Bitcoin is a decentralized digital currency, without a central bank or single administrator, that can be sent from user to user on the peer-to-peer bitcoin network without the need for intermediaries.Ledger start: 3 January 2009 (12 years ago)Code repository: github.com/bitcoin/bitcoinCode: BTC, XBTOriginal author(s): Satoshi NakamotoInitial release: 0.1.0 / 9 January 2009 (12 years ago)Supply limit: ₿21,000,000Symbols: BTC, ฿, ₿