The symbol was encoded in Unicode version 10. Currency Symbols block stefbot bitcoin wiki June 2017.
Without proper rendering support, you may see question marks, boxes, or other symbols. It is the first decentralized digital currency: the system works without a central bank or single administrator. Bitcoins are sent from user to user on the peer-to-peer Bitcoin network directly, without the need for intermediaries. These transactions are verified by network nodes through cryptography and recorded in a public distributed ledger called a blockchain. Bitcoins are created as a reward for a process known as mining. They can be exchanged for other currencies, products, and services. Research produced by the University of Cambridge estimates that in 2017, there were 2.
8 million unique users using a cryptocurrency wallet, most of them using bitcoin. The word bitcoin was first used and defined in a white paper published on 31 October 2008. There is no uniform convention for bitcoin capitalization. Some sources use Bitcoin, capitalized, to refer to the technology and network and bitcoin, lowercase, to refer to the unit of account.