BTC USD (Bitcoin / US Dollar) This is the most popular Bitcoin pair in the world. Bitcoin uses peer-to-peer technology to operate with no central authority or banks; managing transactions and the issuing of Bitcoins is carried out collectively by the network. Strong coin is a hybrid bitcoin wallet. Buy Bitcoins and have them delivered directly to your StrongCoin wallet. Don't risk your Bitcoins by leaving them on an exchange. Bitcoins held on the blockchain not on our server You control the private keys not us.