Digital Signature

A digital signature is a cryptographic technique used to verify the authenticity and integrity of a digital message or document. In the context of blockchain, digital signatures ensure that transactions are secure and cannot be altered or tampered with. Each user has a private key and a corresponding public key; the private key is used to sign the transaction, while the public key allows others to verify that the signature is valid and originated from the correct sender.

Digital signatures play a vital role in securing blockchain networks, as they allow for trustless transactions between parties without the need for intermediaries. This cryptographic technique ensures that only the rightful owner of a private key can authorize transactions, enhancing the security of decentralized systems.