Overwrite Prevention refers to mechanisms that ensure the integrity and uniqueness of data within a blockchain. In this context, it protects critical information, such as transaction details, from being accidentally or maliciously replaced or altered.One common method of achieving this is through consensus protocols. These protocols require multiple network participants to validate and agree on the data before it becomes part of the blockchain. Once data is confirmed and added, it is extremely challenging to modify due to cryptographic hashing, which links blocks in a secure manner.Additionally, overwrite prevention can involve the use of smart contracts. These automated agreements execute predefined actions, ensuring that once conditions are met, the data recorded cannot be changed.Overall, these mechanisms help maintain trust and reliability in blockchain systems, ensuring that transactions and data remain accurate and secure over time.