Immutable

In the context of blockchain and cryptocurrencies, immutability is a critical feature that ensures the integrity and trustworthiness of the data recorded on the blockchain. Once a piece of information, such as a transaction or a block, is added to the blockchain, it becomes immutable and cannot be modified or deleted.

The immutability is achieved through cryptographic hashing, where each block contains a unique cryptographic hash based on the data of the previous block. If any information in a block is altered, it will result in a completely different hash. Since each subsequent block depends on the previous block's hash, any change would break the chain, making it evident that tampering occurred.

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