Firstly, a transaction must occur, and be verified within a network of nodes by miners. Then, the information attached to the transaction, including its date, time, dollar amount and participants must be stored in a block. There are several other transactions making up this block, usually any requests to transfer Bitcoin cryptocurrency over a 10-minute period are bundled together in a block. Each block is filled with new transactions until it’s full, then added to the end of the chain. Any overflowing transactions are added to the next block, and the process continues.