How are cryptocurrency transactions tracked?

Cryptocurrency transactions are tracked on a public digital ledger known as a blockchain. Every transaction is logged and viewable to the public, though the identities of the users are anonymous. The blockchain records the amount of cryptocurrency being sent, who it is being sent to, and the time of the transaction. It also contains a cryptographically secure digital signature unique to each transaction. This signature is used to ensure that the cryptocurrency being transferred is actually yours, and not someone else’s.