diff --git a/CHANGELOG.md b/CHANGELOG.md
index 053f063d..5d39c116 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -35,6 +35,8 @@
 - @cosmjs/tendermint-rpc: Export `DateTime` class.
 - @cosmjs/tendermint-rpc: Remove types `QueryString`, `Base64String`,
   `HexString`, `IntegerString` and `IpPortString`. Use `string` instead.
+- @cosmjs/tendermint-rpc: Remove types `BlockHash`, `TxBytes` and `TxHash`. Use
+  `Uint8Array` instead.
 
 ## 0.23.1 (2020-10-27)
 
diff --git a/packages/tendermint-rpc/src/adaptor.ts b/packages/tendermint-rpc/src/adaptor.ts
index 4f188d7c..27c9e4f3 100644
--- a/packages/tendermint-rpc/src/adaptor.ts
+++ b/packages/tendermint-rpc/src/adaptor.ts
@@ -3,13 +3,12 @@ import { JsonRpcRequest, JsonRpcSuccessResponse } from "@cosmjs/json-rpc";
 import * as requests from "./requests";
 import * as responses from "./responses";
 import { SubscriptionEvent } from "./rpcclients";
-import { BlockHash, TxBytes, TxHash } from "./types";
 
 export interface Adaptor {
   readonly params: Params;
   readonly responses: Responses;
-  readonly hashTx: (tx: TxBytes) => TxHash;
-  readonly hashBlock: (header: responses.Header) => BlockHash;
+  readonly hashTx: (tx: Uint8Array) => Uint8Array;
+  readonly hashBlock: (header: responses.Header) => Uint8Array;
 }
 
 // Encoder is a generic that matches all methods of Params
diff --git a/packages/tendermint-rpc/src/adaptors/v0-33/hasher.spec.ts b/packages/tendermint-rpc/src/adaptors/v0-33/hasher.spec.ts
index 6793f8b3..1933923f 100644
--- a/packages/tendermint-rpc/src/adaptors/v0-33/hasher.spec.ts
+++ b/packages/tendermint-rpc/src/adaptors/v0-33/hasher.spec.ts
@@ -2,7 +2,6 @@ import { fromBase64, fromHex } from "@cosmjs/encoding";
 import { ReadonlyDate } from "readonly-date";
 
 import { ReadonlyDateWithNanoseconds } from "../../responses";
-import { TxBytes } from "../../types";
 import { hashBlock, hashTx } from "./hasher";
 
 describe("Hasher", () => {
@@ -10,7 +9,7 @@ describe("Hasher", () => {
     // This was taken from a result from /tx_search of some random test transaction
     // curl "http://localhost:11127/tx_search?query=\"tx.hash='5CB2CF94A1097A4BC19258BC2353C3E76102B6D528458BE45C855DC5563C1DB2'\""
     const txId = fromHex("5CB2CF94A1097A4BC19258BC2353C3E76102B6D528458BE45C855DC5563C1DB2");
-    const txData = fromBase64("YUpxZDY2NURaUDMxPWd2TzBPdnNrVWFWYg==") as TxBytes;
+    const txData = fromBase64("YUpxZDY2NURaUDMxPWd2TzBPdnNrVWFWYg==");
     expect(hashTx(txData)).toEqual(txId);
   });
 
diff --git a/packages/tendermint-rpc/src/adaptors/v0-33/hasher.ts b/packages/tendermint-rpc/src/adaptors/v0-33/hasher.ts
index 3fc0c6ce..00525d2e 100644
--- a/packages/tendermint-rpc/src/adaptors/v0-33/hasher.ts
+++ b/packages/tendermint-rpc/src/adaptors/v0-33/hasher.ts
@@ -1,4 +1,4 @@
-import { Sha256 } from "@cosmjs/crypto";
+import { Sha256, sha256 } from "@cosmjs/crypto";
 
 import {
   encodeBlockId,
@@ -9,13 +9,11 @@ import {
   encodeVersion,
 } from "../../encodings";
 import { Header } from "../../responses";
-import { BlockHash, TxBytes, TxHash } from "../../types";
 
 // hash is sha256
 // https://github.com/tendermint/tendermint/blob/master/UPGRADING.md#v0260
-export function hashTx(tx: TxBytes): TxHash {
-  const hash = new Sha256(tx).digest();
-  return hash as TxHash;
+export function hashTx(tx: Uint8Array): Uint8Array {
+  return sha256(tx);
 }
 
 function getSplitPoint(n: number): number {
@@ -54,7 +52,7 @@ function hashTree(hashes: readonly Uint8Array[]): Uint8Array {
   }
 }
 
-export function hashBlock(header: Header): BlockHash {
+export function hashBlock(header: Header): Uint8Array {
   const encodedFields: readonly Uint8Array[] = [
     encodeVersion(header.version),
     encodeString(header.chainId),
@@ -72,5 +70,5 @@ export function hashBlock(header: Header): BlockHash {
     encodeBytes(header.evidenceHash),
     encodeBytes(header.proposerAddress),
   ];
-  return hashTree(encodedFields) as BlockHash;
+  return hashTree(encodedFields);
 }
diff --git a/packages/tendermint-rpc/src/adaptors/v0-33/responses.ts b/packages/tendermint-rpc/src/adaptors/v0-33/responses.ts
index 7946826d..79982127 100644
--- a/packages/tendermint-rpc/src/adaptors/v0-33/responses.ts
+++ b/packages/tendermint-rpc/src/adaptors/v0-33/responses.ts
@@ -18,7 +18,7 @@ import {
 } from "../../encodings";
 import * as responses from "../../responses";
 import { SubscriptionEvent } from "../../rpcclients";
-import { TxBytes, TxHash, ValidatorPubkey, ValidatorSignature } from "../../types";
+import { ValidatorPubkey, ValidatorSignature } from "../../types";
 import { hashTx } from "./hasher";
 
 interface AbciInfoResult {
@@ -375,7 +375,7 @@ interface RpcBroadcastTxSyncResponse extends RpcTxData {
 function decodeBroadcastTxSync(data: RpcBroadcastTxSyncResponse): responses.BroadcastTxSyncResponse {
   return {
     ...decodeTxData(data),
-    hash: fromHex(assertNotEmpty(data.hash)) as TxHash,
+    hash: fromHex(assertNotEmpty(data.hash)),
   };
 }
 
@@ -390,7 +390,7 @@ interface RpcBroadcastTxCommitResponse {
 function decodeBroadcastTxCommit(data: RpcBroadcastTxCommitResponse): responses.BroadcastTxCommitResponse {
   return {
     height: Integer.parse(data.height),
-    hash: fromHex(assertNotEmpty(data.hash)) as TxHash,
+    hash: fromHex(assertNotEmpty(data.hash)),
     checkTx: decodeTxData(assertObject(data.check_tx)),
     deliverTx: may(decodeTxData, data.deliver_tx),
   };
@@ -626,11 +626,11 @@ interface RpcTxResponse {
 
 function decodeTxResponse(data: RpcTxResponse): responses.TxResponse {
   return {
-    tx: fromBase64(assertNotEmpty(data.tx)) as TxBytes,
+    tx: fromBase64(assertNotEmpty(data.tx)),
     result: decodeTxData(assertObject(data.tx_result)),
     height: Integer.parse(assertNotEmpty(data.height)),
     index: Integer.parse(assertNumber(data.index)),
-    hash: fromHex(assertNotEmpty(data.hash)) as TxHash,
+    hash: fromHex(assertNotEmpty(data.hash)),
     proof: may(decodeTxProof, data.proof),
   };
 }
@@ -657,7 +657,7 @@ interface RpcTxEvent {
 }
 
 function decodeTxEvent(data: RpcTxEvent): responses.TxEvent {
-  const tx = fromBase64(assertNotEmpty(data.tx)) as TxBytes;
+  const tx = fromBase64(assertNotEmpty(data.tx));
   return {
     tx: tx,
     hash: hashTx(tx),
diff --git a/packages/tendermint-rpc/src/client.spec.ts b/packages/tendermint-rpc/src/client.spec.ts
index 4e0322ac..40ae694d 100644
--- a/packages/tendermint-rpc/src/client.spec.ts
+++ b/packages/tendermint-rpc/src/client.spec.ts
@@ -13,7 +13,6 @@ import { buildQuery } from "./requests";
 import * as responses from "./responses";
 import { HttpClient, RpcClient, WebsocketClient } from "./rpcclients";
 import { chainIdMatcher } from "./testutil.spec";
-import { TxBytes } from "./types";
 
 function tendermintEnabled(): boolean {
   return !!process.env.TENDERMINT_ENABLED;
@@ -30,8 +29,8 @@ async function tendermintSearchIndexUpdated(): Promise<void> {
   return sleep(75);
 }
 
-function buildKvTx(k: string, v: string): TxBytes {
-  return toAscii(`${k}=${v}`) as TxBytes;
+function buildKvTx(k: string, v: string): Uint8Array {
+  return toAscii(`${k}=${v}`);
 }
 
 function randomString(): string {
diff --git a/packages/tendermint-rpc/src/index.ts b/packages/tendermint-rpc/src/index.ts
index 3afb8913..46d92f4c 100644
--- a/packages/tendermint-rpc/src/index.ts
+++ b/packages/tendermint-rpc/src/index.ts
@@ -74,8 +74,6 @@ export {
 } from "./responses";
 export { HttpClient, WebsocketClient } from "./rpcclients"; // TODO: Why do we export those outside of this package?
 export {
-  TxBytes,
-  TxHash,
   ValidatorEd25519Pubkey,
   ValidatorEd25519Signature,
   ValidatorPubkey,
diff --git a/packages/tendermint-rpc/src/responses.ts b/packages/tendermint-rpc/src/responses.ts
index 4cea1c9d..6b940fcb 100644
--- a/packages/tendermint-rpc/src/responses.ts
+++ b/packages/tendermint-rpc/src/responses.ts
@@ -1,6 +1,6 @@
 import { ReadonlyDate } from "readonly-date";
 
-import { TxBytes, TxHash, ValidatorPubkey, ValidatorSignature } from "./types";
+import { ValidatorPubkey, ValidatorSignature } from "./types";
 
 export type Response =
   | AbciInfoResponse
@@ -68,7 +68,7 @@ export interface BlockchainResponse {
 export interface BroadcastTxAsyncResponse {}
 
 export interface BroadcastTxSyncResponse extends TxData {
-  readonly hash: TxHash;
+  readonly hash: Uint8Array;
 }
 
 /**
@@ -81,7 +81,7 @@ export function broadcastTxSyncSuccess(res: BroadcastTxSyncResponse): boolean {
 
 export interface BroadcastTxCommitResponse {
   readonly height: number;
-  readonly hash: TxHash;
+  readonly hash: Uint8Array;
   readonly checkTx: TxData;
   readonly deliverTx?: TxData;
 }
@@ -125,8 +125,8 @@ export interface StatusResponse {
  * Try to keep this compatible to TxEvent
  */
 export interface TxResponse {
-  readonly tx: TxBytes;
-  readonly hash: TxHash;
+  readonly tx: Uint8Array;
+  readonly hash: Uint8Array;
   readonly height: number;
   readonly index: number;
   readonly result: TxData;
@@ -150,8 +150,8 @@ export interface NewBlockEvent extends Block {}
 export interface NewBlockHeaderEvent extends Header {}
 
 export interface TxEvent {
-  readonly tx: TxBytes;
-  readonly hash: TxHash;
+  readonly tx: Uint8Array;
+  readonly hash: Uint8Array;
   readonly height: number;
   /** @deprecated this value is not set in Tendermint 0.34+ */
   readonly index?: number;
diff --git a/packages/tendermint-rpc/src/types.ts b/packages/tendermint-rpc/src/types.ts
index f5d55e5d..bc4d62fb 100644
--- a/packages/tendermint-rpc/src/types.ts
+++ b/packages/tendermint-rpc/src/types.ts
@@ -1,21 +1,6 @@
 // Types in this file are exported outside of the @cosmjs/tendermint-rpc package,
 // e.g. as part of a request or response
 
-import { As } from "type-tagger";
-
-/**
- * Merkle root
- */
-export type BlockHash = Uint8Array & As<"block-hash">;
-
-/** Raw transaction bytes */
-export type TxBytes = Uint8Array & As<"tx-bytes">;
-
-/**
- * A raw tendermint transaction hash, currently 20 bytes
- */
-export type TxHash = Uint8Array & As<"tx-hash">;
-
 export interface ValidatorEd25519Pubkey {
   readonly algorithm: "ed25519";
   readonly data: Uint8Array;
diff --git a/packages/tendermint-rpc/types/adaptor.d.ts b/packages/tendermint-rpc/types/adaptor.d.ts
index 9dde507b..4adad234 100644
--- a/packages/tendermint-rpc/types/adaptor.d.ts
+++ b/packages/tendermint-rpc/types/adaptor.d.ts
@@ -2,12 +2,11 @@ import { JsonRpcRequest, JsonRpcSuccessResponse } from "@cosmjs/json-rpc";
 import * as requests from "./requests";
 import * as responses from "./responses";
 import { SubscriptionEvent } from "./rpcclients";
-import { BlockHash, TxBytes, TxHash } from "./types";
 export interface Adaptor {
   readonly params: Params;
   readonly responses: Responses;
-  readonly hashTx: (tx: TxBytes) => TxHash;
-  readonly hashBlock: (header: responses.Header) => BlockHash;
+  readonly hashTx: (tx: Uint8Array) => Uint8Array;
+  readonly hashBlock: (header: responses.Header) => Uint8Array;
 }
 export declare type Encoder<T extends requests.Request> = (req: T) => JsonRpcRequest;
 export declare type Decoder<T extends responses.Response> = (res: JsonRpcSuccessResponse) => T;
diff --git a/packages/tendermint-rpc/types/adaptors/v0-33/hasher.d.ts b/packages/tendermint-rpc/types/adaptors/v0-33/hasher.d.ts
index f89426d8..2104d509 100644
--- a/packages/tendermint-rpc/types/adaptors/v0-33/hasher.d.ts
+++ b/packages/tendermint-rpc/types/adaptors/v0-33/hasher.d.ts
@@ -1,4 +1,3 @@
 import { Header } from "../../responses";
-import { BlockHash, TxBytes, TxHash } from "../../types";
-export declare function hashTx(tx: TxBytes): TxHash;
-export declare function hashBlock(header: Header): BlockHash;
+export declare function hashTx(tx: Uint8Array): Uint8Array;
+export declare function hashBlock(header: Header): Uint8Array;
diff --git a/packages/tendermint-rpc/types/index.d.ts b/packages/tendermint-rpc/types/index.d.ts
index 7c0edb71..c4de41bc 100644
--- a/packages/tendermint-rpc/types/index.d.ts
+++ b/packages/tendermint-rpc/types/index.d.ts
@@ -74,8 +74,6 @@ export {
 } from "./responses";
 export { HttpClient, WebsocketClient } from "./rpcclients";
 export {
-  TxBytes,
-  TxHash,
   ValidatorEd25519Pubkey,
   ValidatorEd25519Signature,
   ValidatorPubkey,
diff --git a/packages/tendermint-rpc/types/responses.d.ts b/packages/tendermint-rpc/types/responses.d.ts
index 52024db5..c9fbcaaf 100644
--- a/packages/tendermint-rpc/types/responses.d.ts
+++ b/packages/tendermint-rpc/types/responses.d.ts
@@ -1,5 +1,5 @@
 import { ReadonlyDate } from "readonly-date";
-import { TxBytes, TxHash, ValidatorPubkey, ValidatorSignature } from "./types";
+import { ValidatorPubkey, ValidatorSignature } from "./types";
 export declare type Response =
   | AbciInfoResponse
   | AbciQueryResponse
@@ -57,7 +57,7 @@ export interface BlockchainResponse {
 /** No data in here because RPC method BroadcastTxAsync "returns right away, with no response" */
 export interface BroadcastTxAsyncResponse {}
 export interface BroadcastTxSyncResponse extends TxData {
-  readonly hash: TxHash;
+  readonly hash: Uint8Array;
 }
 /**
  * Returns true iff transaction made it sucessfully into the transaction pool
@@ -65,7 +65,7 @@ export interface BroadcastTxSyncResponse extends TxData {
 export declare function broadcastTxSyncSuccess(res: BroadcastTxSyncResponse): boolean;
 export interface BroadcastTxCommitResponse {
   readonly height: number;
-  readonly hash: TxHash;
+  readonly hash: Uint8Array;
   readonly checkTx: TxData;
   readonly deliverTx?: TxData;
 }
@@ -99,8 +99,8 @@ export interface StatusResponse {
  * Try to keep this compatible to TxEvent
  */
 export interface TxResponse {
-  readonly tx: TxBytes;
-  readonly hash: TxHash;
+  readonly tx: Uint8Array;
+  readonly hash: Uint8Array;
   readonly height: number;
   readonly index: number;
   readonly result: TxData;
@@ -117,8 +117,8 @@ export interface ValidatorsResponse {
 export interface NewBlockEvent extends Block {}
 export interface NewBlockHeaderEvent extends Header {}
 export interface TxEvent {
-  readonly tx: TxBytes;
-  readonly hash: TxHash;
+  readonly tx: Uint8Array;
+  readonly hash: Uint8Array;
   readonly height: number;
   /** @deprecated this value is not set in Tendermint 0.34+ */
   readonly index?: number;
diff --git a/packages/tendermint-rpc/types/types.d.ts b/packages/tendermint-rpc/types/types.d.ts
index 412bee15..784cbe78 100644
--- a/packages/tendermint-rpc/types/types.d.ts
+++ b/packages/tendermint-rpc/types/types.d.ts
@@ -1,14 +1,3 @@
-import { As } from "type-tagger";
-/**
- * Merkle root
- */
-export declare type BlockHash = Uint8Array & As<"block-hash">;
-/** Raw transaction bytes */
-export declare type TxBytes = Uint8Array & As<"tx-bytes">;
-/**
- * A raw tendermint transaction hash, currently 20 bytes
- */
-export declare type TxHash = Uint8Array & As<"tx-hash">;
 export interface ValidatorEd25519Pubkey {
   readonly algorithm: "ed25519";
   readonly data: Uint8Array;