Block finality in Solana refers to the concept of when a block in the Solana blockchain network is considered irreversible or finalized. In Solana, block finality is achieved through a process called Proof of History (PoH) combined with Proof of Stake (PoS) consensus mechanism. Once a block is confirmed by validators and added to the blockchain, it is considered final and cannot be changed or reversed. This ensures the security and immutability of transactions on the Solana network.
