Bitcoin:

It is an encrypted and decentralized digital system, also called alternative economic system, in 2008 in the Discussion List. The encryption is sent by a programmer, or a group, under the pseudonym Satoshi Nakamoto. Wikipedia
Currencies: Undrawn foreign currency denominated in any multiple of a satoshis
Administration: Decentralized;
Symbol: BTC, XBT, ₿ (U + 20BF,)
ISO 4217: XBT code
Programming language: C ++
More: https://g.co/kgs/LmSjEm