Educational Byte: What Is Transaction Finality in Crypto, and Why Does It Matter? | HackerNoon
Briefly

Most online transactions, both in fiat and crypto, undergo a complex process before finality. In traditional banking, reversibility is possible; however, cryptocurrencies aim for immutability.
Transaction finality in crypto is when a transaction is deemed permanent and irreversible. This guarantees that funds are with the intended recipient once the transaction reaches finality.
Deterministic finality offers irreversible confirmations through certain blockchain mechanisms. Proof-of-Stake networks usually employ deterministic finality, enhancing transaction security and user confidence.
Probabilistic finality indicates that a transaction's status improves over time. In Bitcoin, for example, each additional confirmation increases security but doesn't guarantee irreversibility right away.
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