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Transact with Ordinal Inscriptions

Overview

You can use Bitcoin hot wallets to receive, store, and transfer ordinal inscriptions - the Bitcoin equivalent to a non-fungible token (NFT). Ordinal inscriptions enable you to secure your valuable digital files in the same way you secure bitcoin. The Bitcoin blockchain records inscribed-ordinal satoshis, enabling a public record of ownership.

Minting

The following content types are supported:

* application/json
* application/pdf
* application/pgp-signature
* application/yaml
* application/yaml
* flac
* audio/mpeg
* audio/wav
* image/apng
* image/avif
* image/gif
* image/jpeg
* image/jpg
* image/png
* image/svg+xml
* image/webp
* model/gltf-binary
* model/stl
* text/html;charset=utf-8
* text/plain;charset=utf-8
* video/mp4
* video/webm

Prerequisites

Steps

1. Mint Inscription

  • SDK
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async function mintBitcoinInscription(walletId) {
  const coin = 'btc';  
  const walletInstance = await bitgo.coin(coin).wallets().get({ id: walletId });
  const inscriptionBuilder = bitgo.coin(coin).getInscriptionBuilder(walletInstance);

  const inscriptionData = Buffer.from('BitGoNFT', 'ascii');
  const { address, tapLeafScript, revealTransactionVSize } =
    await inscriptionBuilder.prepareReveal(inscriptionData, 'text/plain');

  // Calculate Fees
  const feeRateSatPerKb = 20001;
  const sendAmount = new BigNumber( (revealTransactionVSize / 1000) * feeRateSatPerKb).plus(10000);

  // Build a commit transaction to pay reveal transaction fees.
  const builtTxn = await walletInstance.prebuildTransaction({
    recipients: [{
      amount: sendAmount.decimalPlaces(0,6).toString(),
      address: address,
    }],
  });

  const unsignedCommitTx = builtTxn.txHex;
  const unspents = builtTxn.txInfo.unspents;
  const recipientAddress = '3LXYcBoqxVcdAFgtRrNoRUjzArxtFjuPuT'

  await inscriptionBuilder.signAndSendReveal('walletPassphrase', 
    tapLeafScript, 
    address,
    Buffer.from(unsignedCommitTx, 'hex'),
    unspents,
    recipientAddress,
    inscriptionData);
}

2. Send Transaction

  • SDK
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async function sendInscription(walletId) {
  const coin = 'btc';  
  const walletInstance = await bitgo.coin(coin).wallets().get({ id: walletId });
  const inscriptionBuilder = bitgo.coin(coin).getInscriptionBuilder(walletInstance);
  const feeRateSatKb = 1001;
  const satPoint = '41eb6bb6aa7a3cf71d1ccc4429e33efcd76b9c661c014c7c943f7a81f9461e06:0:0';
  const recipient = '2MuQkZo9E3M8ryqwxPyrS2QK9yi5TtwKyog';

  const buildResult = await inscriptionBuilder.prepareTransfer(
    satPoint,
    recipient,
    feeRateSatKb,  
    { inscriptionConstraints: {
        minInscriptionOutput: BigInt(5_000),
      },
    });

  await inscriptionBuilder.signAndSendTransfer('walletPassphrase', buildResult);
}

Next

Approve the transaction.

See Also