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About finality

About finality at stage Bitlayer PoS (Bitlayer Mainnet-V1)​

In this initial phase, Bitlayer adopts the best security model: PoS + Multisig, working with multiple MPC custody platforms, ultilizing 100% EVM-Compatible environment to onboard users and developers.

At this stage, there're up to 21 canonical validators are reponsible for proposing blocks and maintaining the blockchain, the consensus is like clique in go-ethereum, but with System contracts to deal with staking and validator managements.

At this stage, Bitlayer adopts the longest chain strategy (AKA the largest total difficulty strategy) to select the cononical chain if there are multi-branch at a height. So, the latest few blocks may be reorg.

For finality at Bitlayer PoS stage:

  • In theory, It's absolutely safe with 21 blocks confirmations;
  • In practice, It's safe for most cases with 5 blocks confirmations, and very high probability safe with 15 blocks confirmations.