Using Bitcoin to transact is easy and accessible to everyone. Before you start using Bitcoin, there are a few things that you need to know in order to use it. Bitcoin (₿) is a cryptocurrency. It is a decentralized digital currency without a central bank or The symbol was encoded in Unicode version at position U +20BF ₿ BITCOIN SIGN in the Currency Symbols block in June ^ Compatible. Copay is a Bitcoin wallet by Bitpay and available on iOS, Android, Windows Phone, Linux, Max OS X, and Windows. Because Copay is available on multiple .