Blockchain employs a one-way hashing algorithm, and every newly generated block advances strictly in chronological order. The irreversibility of time ensures that any attempt to tamper with the data on the blockchain can be easily traced and rejected by other nodes, effectively preventing malicious actions.
For example, when you use imToken to initiate a transaction and accidentally enter the wrong address, the transaction cannot be reversed. The only way to resolve this is for both parties to negotiate off-chain. imToken cannot alter the transaction.