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Immutable means unchangeable or permanent in the context of blockchain technology, ensuring that data recorded on the blockchain cannot be altered.

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.


The immutability of Bitcoin's blockchain


Blockchain and Technology
Crypto Basics
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