Transaction

Send to an address

You can delegate Marina to create, fund, blind, sign and broadcast a Liquid transaction to a recipient. You do not need to know anything about current balance, although is suggested to retrieve and display the balances in your application for better UX and to check beforehand for sufficient funds.

// Send 0.007 LBTC to an address

const { txid, hex } = await window.marina.sendTransaction(

[

{

address: "el1qq2c6wq4qr32vgnd5zz9kc3a9n5ancmwak66zt35vvxa7hyemqw773mtlp8z0mmwm6y5tfcq53qv5y9rfq83kqfwwquxvepy6g", // the address of the recipient

asset: "5ac9f65c0efcc4775e0baec4ec03abdde22473cd3cf33c0419ca290e0751b225", // the asset to send

value: 700000 // amount always expressed in satoshis

}

],

);

console.log(txid, hex);

This will prompt the user to allow blinding & signing a transaction.

If the prompt is accepted, the transaction will be blinded, signed and broadcasted.

Custom transaction

Developers can build custom transactions using the unspents of the exposed addresses and can delegate Marina to sign with the user consent.

import { Psbt, networks, BlindingDataLike } from 'liquidjs-lib';

// Empty psbt elements

const psbt = new liquid.Psbt({ network: networks.regtest });

// Add inputs got from marina and outputs

psbt.addInput({

//...

});

psbt.addOutput({

// ...

});

// Let's blind all the outputs. The order is important (same of output and some blinding key)

// The marina blinding private key is an hex string, we need to pass to Buffer.

await psbt.blindOutputs(

Psbt.ECCKeysGenerator(ecc),

[

Buffer.from(blindingPrivateKeyOfMarinaInput, 'hex')

],

[

blindingPublicKeyOfMarinaChangeAddress,

blindingPublicKeyOfRecipientAddress,

]

);

// encode to base64

const encodedTx = psbt.toBase64();

// now you can sign with Marina

const signedTx = await window.marina.signTransaction(encodedTx);

This will prompt the user to allow signing the custom transaction

If the prompt is accepted, will be possible to retrieve the signed base64 transaction