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A reimplementation of Bitcoin using Node.js and web technologies.

It currently implements the basics of the Bitcoin protocol, enough to send and receive transactions via the Webcoin frontend. All official BitcoinJS components are released under the MIT license.


BitcoinJS consists of several loosely coupled component that can be used in different combinations to solve different problems.


The main component implementing the Bitcoin P2P protocol and parts of the JSON-RPC API. You can think of it as the counterpart to the original client's CLI daemon, bitcoind.

As the name implies, node-bitcoin-p2p is built using the Node.js framework. It also uses MongoDB for storage and indexing of the block chain data.


Builds on top of node-bitcoin-p2p to provide access to balances and transaction information on a per-account basis. It also allows the upload of new transactions to the network. These two functions are enough to allow a client to access the network only through this server.


Various other software builds on top of the basic BitcoinJS infrastructure. Notable examples include Webcoin and BitcoinJS Explorer.


  • First commit was uploaded on March 12th, 2011
  • Repository moved to separate BitcoinJS account on April 30th, 2011
  • Official announcement including screencast on May 5th, 2011

See Also on BitcoinWiki[edit]

External Links[edit]