Immutable Data Ledger

Definition ∞ An Immutable Data Ledger is a record-keeping system where once data is recorded, it cannot be altered, deleted, or tampered with. This characteristic ensures the integrity and permanence of all entries, providing an unchangeable history of transactions or events. Blockchain technology exemplifies this concept, where cryptographic links between blocks make past data practically irreversible. Such ledgers are foundational for trust and transparency in digital asset systems.
Context ∞ The immutability of blockchain ledgers is a core feature that underpins the security and trustworthiness of cryptocurrencies and other digital assets. This property is frequently highlighted in news regarding data integrity and auditing in decentralized systems. Ongoing discussions address how immutability intersects with data privacy regulations like GDPR, particularly concerning the “right to be forgotten,” posing challenges for certain blockchain applications.