Blockchain is open-source technology which offers an alternative to the traditional intermediary for transfers of the crypto-currency Bitcoin.
The intermediary is replaced by the collective verification of the ecosystem offering a huge degree of traceability, security and speed.
A blockchain is a decentralized ledger of all transactions across a peer-to-peer network. Using this technology, participants can confirm transactions without a need for a central clearing authority.
Potential applications can include fund transfers, settling trades, voting and many other issues.