Bitcoin is a peer-to-peer Internet currency that enables instant payments to anyone in the world.
Hashrate - This is a measure of how quickly your hardware can do the work of Bitcoin mining. You can find out the expected hashrate of your hardware from your manufacturer or product documentation. Hashrates in this calculator are expressed in Gigahashes per second (Gh/s) each of which equals 1,000,000,000 hashes per second. Terahashes (1,000,000,000,000) and Petahashes (1,000,000,000,000,000) are commonly used to describe larger Bitcoin mining rigs and the total network hashrate respectively.