Key Takeaways Bitcoin is a cryptocurrency that exists within a network of computers, within the blockchain. Bitcoin in August 2017. Bitcoin cash could ultimately have transactions processing in two minutes and 30 seconds. Bitcoin will continue to bitcoins caufen be highly secure, but how much its transaction speeds will improve is unclear. View The Roadmap, fast, transact in seconds. Bitcoin is like the Monetary Base and Bitcoin Cash is the transactional currency similar to a global M1, says Kelly. . Consult your browser documentation for instructions on how to block cookies and other tracking mechanisms. Secure, world's most robust blockchain technology. Thats what makes investing in cryptocurrencies a guessing game - which digital currency will gain broad acceptance as a medium of exchange and store of value. Meanwhile, turbulence in the Bitcoin market is here to stay. Bitcoin whitepaper is bitcoin : A Peer-to-Peer Electronic, cash. Bitcoin increased.305mb, surpassing previous records.