rezzecup / runelib

A Bitcoin Runes library written in TypeScript

RuneLib

runelib is a TypeScript library for Runes on Bitcoin. It enciphers and deciphers Rune protocol messages called "runestones", which are used to mint and etch Rune tokens.

It works in both node.js and browsers.

Installation

npm install runelib

Decipher/Decode

const mintRawTx = '02000000000101dc58870c48618a937cda4ea238587e17413dde50f8fb8de0e87144acea817bbb0100000000fdffffff030000000000000000086a5d0514d301140110270000000000002251207817a206d8fc43fe54a61a94dd4ff01ec7286826cf44526a59265bf9d3909c66f39b052a01000000225120675fad4019ca08cdc3cf8678af6faa6686b719389a930b0fa13c4ecf9ea7d08b0140f775e5e75ac8ed4d1556779525da619851a95d8328a78382c1c719cf28c76eaf550551643b9e92feba132f75595992d34babe1193ecfad03eb5d830b42da10c100000000'

const stone = Runestone.decipher(mintRawTx);

Encipher/Encode

const block = 2586233;
const txIndex = 1009;
const mintstone = new Runestone([], none(), some(new RuneId(block, txIndex)), some(1));

const buffer = mintstone.encipher();

Mint

The following example code mints UNCOMMON•GOODS.

async function mint() {
    const mintstone = new Runestone([], none(), some(new RuneId(1, 0)), some(1));

    const keyPair = ECPair.fromWIF(
        yourKey,
        network
    );

    const { address, } = payments.p2wpkh({ pubkey: keyPair.publicKey, network })

    console.log('address:', address)

    const utxos = await waitUntilUTXO(address as string)
    console.log(`Using UTXO ${utxos[0].txid}:${utxos[0].vout}`);

    const psbt = new Psbt({ network });
    psbt.addInput({
        hash: utxos[0].txid,
        index: utxos[0].vout,
        witnessUtxo: { value: utxos[0].value, script: Address.toOutputScript(address as string, network) },
    });

    psbt.addOutput({
        script: mintstone.encipher(),
        value: 0
    });

    psbt.addOutput({
        address: ord_address, // ord address
        value: 10000
    });

    const fee = 5000;

    const change = utxos[0].value - fee - 10000;

    psbt.addOutput({
        address: change_address, // change address
        value: change
    });

    await signAndSend(keyPair, psbt, address as string);
}

Etch

The following example code etches a new token.

async function etching() {
    const name = "CCCCCCCCCCCCCCCCCCNH";

    const keyPair = ECPair.fromWIF(
        your_key,
        network
    );

    const ins = new EtchInscription()

    ins.setContent("text/plain", Buffer.from('scrypt is best', 'utf-8'))
    ins.setRune(name)

    const etching_script_asm = `${toXOnly(keyPair.publicKey).toString(
        "hex"
    )} OP_CHECKSIG`;
    const etching_script = Buffer.concat([script.fromASM(etching_script_asm), ins.encipher()]);

    const scriptTree: Taptree = {
        output: etching_script,
    }

    const script_p2tr = payments.p2tr({
        internalPubkey: toXOnly(keyPair.publicKey),
        scriptTree,
        network,
    });

    const etching_redeem = {
        output: etching_script,
        redeemVersion: 192
    }


    const etching_p2tr = payments.p2tr({
        internalPubkey: toXOnly(keyPair.publicKey),
        scriptTree,
        redeem: etching_redeem,
        network
    });


    const address = script_p2tr.address ?? "";
    console.log("send coin to address", address);

    const utxos = await waitUntilUTXO(address as string)
    console.log(`Using UTXO ${utxos[0].txid}:${utxos[0].vout}`);

    const psbt = new Psbt({ network });


    psbt.addInput({
        hash: utxos[0].txid,
        index: utxos[0].vout,
        witnessUtxo: { value: utxos[0].value, script: script_p2tr.output! },
        tapLeafScript: [
            {
                leafVersion: etching_redeem.redeemVersion,
                script: etching_redeem.output,
                controlBlock: etching_p2tr.witness![etching_p2tr.witness!.length - 1]
            }
        ]
    });

    const rune = Rune.fromName(name)

    const amount = 1000;
    const cap = 21000;
    const terms = new Terms(amount, cap, new Range(none(), none()), new Range(none(), none()))
    const symbol = "$"
    const premine = none();
    const divisibility = none();
    const etching = new Etching(divisibility, premine, some(rune), none(), some(symbol), some(terms), true);

    const stone = new Runestone([], some(etching), none(), none());

    psbt.addOutput({
        script: stone.encipher(),
        value: 0
    })


    const fee = 5000;

    const change = utxos[0].value - 546 - fee;

    psbt.addOutput({
        address: ord_address, // ord address
        value: 546
    });

    psbt.addOutput({
        address: change_address, // change address
        value: change
    });

    await signAndSend(keyPair, psbt, address as string);
}

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Contributing

All contributions are welcome. Feel free to open PRs.