Which model describes how data is written to a blockchain?

  Which model describes how data is written to a blockchain?

 Which model describes how data is written to a blockchain? 

A. rewrite always

 B.append only 

C.append never 

D.full read and write 

The correct answer is:

B. append only

The model that describes how data is written to a blockchain is "append only." In a blockchain, once a block of data is added to the chain, it is typically considered immutable and cannot be altered or removed. New data is added to the blockchain by appending it as a new block. This ensures the integrity and chronological order of the data stored on the blockchain.

The append-only nature of a blockchain provides a transparent and auditable record of transactions or information. It allows participants in the blockchain network to verify the history of data and prevents unauthorized modifications. This property is a fundamental aspect of the security and trustworthiness of blockchain technology.