Transactional integrity refers to the assurance that transactions are processed accurately and securely within a blockchain system. It ensures that once a transaction is recorded, it cannot be altered or deleted, maintaining a permanent and trustworthy record.This integrity is mainly achieved through cryptographic techniques and consensus mechanisms. Each transaction is hashed, creating a unique fingerprint. When added to the blockchain, it becomes part of a larger chain of data, where each block links to the previous one. Any attempt to change a transaction would require altering all subsequent blocks, which is prohibitively difficult.Moreover, consensus mechanisms, like Proof of Work or Proof of Stake, validate transactions through the agreement of network participants. This decentralized verification process reduces the risk of fraud or double-spending, enhancing trust among users.In summary, transactional integrity ensures that transactions are legitimate, secure, and permanent, fostering confidence in the system and enabling smooth operations.