This repository was archived by the owner on Dec 5, 2024. It is now read-only.
This repository was archived by the owner on Dec 5, 2024. It is now read-only.
Fork choice rule with attestations #1194
Description
Abstract
Update fork choice rule with IMD GHOST algorithm.
Proposed implementation
New ScoreFunction should be implemented that uses IMD GHOST algorithm combined with finality.
Beacon chain fork choice rule is outlined in the spec.
IMD GHOST is well described by following posts:
- https://ethresear.ch/t/immediate-message-driven-ghost-as-ffg-fork-choice-rule/2561
- https://ethresear.ch/t/beacon-chain-casper-ffg-rpj-mini-spec/2760
As finality is not yet implemented, there is a suggestion to use block with a highest slot number that satisfies condition <= head.slotNumber - CYCLE_LENGTH as highestSlotNumberJustifiedBlock