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Blockchain meaning

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What does Blockchain mean?
In legal practice, blockchain describes a form of distributed ledger technology (DLT) that records and verifies time‑stamped data in linked “blocks” replicated across many networked computers (nodes), without a single central database. Each new block is validated by a consensus mechanism and appended to the chain, creating an auditable, tamper‑resistant record. Across England & Wales, Scotland and Northern Ireland, “blockchain” is a descriptive, non‑statutory term used in regulatory and judicial commentary; UK regulation more often refers to DLT and cryptoassets. In Ireland (as an EU Member State), the Markets in Crypto‑Assets Regulation (MiCA) defines DLT for regulatory purposes; usage otherwise aligns across the jurisdictions. Key legal features include replication of the ledger on nodes, time‑stamping, and the use of cryptography (including hashing) to secure integrity and authenticity. Entries are practically immutable, though not necessarily confidential: permissionless blockchains are typically public, while permissioned systems restrict access. Typical uses include cryptoassets and tokenisation, smart contracts, provenance and registries, and electronic trade documents. Legal significance spans property and title, contractual enforceability, evidence and disclosure, data protection (UK GDPR/Irish GDPR), confidentiality, consumer and financial regulation, AML/CTF, and governance and risk allocation.
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