Sign a Partially Signed Bitcoin Transaction (PSBT)

In this example, we are going to sign a PBST with a Bitcoin wallet.

React

  import { 
    type BitcoinSignPsbtRequest,
    isBitcoinWallet, 
  } from '@dynamic-labs/bitcoin';

  // the wallet object is the wallet you want to send from
  // you can access the available wallets via the `useUserWallets` hook
  // or get the primaryWallet via the `useDynamicContext` hook
  const SignPsbtButton = ({ wallet }) => {
    const onSignPsbt = async () => {
      if (!isBitcoinWallet(wallet)) {
        return;
      }

      const request: BitcoinSignPsbtRequest = {
        // The PSBT request to sign
      };

      const { signedPsbt } = await wallet.signPsbt(request);

      console.log('signedPsbt', signedPsbt);
    };

    return <button onClick={onSignPsbt}>Sign PSBT</button>;
  };

JavaScript

  import { 
    type BitcoinSignPsbtRequest,
    isBitcoinWalletAccount, 
    signPsbt, 
  } from '@dynamic-labs-sdk/bitcoin';

  // the walletAccount is the wallet account you want to send from
  // you can access the available wallet accounts via the `getWalletAccounts` function
  const SignPsbtsButton = ({ walletAccount }) => {
    const onSignPsbt = async () => {
      if (!isBitcoinWalletAccount(walletAccount)) {
        return;
      }

      const request: BitcoinSignPsbtRequest = {
        // The PSBT request to sign
      };

      const { signedPsbt } = await signPsbt({
        walletAccount,
        request,
      });

      console.log('signedPsbt', signedPsbt);
    };

    return <button onClick={onSignPsbt}>Sign PSBT</button>;
  };

You can also sign multiple PSBTs at once, as shown below:

React

  import { 
    type BitcoinSignPsbtRequest,
    isBitcoinWallet, 
  } from '@dynamic-labs/bitcoin';

  // the wallet object is the wallet you want to send from
  // you can access the available wallets via the `useUserWallets` hook
  // or get the primaryWallet via the `useDynamicContext` hook
  const SignPsbtsButton = ({ wallet }) => {
    const onSignPsbts = async () => {
      if (!isBitcoinWallet(wallet)) {
        return;
      }

      const requests: BitcoinSignPsbtRequest[] = [
        // The list of PSBT requests to sign
      ];

      const signedPsbts = await wallet.signPsbts(requests);

      console.log('signedPsbts', signedPsbts);
    };

    return <button onClick={onSignPsbts}>Sign PSBTs</button>;
  };

JavaScript

  import { 
    type BitcoinSignPsbtRequest,
    isBitcoinWalletAccount, 
    signPsbts, 
  } from '@dynamic-labs-sdk/bitcoin';

  // the walletAccount is the wallet account you want to send from
  // you can access the available wallet accounts via the `getWalletAccounts` function
  const SignPsbtsButton = ({ walletAccount }) => {
    const onSignPsbts = async () => {
      if (!isBitcoinWalletAccount(walletAccount)) {
        return;
      }

      const requests: BitcoinSignPsbtRequest[] = [
        // The list ofPSBT requests to sign
      ];

      const { signedPsbts } = await signPsbts({
        walletAccount,
        requests,
      });

      console.log('signedPsbts', signedPsbts);
    };

    return <button onClick={onSignPsbts}>Sign PSBTs</button>;
  };

You can see an example of how to create PSBTs for testing in the Create a PSBT guide.