which model describes how data is written to blockchain
Answers
Answer:
Answer: Blockchains, especially the ones designed to host a currency, are using a transaction model.
Append Only model
Blockchain: A blockchain is defined as "a distributed database that maintains a continuously growing list of ordered records known as blocks," which are "linked using cryptography." Each block contains the previous block's cryptographic hash, a timestamp, and transaction data. A blockchain is a decentralized, distributed, and public digital ledger used to record transactions across many computers in such a way that the record cannot be changed retroactively without affecting all subsequent blocks and network consensus."
Append-only is a computer data storage property that allows new data to be appended to the storage while keeping existing data immutable. Because blockchain is append-only, data can only be added to the blockchain in time-ordered sequential order. This property implies that once data is added to the blockchain, it is nearly impossible to change and can be considered practically immutable.
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