Transaction protocol refers to the rules and procedures that govern the process of executing transactions on a blockchain. These protocols ensure that transactions are secure, valid, and efficiently recorded.When a user initiates a transaction, the protocol dictates how that transaction is formed, validated, and added to the blockchain. This typically involves specifying details such as sender and receiver addresses, the amount being transferred, and cryptographic signatures to authorize the transaction.Consensus mechanisms, which are part of transaction protocols, determine how network participants agree on the validity of transactions. Common mechanisms include Proof of Work and Proof of Stake, each having its own methods for reaching consensus among nodes in the network.Once a transaction is validated, it is bundled into a block along with other transactions before being added to the blockchain. This process helps maintain a secure and chronological record of all transactions, preventing issues like double-spending.Overall, transaction protocols are essential for ensuring the integrity, security, and efficiency of transactions in a decentralized network.