blockchain signatures

Blockchain signatures are a cryptographic method used to verify the authenticity of transactions on a blockchain. When a person initiates a transaction, they create a unique digital signature using their private key, which is a secure code only they possess. This signature confirms that the transaction is genuinely from the owner and hasn't been altered. Other users can verify this signature with the corresponding public key, ensuring trust and security within the network. This mechanism prevents fraud and unauthorized changes, making blockchain technology reliable for cryptocurrencies and various digital applications.