MachinecoinJS (machinecoinjs-lib)

The pure JavaScript Machinecoin library for node.js and browsers.

Features

• Clean: Pure JavaScript, concise code, easy to read.
• Tested: Coverage > 90%, third-party integration tests.
• Careful: Two person approval process for small, focused pull requests.
• Compatible: Works on Node.js and all modern browsers.
• Powerful: Support for advanced features, such as multi-sig, HD Wallets.
• Secure: Strong random number generation, PGP signed releases, trusted developers.
• Principled: No support for browsers with crap RNG (IE < 11)
• Standardized: Node community coding style, Browserify, Node's stdlib and Buffers.
• Fast: Optimized code, uses typed arrays instead of byte arrays for performance.
• Experiment-friendly: Bitcoin Mainnet and Testnet support.
• Altcoin-ready: Capable of working with machinecoin-derived cryptocurrencies (such as Dogecoin).

Should I use this in production?

If you are thinking of using the master branch of this library in production, stop. Master is not stable; it is our development branch, and only tagged releases may be classified as stable.

Installation

npm install machinecoinjs-lib

Setup

Node.js

var machinecoin = require('machinecoinjs-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'),
  machinecoin: require('machinecoinjs-lib'),
  ecurve: require('ecurve'),
  BigInteger: require('bigi'),
  Buffer: require('buffer')
}

Install each of the above packages locally

npm install bs58 machinecoinjs-lib ecurve bigi buffer

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, Buffer, 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,Buffer,ECPair,Function,Number,Point'

Examples

The below examples are implemented as integration tests, they should be very easy to understand. Otherwise, pull requests are appreciated.

• Generate a random address
• Generate a address from a SHA256 hash
• Generate a address and WIF for Litecoin
• Import an address via WIF
• Create a Transaction
• Create an OP RETURN transaction
• Create a 2-of-3 multisig P2SH address
• Spend from a 2-of-4 multisig P2SH address
• Generate a single-key stealth address
• Generate a dual-key stealth address
• Recover a BIP32 parent private key from the parent public key and a derived non-hardened child private key
• Recover a Private key from duplicate R values in a signature
• Create a CLTV locked transaction where the expiry is past
• Create a CLTV locked transaction where the parties bypass the expiry
• Create a CLTV locked transaction which fails due to expiry in the future

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

Projects utilizing MachinecoinJS

Contributors

Stefan Thomas is the inventor and creator of this project. His pioneering work made Bitcoin web wallets possible. Daniel Cousens, Wei Lu, JP Richardson and Kyle Drake lead the major refactor of the library from 0.1.3 to 1.0.0.

Since then, many people have contributed. Click here to see the comprehensive list.

Modified to work with Machinecoin by Nico205.

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

LICENSE MIT

Copyright

BitcoinJS (c) 2011-2016 bitcoinjs-lib contributors

MachinecoinJS (c) 2011-2016 bitcoinjs-lib / machinecoinjs-lib contributors

Released under MIT license