6551.js

6551.js is a tiny library to help working with Non-fungible Token Bound Accounts. You can read more about them here:

• [https://eips.ethereum.org/EIPS/eip-6551](EIP on ethereum.org)
• [https://ethereum-magicians.org/t/erc-6551-non-fungible-token-bound-accounts/13030](EIP on ethereum magicians)
• [https://eips.ethereum.org/EIPS/eip-6551](EIP on ethereum.org)
• [https://github.com/tokenbound/contracts](Official implementation)
• [https://github.com/tokenbound/sdk](Official SDK)

Installation

You'll need to install the 6551.js package and have an instance of ethers.

npm install 6551.js --save

Then import in your project:

const { ethers } = require("ethers");

const ERC6551Registry = require("6551.js");

const provider = new ethers.JsonRpcProvider("https://rpc.ankr.com/eth_goerli");
const Registry = new ERC6551Registry(provider);

Usage

Create an account

This will generate the transaction data needed to deploy an account for a specifi NFT.

const NFT_CONTRACT = "0x5af0d9827e0c53e4799bb226655a1de152a425a5";
const NFT_ID = 1;

let unsignedTX = await Registry.prepareCreateAccount(NFT_CONTRACT, NFT_ID, Registry.DEFAULT_IMPLEMENTATION); // Implementation address and Salt are optional
let pendingTX = await signer.sendTransaction(unsignedTX)

Compute the address of an account

let expectedAddress = await Registry.getAccountAddress(NFT_CONTRACT, NFT_ID); // Implementation address and Salt are optional

Instantiate an account

There is two way to get an instance of an Account. The Account is then used to make calls/get informations.

// From parameters
let Account = await Registry.getAccount(NFT_CONTRACT, NFT_ID);  // Implementation address and Salt are optional

// From a known address
let Account2 = await Registry.getAccountFromAddress("0x324..4323434");

Make a call to an account

You can make a call to an account using prepareExecuteCall. This will generate an unsigned transaction:

// target contract, data, value in wei
let unsignedTX = await Account.prepareExecuteCall("0x324..4323434", "0x", 0); 
let pendingTX = await signer.sendTransaction(unsignedTX)

Getters on account:

let nonce = await Account.owner();
let nonce = await Account.nonce();
let nonce = await Account.isCreated(); // returns if the given account is properly deployed at the address

License and contribution

MIT License, feel free to PR or open new issues.