Immutability

Definition ∞ Immutability refers to the characteristic of data or records remaining unalterable once recorded. In blockchain technology, this property ensures that transactions, once validated and added to the distributed ledger, cannot be changed, deleted, or reversed. Each new block cryptographically links to the previous one, creating a tamper-resistant chain where any modification would invalidate subsequent blocks and be detectable by the network. This fundamental attribute provides a high degree of data integrity and transparency, forming the basis of trust in many digital asset systems.
Context ∞ Immutability stands as a core principle frequently discussed in crypto news, underpinning the security and reliability claims of blockchain-based systems. While generally considered a strength, its absolute nature can present challenges in scenarios requiring data correction or regulatory compliance, such as the right to be forgotten. The ongoing discourse addresses how to balance the benefits of unchangeable records with the practical necessities of adaptable digital systems.