# Altair: Beacon chain first fork transition

###### tags: `hard_fork_1`

Notes from a meeting with Terence and Preston on 2020/05/18

Branch: `hf1`

Primary paths exist in these packages
1.) beacon-chain/core/altair
2.) beacon-chain/state/state-altair

Document: https://github.com/ethereum/eth2.0-specs/blob/dev/specs/altair/fork.md

Goals:
- Review code in hf1
- Provide feedback to Terence
- Merge pieces to develop, if possible
- End to end testing of the fork transition
- Fuzz tests

Timeline:
- Early / optimistic MC testnet: End of June

Open questions:
- How can we reuse code without generics?