diff --git a/src/auction.test.ts b/src/auction.test.ts
index 999a911..c859c45 100644
--- a/src/auction.test.ts
+++ b/src/auction.test.ts
@@ -1,6 +1,6 @@
 import assert from 'assert';
 
-import { Registry, Account } from './index';
+import { Registry, Account, createBid } from './index';
 import { getConfig } from './testing/helper';
 
 jest.setTimeout(30 * 60 * 1000);
@@ -10,7 +10,7 @@ const { chainId, restEndpoint, gqlEndpoint, privateKey, accountAddress, fee } =
 const auctionTests = (numBidders = 3) => {
   let registry: Registry;
 
-  const accounts: { address: string, privateKey: string }[] = [];
+  const accounts: { address: string, privateKey: string, bid?: any }[] = [];
 
   let auctionId: string;
   let authorityName: string;
@@ -28,11 +28,11 @@ const auctionTests = (numBidders = 3) => {
       await account.init();
       const bidderAddress = account.formattedCosmosAddress;
       assert(bidderAddress)
-      await registry.sendCoins({ denom: 'uwire', amount: '1000000000', destinationAddress: bidderAddress }, accountAddress, privateKey, fee);
+      await registry.sendCoins({ denom: 'aphoton', amount: '1000000000', destinationAddress: bidderAddress }, accountAddress, privateKey, fee);
       accounts.push({ address: bidderAddress, privateKey: account.privateKey.toString('hex') });
     }
 
-    accounts.unshift({ address: accountAddress, privateKey });
+    accounts[0] = { address: accountAddress, privateKey };
   });
 
   test('Reserve authority.', async () => {
@@ -51,6 +51,68 @@ const auctionTests = (numBidders = 3) => {
 
     auctionId = record.auction.id;
   });
+
+  test('Commit bids.', async () => {
+    for (let i = 0; i < numBidders; i++) {
+      accounts[i].bid = await createBid(chainId, auctionId, accounts[i].address, `${10000000 + (i * 500)}aphoton`);
+      await registry.commitBid({ auctionId, commitHash: accounts[i].bid.commitHash }, accounts[i].address, accounts[i].privateKey, fee);
+    }
+  });
+
+  test('Check bids are committed', async () => {
+    const [record] = await registry.lookupAuthorities([authorityName], true);
+    expect(record.auction.id).toBeDefined();
+    expect(record.auction.status).toEqual('commit');
+    expect(record.auction.bids).toHaveLength(accounts.length);
+
+    record.auction.bids.forEach((bid: any) => {
+      expect(bid.status).toEqual('commit');
+    });
+  });
+
+  test('Wait for reveal phase.', (done) => {
+    setTimeout(done, 60 * 1000);
+  });
+
+  test('Reveal bids.', async () => {
+    const [auction] = await registry.getAuctionsByIds([auctionId]);
+    expect(auction.status).toEqual('reveal');
+
+    for (let i = 0; i < numBidders; i++) {
+      // eslint-disable-next-line no-await-in-loop
+      await registry.revealBid({ auctionId, reveal: accounts[i].bid.revealString }, accounts[i].address, accounts[i].privateKey, fee);
+    }
+  });
+
+  test('Check bids are revealed', async () => {
+    const [auction] = await registry.getAuctionsByIds([auctionId]);
+    expect(auction.status).toEqual('reveal');
+
+    auction.bids.forEach((bid: any) => {
+      expect(bid.status).toEqual('reveal');
+    });
+  });
+
+  test('Wait for auction completion.', (done) => {
+    setTimeout(done, 60 * 1000);
+  });
+
+  test('Check auction winner, authority owner and status.', async () => {
+    const [auction] = await registry.getAuctionsByIds([auctionId]);
+    expect(auction.status).toEqual('completed');
+
+    const highestBidder = accounts[accounts.length - 1];
+    const secondHighestBidder = (accounts.length > 1 ? accounts[accounts.length - 2] : highestBidder);
+
+    expect(auction.winnerAddress).toEqual(highestBidder.address);
+    expect(highestBidder.bid.reveal.bidAmount).toEqual(`${auction.winnerBid.quantity}${auction.winnerBid.type}`);
+    expect(secondHighestBidder.bid.reveal.bidAmount).toEqual(`${auction.winnerPrice.quantity}${auction.winnerPrice.type}`);
+
+    const [record] = await registry.lookupAuthorities([authorityName], true);
+    expect(record.ownerAddress).toEqual(highestBidder.address);
+    expect(record.height).toBeDefined();
+    expect(record.status).toEqual('active');
+  });
 };
 
 const withNumBidders = (numBidders: number) => () => auctionTests(numBidders);
@@ -70,6 +132,6 @@ if (!process.env.AUCTIONS_ENABLED) {
     yarn test:auctions
   */
   describe('Auction (1 bidder)', withNumBidders(1));
-  describe('Auction (2 bidders)', withNumBidders(2));
-  describe('Auction (4 bidders)', withNumBidders(4));
+  xdescribe('Auction (2 bidders)', withNumBidders(2));
+  xdescribe('Auction (4 bidders)', withNumBidders(4));
 }
diff --git a/src/index.ts b/src/index.ts
index 454399b..885fda1 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -9,12 +9,40 @@ import {
   MessageSendParams
 } from '@tharsis/transactions'
 
-import { createTxMsgCancelBond, createTxMsgCreateBond, createTxMsgRefillBond, createTxMsgWithdrawBond, MessageMsgCancelBond, MessageMsgCreateBond, MessageMsgRefillBond, MessageMsgWithdrawBond } from "./messages/bond";
 import { RegistryClient } from "./registry-client";
 import { Account } from "./account";
 import { createTransaction } from "./txbuilder";
-import { createTxMsgDeleteName, createTxMsgReserveAuthority, createTxMsgSetAuthorityBond, createTxMsgSetName, createTxMsgSetRecord, MessageMsgDeleteName, MessageMsgReserveAuthority, MessageMsgSetAuthorityBond, MessageMsgSetName, MessageMsgSetRecord, NAMESERVICE_ERRORS } from './messages/nameservice';
 import { Payload, Record } from './types';
+import { Util } from './util';
+import {
+  createTxMsgCancelBond,
+  createTxMsgCreateBond,
+  createTxMsgRefillBond,
+  createTxMsgWithdrawBond,
+  MessageMsgCancelBond,
+  MessageMsgCreateBond,
+  MessageMsgRefillBond,
+  MessageMsgWithdrawBond
+} from "./messages/bond";
+import {
+  createTxMsgDeleteName,
+  createTxMsgReserveAuthority,
+  createTxMsgSetAuthorityBond,
+  createTxMsgSetName,
+  createTxMsgSetRecord,
+  MessageMsgDeleteName,
+  MessageMsgReserveAuthority,
+  MessageMsgSetAuthorityBond,
+  MessageMsgSetName,
+  MessageMsgSetRecord,
+  NAMESERVICE_ERRORS
+} from './messages/nameservice';
+import {
+  createTxMsgCommitBid,
+  createTxMsgRevealBid,
+  MessageMsgCommitBid,
+  MessageMsgRevealBid
+} from './messages/auction';
 
 const DEFAULT_WRITE_ERROR = 'Unable to write to chiba-clonk.';
 
@@ -35,6 +63,32 @@ export const parseTxResponse = (result: any) => {
   return { hash, height, ...txResponse };
 };
 
+/**
+ * Create an auction bid.
+ */
+ export const createBid = async (chainId: string, auctionId: string, bidderAddress: string, bidAmount: string, noise?: string) => {
+  if (!noise) {
+    noise = Account.generateMnemonic();
+  }
+
+  const reveal = {
+    chainId,
+    auctionId,
+    bidderAddress,
+    bidAmount,
+    noise
+  };
+
+  const commitHash = await Util.getContentId(reveal);
+  const revealString = Buffer.from(JSON.stringify(reveal)).toString('hex');
+
+  return {
+    commitHash,
+    reveal,
+    revealString
+  };
+};
+
 export const isKeyValid = (key: string) => key && key.match(/^[0-9a-fA-F]{64}$/);
 
 export class Registry {
@@ -71,7 +125,7 @@ export class Registry {
   /**
    * Get account by addresses.
    */
-   async getAccount(address: string) {
+  async getAccount(address: string) {
     return this._client.getAccount(address);
   }
 
@@ -108,7 +162,7 @@ export class Registry {
   /**
    * Send coins.
    */
-   async sendCoins(params: MessageSendParams, senderAddress: string, privateKey: string, fee: Fee) {
+  async sendCoins(params: MessageSendParams, senderAddress: string, privateKey: string, fee: Fee) {
     let result;
     const { account: { base_account: accountInfo } } = await this.getAccount(senderAddress);
 
@@ -128,7 +182,7 @@ export class Registry {
   /**
    * Computes the next bondId for the given account private key.
    */
-   async getNextBondId(address: string) {
+  async getNextBondId(address: string) {
     let result;
     const { account } = await this.getAccount(address);
     const accountObj = account.base_account;
@@ -142,21 +196,21 @@ export class Registry {
   /**
    * Get bonds by ids.
    */
-   async getBondsByIds(ids: string[]) {
+  async getBondsByIds(ids: string[]) {
     return this._client.getBondsByIds(ids);
   }
 
   /**
    * Query bonds by attributes.
    */
-   async queryBonds(attributes = {}) {
+  async queryBonds(attributes = {}) {
     return this._client.queryBonds(attributes);
   }
 
   /**
    * Create bond.
    */
-   async createBond(params: MessageMsgCreateBond, senderAddress: string, privateKey: string, fee: Fee) {
+  async createBond(params: MessageMsgCreateBond, senderAddress: string, privateKey: string, fee: Fee) {
     let result;
     const { account: { base_account: accountInfo } } = await this.getAccount(senderAddress);
 
@@ -176,7 +230,7 @@ export class Registry {
   /**
    * Refill bond.
    */
-   async refillBond(params: MessageMsgRefillBond, senderAddress: string, privateKey: string, fee: Fee) {
+  async refillBond(params: MessageMsgRefillBond, senderAddress: string, privateKey: string, fee: Fee) {
     let result;
     const { account: { base_account: accountInfo } } = await this.getAccount(senderAddress);
 
@@ -196,7 +250,7 @@ export class Registry {
   /**
    * Withdraw (from) bond.
    */
-   async withdrawBond(params: MessageMsgWithdrawBond, senderAddress: string, privateKey: string, fee: Fee) {
+  async withdrawBond(params: MessageMsgWithdrawBond, senderAddress: string, privateKey: string, fee: Fee) {
     let result;
     const { account: { base_account: accountInfo } } = await this.getAccount(senderAddress);
 
@@ -277,6 +331,53 @@ export class Registry {
     return parseTxResponse(result);
   }
 
+  /**
+   * Commit auction bid.
+   */
+  async commitBid(params: MessageMsgCommitBid, senderAddress: string, privateKey: string, fee: Fee) {
+    let result;
+    const { account: { base_account: accountInfo } } = await this.getAccount(senderAddress);
+
+    const sender = {
+      accountAddress: accountInfo.address,
+      sequence: accountInfo.sequence,
+      accountNumber: accountInfo.account_number,
+      pubkey: accountInfo.pub_key.key,
+    }
+
+    const msg = createTxMsgCommitBid(this._chain, sender, fee, '', params)
+    result = await this._submitTx(msg, privateKey, sender);
+
+    return parseTxResponse(result);
+  }
+
+  /**
+   * Reveal auction bid.
+   */
+   async revealBid(params: MessageMsgRevealBid, senderAddress: string, privateKey: string, fee: Fee) {
+    let result;
+    const { account: { base_account: accountInfo } } = await this.getAccount(senderAddress);
+
+    const sender = {
+      accountAddress: accountInfo.address,
+      sequence: accountInfo.sequence,
+      accountNumber: accountInfo.account_number,
+      pubkey: accountInfo.pub_key.key,
+    }
+
+    const msg = createTxMsgRevealBid(this._chain, sender, fee, '', params)
+    result = await this._submitTx(msg, privateKey, sender);
+
+    return parseTxResponse(result);
+  }
+
+  /**
+   * Get records by ids.
+   */
+  async getAuctionsByIds(ids: string[]) {
+    return this._client.getAuctionsByIds(ids);
+  }
+
   /**
    * Lookup authorities by names.
    */
diff --git a/src/messages/auction.ts b/src/messages/auction.ts
new file mode 100644
index 0000000..ddb6ad0
--- /dev/null
+++ b/src/messages/auction.ts
@@ -0,0 +1,149 @@
+import {
+  generateTypes,
+} from '@tharsis/eip712'
+import {
+  Chain,
+  Sender,
+  Fee,
+} from '@tharsis/transactions'
+
+import * as auctionTx from '../proto/vulcanize/auction/v1beta1/tx'
+import { createTx } from './util'
+
+const MSG_COMMIT_BID_TYPES = {
+  MsgValue: [
+    { name: 'auction_id', type: 'string' },
+    { name: 'commit_hash', type: 'string' },
+    { name: 'signer', type: 'string' },
+  ]
+}
+
+export interface MessageMsgCommitBid {
+  auctionId: string,
+  commitHash: string,
+}
+
+const MSG_REVEAL_BID_TYPES = {
+  MsgValue: [
+    { name: 'auction_id', type: 'string' },
+    { name: 'reveal', type: 'string' },
+    { name: 'signer', type: 'string' },
+  ]
+}
+
+export interface MessageMsgRevealBid {
+  auctionId: string,
+  reveal: string,
+}
+
+export function createTxMsgCommitBid(
+  chain: Chain,
+  sender: Sender,
+  fee: Fee,
+  memo: string,
+  params: MessageMsgCommitBid,
+) {
+  const types = generateTypes(MSG_COMMIT_BID_TYPES)
+
+  const msg = createMsgCommitBid(
+    params.auctionId,
+    params.commitHash,
+    sender.accountAddress,
+  )
+
+  const msgCosmos = protoCreateMsgCommitBid(
+    params.auctionId,
+    params.commitHash,
+    sender.accountAddress,
+  )
+
+  return createTx(chain, sender, fee, memo, types, msg, msgCosmos)
+}
+
+export function createTxMsgRevealBid(
+  chain: Chain,
+  sender: Sender,
+  fee: Fee,
+  memo: string,
+  params: MessageMsgRevealBid,
+) {
+  const types = generateTypes(MSG_REVEAL_BID_TYPES)
+
+  const msg = createMsgRevealBid(
+    params.auctionId,
+    params.reveal,
+    sender.accountAddress,
+  )
+
+  const msgCosmos = protoCreateMsgRevealBid(
+    params.auctionId,
+    params.reveal,
+    sender.accountAddress,
+  )
+
+  return createTx(chain, sender, fee, memo, types, msg, msgCosmos)
+}
+
+function createMsgCommitBid(
+  auctionId: string,
+  commitHash: string,
+  signer: string
+) {
+  return {
+    type: 'auction/MsgCommitBid',
+    value: {
+      auction_id: auctionId,
+      commit_hash: commitHash,
+      signer,
+    },
+  }
+}
+
+const protoCreateMsgCommitBid = (
+  auctionId: string,
+  commitHash: string,
+  signer: string
+) => {
+  const commitBidMessage = new auctionTx.vulcanize.auction.v1beta1.MsgCommitBid({
+    auction_id: auctionId,
+    commit_hash: commitHash,
+    signer,
+  })
+
+  return {
+    message: commitBidMessage,
+    path: 'vulcanize.auction.v1beta1.MsgCommitBid',
+  }
+}
+
+function createMsgRevealBid(
+  auctionId: string,
+  reveal: string,
+  signer: string
+) {
+  return {
+    type: 'auction/MsgRevealBid',
+    value: {
+      auction_id: auctionId,
+      reveal,
+      signer,
+    },
+  }
+}
+
+const protoCreateMsgRevealBid = (
+  auctionId: string,
+  reveal: string,
+  signer: string
+) => {
+  const revealBidMessage = new auctionTx.vulcanize.auction.v1beta1.MsgRevealBid({
+    auction_id: auctionId,
+    reveal,
+    signer,
+  })
+
+  return {
+    message: revealBidMessage,
+    path: 'vulcanize.auction.v1beta1.MsgRevealBid',
+  }
+}
diff --git a/src/registry-client.ts b/src/registry-client.ts
index 5fa4e23..706ecef 100644
--- a/src/registry-client.ts
+++ b/src/registry-client.ts
@@ -136,7 +136,7 @@ export class RegistryClient {
   /**
    * Fetch Account.
    */
-   async getAccount(address: string) {
+  async getAccount(address: string) {
     assert(address);
 
     let { data } = await axios.get(`${this._restEndpoint}${generateEndpointAccount(address)}`)
@@ -147,7 +147,7 @@ export class RegistryClient {
   /**
    * Get records by attributes.
    */
-   async queryRecords(attributes: {[key: string]: any}, all = false, refs = false) {
+  async queryRecords(attributes: {[key: string]: any}, all = false, refs = false) {
     if (!attributes) {
       attributes = {};
     }
@@ -179,7 +179,7 @@ export class RegistryClient {
   /**
    * Lookup authorities by names.
    */
-   async lookupAuthorities(names: string[], auction = false) {
+  async lookupAuthorities(names: string[], auction = false) {
     assert(names.length);
 
     const query = `query ($names: [String!]) {
@@ -203,6 +203,26 @@ export class RegistryClient {
     return result['lookupAuthorities'];
   }
 
+  /**
+   * Get auctions by ids.
+   */
+  async getAuctionsByIds(ids: string[]) {
+    assert(ids);
+    assert(ids.length);
+
+    const query = `query ($ids: [String!]) {
+      getAuctionsByIds(ids: $ids) {
+        ${auctionFields}
+      }
+    }`;
+
+    const variables = {
+      ids
+    };
+
+    return RegistryClient.getResult(this._graph(query)(variables), 'getAuctionsByIds');
+  }
+
   /**
    * Lookup names.
    */