A pure, powerful core for your bitcoin project.
Bitcore is a complete, native interface to the Bitcoin network, and provides the core functionality needed to develop apps for bitcoin.
#Principles Bitcoin is a powerful new peer-to-peer platform for the next generation of financial technology. The decentralized nature of the Bitcoin network allows for highly resilient bitcoin infrastructure, and the developer community needs reliable, open-source tools to implement bitcoin apps and services.
Bitcore unchains developers from fallible, centralized APIs, and provides the tools to interact with the real Bitcoin network.
#Get Started
Bitcore runs on node, and can be installed via npm:
npm install bitcore
It is a collection of objects useful to bitcoin applications; class-like idioms are enabled via Classtool. In most cases, a developer will require the object's class directly:
var Address = require('bitcore/Address').class();
#Examples
Some examples are provided at the examples path. Here are some snippets:
Validating a Bitcoin address:
var Address = require('bitcore/Address').class();
var addrStrings = [
"1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa",
"1A1zP1eP5QGefi2DMPTfTL5SLmv7Dixxxx",
"A1zP1eP5QGefi2DMPTfTL5SLmv7Dixxxx",
"1600 Pennsylvania Ave NW",
].map(function(addr) {
return new Address(addr);
});
addrStrings.forEach(function(addr) {
try {
addr.validate();
console.log(addr.data + ": is valid");
} catch(e) {
console.log(addr.data + ": is not a valid address. " + e);
}
});For this example you need a running bitcoind instance with RPC enabled.
var util = require('util');
var networks = require('bitcore/networks');
var Peer = require('bitcore/Peer').class();
var PeerManager = require('bitcore/PeerManager').createClass({
network: networks.testnet
});
var handleBlock = function(info) {
console.log('** Block Received **');
console.log(info.message);
};
var handleTx = function(info) {
var tx = info.message.tx.getStandardizedObject();
console.log('** Block TX **');
console.log(tx);
};
var handleInv = function(info) {
console.log('** Block Inv **');
console.log(info.message);
var invs = info.message.invs;
info.conn.sendGetData(invs);
};
var peerman = new PeerManager();
peerman.addPeer( new Peer('127.0.0.1', 18333) );
peerman.on('connection', function(conn) {
conn.on('inv', handleInv);
conn.on('block', handleBlock);
conn.on('tx', handleTx);
});
peerman.start();PeerManager will emit the following events: 'version', 'verack', 'addr', 'getaddr', 'error' 'disconnect'; and will relay events like: 'tx', 'block', 'inv'. Please see PeerManager.js, Peer.js and Connection.js
For this example you need a running bitcoind instance with RPC enabled.
var networks = require('bitcore/networks');
var Peer = require('bitcore/Peer').class();
var Transaction = require('bitcore/Transaction').class();
var Address = require('bitcore/Address').class();
var Script = require('bitcore/Script').class();
var coinUtil = require('bitcore/util/util');
var PeerManager = require('bitcore/PeerManager').createClass({
network: networks.testnet
});
var createTx = function() {
var TXIN = 'd05f35e0bbc495f6dcab03e599c8f5e32a07cdb4bc76964de201d06a2a7d8265';
var TXIN_N = 0;
var ADDR = 'muHct3YZ9Nd5Pq7uLYYhXRAxeW4EnpcaLz';
var VAL = '1.234';
var txobj = {
version: 1,
lock_time: 0,
ins: [],
outs: []
}
var txin = {
s: coinUtil.EMPTY_BUFFER, // Add signature
q: 0xffffffff
};
var hash = new Buffer(TXIN.split('').reverse(), 'hex');
var vout = parseInt(TXIN_N);
var voutBuf = new Buffer(4);
voutBuf.writeUInt32LE(vout, 0);
txin.o = Buffer.concat([hash, voutBuf]);
txobj.ins.push(txin);
var addr = new Address(ADDR);
var script = Script.createPubKeyHashOut(addr.payload());
var valueNum = coinUtil.parseValue(VAL);
var value = coinUtil.bigIntToValue(valueNum);
var txout = {
v: value,
s: script.getBuffer(),
};
txobj.outs.push(txout);
return new Transaction(txobj);
};
var peerman = new PeerManager();
peerman.addPeer(new Peer('127.0.0.1', 18333));
peerman.on('connect', function(conn) {
var conn = peerman.getActiveConnection();
if (conn) {
conn.sendTx(createTx());
}
conn.on('reject', function () {
console.log('Transaction Rejected');
});
});
peerman.start();For this example you need a running bitcoind instance with RPC enabled.
var util = require('util');
var RpcClient = require('bitcore/RpcClient').class();
var hash = process.argv[2] || '0000000000b6288775bbd326bedf324ca8717a15191da58391535408205aada4';
var config = {
protocol: 'http',
user: 'user',
pass: 'pass',
host: '127.0.0.1',
port: '18332',
};
var rpc = new RpcClient(config);
rpc.getBlock(hash, function(err, ret) {
if(err) {
console.error("An error occured fetching block", hash);
console.error(err);
return;
}
console.log(ret);
});Check the list of all supported RPC call at RpcClient.js
Gets an address strings from a ScriptPubKey Buffer
var Address = require('bitcore/Address').class();
var coinUtil= require('bitcore/util/util');
var getAddrStr = function(s) {
var addrStrs = [];
var type = s.classify();
var addr;
switch (type) {
case Script.TX_PUBKEY:
var chunk = s.captureOne();
addr = new Address(network.addressPubkey, coinUtil.sha256ripe160(chunk));
addrStrs.push(addr.toString());
break;
case Script.TX_PUBKEYHASH:
addr = new Address(network.addressPubkey, s.captureOne());
addrStrs.push(addr.toString());
break;
case Script.TX_SCRIPTHASH:
addr = new Address(network.addressScript, s.captureOne());
addrStrs.push(addr.toString());
break;
case Script.TX_MULTISIG:
var chunks = s.capture();
chunks.forEach(function(chunk) {
var a = new Address(network.addressPubkey, coinUtil.sha256ripe160(chunk));
addrStrs.push(a.toString());
});
break;
case Script.TX_UNKNOWN:
break;
}
return addrStrs;
};
var s = new Script(scriptBuffer);
console.log(getAddrStr(s);
#Security Please use at your own risk.
Bitcore is still under heavy development and not quite ready for "drop-in" production use. If you find a security issue, please email [email protected].
#Contributing Bitcore needs some developer love. Please send pull requests for bug fixes, code optimization, and ideas for improvement.
#Browser support Work to enable Bitcore for use in the browser is ongoing. To build bitcore for the browser:
npm install -g grunt-cli
grunt browserify
You can check a usage example at examples/example.html
#License
Code released under the MIT license.
Copyright 2013-2014 BitPay, Inc. Bitcore is a trademark maintained by BitPay, Inc.
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