What is a digital signature in cryptocurrency?

A digital signature in cryptocurrency is a cryptographic mechanism that confirms the authenticity and integrity of transactions. It is used to ensure that the sender of the transaction is who they claim to be, as well as to prevent data from being altered during transmission. The signature is created using the private key of the cryptocurrency wallet owner and can be verified by any participant in the network using the public key. It is an important element of security that provides trust and transparency in cryptocurrency systems.