Blockchain was purposely designed as a decentralized technology so it could use a global network of computers to manage the database that stores Bitcoin transactions. This is the same as saying that it operates as a P2P (peer-to-peer) network, but every peer (the same as user or node) is also an administrator of the blockchain. Unlike traditional P2P sharing files tools that we know, each node is "mining", or competing to win Bitcoins by solving computational puzzles. That wa