diff --git a/packages/tendermint-rpc/src/adaptors/v0-33/requests.ts b/packages/tendermint-rpc/src/adaptors/v0-33/requests.ts
index 2bd8bc66..c5d8a7ac 100644
--- a/packages/tendermint-rpc/src/adaptors/v0-33/requests.ts
+++ b/packages/tendermint-rpc/src/adaptors/v0-33/requests.ts
@@ -1,8 +1,8 @@
 /* eslint-disable @typescript-eslint/naming-convention */
-import { toHex } from "@cosmjs/encoding";
+import { toBase64, toHex } from "@cosmjs/encoding";
 import { JsonRpcRequest } from "@cosmjs/json-rpc";
 
-import { assertNotEmpty, Base64, Integer, may } from "../../encodings";
+import { assertNotEmpty, Integer, may } from "../../encodings";
 import { createJsonRpcRequest } from "../../jsonrpc";
 import * as requests from "../../requests";
 
@@ -53,7 +53,7 @@ interface RpcBroadcastTxParams {
 }
 function encodeBroadcastTxParams(params: requests.BroadcastTxParams): RpcBroadcastTxParams {
   return {
-    tx: Base64.encode(assertNotEmpty(params.tx)),
+    tx: toBase64(assertNotEmpty(params.tx)),
   };
 }
 
@@ -64,7 +64,7 @@ interface RpcTxParams {
 }
 function encodeTxParams(params: requests.TxParams): RpcTxParams {
   return {
-    hash: Base64.encode(assertNotEmpty(params.hash)),
+    hash: toBase64(assertNotEmpty(params.hash)),
     prove: params.prove,
   };
 }
diff --git a/packages/tendermint-rpc/src/adaptors/v0-33/responses.ts b/packages/tendermint-rpc/src/adaptors/v0-33/responses.ts
index 2c613843..ac05f509 100644
--- a/packages/tendermint-rpc/src/adaptors/v0-33/responses.ts
+++ b/packages/tendermint-rpc/src/adaptors/v0-33/responses.ts
@@ -1,5 +1,5 @@
 /* eslint-disable @typescript-eslint/naming-convention */
-import { fromHex } from "@cosmjs/encoding";
+import { fromBase64, fromHex } from "@cosmjs/encoding";
 import { JsonRpcSuccessResponse } from "@cosmjs/json-rpc";
 
 import {
@@ -10,10 +10,8 @@ import {
   assertObject,
   assertSet,
   assertString,
-  Base64,
   DateTime,
   dictionaryToStringMap,
-  Hex,
   Integer,
   may,
   optional,
@@ -38,7 +36,7 @@ function decodeAbciInfo(data: RpcAbciInfoResponse): responses.AbciInfoResponse {
   return {
     data: data.data,
     lastBlockHeight: may(Integer.parse, data.last_block_height),
-    lastBlockAppHash: may(Base64.decode, data.last_block_app_hash),
+    lastBlockAppHash: may(fromBase64, data.last_block_app_hash),
   };
 }
 
@@ -62,8 +60,8 @@ function decodeQueryProof(data: RpcQueryProof): responses.QueryProof {
   return {
     ops: data.ops.map((op) => ({
       type: op.type,
-      key: Base64.decode(op.key),
-      data: Base64.decode(op.data),
+      key: fromBase64(op.key),
+      data: fromBase64(op.data),
     })),
   };
 }
@@ -82,8 +80,8 @@ interface RpcAbciQueryResponse {
 
 function decodeAbciQuery(data: RpcAbciQueryResponse): responses.AbciQueryResponse {
   return {
-    key: Base64.decode(optional(data.key, "")),
-    value: Base64.decode(optional(data.value, "")),
+    key: fromBase64(optional(data.key, "")),
+    value: fromBase64(optional(data.value, "")),
     proof: may(decodeQueryProof, data.proof),
     height: may(Integer.parse, data.height),
     code: may(Integer.parse, data.code),
@@ -101,8 +99,8 @@ interface RpcAttribute {
 
 function decodeAttribute(attribute: RpcAttribute): responses.Attribute {
   return {
-    key: Base64.decode(assertNotEmpty(attribute.key)),
-    value: Base64.decode(assertNotEmpty(attribute.value)),
+    key: fromBase64(assertNotEmpty(attribute.key)),
+    value: fromBase64(assertNotEmpty(attribute.value)),
   };
 }
 
@@ -136,7 +134,7 @@ interface RpcTxData {
 
 function decodeTxData(data: RpcTxData): responses.TxData {
   return {
-    data: may(Base64.decode, data.data),
+    data: may(fromBase64, data.data),
     log: data.log,
     code: Integer.parse(assertNumber(optional<number>(data.code, 0))),
     events: decodeEvents(data.events),
@@ -155,7 +153,7 @@ function decodePubkey(data: RpcPubkey): ValidatorPubkey {
     // go-amino special code
     return {
       algorithm: "ed25519",
-      data: Base64.decode(assertNotEmpty(data.value)),
+      data: fromBase64(assertNotEmpty(data.value)),
     };
   }
   throw new Error(`unknown pubkey type: ${data.type}`);
@@ -173,7 +171,7 @@ function decodeValidatorUpdate(data: RpcValidatorUpdate): responses.Validator {
   return {
     pubkey: decodePubkey(assertObject(data.pub_key)),
     votingPower: Integer.parse(assertNotEmpty(data.voting_power)),
-    address: Hex.decode(assertNotEmpty(data.address)),
+    address: fromHex(assertNotEmpty(data.address)),
   };
 }
 
@@ -410,7 +408,7 @@ type RpcSignature = {
 function decodeSignature(data: RpcSignature): ValidatorSignature {
   return {
     algorithm: "ed25519",
-    data: Base64.decode(assertNotEmpty(data.signature)),
+    data: fromBase64(assertNotEmpty(data.signature)),
   };
 }
 
@@ -603,13 +601,13 @@ interface RpcTxProof {
 
 function decodeTxProof(data: RpcTxProof): responses.TxProof {
   return {
-    data: Base64.decode(assertNotEmpty(data.data)),
+    data: fromBase64(assertNotEmpty(data.data)),
     rootHash: fromHex(assertNotEmpty(data.root_hash)),
     proof: {
       total: Integer.parse(assertNotEmpty(data.proof.total)),
       index: Integer.parse(assertNotEmpty(data.proof.index)),
-      leafHash: Base64.decode(assertNotEmpty(data.proof.leaf_hash)),
-      aunts: assertArray(data.proof.aunts).map(Base64.decode),
+      leafHash: fromBase64(assertNotEmpty(data.proof.leaf_hash)),
+      aunts: assertArray(data.proof.aunts).map(fromBase64),
     },
   };
 }
@@ -627,7 +625,7 @@ interface RpcTxResponse {
 
 function decodeTxResponse(data: RpcTxResponse): responses.TxResponse {
   return {
-    tx: Base64.decode(assertNotEmpty(data.tx)) as TxBytes,
+    tx: fromBase64(assertNotEmpty(data.tx)) as TxBytes,
     result: decodeTxData(assertObject(data.tx_result)),
     height: Integer.parse(assertNotEmpty(data.height)),
     index: Integer.parse(assertNumber(data.index)),
@@ -658,7 +656,7 @@ interface RpcTxEvent {
 }
 
 function decodeTxEvent(data: RpcTxEvent): responses.TxEvent {
-  const tx = Base64.decode(assertNotEmpty(data.tx)) as TxBytes;
+  const tx = fromBase64(assertNotEmpty(data.tx)) as TxBytes;
   return {
     tx: tx,
     hash: hashTx(tx),
@@ -730,7 +728,7 @@ function decodeBlock(data: RpcBlock): responses.Block {
   return {
     header: decodeHeader(assertObject(data.header)),
     lastCommit: decodeCommit(assertObject(data.last_commit)),
-    txs: data.data.txs ? assertArray(data.data.txs).map(Base64.decode) : [],
+    txs: data.data.txs ? assertArray(data.data.txs).map(fromBase64) : [],
     evidence: data.evidence && may(decodeEvidences, data.evidence.evidence),
   };
 }
diff --git a/packages/tendermint-rpc/src/encodings.ts b/packages/tendermint-rpc/src/encodings.ts
index 00f86427..5a97754d 100644
--- a/packages/tendermint-rpc/src/encodings.ts
+++ b/packages/tendermint-rpc/src/encodings.ts
@@ -1,4 +1,4 @@
-import { fromBase64, fromHex, fromRfc3339, toBase64, toHex, toUtf8 } from "@cosmjs/encoding";
+import { fromRfc3339, toUtf8 } from "@cosmjs/encoding";
 import { Int53 } from "@cosmjs/math";
 
 import { BlockId, ReadonlyDateWithNanoseconds, Version } from "./responses";
@@ -155,16 +155,6 @@ export class Integer {
   }
 }
 
-export class Base64 {
-  public static encode(data: Uint8Array): string {
-    return toBase64(data);
-  }
-
-  public static decode(base64String: string): Uint8Array {
-    return fromBase64(base64String);
-  }
-}
-
 export class DateTime {
   public static decode(dateTimeString: string): ReadonlyDateWithNanoseconds {
     const readonlyDate = fromRfc3339(dateTimeString);
@@ -181,16 +171,6 @@ export class DateTime {
   }
 }
 
-export class Hex {
-  public static encode(data: Uint8Array): string {
-    return toHex(data);
-  }
-
-  public static decode(hexString: string): Uint8Array {
-    return fromHex(hexString);
-  }
-}
-
 // Encodings needed for hashing block headers
 // Several of these functions are inspired by https://github.com/nomic-io/js-tendermint/blob/tendermint-0.30/src/
 
diff --git a/packages/tendermint-rpc/types/encodings.d.ts b/packages/tendermint-rpc/types/encodings.d.ts
index 3eed64d1..f45914f8 100644
--- a/packages/tendermint-rpc/types/encodings.d.ts
+++ b/packages/tendermint-rpc/types/encodings.d.ts
@@ -57,18 +57,10 @@ export declare class Integer {
   static parse(input: string | number): number;
   static encode(num: number): string;
 }
-export declare class Base64 {
-  static encode(data: Uint8Array): string;
-  static decode(base64String: string): Uint8Array;
-}
 export declare class DateTime {
   static decode(dateTimeString: string): ReadonlyDateWithNanoseconds;
   static encode(dateTime: ReadonlyDateWithNanoseconds): string;
 }
-export declare class Hex {
-  static encode(data: Uint8Array): string;
-  static decode(hexString: string): Uint8Array;
-}
 export declare function encodeString(s: string): Uint8Array;
 export declare function encodeInt(n: number): Uint8Array;
 export declare function encodeTime(time: ReadonlyDateWithNanoseconds): Uint8Array;