L1/L2 Reorg Handling

[bap2pecs]

@bap2pecs cloned issue babylonchain/optimism#9 on 2024-06-08:

Design Tasks

• research and evaluate the implication of reorgs and document resolutions

Eng Tasks

instead of skipping, we can let FP re-sign EOTS using a new nonce. this requires

• the L2 node network to submit a signal to the Babylon DA contract
• ACL is needed for such submission
• FP network monnitor such signal in the DA contract and re-sign
• changes in the current pub rand structure (i.e. instead of 1-1 mapping from block to PR, this willl be 1-N)
• look into L1OriginSelector (Mark suggested)

References

• Will L1 reorg cause L2 block hash change? ethereum-optimism/developers#459