // Finality
@@ -267,17 +267,17 @@ where
 
     // Inactivity
     #[serde(with = "ssz_types::serde_utils::quoted_u64_var_list")]
-    #[superstruct(only(Altair, Merge, Capella))]
+    #[superstruct(only(Altair, Merge, Eip4844))]
     pub inactivity_scores: VariableList<u64, T::ValidatorRegistryLimit>,
 
     // Light-client sync committees
-    #[superstruct(only(Altair, Merge, Capella))]
+    #[superstruct(only(Altair, Merge, Eip4844))]
     pub current_sync_committee: Arc<SyncCommittee<T>>,
-    #[superstruct(only(Altair, Merge, Capella))]
+    #[superstruct(only(Altair, Merge, Eip4844))]
     pub next_sync_committee: Arc<SyncCommittee<T>>,
 
     // Execution
-    #[superstruct(only(Merge, Capella))]
+    #[superstruct(only(Merge, Eip4844))]
     pub latest_execution_payload_header: ExecutionPayloadHeader<T>,
 
     // Caching (not in the spec)
@@ -389,7 +389,7 @@ impl<T: EthSpec> BeaconState<T> {
             BeaconState::Base { .. } => ForkName::Base,
             BeaconState::Altair { .. } => ForkName::Altair,
             BeaconState::Merge { .. } => ForkName::Merge,
-            BeaconState::Capella { .. } => ForkName::Capella,
+            BeaconState::Eip4844 { .. } => ForkName::Eip4844,
         };
 
         if fork_at_slot == object_fork {
@@ -1103,7 +1103,7 @@ impl<T: EthSpec> BeaconState<T> {
             BeaconState::Base(state) => (&mut state.validators, &mut state.balances),
             BeaconState::Altair(state) => (&mut state.validators, &mut state.balances),
             BeaconState::Merge(state) => (&mut state.validators, &mut state.balances),
-            BeaconState::Capella(state) => (&mut state.validators, &mut state.balances),
+            BeaconState::Eip4844(state) => (&mut state.validators, &mut state.balances),
         }
     }
 
@@ -1300,14 +1300,14 @@ impl<T: EthSpec> BeaconState<T> {
                 BeaconState::Base(_) => Err(BeaconStateError::IncorrectStateVariant),
                 BeaconState::Altair(state) => Ok(&mut state.current_epoch_participation),
                 BeaconState::Merge(state) => Ok(&mut state.current_epoch_participation),
-                BeaconState::Capella(state) => Ok(&mut state.current_epoch_participation),
+                BeaconState::Eip4844(state) => Ok(&mut state.current_epoch_participation),
             }
         } else if epoch == self.previous_epoch() {
             match self {
                 BeaconState::Base(_) => Err(BeaconStateError::IncorrectStateVariant),
                 BeaconState::Altair(state) => Ok(&mut state.previous_epoch_participation),
                 BeaconState::Merge(state) => Ok(&mut state.previous_epoch_participation),
-                BeaconState::Capella(state) => Ok(&mut state.previous_epoch_participation),
+                BeaconState::Eip4844(state) => Ok(&mut state.previous_epoch_participation),
             }
         } else {
             Err(BeaconStateError::EpochOutOfBounds)
@@ -1612,7 +1612,7 @@ impl<T: EthSpec> BeaconState<T> {
             BeaconState::Base(inner) => BeaconState::Base(inner.clone()),
             BeaconState::Altair(inner) => BeaconState::Altair(inner.clone()),
             BeaconState::Merge(inner) => BeaconState::Merge(inner.clone()),
-            BeaconState::Capella(inner) => BeaconState::Capella(inner.clone()),
+            BeaconState::Eip4844(inner) => BeaconState::Eip4844(inner.clone()),
         };
         if config.committee_caches {
             *res.committee_caches_mut() = self.committee_caches().clone();

consensus/types/src/blob.rs

@@ -0,0 +1,74 @@
+use ssz_types::VariableList;
+use serde::{Deserialize, Deserializer, Serialize, Serializer};
+use ssz::{Decode, DecodeError, Encode};
+use tree_hash::{PackedEncoding, TreeHash};
+use crate::test_utils::RngCore;
+use crate::bls_field_element::BlsFieldElement;
+use crate::{EthSpec, Uint256};
+use crate::test_utils::TestRandom;
+
+#[derive(Default, Debug, PartialEq, Hash, Clone, Serialize, Deserialize)]
+#[serde(transparent)]
+pub struct Blob<T: EthSpec>(pub VariableList<BlsFieldElement, T::FieldElementsPerBlob>);
+
+impl <T: EthSpec> TestRandom for Blob<T> {
+    fn random_for_test(rng: &mut impl RngCore) -> Self {
+        let mut res = Blob(VariableList::empty());
+        for i in 0..4096 {
+            let slice = ethereum_types::U256([rng.next_u64(), rng.next_u64(), rng.next_u64(), rng.next_u64()]);
+            let elem =BlsFieldElement(slice);
+            res.0.push(elem);
+        }
+        res
+    }
+}
+
+impl<T: EthSpec> Encode for Blob<T> {
+    fn is_ssz_fixed_len() -> bool {
+        <VariableList<BlsFieldElement, T::FieldElementsPerBlob> as Encode>::is_ssz_fixed_len()
+    }
+
+    fn ssz_fixed_len() -> usize {
+        <VariableList<BlsFieldElement, T::FieldElementsPerBlob> as Encode>::ssz_fixed_len()
+    }
+
+    fn ssz_bytes_len(&self) -> usize {
+        self.0.ssz_bytes_len()
+    }
+
+    fn ssz_append(&self, buf: &mut Vec<u8>) {
+        self.0.ssz_append(buf)
+    }
+}
+
+impl<T: EthSpec> Decode for Blob<T> {
+    fn is_ssz_fixed_len() -> bool {
+        <VariableList<BlsFieldElement, T::FieldElementsPerBlob> as Decode>::is_ssz_fixed_len()
+    }
+
+    fn ssz_fixed_len() -> usize {
+        <VariableList<BlsFieldElement, T::FieldElementsPerBlob> as Decode>::ssz_fixed_len()
+    }
+
+    fn from_ssz_bytes(bytes: &[u8]) -> Result<Self, DecodeError> {
+        <VariableList<BlsFieldElement, T::FieldElementsPerBlob>>::from_ssz_bytes(bytes).map(Self)
+    }
+}
+
+impl<T: EthSpec> TreeHash for Blob<T> {
+    fn tree_hash_type() -> tree_hash::TreeHashType {
+        <VariableList<BlsFieldElement, T::FieldElementsPerBlob>>::tree_hash_type()
+    }
+
+    fn tree_hash_packed_encoding(&self) -> PackedEncoding{
+        self.0.tree_hash_packed_encoding()
+    }
+
+    fn tree_hash_packing_factor() -> usize {
+        <VariableList<BlsFieldElement, T::FieldElementsPerBlob>>::tree_hash_packing_factor()
+    }
+
+    fn tree_hash_root(&self) -> tree_hash::Hash256 {
+        self.0.tree_hash_root()
+    }
+}

consensus/types/src/blobs_sidecar.rs

@@ -5,6 +5,7 @@ use ssz_derive::{Decode, Encode};
 use ssz_types::VariableList;
 use tree_hash::TreeHash;
 use tree_hash_derive::TreeHash;
+use crate::kzg_proof::KzgProof;
 
 #[cfg_attr(feature = "arbitrary-fuzz", derive(arbitrary::Arbitrary))]
 #[derive(Debug, Clone, Serialize, Deserialize, Encode, Decode, TreeHash, PartialEq, Default)]
@@ -12,6 +13,7 @@ pub struct BlobsSidecar<E: EthSpec> {
     pub beacon_block_root: Hash256,
     pub beacon_block_slot: Slot,
     pub blobs: VariableList<Blob<E::FieldElementsPerBlob>, E::MaxBlobsPerBlock>,
+    pub kzg_aggregate_proof: KzgProof,
 }
 
 impl<E: EthSpec> BlobsSidecar<E> {

consensus/types/src/bls_field_element.rs

@@ -0,0 +1,59 @@
+use crate::{EthSpec, Uint256};
+use serde::{Deserialize, Serialize};
+use ssz::{Decode, DecodeError, Encode};
+use tree_hash::{PackedEncoding, TreeHash};
+
+#[derive(Default, Debug, PartialEq, Hash, Clone, Copy, Serialize, Deserialize)]
+#[serde(transparent)]
+pub struct BlsFieldElement(pub Uint256);
+
+
+impl Encode for BlsFieldElement {
+    fn is_ssz_fixed_len() -> bool {
+        <Uint256 as Encode>::is_ssz_fixed_len()
+    }
+
+    fn ssz_fixed_len() -> usize {
+        <Uint256 as Encode>::ssz_fixed_len()
+    }
+
+    fn ssz_bytes_len(&self) -> usize {
+        self.0.ssz_bytes_len()
+    }
+
+    fn ssz_append(&self, buf: &mut Vec<u8>) {
+        self.0.ssz_append(buf)
+    }
+}
+
+impl Decode for BlsFieldElement {
+    fn is_ssz_fixed_len() -> bool {
+        <Uint256 as Decode>::is_ssz_fixed_len()
+    }
+
+    fn ssz_fixed_len() -> usize {
+        <Uint256 as Decode>::ssz_fixed_len()
+    }
+
+    fn from_ssz_bytes(bytes: &[u8]) -> Result<Self, DecodeError> {
+        <Uint256 as Decode>::from_ssz_bytes(bytes).map(Self)
+    }
+}
+
+impl TreeHash for BlsFieldElement {
+    fn tree_hash_type() -> tree_hash::TreeHashType {
+        <Uint256>::tree_hash_type()
+    }
+
+    fn tree_hash_packed_encoding(&self) -> PackedEncoding{
+        self.0.tree_hash_packed_encoding()
+    }
+
+    fn tree_hash_packing_factor() -> usize {
+        <Uint256>::tree_hash_packing_factor()
+    }
+
+    fn tree_hash_root(&self) -> tree_hash::Hash256 {
+        self.0.tree_hash_root()
+    }
+}

consensus/types/src/chain_spec.rs

@@ -153,10 +153,10 @@ pub struct ChainSpec {
     pub safe_slots_to_import_optimistically: u64,
 
     /*
-     * Capella hard fork params
+     * Eip4844 hard fork params
      */
-    pub capella_fork_version: [u8; 4],
+    pub eip4844_fork_version: [u8; 4],
-    pub capella_fork_epoch: Option<Epoch>,
+    pub eip4844_fork_epoch: Option<Epoch>,
 
     /*
      * Networking
@@ -238,25 +238,26 @@ impl ChainSpec {
 
     /// Returns the name of the fork which is active at `epoch`.
     pub fn fork_name_at_epoch(&self, epoch: Epoch) -> ForkName {
-        match self.capella_fork_epoch {
+        match self.eip4844_fork_epoch {
-            Some(fork_epoch) if epoch >= fork_epoch => ForkName::Capella,
+            Some(fork_epoch) if epoch >= fork_epoch => ForkName::Eip4844,
             _ => match self.bellatrix_fork_epoch {
                 Some(fork_epoch) if epoch >= fork_epoch => ForkName::Merge,
                 _ => match self.altair_fork_epoch {
                     Some(fork_epoch) if epoch >= fork_epoch => ForkName::Altair,
                     _ => ForkName::Base,
                 },
-            },
             }
         }
 
+    }
+
     /// Returns the fork version for a named fork.
     pub fn fork_version_for_name(&self, fork_name: ForkName) -> [u8; 4] {
         match fork_name {
             ForkName::Base => self.genesis_fork_version,
             ForkName::Altair => self.altair_fork_version,
             ForkName::Merge => self.bellatrix_fork_version,
-            ForkName::Capella => self.capella_fork_version,
+            ForkName::Eip4844 => self.eip4844_fork_version,
         }
     }
 
@@ -266,7 +267,7 @@ impl ChainSpec {
             ForkName::Base => Some(Epoch::new(0)),
             ForkName::Altair => self.altair_fork_epoch,
             ForkName::Merge => self.bellatrix_fork_epoch,
-            ForkName::Capella => self.capella_fork_epoch,
+            ForkName::Eip4844 => self.eip4844_fork_epoch,
         }
     }
 
@@ -276,7 +277,7 @@ impl ChainSpec {
             BeaconState::Base(_) => self.inactivity_penalty_quotient,
             BeaconState::Altair(_) => self.inactivity_penalty_quotient_altair,
             BeaconState::Merge(_) => self.inactivity_penalty_quotient_bellatrix,
-            BeaconState::Capella(_) => self.inactivity_penalty_quotient_bellatrix,
+            BeaconState::Eip4844(_) => self.inactivity_penalty_quotient_bellatrix,
         }
     }
 
@@ -289,7 +290,7 @@ impl ChainSpec {
             BeaconState::Base(_) => self.proportional_slashing_multiplier,
             BeaconState::Altair(_) => self.proportional_slashing_multiplier_altair,
             BeaconState::Merge(_) => self.proportional_slashing_multiplier_bellatrix,
-            BeaconState::Capella(_) => self.proportional_slashing_multiplier_bellatrix,
+            BeaconState::Eip4844(_) => self.proportional_slashing_multiplier_bellatrix,
         }
     }
 
@@ -302,7 +303,7 @@ impl ChainSpec {
             BeaconState::Base(_) => self.min_slashing_penalty_quotient,
             BeaconState::Altair(_) => self.min_slashing_penalty_quotient_altair,
             BeaconState::Merge(_) => self.min_slashing_penalty_quotient_bellatrix,
-            BeaconState::Capella(_) => self.min_slashing_penalty_quotient_bellatrix,
+            BeaconState::Eip4844(_) => self.min_slashing_penalty_quotient_bellatrix,
         }
     }
 
@@ -565,7 +566,7 @@ impl ChainSpec {
             domain_sync_committee: 7,
             domain_sync_committee_selection_proof: 8,
             domain_contribution_and_proof: 9,
-            altair_fork_version: [0x01, 0x00, 0x00, 0x00],
+            altair_fork_version: [0x01, 0x00, 0x0f, 0xfd],
             altair_fork_epoch: Some(Epoch::new(74240)),
 
             /*
@@ -576,7 +577,7 @@ impl ChainSpec {
             min_slashing_penalty_quotient_bellatrix: u64::checked_pow(2, 5)
                 .expect("pow does not overflow"),
             proportional_slashing_multiplier_bellatrix: 3,
-            bellatrix_fork_version: [0x02, 0x00, 0x00, 0x00],
+            bellatrix_fork_version: [0x02, 0x00, 0x0f, 0xfd],
             bellatrix_fork_epoch: Some(Epoch::new(144896)),
             terminal_total_difficulty: Uint256::from_dec_str("58750000000000000000000")
                 .expect("terminal_total_difficulty is a valid integer"),
@@ -585,11 +586,11 @@ impl ChainSpec {
             safe_slots_to_import_optimistically: 128u64,
 
             /*
-             * Capella hardfork params
+             * Eip4844 hard fork params
              */
-            //FIXME(sean)
+            eip4844_fork_version: [0x04, 0x00, 0x00, 0xfd],
-            capella_fork_version: [0x03, 0x00, 0x00, 0x00],
+            eip4844_fork_epoch: Some(Epoch::new(u64::MAX)),
-            capella_fork_epoch: None,
+
             /*
              * Network specific
              */
@@ -645,10 +646,10 @@ impl ChainSpec {
                 // `Uint256::MAX` which is `2*256- 1`.
                 .checked_add(Uint256::one())
                 .expect("addition does not overflow"),
-            // Capella
+            // Eip4844
             //FIXME(sean)
-            capella_fork_version: [0x03, 0x00, 0x00, 0x01],
+            eip4844_fork_version: [0x03, 0x00, 0x00, 0x01],
-            capella_fork_epoch: None,
+            eip4844_fork_epoch: None,
             // Other
             network_id: 2, // lighthouse testnet network id
             deposit_chain_id: 5,
@@ -804,9 +805,8 @@ impl ChainSpec {
             terminal_block_hash_activation_epoch: Epoch::new(u64::MAX),
             safe_slots_to_import_optimistically: 128u64,
 
-            //FIXME(sean)
+            eip4844_fork_version: [0x04, 0x00, 0x00, 0x64],
-            capella_fork_version: [0x03, 0x00, 0x00, 0x64],
+            eip4844_fork_epoch: Some(Epoch::new(u64::MAX)),
-            capella_fork_epoch: None,
 
             /*
              * Network specific
@@ -883,15 +883,12 @@ pub struct Config {
     #[serde(deserialize_with = "deserialize_fork_epoch")]
     pub bellatrix_fork_epoch: Option<MaybeQuoted<Epoch>>,
 
-    // FIXME(sean): remove this default
+    #[serde(default = "default_eip4844_fork_version")]
-    #[serde(default = "default_capella_fork_version")]
     #[serde(with = "eth2_serde_utils::bytes_4_hex")]
-    capella_fork_version: [u8; 4],
+    eip4844_fork_version: [u8; 4],
-    // FIXME(sean): remove this default
-    #[serde(default = "default_capella_fork_epoch")]
     #[serde(serialize_with = "serialize_fork_epoch")]
     #[serde(deserialize_with = "deserialize_fork_epoch")]
-    pub capella_fork_epoch: Option<MaybeQuoted<Epoch>>,
+    pub eip4844_fork_epoch: Option<MaybeQuoted<Epoch>>,
 
     #[serde(with = "eth2_serde_utils::quoted_u64")]
     seconds_per_slot: u64,
@@ -930,7 +927,7 @@ fn default_bellatrix_fork_version() -> [u8; 4] {
     [0xff, 0xff, 0xff, 0xff]
 }
 
-fn default_capella_fork_version() -> [u8; 4] {
+fn default_eip4844_fork_version() -> [u8; 4] {
     // This value shouldn't be used.
     [0xff, 0xff, 0xff, 0xff]
 }
@@ -1031,9 +1028,9 @@ impl Config {
             bellatrix_fork_epoch: spec
                 .bellatrix_fork_epoch
                 .map(|epoch| MaybeQuoted { value: epoch }),
-            capella_fork_version: spec.capella_fork_version,
+            eip4844_fork_version: spec.eip4844_fork_version,
-            capella_fork_epoch: spec
+            eip4844_fork_epoch: spec
-                .capella_fork_epoch
+                .eip4844_fork_epoch
                 .map(|epoch| MaybeQuoted { value: epoch }),
 
             seconds_per_slot: spec.seconds_per_slot,
@@ -1080,8 +1077,8 @@ impl Config {
             altair_fork_epoch,
             bellatrix_fork_epoch,
             bellatrix_fork_version,
-            capella_fork_epoch,
+            eip4844_fork_epoch,
-            capella_fork_version,
+            eip4844_fork_version,
             seconds_per_slot,
             seconds_per_eth1_block,
             min_validator_withdrawability_delay,
@@ -1112,8 +1109,8 @@ impl Config {
             altair_fork_epoch: altair_fork_epoch.map(|q| q.value),
             bellatrix_fork_epoch: bellatrix_fork_epoch.map(|q| q.value),
             bellatrix_fork_version,
-            capella_fork_epoch: capella_fork_epoch.map(|q| q.value),
+            eip4844_fork_epoch: eip4844_fork_epoch.map(|q| q.value),
-            capella_fork_version,
+            eip4844_fork_version,
             seconds_per_slot,
             seconds_per_eth1_block,
             min_validator_withdrawability_delay,

consensus/types/src/eth_spec.rs

@@ -96,7 +96,7 @@ pub trait EthSpec: 'static + Default + Sync + Send + Clone + Debug + PartialEq +
     type MinGasLimit: Unsigned + Clone + Sync + Send + Debug + PartialEq;
     type MaxExtraDataBytes: Unsigned + Clone + Sync + Send + Debug + PartialEq;
     /*
-     * New in Capella
+     * New in Eip4844
      */
     type MaxBlobsPerBlock: Unsigned + Clone + Sync + Send + Debug + PartialEq;
     type FieldElementsPerBlob: Unsigned + Clone + Sync + Send + Debug + PartialEq;

consensus/types/src/execution_payload.rs

@@ -1,4 +1,4 @@
-use crate::{test_utils::TestRandom, *};
+use crate::{test_utils::TestRandom, test_utils::RngCore, *, kzg_commitment::KzgCommitment, kzg_proof::KzgProof, blob::Blob};
 use derivative::Derivative;
 use serde_derive::{Deserialize, Serialize};
 use ssz::Encode;

consensus/types/src/fork_context.rs

@@ -47,10 +47,13 @@ impl ForkContext {
             ));
         }
 
-        if spec.capella_fork_epoch.is_some() {
+        if spec.eip4844_fork_epoch.is_some() {
             fork_to_digest.push((
-                ForkName::Capella,
+                ForkName::Eip4844,
-                ChainSpec::compute_fork_digest(spec.capella_fork_version, genesis_validators_root),
+                ChainSpec::compute_fork_digest(
+                    spec.eip4844_fork_version,
+                    genesis_validators_root,
+                ),
             ));
         }
 

consensus/types/src/fork_name.rs

@@ -11,12 +11,12 @@ pub enum ForkName {
     Base,
     Altair,
     Merge,
-    Capella,
+    Eip4844
 }
 
 impl ForkName {
     pub fn list_all() -> Vec<ForkName> {
-        vec![ForkName::Base, ForkName::Altair, ForkName::Merge]
+        vec![ForkName::Base, ForkName::Altair, ForkName::Merge, ForkName::Eip4844]
     }
 
     /// Set the activation slots in the given `ChainSpec` so that the fork named by `self`
@@ -27,21 +27,25 @@ impl ForkName {
             ForkName::Base => {
                 spec.altair_fork_epoch = None;
                 spec.bellatrix_fork_epoch = None;
+                spec.eip4844_fork_epoch = None;
                 spec
             }
             ForkName::Altair => {
                 spec.altair_fork_epoch = Some(Epoch::new(0));
                 spec.bellatrix_fork_epoch = None;
+                spec.eip4844_fork_epoch = None;
                 spec
             }
             ForkName::Merge => {
                 spec.altair_fork_epoch = Some(Epoch::new(0));
                 spec.bellatrix_fork_epoch = Some(Epoch::new(0));
+                spec.eip4844_fork_epoch = None;
                 spec
             }
-            ForkName::Capella => {
+            ForkName::Eip4844 => {
+                spec.altair_fork_epoch = Some(Epoch::new(0));
                 spec.bellatrix_fork_epoch = Some(Epoch::new(0));
-                spec.capella_fork_epoch = Some(Epoch::new(0));
+                spec.eip4844_fork_epoch = Some(Epoch::new(0));
                 spec
             }
         }
@@ -55,7 +59,7 @@ impl ForkName {
             ForkName::Base => None,
             ForkName::Altair => Some(ForkName::Base),
             ForkName::Merge => Some(ForkName::Altair),
-            ForkName::Capella => Some(ForkName::Merge),
+            ForkName::Eip4844 => Some(ForkName::Merge),
         }
     }
 
@@ -66,8 +70,8 @@ impl ForkName {
         match self {
             ForkName::Base => Some(ForkName::Altair),
             ForkName::Altair => Some(ForkName::Merge),
-            ForkName::Merge => Some(ForkName::Capella),
+            ForkName::Merge => Some(ForkName::Eip4844),
-            ForkName::Capella => None,
+            ForkName::Eip4844 => None,
         }
     }
 }
@@ -109,10 +113,9 @@ macro_rules! map_fork_name_with {
                 let (value, extra_data) = $body;
                 ($t::Merge(value), extra_data)
             }
-            //TODO: don't have a beacon state variant for the new fork yet
+            ForkName::Eip4844 => {
-            ForkName::Capella => {
                 let (value, extra_data) = $body;
-                ($t::Merge(value), extra_data)
+                ($t::Eip4844(value), extra_data)
             }
         }
     };
@@ -126,6 +129,7 @@ impl FromStr for ForkName {
             "phase0" | "base" => ForkName::Base,
             "altair" => ForkName::Altair,
             "bellatrix" | "merge" => ForkName::Merge,
+            "eip4844" => ForkName::Eip4844,
             _ => return Err(format!("unknown fork name: {}", fork_name)),
         })
     }
@@ -137,7 +141,7 @@ impl Display for ForkName {
             ForkName::Base => "phase0".fmt(f),
             ForkName::Altair => "altair".fmt(f),
             ForkName::Merge => "bellatrix".fmt(f),
-            ForkName::Capella => "capella".fmt(f),
+            ForkName::Eip4844 => "eip4844".fmt(f),
         }
     }
 }

consensus/types/src/kzg_commitment.rs

@@ -3,18 +3,18 @@ use crate::*;
 use derivative::Derivative;
 use serde_derive::{Deserialize, Serialize};
 use ssz::{Decode, DecodeError, Encode};
-use tree_hash::TreeHash;
+use tree_hash::{PackedEncoding, TreeHash};
 
 //TODO: is there a way around this newtype
 #[derive(Derivative, Debug, Clone, Serialize, Deserialize)]
 #[derivative(PartialEq, Eq, Hash)]
-pub struct KZGCommitment(#[serde(with = "BigArray")] [u8; 48]);
+pub struct KzgCommitment(#[serde(with = "BigArray")] [u8; 48]);
-impl TreeHash for KZGCommitment {
+impl TreeHash for KzgCommitment {
     fn tree_hash_type() -> tree_hash::TreeHashType {
         <[u8; 48] as TreeHash>::tree_hash_type()
     }
 
-    fn tree_hash_packed_encoding(&self) -> Vec<u8> {
+    fn tree_hash_packed_encoding(&self) -> PackedEncoding{
         self.0.tree_hash_packed_encoding()
     }
 
@@ -27,23 +27,23 @@ impl TreeHash for KZGCommitment {
     }
 }
 
-impl TestRandom for KZGCommitment {
+impl TestRandom for KzgCommitment {
     fn random_for_test(rng: &mut impl rand::RngCore) -> Self {
-        KZGCommitment(<[u8; 48] as TestRandom>::random_for_test(rng))
+        KzgCommitment(<[u8; 48] as TestRandom>::random_for_test(rng))
     }
 }
 
-impl Decode for KZGCommitment {
+impl Decode for KzgCommitment {
     fn is_ssz_fixed_len() -> bool {
         <[u8; 48] as Decode>::is_ssz_fixed_len()
     }
 
     fn from_ssz_bytes(bytes: &[u8]) -> Result<Self, DecodeError> {
-        <[u8; 48] as Decode>::from_ssz_bytes(bytes).map(KZGCommitment)
+        <[u8; 48] as Decode>::from_ssz_bytes(bytes).map(KzgCommitment)
     }
 }
 
-impl Encode for KZGCommitment {
+impl Encode for KzgCommitment {
     fn is_ssz_fixed_len() -> bool {
         <[u8; 48] as Encode>::is_ssz_fixed_len()
     }

consensus/types/src/kzg_proof.rs

@@ -0,0 +1,127 @@
+use std::fmt;
+use serde::{Deserialize, Deserializer, Serialize, Serializer};
+use ssz::{Decode, DecodeError, Encode};
+use tree_hash::{PackedEncoding, TreeHash};
+use crate::test_utils::{RngCore, TestRandom};
+
+const KZG_PROOF_BYTES_LEN: usize = 48;
+
+#[derive(Debug, PartialEq, Hash, Clone, Copy, Serialize, Deserialize)]
+#[serde(transparent)]
+pub struct KzgProof(#[serde(with = "serde_kzg_proof")] pub [u8; KZG_PROOF_BYTES_LEN]);
+
+impl fmt::Display for KzgProof {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "{}", eth2_serde_utils::hex::encode(&self.0))
+    }
+}
+
+impl Default for KzgProof {
+    fn default() -> Self {
+        KzgProof([0; 48])
+    }
+}
+
+impl From<[u8; KZG_PROOF_BYTES_LEN]> for KzgProof {
+    fn from(bytes: [u8; KZG_PROOF_BYTES_LEN]) -> Self {
+        Self(bytes)
+    }
+}
+
+impl Into<[u8; KZG_PROOF_BYTES_LEN]> for KzgProof {
+    fn into(self) -> [u8; KZG_PROOF_BYTES_LEN] {
+        self.0
+    }
+}
+
+pub mod serde_kzg_proof {
+    use serde::de::Error;
+    use super::*;
+
+    pub fn serialize<S>(bytes: &[u8; KZG_PROOF_BYTES_LEN], serializer: S) -> Result<S::Ok, S::Error>
+        where
+            S: Serializer,
+    {
+        serializer.serialize_str(&eth2_serde_utils::hex::encode(bytes))
+    }
+
+    pub fn deserialize<'de, D>(deserializer: D) -> Result<[u8; KZG_PROOF_BYTES_LEN], D::Error>
+        where
+            D: Deserializer<'de>,
+    {
+        let s: String = Deserialize::deserialize(deserializer)?;
+
+        let bytes = eth2_serde_utils::hex::decode(&s).map_err(D::Error::custom)?;
+
+        if bytes.len() != KZG_PROOF_BYTES_LEN {
+            return Err(D::Error::custom(format!(
+                "incorrect byte length {}, expected {}",
+                bytes.len(),
+                KZG_PROOF_BYTES_LEN
+            )));
+        }
+
+        let mut array = [0; KZG_PROOF_BYTES_LEN];
+        array[..].copy_from_slice(&bytes);
+
+        Ok(array)
+    }
+}
+
+impl Encode for KzgProof {
+    fn is_ssz_fixed_len() -> bool {
+        <[u8; KZG_PROOF_BYTES_LEN] as Encode>::is_ssz_fixed_len()
+    }
+
+    fn ssz_fixed_len() -> usize {
+        <[u8; KZG_PROOF_BYTES_LEN] as Encode>::ssz_fixed_len()
+    }
+
+    fn ssz_bytes_len(&self) -> usize {
+        self.0.ssz_bytes_len()
+    }
+
+    fn ssz_append(&self, buf: &mut Vec<u8>) {
+        self.0.ssz_append(buf)
+    }
+}
+
+impl Decode for KzgProof {
+    fn is_ssz_fixed_len() -> bool {
+        <[u8; KZG_PROOF_BYTES_LEN] as Decode>::is_ssz_fixed_len()
+    }
+
+    fn ssz_fixed_len() -> usize {
+        <[u8; KZG_PROOF_BYTES_LEN] as Decode>::ssz_fixed_len()
+    }
+
+    fn from_ssz_bytes(bytes: &[u8]) -> Result<Self, DecodeError> {
+        <[u8; KZG_PROOF_BYTES_LEN]>::from_ssz_bytes(bytes).map(Self)
+    }
+}
+
+impl TreeHash for KzgProof {
+    fn tree_hash_type() -> tree_hash::TreeHashType {
+        <[u8; KZG_PROOF_BYTES_LEN]>::tree_hash_type()
+    }
+
+    fn tree_hash_packed_encoding(&self) -> PackedEncoding {
+        self.0.tree_hash_packed_encoding()
+    }
+
+    fn tree_hash_packing_factor() -> usize {
+        <[u8; KZG_PROOF_BYTES_LEN]>::tree_hash_packing_factor()
+    }
+
+    fn tree_hash_root(&self) -> tree_hash::Hash256 {
+        self.0.tree_hash_root()
+    }
+}
+
+impl TestRandom for KzgProof {
+    fn random_for_test(rng: &mut impl RngCore) -> Self {
+        let mut bytes = [0; KZG_PROOF_BYTES_LEN];
+        rng.fill_bytes(&mut bytes);
+        Self(bytes)
+    }
+}

consensus/types/src/lib.rs

@@ -86,14 +86,16 @@ pub mod sync_subnet_id;
 mod tree_hash_impls;
 pub mod validator_registration_data;
 
-mod blobs_sidecar;
-mod kzg_commitment;
-mod signed_blobs_sidecar;
 pub mod slot_data;
 #[cfg(feature = "sqlite")]
 pub mod sqlite;
 
-pub use kzg_commitment::KZGCommitment;
+pub mod kzg_commitment;
+pub mod kzg_proof;
+pub mod bls_field_element;
+pub mod blob;
+pub mod signed_blobs_sidecar;
+pub mod blobs_sidecar;
 
 use ethereum_types::{H160, H256};
 
@@ -103,12 +105,12 @@ pub use crate::attestation_data::AttestationData;
 pub use crate::attestation_duty::AttestationDuty;
 pub use crate::attester_slashing::AttesterSlashing;
 pub use crate::beacon_block::{
-    BeaconBlock, BeaconBlockAltair, BeaconBlockBase, BeaconBlockCapella, BeaconBlockMerge, BeaconBlockRef,
+    BeaconBlock, BeaconBlockAltair, BeaconBlockBase, BeaconBlockMerge, BeaconBlockRef,
-    BeaconBlockRefMut, BlindedBeaconBlock,
+    BeaconBlockRefMut, BeaconBlockEip4844
 };
 pub use crate::beacon_block_body::{
-    BeaconBlockBody, BeaconBlockBodyAltair, BeaconBlockBodyBase, BeaconBlockBodyCapella,
+    BeaconBlockBody, BeaconBlockBodyAltair, BeaconBlockBodyBase, BeaconBlockBodyMerge,
-    BeaconBlockBodyMerge, BeaconBlockBodyRef, BeaconBlockBodyRefMut,
+    BeaconBlockBodyRef, BeaconBlockBodyRefMut, BeaconBlockBodyEip4844
 };
 pub use crate::beacon_block_header::BeaconBlockHeader;
 pub use crate::beacon_committee::{BeaconCommittee, OwnedBeaconCommittee};
@@ -150,7 +152,7 @@ pub use crate::shuffling_id::AttestationShufflingId;
 pub use crate::signed_aggregate_and_proof::SignedAggregateAndProof;
 pub use crate::signed_beacon_block::{
     SignedBeaconBlock, SignedBeaconBlockAltair, SignedBeaconBlockBase, SignedBeaconBlockHash,
-    SignedBeaconBlockMerge, SignedBlindedBeaconBlock,SignedBeaconBlockCapella
+    SignedBeaconBlockMerge, SignedBlindedBeaconBlock, SignedBeaconBlockEip4844,
 };
 pub use crate::signed_beacon_block_header::SignedBeaconBlockHeader;
 pub use crate::signed_contribution_and_proof::SignedContributionAndProof;

consensus/types/src/payload.rs

@@ -8,6 +8,7 @@ use std::fmt::Debug;
 use std::hash::Hash;
 use test_random_derive::TestRandom;
 use tree_hash::{PackedEncoding, TreeHash};
+use core::hash::Hasher;
 
 #[derive(Debug)]
 pub enum BlockType {

consensus/types/src/signed_beacon_block.rs

@@ -38,7 +38,7 @@ impl From<SignedBeaconBlockHash> for Hash256 {
 
 /// A `BeaconBlock` and a signature from its proposer.
 #[superstruct(
-    variants(Base, Altair, Merge, Capella),
+    variants(Base, Altair, Merge, Eip4844),
     variant_attributes(
         derive(
             Debug,
@@ -72,8 +72,8 @@ pub struct SignedBeaconBlock<E: EthSpec, Payload: ExecPayload<E> = FullPayload<E
     pub message: BeaconBlockAltair<E, Payload>,
     #[superstruct(only(Merge), partial_getter(rename = "message_merge"))]
     pub message: BeaconBlockMerge<E, Payload>,
-    #[superstruct(only(Capella), partial_getter(rename = "message_capella"))]
+    #[superstruct(only(Eip4844), partial_getter(rename = "message_eip4844"))]
-    pub message: BeaconBlockCapella<E, Payload>,
+    pub message: BeaconBlockEip4844<E, Payload>,
     pub signature: Signature,
 }
 
@@ -131,8 +131,8 @@ impl<E: EthSpec, Payload: ExecPayload<E>> SignedBeaconBlock<E, Payload> {
             BeaconBlock::Merge(message) => {
                 SignedBeaconBlock::Merge(SignedBeaconBlockMerge { message, signature })
             }
-            BeaconBlock::Capella(message) => {
+            BeaconBlock::Eip4844(message) => {
-                SignedBeaconBlock::Capella(SignedBeaconBlockCapella { message, signature })
+                SignedBeaconBlock::Eip4844(SignedBeaconBlockEip4844 { message, signature })
             }
         }
     }
@@ -312,6 +312,60 @@ impl<E: EthSpec> SignedBeaconBlockMerge<E, BlindedPayload<E>> {
     }
 }
 
+impl<E: EthSpec> SignedBeaconBlockEip4844<E, BlindedPayload<E>> {
+    pub fn into_full_block(
+        self,
+        execution_payload: ExecutionPayload<E>,
+    ) -> SignedBeaconBlockEip4844<E, FullPayload<E>> {
+        let SignedBeaconBlockEip4844 {
+            message:
+            BeaconBlockEip4844 {
+                slot,
+                proposer_index,
+                parent_root,
+                state_root,
+                body:
+                BeaconBlockBodyEip4844 {
+                    randao_reveal,
+                    eth1_data,
+                    graffiti,
+                    proposer_slashings,
+                    attester_slashings,
+                    attestations,
+                    deposits,
+                    voluntary_exits,
+                    sync_aggregate,
+                    execution_payload: BlindedPayload { .. },
+                    blob_kzg_commitments,
+                },
+            },
+            signature,
+        } = self;
+        SignedBeaconBlockEip4844 {
+            message: BeaconBlockEip4844 {
+                slot,
+                proposer_index,
+                parent_root,
+                state_root,
+                body: BeaconBlockBodyEip4844 {
+                    randao_reveal,
+                    eth1_data,
+                    graffiti,
+                    proposer_slashings,
+                    attester_slashings,
+                    attestations,
+                    deposits,
+                    voluntary_exits,
+                    sync_aggregate,
+                    execution_payload: FullPayload { execution_payload },
+                    blob_kzg_commitments,
+                },
+            },
+            signature,
+        }
+    }
+}
+
 impl<E: EthSpec> SignedBeaconBlock<E, BlindedPayload<E>> {
     pub fn try_into_full_block(
         self,
@@ -323,6 +377,9 @@ impl<E: EthSpec> SignedBeaconBlock<E, BlindedPayload<E>> {
             SignedBeaconBlock::Merge(block) => {
                 SignedBeaconBlock::Merge(block.into_full_block(execution_payload?))
             }
+            SignedBeaconBlock::Eip4844(block) => {
+                SignedBeaconBlock::Eip4844(block.into_full_block(execution_payload?))
+            }
         };
         Some(full_block)
     }

testing/ef_tests/check_all_files_accessed.py

@@ -41,8 +41,8 @@ excluded_paths = [
     "tests/.*/.*/ssz_static/LightClientFinalityUpdate",
     # Merkle-proof tests for light clients
     "tests/.*/.*/merkle/single_proof",
-    # Capella tests are disabled for now.
+    # Eip4844 tests are disabled for now.
-    "tests/.*/capella",
+    "tests/.*/eip4844",
     # One of the EF researchers likes to pack the tarballs on a Mac
     ".*\.DS_Store.*",
     # More Mac weirdness.

testing/ef_tests/src/cases/common.rs

@@ -78,6 +78,6 @@ pub fn previous_fork(fork_name: ForkName) -> ForkName {
         ForkName::Base => ForkName::Base,
         ForkName::Altair => ForkName::Base,
         ForkName::Merge => ForkName::Altair, // TODO: Check this when tests are released..
-        ForkName::Capella => ForkName::Merge, // TODO: Check this when tests are released..
+        ForkName::Eip4844 => ForkName::Merge, // TODO: Check this when tests are released..
     }
 }

testing/ef_tests/src/cases/epoch_processing.rs

@@ -97,7 +97,7 @@ impl<E: EthSpec> EpochTransition<E> for JustificationAndFinalization {
                 justification_and_finalization_state.apply_changes_to_state(state);
                 Ok(())
             }
-            BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Capella(_) => {
+            BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Eip4844(_) => {
                 let justification_and_finalization_state =
                     altair::process_justification_and_finalization(
                         state,
@@ -118,7 +118,7 @@ impl<E: EthSpec> EpochTransition<E> for RewardsAndPenalties {
                 validator_statuses.process_attestations(state)?;
                 base::process_rewards_and_penalties(state, &mut validator_statuses, spec)
             }
-            BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Capella(_) => {
+            BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Eip4844(_) => {
                 altair::process_rewards_and_penalties(
                     state,
                     &altair::ParticipationCache::new(state, spec).unwrap(),
@@ -147,7 +147,7 @@ impl<E: EthSpec> EpochTransition<E> for Slashings {
                     spec,
                 )?;
             }
-            BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Capella(_) => {
+            BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Eip4844(_) => {
                 process_slashings(
                     state,
                     altair::ParticipationCache::new(state, spec)
@@ -205,7 +205,7 @@ impl<E: EthSpec> EpochTransition<E> for SyncCommitteeUpdates {
     fn run(state: &mut BeaconState<E>, spec: &ChainSpec) -> Result<(), EpochProcessingError> {
         match state {
             BeaconState::Base(_) => Ok(()),
-            BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Capella(_) => {
+            BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Eip4844(_) => {
                 altair::process_sync_committee_updates(state, spec)
             }
         }
@@ -216,7 +216,7 @@ impl<E: EthSpec> EpochTransition<E> for InactivityUpdates {
     fn run(state: &mut BeaconState<E>, spec: &ChainSpec) -> Result<(), EpochProcessingError> {
         match state {
             BeaconState::Base(_) => Ok(()),
-            BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Capella(_) => {
+            BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Eip4844(_) => {
                 altair::process_inactivity_updates(
                     state,
                     &altair::ParticipationCache::new(state, spec).unwrap(),
@@ -231,7 +231,7 @@ impl<E: EthSpec> EpochTransition<E> for ParticipationFlagUpdates {
     fn run(state: &mut BeaconState<E>, _: &ChainSpec) -> Result<(), EpochProcessingError> {
         match state {
             BeaconState::Base(_) => Ok(()),
-            BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Capella(_) => {
+            BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Eip4844(_) => {
                 altair::process_participation_flag_updates(state)
             }
         }
@@ -280,7 +280,7 @@ impl<E: EthSpec, T: EpochTransition<E>> Case for EpochProcessing<E, T> {
             }
             // No phase0 tests for Altair and later.
             ForkName::Altair | ForkName::Merge => T::name() != "participation_record_updates",
-            ForkName::Capella => false,                    // TODO: revisit when tests are out
+            ForkName::Eip4844 => false,                    // TODO: revisit when tests are out
         }
     }
 

testing/ef_tests/src/cases/fork.rs

@@ -61,7 +61,7 @@ impl<E: EthSpec> Case for ForkTest<E> {
             ForkName::Base => panic!("phase0 not supported"),
             ForkName::Altair => upgrade_to_altair(&mut result_state, spec).map(|_| result_state),
             ForkName::Merge => upgrade_to_bellatrix(&mut result_state, spec).map(|_| result_state),
-            ForkName::Capella => panic!("capella not supported"),
+            ForkName::Eip4844 => panic!("eip4844 not supported"),
         };
 
         compare_beacon_state_results_without_caches(&mut result, &mut expected)

testing/ef_tests/src/cases/operations.rs

@@ -81,7 +81,7 @@ impl<E: EthSpec> Operation<E> for Attestation<E> {
             BeaconState::Base(_) => {
                 base::process_attestations(state, &[self.clone()], VerifySignatures::True, spec)
             }
-            BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Capella(_) => {
+            BeaconState::Altair(_) | BeaconState::Merge(_) | BeaconState::Eip4844(_) => {
                 altair::process_attestation(
                     state,
                     self,

testing/ef_tests/src/cases/transition.rs

@@ -42,9 +42,9 @@ impl<E: EthSpec> LoadCase for TransitionTest<E> {
                 spec.altair_fork_epoch = Some(Epoch::new(0));
                 spec.bellatrix_fork_epoch = Some(metadata.fork_epoch);
             }
-            ForkName::Capella => {
+            ForkName::Eip4844 => {
                 spec.bellatrix_fork_epoch = Some(Epoch::new(0));
-                spec.capella_fork_epoch = Some(metadata.fork_epoch);
+                spec.eip4844_fork_epoch = Some(metadata.fork_epoch);
             }
         }
 

validator_client/src/signing_method/web3signer.rs

@@ -26,6 +26,7 @@ pub enum ForkName {
     Phase0,
     Altair,
     Bellatrix,
+    Eip4844,
 }
 
 #[derive(Debug, PartialEq, Serialize)]
@@ -90,8 +91,8 @@ impl<'a, T: EthSpec, Payload: ExecPayload<T>> Web3SignerObject<'a, T, Payload> {
                 block: None,
                 block_header: Some(block.block_header()),
             }),
-            BeaconBlock::Capella(_) => Ok(Web3SignerObject::BeaconBlock {
+            BeaconBlock::Eip4844(_) => Ok(Web3SignerObject::BeaconBlock {
-                version: ForkName::Capella,
+                version: ForkName::Eip4844,
                 block: None,
                 block_header: Some(block.block_header()),
             }),