Immutability is a defining characteristic of blockchain technology. Once a transaction is recorded on the blockchain, it becomes an unchangeable part of the ledger. This property is achieved through cryptographic hashing and consensus algorithms, which work together to secure the integrity of the data. Each block is linked to the previous one through its hash, creating a continuous and unbreakable chain. Consequently, any attempt to alter a block would require recalculating the hashes of all subsequent blocks, necessitating an overwhelming amount of computational power.
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