diff --git a/src/main/java/org/qortal/controller/tradebot/TradeBotUtils.java b/src/main/java/org/qortal/controller/tradebot/TradeBotUtils.java
new file mode 100644
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+++ b/src/main/java/org/qortal/controller/tradebot/TradeBotUtils.java
@@ -0,0 +1,217 @@
+package org.qortal.controller.tradebot;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.bitcoinj.core.Transaction;
+import org.qortal.account.PrivateKeyAccount;
+import org.qortal.api.resource.CrossChainUtils;
+import org.qortal.crosschain.ACCT;
+import org.qortal.crosschain.Bitcoiny;
+import org.qortal.crosschain.BitcoinyHTLC;
+import org.qortal.crosschain.ForeignBlockchainException;
+import org.qortal.crypto.Crypto;
+import org.qortal.data.crosschain.CrossChainTradeData;
+import org.qortal.data.crosschain.TradeBotData;
+import org.qortal.data.transaction.MessageTransactionData;
+import org.qortal.group.Group;
+import org.qortal.repository.DataException;
+import org.qortal.repository.Repository;
+import org.qortal.repository.RepositoryManager;
+import org.qortal.transaction.MessageTransaction;
+import org.qortal.utils.Base58;
+import org.qortal.utils.NTP;
+import org.qortal.transaction.Transaction.ValidationResult;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.qortal.controller.tradebot.TradeStates.State;
+
+public class TradeBotUtils {
+
+    private static final Logger LOGGER = LogManager.getLogger(TradeBotUtils.class);
+    /**
+     * Creates trade-bot entries from the 'Alice' viewpoint, i.e. matching Bitcoiny coin to existing offers.
+     * <p>
+     * Requires chosen trade offers from Bob, passed by <tt>crossChainTradeData</tt>
+     * and access to a Blockchain wallet via <tt>foreignKey</tt>.
+     * <p>
+     * The <tt>crossChainTradeData</tt> contains the current trade offers state
+     * as extracted from the AT's data segment.
+     * <p>
+     * Access to a funded wallet is via a Blockchain BIP32 hierarchical deterministic key,
+     * passed via <tt>foreignKey</tt>.
+     * <b>This key will be stored in your node's database</b>
+     * to allow trade-bot to create/fund the necessary P2SH transactions!
+     * However, due to the nature of BIP32 keys, it is possible to give the trade-bot
+     * only a subset of wallet access (see BIP32 for more details).
+     * <p>
+     * As an example, the foreignKey can be extract from a <i>legacy, password-less</i>
+     * Electrum wallet by going to the console tab and entering:<br>
+     * <tt>wallet.keystore.xprv</tt><br>
+     * which should result in a base58 string starting with either 'xprv' (for Blockchain main-net)
+     * or 'tprv' for (Blockchain test-net).
+     * <p>
+     * It is envisaged that the value in <tt>foreignKey</tt> will actually come from a Qortal-UI-managed wallet.
+     * <p>
+     * If sufficient funds are available, <b>this method will actually fund the P2SH-A</b>
+     * with the Blockchain amount expected by 'Bob'.
+     * <p>
+     * If the Blockchain transaction is successfully broadcast to the network then
+     * we also send a MESSAGE to Bob's trade-bot to let them know; one message for each trade.
+     * <p>
+     * The trade-bot entries are saved to the repository and the cross-chain trading process commences.
+     * <p>
+     *
+     * @param repository for backing up the trade bot data
+     * @param crossChainTradeDataList chosen trade OFFERs that Alice wants to match
+     * @param receiveAddress Alice's Qortal address
+     * @param foreignKey              funded wallet xprv in base58
+     * @param bitcoiny the bitcoiny chain to match the sell offer with
+     * @return true if P2SH-A funding transaction successfully broadcast to Blockchain network, false otherwise
+     * @throws DataException
+     */
+    public static AcctTradeBot.ResponseResult startResponseMultiple(
+            Repository repository,
+            ACCT acct,
+            List<CrossChainTradeData> crossChainTradeDataList,
+            String receiveAddress,
+            String foreignKey,
+            Bitcoiny bitcoiny) throws DataException {
+
+        // Check we have enough funds via foreignKey to fund P2SH to cover expectedForeignAmount
+        long now = NTP.getTime();
+        long p2shFee;
+        try {
+            p2shFee = bitcoiny.getP2shFee(now);
+        } catch (ForeignBlockchainException e) {
+            LOGGER.debug("Couldn't estimate blockchain transaction fees?");
+            return AcctTradeBot.ResponseResult.NETWORK_ISSUE;
+        }
+
+        Map<String, Long> valueByP2shAddress = new HashMap<>(crossChainTradeDataList.size());
+
+        class DataCombiner{
+            CrossChainTradeData crossChainTradeData;
+            TradeBotData tradeBotData;
+            String p2shAddress;
+
+            public DataCombiner(CrossChainTradeData crossChainTradeData, TradeBotData tradeBotData, String p2shAddress) {
+                this.crossChainTradeData = crossChainTradeData;
+                this.tradeBotData = tradeBotData;
+                this.p2shAddress = p2shAddress;
+            }
+        }
+
+        List<DataCombiner> dataToProcess = new ArrayList<>();
+
+        for(CrossChainTradeData crossChainTradeData : crossChainTradeDataList) {
+            byte[] tradePrivateKey = TradeBot.generateTradePrivateKey();
+            byte[] secretA = TradeBot.generateSecret();
+            byte[] hashOfSecretA = Crypto.hash160(secretA);
+
+            byte[] tradeNativePublicKey = TradeBot.deriveTradeNativePublicKey(tradePrivateKey);
+            byte[] tradeNativePublicKeyHash = Crypto.hash160(tradeNativePublicKey);
+            String tradeNativeAddress = Crypto.toAddress(tradeNativePublicKey);
+
+            byte[] tradeForeignPublicKey = TradeBot.deriveTradeForeignPublicKey(tradePrivateKey);
+            byte[] tradeForeignPublicKeyHash = Crypto.hash160(tradeForeignPublicKey);
+            // We need to generate lockTime-A: add tradeTimeout to now
+            int lockTimeA = (crossChainTradeData.tradeTimeout * 60) + (int) (now / 1000L);
+            byte[] receivingPublicKeyHash = Base58.decode(receiveAddress); // Actually the whole address, not just PKH
+
+            TradeBotData tradeBotData = new TradeBotData(tradePrivateKey, acct.getClass().getSimpleName(),
+                    State.ALICE_WAITING_FOR_AT_LOCK.name(), State.ALICE_WAITING_FOR_AT_LOCK.value,
+                    receiveAddress,
+                    crossChainTradeData.qortalAtAddress,
+                    now,
+                    crossChainTradeData.qortAmount,
+                    tradeNativePublicKey, tradeNativePublicKeyHash, tradeNativeAddress,
+                    secretA, hashOfSecretA,
+                    crossChainTradeData.foreignBlockchain,
+                    tradeForeignPublicKey, tradeForeignPublicKeyHash,
+                    crossChainTradeData.expectedForeignAmount,
+                    foreignKey, null, lockTimeA, receivingPublicKeyHash);
+
+            // Attempt to backup the trade bot data
+            // Include tradeBotData as an additional parameter, since it's not in the repository yet
+            TradeBot.backupTradeBotData(repository, Arrays.asList(tradeBotData));
+
+            // Fee for redeem/refund is subtracted from P2SH-A balance.
+            // Do not include fee for funding transaction as this is covered by buildSpend()
+            long amountA = crossChainTradeData.expectedForeignAmount + p2shFee /*redeeming/refunding P2SH-A*/;
+
+            // P2SH-A to be funded
+            byte[] redeemScriptBytes = BitcoinyHTLC.buildScript(tradeForeignPublicKeyHash, lockTimeA, crossChainTradeData.creatorForeignPKH, hashOfSecretA);
+            String p2shAddress = bitcoiny.deriveP2shAddress(redeemScriptBytes);
+
+            valueByP2shAddress.put(p2shAddress, amountA);
+
+            dataToProcess.add(new DataCombiner(crossChainTradeData, tradeBotData, p2shAddress));
+        }
+
+        // Build transaction for funding P2SH-A
+        Transaction p2shFundingTransaction = bitcoiny.buildSpendMultiple(foreignKey, valueByP2shAddress, null);
+        if (p2shFundingTransaction == null) {
+            LOGGER.debug("Unable to build P2SH-A funding transaction - lack of funds?");
+            return AcctTradeBot.ResponseResult.BALANCE_ISSUE;
+        }
+
+        try {
+            bitcoiny.broadcastTransaction(p2shFundingTransaction);
+        } catch (ForeignBlockchainException e) {
+            // We couldn't fund P2SH-A at this time
+            LOGGER.debug("Couldn't broadcast P2SH-A funding transaction?");
+            return AcctTradeBot.ResponseResult.NETWORK_ISSUE;
+        }
+
+        for(DataCombiner datumToProcess : dataToProcess ) {
+            // Attempt to send MESSAGE to Bob's Qortal trade address
+            TradeBotData tradeBotData = datumToProcess.tradeBotData;
+
+            byte[] messageData = CrossChainUtils.buildOfferMessage(tradeBotData.getTradeForeignPublicKeyHash(), tradeBotData.getHashOfSecret(), tradeBotData.getLockTimeA());
+            CrossChainTradeData crossChainTradeData = datumToProcess.crossChainTradeData;
+            String messageRecipient = crossChainTradeData.qortalCreatorTradeAddress;
+
+            boolean isMessageAlreadySent = repository.getMessageRepository().exists(tradeBotData.getTradeNativePublicKey(), messageRecipient, messageData);
+            if (!isMessageAlreadySent) {
+                // Do this in a new thread so caller doesn't have to wait for computeNonce()
+                // In the unlikely event that the transaction doesn't validate then the buy won't happen and eventually Alice's AT will be refunded
+                new Thread(() -> {
+                    try (final Repository threadsRepository = RepositoryManager.getRepository()) {
+                        PrivateKeyAccount sender = new PrivateKeyAccount(threadsRepository, tradeBotData.getTradePrivateKey());
+                        MessageTransaction messageTransaction = MessageTransaction.build(threadsRepository, sender, Group.NO_GROUP, messageRecipient, messageData, false, false);
+
+                        LOGGER.info("Computing nonce at difficulty {} for AT {} and recipient {}", messageTransaction.getPoWDifficulty(), tradeBotData.getAtAddress(), messageRecipient);
+                        messageTransaction.computeNonce();
+                        MessageTransactionData newMessageTransactionData = (MessageTransactionData) messageTransaction.getTransactionData();
+                        LOGGER.info("Computed nonce {} at difficulty {}", newMessageTransactionData.getNonce(), messageTransaction.getPoWDifficulty());
+                        messageTransaction.sign(sender);
+
+                        // reset repository state to prevent deadlock
+                        threadsRepository.discardChanges();
+
+                        if (messageTransaction.isSignatureValid()) {
+                            ValidationResult result = messageTransaction.importAsUnconfirmed();
+
+                            if (result != ValidationResult.OK) {
+                                LOGGER.warn(() -> String.format("Unable to send MESSAGE to Bob's trade-bot %s: %s", messageRecipient, result.name()));
+                            }
+                        } else {
+                            LOGGER.warn(() -> String.format("Unable to send MESSAGE to Bob's trade-bot %s: signature invalid", messageRecipient));
+                        }
+                    } catch (DataException e) {
+                        LOGGER.warn(() -> String.format("Unable to send MESSAGE to Bob's trade-bot %s: %s", messageRecipient, e.getMessage()));
+                    }
+                }, "TradeBot response").start();
+            }
+
+            TradeBot.updateTradeBotState(repository, tradeBotData, () -> String.format("Funding P2SH-A %s. Messaged Bob. Waiting for AT-lock", datumToProcess.p2shAddress));
+        }
+
+        return AcctTradeBot.ResponseResult.OK;
+    }
+}
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