179 lines
11 KiB
Markdown
179 lines
11 KiB
Markdown
# BitcoinJS (bitcoinjs-lib)
|
|
[](https://travis-ci.org/bitcoinjs/bitcoinjs-lib)
|
|
[](https://www.npmjs.org/package/bitcoinjs-lib)
|
|
[](http://tip4commit.com/projects/735)
|
|
|
|
[](https://github.com/feross/standard)
|
|
|
|
|
|
The pure JavaScript Bitcoin library for node.js and browsers.
|
|
Used by over a million wallet users and the backbone for almost all Bitcoin web wallets in production today.
|
|
|
|
|
|
## 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 bitcoin-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](https://github.com/bitcoinjs/bitcoinjs-lib/tags).
|
|
|
|
|
|
## Installation
|
|
``` bash
|
|
npm install bitcoinjs-lib
|
|
```
|
|
|
|
## Setup
|
|
### Node.js
|
|
``` javascript
|
|
var bitcoin = require('bitcoinjs-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](https://github.com/substack/node-browserify) is assumed to be installed for these steps.
|
|
|
|
From your repository, create an `index.js` file
|
|
``` javascript
|
|
module.exports = {
|
|
base58: require('bs58'),
|
|
bitcoin: require('bitcoinjs-lib'),
|
|
ecurve: require('ecurve'),
|
|
BigInteger: require('bigi')
|
|
}
|
|
```
|
|
|
|
Install each of the above packages locally
|
|
``` bash
|
|
npm install bs58 bitcoinjs-lib ecurve bigi
|
|
```
|
|
|
|
After installation, use browserify to compile `index.js` for use in the browser:
|
|
``` bash
|
|
$ 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](https://github.com/dcousens/typeforce).
|
|
Example:
|
|
``` bash
|
|
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 [buffer@5.0.5](https://github.com/feross/buffer/pull/155) or greater.
|
|
|
|
### Flow
|
|
Definitions for [Flow typechecker](https://flowtype.org/) are available in flow-typed repository.
|
|
|
|
[You can either download them directly](https://github.com/flowtype/flow-typed/blob/master/definitions/npm/bitcoinjs-lib_v2.x.x/flow_v0.17.x-/bitcoinjs-lib_v2.x.x.js) from the repo, or with the flow-typed CLI
|
|
|
|
# npm install -g flow-typed
|
|
$ flow-typed install -f 0.27 bitcoinjs-lib@2.2.0 # 0.27 for flow version, 2.2.0 for bitcoinjs-lib version
|
|
|
|
The definitions are complete and up to date with version 2.2.0. The definitions are maintained by [@runn1ng](https://github.com/runn1ng).
|
|
|
|
## 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](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js#L12)
|
|
- [Generate an address from a SHA256 hash](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js#L19)
|
|
- [Import an address via WIF](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js#L29)
|
|
- [Generate a 2-of-3 multisig P2SH address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js#L36)
|
|
- [Support the retrieval of transactions for an address (3rd party blockchain)](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js#L52)
|
|
- [Generate a Testnet address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js#L73)
|
|
- [Generate a Litecoin address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js#L83)
|
|
- [Create a 1-to-1 Transaction](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/transactions.js#L14)
|
|
- [Create a 2-to-2 Transaction](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/transactions.js#L28)
|
|
- [Create (and broadcast via 3PBP) a typical Transaction](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/transactions.js#L46)
|
|
- [Create (and broadcast via 3PBP) a Transaction with an OP\_RETURN output](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/transactions.js#L88)
|
|
- [Create (and broadcast via 3PBP) a Transaction with a 2-of-4 multisig P2SH input](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/transactions.js#L115)
|
|
- [Import a BIP32 testnet xpriv and export to WIF](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/bip32.js#L8)
|
|
- [Export a BIP32 xpriv, then import it](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/bip32.js#L15)
|
|
- [Export a BIP32 xpub](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/bip32.js#L26)
|
|
- [Create a BIP32, bitcoin, account 0, external address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/bip32.js#L35)
|
|
- [Create a BIP44, bitcoin, account 0, external address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/bip32.js#L50)
|
|
- [Create a BIP49, bitcoin testnet, account 0, external address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/bip32.js#L66)
|
|
- [Use BIP39 to generate BIP32 addresses](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/bip32.js#L83)
|
|
- [Create (and broadcast via 3PBP) a Transaction where Alice can redeem the output after the expiry](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/cltv.js#L37)
|
|
- [Create (and broadcast via 3PBP) a Transaction where Alice and Bob can redeem the output at any time](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/cltv.js#L71)
|
|
- [Create (but fail to broadcast via 3PBP) a Transaction where Alice attempts to redeem before the expiry](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/cltv.js#L104)
|
|
- [Recover a private key from duplicate R values](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/crypto.js#L14)
|
|
- [Recover a BIP32 parent private key from the parent public key, and a derived, non-hardened child private key](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/crypto.js#L115)
|
|
- [Generate a single-key stealth address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/stealth.js#L70:)
|
|
- [Generate a single-key stealth address (randomly)](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/stealth.js#L89:)
|
|
- [Recover parent recipient.d, if a derived private key is leaked (and nonce was revealed)](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/stealth.js#L105)
|
|
- [Generate a dual-key stealth address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/stealth.js#L122)
|
|
- [Generate a dual-key stealth address (randomly)](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/stealth.js#L145)
|
|
|
|
If you have a use case that you feel could be listed here, please [ask for it](https://github.com/bitcoinjs/bitcoinjs-lib/issues/new)!
|
|
|
|
|
|
## Projects utilizing BitcoinJS
|
|
- [BitAddress](https://www.bitaddress.org)
|
|
- [Blockchain.info](https://blockchain.info/wallet)
|
|
- [Blocktrail](https://www.blocktrail.com/)
|
|
- [Dark Wallet](https://www.darkwallet.is/)
|
|
- [DecentralBank](http://decentralbank.com/)
|
|
- [Dogechain Wallet](https://dogechain.info)
|
|
- [EI8HT Wallet](http://ei8.ht/)
|
|
- [GreenAddress](https://greenaddress.it)
|
|
- [Helperbit](https://helperbit.com)
|
|
- [Melis Wallet](https://melis.io)
|
|
- [Robocoin](https://wallet.robocoin.com)
|
|
- [Skyhook ATM](http://projectskyhook.com)
|
|
|
|
|
|
## 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
|
|
|
|
``` bash
|
|
npm test
|
|
npm run-script coverage
|
|
```
|
|
|
|
## Complementing Libraries
|
|
- [BIP21](https://github.com/bitcoinjs/bip21) - A BIP21 compatible URL encoding utility library
|
|
- [BIP38](https://github.com/bitcoinjs/bip38) - Passphrase-protected private keys
|
|
- [BIP39](https://github.com/bitcoinjs/bip39) - Mnemonic generation for deterministic keys
|
|
- [BIP32-Utils](https://github.com/bitcoinjs/bip32-utils) - A set of utilities for working with BIP32
|
|
- [BIP66](https://github.com/bitcoinjs/bip66) - Strict DER signature decoding
|
|
- [BIP69](https://github.com/bitcoinjs/bip69) - Lexicographical Indexing of Transaction Inputs and Outputs
|
|
- [Base58](https://github.com/cryptocoinjs/bs58) - Base58 encoding/decoding
|
|
- [Base58 Check](https://github.com/bitcoinjs/bs58check) - Base58 check encoding/decoding
|
|
- [Bech32](https://github.com/bitcoinjs/bech32) - A BIP173 compliant Bech32 encoding library
|
|
- [coinselect](https://github.com/bitcoinjs/coinselect) - A fee-optimizing, transaction input selection module for bitcoinjs-lib.
|
|
- [merkle-lib](https://github.com/bitcoinjs/merkle-lib) - A performance conscious library for merkle root and tree calculations.
|
|
- [minimaldata](https://github.com/bitcoinjs/minimaldata) - A module to check bitcoin policy: SCRIPT_VERIFY_MINIMALDATA
|
|
|
|
|
|
## Alternatives
|
|
- [BCoin](https://github.com/indutny/bcoin)
|
|
- [Bitcore](https://github.com/bitpay/bitcore)
|
|
- [Cryptocoin](https://github.com/cryptocoinjs/cryptocoin)
|
|
|
|
|
|
## LICENSE [MIT](LICENSE)
|