diff --git a/chain/actors/actor_paych.go b/chain/actors/actor_paych.go
index 30c8565f8..6d3e74039 100644
--- a/chain/actors/actor_paych.go
+++ b/chain/actors/actor_paych.go
@@ -97,6 +97,11 @@ func hash(b []byte) []byte {
 	panic("blake 2b hash pls")
 }
 
+type PaymentVerifyParams struct {
+	Extra []byte
+	Proof []byte
+}
+
 func (pca PaymentChannelActor) UpdateChannelState(act *types.Actor, vmctx types.VMContext, params *PCAUpdateChannelStateParams) ([]byte, ActorError) {
 	var self PaymentChannelActorState
 	oldstate := vmctx.Storage().GetHead()
diff --git a/chain/actors/cbor_gen.go b/chain/actors/cbor_gen.go
index d41cd3749..7a2459272 100644
--- a/chain/actors/cbor_gen.go
+++ b/chain/actors/cbor_gen.go
@@ -198,7 +198,7 @@ func (t *StorageMinerActorState) MarshalCBOR(w io.Writer) error {
 		_, err := w.Write(cbg.CborNull)
 		return err
 	}
-	if _, err := w.Write([]byte{139}); err != nil {
+	if _, err := w.Write([]byte{138}); err != nil {
 		return err
 	}
 
@@ -268,6 +268,10 @@ func (t *StorageMinerActorState) MarshalCBOR(w io.Writer) error {
 		return err
 	}
 
+	// t.t.SlashedAt (uint64) (uint64)
+	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajUnsignedInt, uint64(t.SlashedAt))); err != nil {
+		return err
+	}
 
 	// t.t.ProvingPeriodEnd (uint64) (uint64)
 	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajUnsignedInt, uint64(t.ProvingPeriodEnd))); err != nil {
@@ -287,7 +291,7 @@ func (t *StorageMinerActorState) UnmarshalCBOR(r io.Reader) error {
 		return fmt.Errorf("cbor input should be of type array")
 	}
 
-	if extra != 11 {
+	if extra != 10 {
 		return fmt.Errorf("cbor input had wrong number of fields")
 	}
 
@@ -416,9 +420,16 @@ func (t *StorageMinerActorState) UnmarshalCBOR(r io.Reader) error {
 		}
 
 	}
-	// t.t.SlashedAt (types.BigInt) (struct)
-
+	// t.t.SlashedAt (uint64) (uint64)
 
+	maj, extra, err = cbg.CborReadHeader(br)
+	if err != nil {
+		return err
+	}
+	if maj != cbg.MajUnsignedInt {
+		return fmt.Errorf("wrong type for uint64 field")
+	}
+	t.SlashedAt = uint64(extra)
 	// t.t.ProvingPeriodEnd (uint64) (uint64)
 
 	maj, extra, err = cbg.CborReadHeader(br)
@@ -862,6 +873,85 @@ func (t *SubmitPoStParams) UnmarshalCBOR(r io.Reader) error {
 	return nil
 }
 
+func (t *PaymentVerifyParams) MarshalCBOR(w io.Writer) error {
+	if t == nil {
+		_, err := w.Write(cbg.CborNull)
+		return err
+	}
+	if _, err := w.Write([]byte{130}); err != nil {
+		return err
+	}
+
+	// t.t.Extra ([]uint8) (slice)
+	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajByteString, uint64(len(t.Extra)))); err != nil {
+		return err
+	}
+	if _, err := w.Write(t.Extra); err != nil {
+		return err
+	}
+
+	// t.t.Proof ([]uint8) (slice)
+	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajByteString, uint64(len(t.Proof)))); err != nil {
+		return err
+	}
+	if _, err := w.Write(t.Proof); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (t *PaymentVerifyParams) UnmarshalCBOR(r io.Reader) error {
+	br := cbg.GetPeeker(r)
+
+	maj, extra, err := cbg.CborReadHeader(br)
+	if err != nil {
+		return err
+	}
+	if maj != cbg.MajArray {
+		return fmt.Errorf("cbor input should be of type array")
+	}
+
+	if extra != 2 {
+		return fmt.Errorf("cbor input had wrong number of fields")
+	}
+
+	// t.t.Extra ([]uint8) (slice)
+
+	maj, extra, err = cbg.CborReadHeader(br)
+	if err != nil {
+		return err
+	}
+	if extra > 8192 {
+		return fmt.Errorf("t.Extra: array too large (%d)", extra)
+	}
+
+	if maj != cbg.MajByteString {
+		return fmt.Errorf("expected byte array")
+	}
+	t.Extra = make([]byte, extra)
+	if _, err := io.ReadFull(br, t.Extra); err != nil {
+		return err
+	}
+	// t.t.Proof ([]uint8) (slice)
+
+	maj, extra, err = cbg.CborReadHeader(br)
+	if err != nil {
+		return err
+	}
+	if extra > 8192 {
+		return fmt.Errorf("t.Proof: array too large (%d)", extra)
+	}
+
+	if maj != cbg.MajByteString {
+		return fmt.Errorf("expected byte array")
+	}
+	t.Proof = make([]byte, extra)
+	if _, err := io.ReadFull(br, t.Proof); err != nil {
+		return err
+	}
+	return nil
+}
+
 func (t *UpdatePeerIDParams) MarshalCBOR(w io.Writer) error {
 	if t == nil {
 		_, err := w.Write(cbg.CborNull)
@@ -2305,7 +2395,7 @@ func (t *StoragePowerState) MarshalCBOR(w io.Writer) error {
 		_, err := w.Write(cbg.CborNull)
 		return err
 	}
-	if _, err := w.Write([]byte{131}); err != nil {
+	if _, err := w.Write([]byte{132}); err != nil {
 		return err
 	}
 
@@ -2315,6 +2405,12 @@ func (t *StoragePowerState) MarshalCBOR(w io.Writer) error {
 		return xerrors.Errorf("failed to write cid field t.Miners: %w", err)
 	}
 
+	// t.t.ProvingBuckets (cid.Cid) (struct)
+
+	if err := cbg.WriteCid(w, t.ProvingBuckets); err != nil {
+		return xerrors.Errorf("failed to write cid field t.ProvingBuckets: %w", err)
+	}
+
 	// t.t.MinerCount (uint64) (uint64)
 	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajUnsignedInt, uint64(t.MinerCount))); err != nil {
 		return err
@@ -2338,7 +2434,7 @@ func (t *StoragePowerState) UnmarshalCBOR(r io.Reader) error {
 		return fmt.Errorf("cbor input should be of type array")
 	}
 
-	if extra != 3 {
+	if extra != 4 {
 		return fmt.Errorf("cbor input had wrong number of fields")
 	}
 
@@ -2353,6 +2449,18 @@ func (t *StoragePowerState) UnmarshalCBOR(r io.Reader) error {
 
 		t.Miners = c
 
+	}
+	// t.t.ProvingBuckets (cid.Cid) (struct)
+
+	{
+
+		c, err := cbg.ReadCid(br)
+		if err != nil {
+			return xerrors.Errorf("failed to read cid field t.ProvingBuckets: %w", err)
+		}
+
+		t.ProvingBuckets = c
+
 	}
 	// t.t.MinerCount (uint64) (uint64)
 
@@ -2557,7 +2665,7 @@ func (t *UpdateStorageParams) MarshalCBOR(w io.Writer) error {
 		_, err := w.Write(cbg.CborNull)
 		return err
 	}
-	if _, err := w.Write([]byte{129}); err != nil {
+	if _, err := w.Write([]byte{131}); err != nil {
 		return err
 	}
 
@@ -2565,6 +2673,16 @@ func (t *UpdateStorageParams) MarshalCBOR(w io.Writer) error {
 	if err := t.Delta.MarshalCBOR(w); err != nil {
 		return err
 	}
+
+	// t.t.NextProvingPeriodEnd (uint64) (uint64)
+	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajUnsignedInt, uint64(t.NextProvingPeriodEnd))); err != nil {
+		return err
+	}
+
+	// t.t.PreviousProvingPeriodEnd (uint64) (uint64)
+	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajUnsignedInt, uint64(t.PreviousProvingPeriodEnd))); err != nil {
+		return err
+	}
 	return nil
 }
 
@@ -2579,7 +2697,7 @@ func (t *UpdateStorageParams) UnmarshalCBOR(r io.Reader) error {
 		return fmt.Errorf("cbor input should be of type array")
 	}
 
-	if extra != 1 {
+	if extra != 3 {
 		return fmt.Errorf("cbor input had wrong number of fields")
 	}
 
@@ -2592,6 +2710,26 @@ func (t *UpdateStorageParams) UnmarshalCBOR(r io.Reader) error {
 		}
 
 	}
+	// t.t.NextProvingPeriodEnd (uint64) (uint64)
+
+	maj, extra, err = cbg.CborReadHeader(br)
+	if err != nil {
+		return err
+	}
+	if maj != cbg.MajUnsignedInt {
+		return fmt.Errorf("wrong type for uint64 field")
+	}
+	t.NextProvingPeriodEnd = uint64(extra)
+	// t.t.PreviousProvingPeriodEnd (uint64) (uint64)
+
+	maj, extra, err = cbg.CborReadHeader(br)
+	if err != nil {
+		return err
+	}
+	if maj != cbg.MajUnsignedInt {
+		return fmt.Errorf("wrong type for uint64 field")
+	}
+	t.PreviousProvingPeriodEnd = uint64(extra)
 	return nil
 }
 
diff --git a/chain/blocksync/cbor_gen.go b/chain/blocksync/cbor_gen.go
index 4af61a490..579b3f857 100644
--- a/chain/blocksync/cbor_gen.go
+++ b/chain/blocksync/cbor_gen.go
@@ -5,7 +5,7 @@ import (
 	"io"
 
 	"github.com/filecoin-project/lotus/chain/types"
-	"github.com/ipfs/go-cid"
+	cid "github.com/ipfs/go-cid"
 	cbg "github.com/whyrusleeping/cbor-gen"
 	xerrors "golang.org/x/xerrors"
 )
diff --git a/chain/deals/cbor_gen.go b/chain/deals/cbor_gen.go
index ba11e69ee..1b10f1772 100644
--- a/chain/deals/cbor_gen.go
+++ b/chain/deals/cbor_gen.go
@@ -861,7 +861,7 @@ func (t *StorageDataTransferVoucher) MarshalCBOR(w io.Writer) error {
 		return err
 	}
 
-	// t.t.Proposal (cid.Cid)
+	// t.t.Proposal (cid.Cid) (struct)
 
 	if err := cbg.WriteCid(w, t.Proposal); err != nil {
 		return xerrors.Errorf("failed to write cid field t.Proposal: %w", err)
@@ -885,7 +885,7 @@ func (t *StorageDataTransferVoucher) UnmarshalCBOR(r io.Reader) error {
 		return fmt.Errorf("cbor input had wrong number of fields")
 	}
 
-	// t.t.Proposal (cid.Cid)
+	// t.t.Proposal (cid.Cid) (struct)
 
 	{
 
diff --git a/chain/types/cbor_gen.go b/chain/types/cbor_gen.go
index 1ebe94a13..fa3cddaf4 100644
--- a/chain/types/cbor_gen.go
+++ b/chain/types/cbor_gen.go
@@ -5,7 +5,7 @@ import (
 	"io"
 	"math"
 
-	"github.com/ipfs/go-cid"
+	cid "github.com/ipfs/go-cid"
 	cbg "github.com/whyrusleeping/cbor-gen"
 	xerrors "golang.org/x/xerrors"
 )