Upon reconnection, a node downloads and verifies new blocks from other nodes to complete its local copy of the blockchain. An actual bitcoin transaction including the fee from a webbased cryptocurrency exchange to a hardware wallet. A bitcoin is defined by a sequence of digitally signed transactions that began with the bitcoin’s creation, as a block reward. The owner of a bitcoin transfers it by digitally signing it over to the next owner using a bitcoin transaction, much like endorsing a traditional bank check. A payee can examine each previous transaction to verify the chain of ownership. Although it is possible to handle bitcoins individually, it would be unwieldy to require a separate transaction for every bitcoin in a transaction.