A Bitcoin node is a computer that runs Bitcoin software, connects to other computers doing the same, and independently verifies every transaction and block against the network's rules. Together, these ...

A light client checks blockchain data using block headers and Merkle proofs instead of the full chain. How Bitcoin SPV and ...

Get the app from the App Store or Google Play, or scan the QR code on this page to send the download straight to your phone. Open the app and create a wallet Choose to create a new wallet. Your keys ...

Bitcoin explained: how the blockchain, private keys and mining work, who controls the network and why the price moves. 20,085,534 of 21M BTC exist today.