Leitura rápida
Comece pela explicação mais curta e útil antes de aprofundar.
The guarantee that a confirmed transaction is irreversible and cannot be altered. Probabilistic finality (Bitcoin) means reversal becomes exponentially unlikely over time. Deterministic finality (Solana finalized, Tendermint) provides absolute guarantees after a protocol-defined threshold. Finality time ranges from seconds (Solana) to ~60 minutes (Bitcoin, 6 confirmations).