Bitcoin Big (6.5 cm) round

Bitcoin is a digital asset and a payment system invented by Satoshi Nakamoto. Released it as open-source software in 2009. We uses bitcoin as its unit of account. Bitcoin system first provided an opportunity for direct transfer ownership to another person via the Internet without the involvement of external guarantors, with the transfer of safe and reliable, no one can dispute it, there is no mandatory for the Commission operations, any transactions can be carried out for each of the parties free of charge.