diff --git a/CHANGELOG.md b/CHANGELOG.md
index 65c13f169c..56c8ae11d1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -53,6 +53,8 @@
 - @cosmjs/launchpad: Remove `PrehashType` and the prehash type argument in
   `OfflineSigner.sign` because the signer now needs to know how to serialize an
   `StdSignDoc`.
+- @cosmjs/launchpad: Remove `makeSignBytes` in favour of `makeStdSignDoc` and
+  `serializeSignDoc`.
 - @cosmjs/launchpad-ledger: Add package supporting Ledger device integration for
   Launchpad. Two new classes are provided: `LedgerSigner` (for most use cases)
   and `LaunchpadLedger` for more fine-grained access.
diff --git a/packages/cli/README.md b/packages/cli/README.md
index 67fdef449c..fd53192cfc 100644
--- a/packages/cli/README.md
+++ b/packages/cli/README.md
@@ -66,7 +66,7 @@ const sendTokensMsg: MsgSend = {
   },
 };
 
-const signBytes = makeSignBytes(
+const signDoc = makeStdSignDoc(
   [sendTokensMsg],
   defaultFee,
   defaultNetworkId,
@@ -74,7 +74,7 @@ const signBytes = makeSignBytes(
   account_number,
   sequence,
 );
-const signature = await pen.sign(signBytes);
+const { signature } = await wallet.sign(faucetAddress, signDoc);
 const signedTx: StdTx = {
   msg: [sendTokensMsg],
   fee: defaultFee,
diff --git a/packages/cli/src/cli.ts b/packages/cli/src/cli.ts
index 6db25cda04..d4319745e1 100644
--- a/packages/cli/src/cli.ts
+++ b/packages/cli/src/cli.ts
@@ -98,7 +98,6 @@ export async function main(originalArgs: readonly string[]): Promise<void> {
         "encodeSecp256k1Signature",
         "logs",
         "makeCosmoshubPath",
-        "makeSignBytes",
         "makeStdSignDoc",
         "IndexedTx",
         "BroadcastTxResult",
diff --git a/packages/launchpad/README.md b/packages/launchpad/README.md
index 0985bb0699..294c8075fc 100644
--- a/packages/launchpad/README.md
+++ b/packages/launchpad/README.md
@@ -173,7 +173,7 @@ import { MsgExecuteContract, setupWasmExtension } from "@cosmjs/cosmwasm";
 import {
   assertIsPostTxSuccess,
   LcdClient,
-  makeSignBytes,
+  makeStdSignDoc,
   setupAuthExtension,
   StdFee,
   StdTx,
@@ -205,7 +205,7 @@ const memo = "Time for action";
 const { account_number, sequence } = (
   await client.auth.account(myAddress)
 ).result.value;
-const signBytes = makeSignBytes(
+const signDoc = makeStdSignDoc(
   [msg],
   fee,
   apiUrl,
@@ -213,7 +213,7 @@ const signBytes = makeSignBytes(
   account_number,
   sequence,
 );
-const signature = await signer.sign(myAddress, signBytes);
+const { signature } = await signer.sign(myAddress, signDoc);
 const signedTx: StdTx = {
   msg: [msg],
   fee: fee,
diff --git a/packages/launchpad/src/encoding.ts b/packages/launchpad/src/encoding.ts
index 6f11b1682c..43ae5fd7a4 100644
--- a/packages/launchpad/src/encoding.ts
+++ b/packages/launchpad/src/encoding.ts
@@ -59,15 +59,3 @@ export function serializeSignDoc(signDoc: StdSignDoc): Uint8Array {
   const sortedSignDoc = sortJson(signDoc);
   return toUtf8(JSON.stringify(sortedSignDoc));
 }
-
-/** A convenience helper to create the StdSignDoc and serialize it */
-export function makeSignBytes(
-  msgs: readonly Msg[],
-  fee: StdFee,
-  chainId: string,
-  memo: string,
-  accountNumber: number | string,
-  sequence: number | string,
-): Uint8Array {
-  return serializeSignDoc(makeStdSignDoc(msgs, fee, chainId, memo, accountNumber, sequence));
-}
diff --git a/packages/launchpad/src/index.ts b/packages/launchpad/src/index.ts
index 7220683dc9..57ac29e5cb 100644
--- a/packages/launchpad/src/index.ts
+++ b/packages/launchpad/src/index.ts
@@ -28,7 +28,7 @@ export {
   isSearchBySentFromOrToQuery,
   isSearchByTagsQuery,
 } from "./cosmosclient";
-export { makeSignBytes, makeStdSignDoc, serializeSignDoc, StdSignDoc } from "./encoding";
+export { makeStdSignDoc, serializeSignDoc, StdSignDoc } from "./encoding";
 export { buildFeeTable, FeeTable, GasLimits, GasPrice } from "./gas";
 export {
   AuthAccountsResponse,
diff --git a/packages/launchpad/src/sequence.ts b/packages/launchpad/src/sequence.ts
index cc9a8a3876..2b2050e41f 100644
--- a/packages/launchpad/src/sequence.ts
+++ b/packages/launchpad/src/sequence.ts
@@ -1,6 +1,6 @@
 import { Secp256k1, Secp256k1Signature, Sha256 } from "@cosmjs/crypto";
 
-import { makeSignBytes } from "./encoding";
+import { makeStdSignDoc, serializeSignDoc } from "./encoding";
 import { decodeSignature } from "./signature";
 import { CosmosSdkTx } from "./types";
 
@@ -30,13 +30,8 @@ export async function findSequenceForSignedTx(
 
   for (let s = min; s < upperBound; s++) {
     // console.log(`Trying sequence ${s}`);
-    const signBytes = makeSignBytes(
-      tx.value.msg,
-      tx.value.fee,
-      chainId,
-      tx.value.memo || "",
-      accountNumber,
-      s,
+    const signBytes = serializeSignDoc(
+      makeStdSignDoc(tx.value.msg, tx.value.fee, chainId, tx.value.memo || "", accountNumber, s),
     );
     const prehashed = new Sha256(signBytes).digest();
     const valid = await Secp256k1.verifySignature(secp256keSignature, prehashed, pubkey);
diff --git a/packages/launchpad/types/encoding.d.ts b/packages/launchpad/types/encoding.d.ts
index bb0268626e..0e67241045 100644
--- a/packages/launchpad/types/encoding.d.ts
+++ b/packages/launchpad/types/encoding.d.ts
@@ -22,12 +22,3 @@ export declare function makeStdSignDoc(
   sequence: number | string,
 ): StdSignDoc;
 export declare function serializeSignDoc(signDoc: StdSignDoc): Uint8Array;
-/** A convenience helper to create the StdSignDoc and serialize it */
-export declare function makeSignBytes(
-  msgs: readonly Msg[],
-  fee: StdFee,
-  chainId: string,
-  memo: string,
-  accountNumber: number | string,
-  sequence: number | string,
-): Uint8Array;
diff --git a/packages/launchpad/types/index.d.ts b/packages/launchpad/types/index.d.ts
index a767b1efc8..f80e9a78e7 100644
--- a/packages/launchpad/types/index.d.ts
+++ b/packages/launchpad/types/index.d.ts
@@ -26,7 +26,7 @@ export {
   isSearchBySentFromOrToQuery,
   isSearchByTagsQuery,
 } from "./cosmosclient";
-export { makeSignBytes, makeStdSignDoc, serializeSignDoc, StdSignDoc } from "./encoding";
+export { makeStdSignDoc, serializeSignDoc, StdSignDoc } from "./encoding";
 export { buildFeeTable, FeeTable, GasLimits, GasPrice } from "./gas";
 export {
   AuthAccountsResponse,