A signature in cryptocurrency refers to the cryptographic method used to verify the authenticity of transactions. It ensures that the person initiating a transaction is indeed the owner of the funds and has authorized the transfer.When a user wants to send cryptocurrency, their wallet software creates a signature using their private key. This private key is a secret piece of data that only the owner has, while the corresponding public key can be shared with others. The signature is generated from the transaction details and the private key, creating a unique string of information.Once the transaction is broadcast to the network, other participants can use the sender’s public key to verify the signature. If the signature is valid, it confirms that the sender is legitimate and that the transaction has not been tampered with. This process adds a layer of security and trust, allowing peer-to-peer transactions without the need for intermediaries. Signatures are essential for maintaining integrity and security in blockchain technology, enabling users to transact with confidence.