ATBCoinJS (atbcoinjs-lib)

The pure JavaScript ATBCoin library for node.js and browsers. Used by over a million wallet users and the backbone for almost all ATBCoin web wallets in production today.

Installation

npm install atbcoinjs-lib

Setup

Node.js

var atbcoin = require('atbcoinjs-lib')

Browser

If you're familiar with how to use browserify, ignore this and proceed normally. These steps are advisory only, and may not be necessary for your application.

Browserify is assumed to be installed for these steps.

From your repository, create an index.js file

module.exports = {
  base58: require('bs58'),
  atbcoin: require('atbcoinjs-lib'),
  ecurve: require('ecurve'),
  BigInteger: require('bigi')
}

Install each of the above packages locally

npm install bs58 atbcoinjs-lib ecurve bigi

After installation, use browserify to compile index.js for use in the browser:

    $ browserify index.js --standalone foo > app.js

You will now be able to use <script src="app.js" /> in your browser, with each of the above exports accessible via the global foo object (or whatever you chose for the --standalone parameter above).

NOTE: See our package.json for the currently supported version of browserify used by this repository.

NOTE: When uglifying the javascript, you must exclude the following variable names from being mangled: Array, BigInteger, Boolean, ECPair, Function, Number, Point and Script. This is because of the function-name-duck-typing used in typeforce. Example:

uglifyjs ... --mangle --reserved 'Array,BigInteger,Boolean,ECPair,Function,Number,Point'

NOTE: If you expect this library to run on an iOS 10 device, ensure that you are using [email protected] or greater.

Typescript or VSCode users

Type declarations for Typescript are available for version ^3.0.0 of the library.

npm install @types/atbcoinjs-lib

You can now use atbcoinjs-lib as a typescript compliant library.

import { HDNode, Transaction } from 'atbcoinjs-lib'

For VSCode (and other editors), users are advised to install the type declarations, as Intellisense uses that information to help you code (autocompletion, static analysis).

Report any typescript related bugs at @dlebrecht DefinitelyTyped fork, submit PRs to DefinitelyTyped

Examples

The below examples are implemented as integration tests, they should be very easy to understand. Otherwise, pull requests are appreciated. Some examples interact (via HTTPS) with a 3rd Party Blockchain Provider (3PBP).

• Generate a random address
• Generate an address from a SHA256 hash
• Import an address via WIF
• Generate a 2-of-3 P2SH multisig address
• Generate a SegWit address
• Generate a SegWit P2SH address
• Generate a SegWit 3-of-4 multisig address
• Generate a SegWit 2-of-2 P2SH multisig address
• Support the retrieval of transactions for an address (3rd party blockchain)
• Generate a Testnet address
• Generate a Litecoin address
• Create a 1-to-1 Transaction
• Create a 2-to-2 Transaction
• Create (and broadcast via 3PBP) a typical Transaction
• Create (and broadcast via 3PBP) a Transaction with an OP_RETURN output
• Create (and broadcast via 3PBP) a Transaction with a 2-of-4 P2SH(multisig) input
• Create (and broadcast via 3PBP) a Transaction with a SegWit P2SH(P2WPKH) input
• Create (and broadcast via 3PBP) a Transaction with a SegWit 3-of-4 P2SH(P2WSH(multisig)) input
• Import a BIP32 testnet xpriv and export to WIF
• Export a BIP32 xpriv, then import it
• Export a BIP32 xpub
• Create a BIP32, bitcoin, account 0, external address
• Create a BIP44, bitcoin, account 0, external address
• Create a BIP49, bitcoin testnet, account 0, external address
• Use BIP39 to generate BIP32 addresses
• Create (and broadcast via 3PBP) a Transaction where Alice can redeem the output after the expiry
• Create (and broadcast via 3PBP) a Transaction where Alice and Bob can redeem the output at any time
• Create (but fail to broadcast via 3PBP) a Transaction where Alice attempts to redeem before the expiry
• Recover a private key from duplicate R values
• Recover a BIP32 parent private key from the parent public key, and a derived, non-hardened child private key
• Generate a single-key stealth address
• Generate a single-key stealth address (randomly)
• Recover parent recipient.d, if a derived private key is leaked (and nonce was revealed)
• Generate a dual-key stealth address
• Generate a dual-key stealth address (randomly)

If you have a use case that you feel could be listed here, please ask for it!

Contributing

We are always accepting of pull requests, but we do adhere to specific standards in regards to coding style, test driven development and commit messages.

Please make your best effort to adhere to these when contributing to save on trivial corrections.

Running the test suite

npm test
npm run-script coverage

Complementing Libraries

• BIP21 - A BIP21 compatible URL encoding utility library
• BIP38 - Passphrase-protected private keys
• BIP39 - Mnemonic generation for deterministic keys
• BIP32-Utils - A set of utilities for working with BIP32
• BIP66 - Strict DER signature decoding
• BIP69 - Lexicographical Indexing of Transaction Inputs and Outputs
• Base58 - Base58 encoding/decoding
• Base58 Check - Base58 check encoding/decoding
• Bech32 - A BIP173 compliant Bech32 encoding library
• coinselect - A fee-optimizing, transaction input selection module for atbcoinjs-lib.
• merkle-lib - A performance conscious library for merkle root and tree calculations.
• minimaldata - A module to check atbcoin policy: SCRIPT_VERIFY_MINIMALDATA

LICENSE MIT