How Does the “Finality” Concept in Other Blockchains Differ from Bitcoin’s Confirmation Process?

Bitcoin achieves probabilistic finality, meaning the chance of a transaction being reversed decreases exponentially with each new block. Other blockchains, particularly those using Proof-of-Stake, often employ mechanisms that offer "absolute finality" after a certain period or checkpoint.

Absolute finality means the transaction is cryptographically guaranteed to be irreversible without a coordinated attack on the protocol.