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Permanent Block Finality

Definition

Permanent block finality means that once a block of transactions is added to a blockchain, it is irreversibly settled and cannot be altered or removed. This provides an absolute guarantee that transactions included in that block are confirmed and will remain part of the ledger forever. Different blockchain protocols achieve finality through various consensus mechanisms, some offering immediate finality, others probabilistic finality that strengthens over time. It is a critical property for trust and integrity.