Darwinia <> Ethereum Bridge Upgrade CheckList

[hackfisher]

• [x] Introduce the message layer for Darwinia <> Ethereum. The message inbound and outbound channel. LockAssetEvents in Backing Module should be refactored to represent as messages in Darwinia Message Outbound Channel. cc @hujw77 @AurevoirXavier .
  • [x] https://github.com/darwinia-network/darwinia-common/issues/627 and Backing & Issuing might be better to move to (wormhole)token protocol related folders.
  • [x] Ethereum smart contracts for message layer. https://github.com/darwinia-network/darwinia-bridge-sol/issues/76 cc @hujw77
• [ ] Replace MMR pallet with parity's https://github.com/darwinia-network/darwinia-common/pull/743 and support pruning(for sure), and update the MMR Leaf spec https://github.com/darwinia-network/darwinia-common/issues/665 cc @AurevoirXavier @hujw77
  • [ ] message root part in mmr leaf also related to the optimization of gas fee in Ethereum part
  • [ ] BEEFY integration https://github.com/paritytech/substrate/pull/9833, https://github.com/darwinia-network/darwinia-common/pull/746 @AurevoirXavier
  • [ ] Custom commitment and MessageRoot in BEEFY @AurevoirXavier
• [x] Adding truth layer in Darwinia > Ethereum by introducing Beefy https://github.com/darwinia-network/darwinia-common/pull/746 @hujw77 @AurevoirXavier
  • [x] Ethereum smart contracts for Beefy and Grandpa light client. cc @hujw77
  • [x] https://github.com/darwinia-network/darwinia-common/issues/755
• [x] Adding truth layer in BSC > Darwinia @hujw77 @xiaoch05
  • [x] BSC light client pallet
  • [x] BSC light client lane_data https://github.com/darwinia-network/darwinia-common/pull/988 @xiaoch05
• [x] Backing and Issuing upgrade
  • [x] Use new message layer and truth layer(light client) https://github.com/darwinia-network/darwinia-bridge-sol/pull/101 cc @xiaoch05 ,
  • [x] Solidity upgrade, remove permission from old contract, and use new contract.
• [x] Basic Relayer Incentive Support: Relayer Fee Market cc @xiaoch05 @hujw77
• [x] Companion Bridger Upgrade cc @furoxr
  • [ ] Interact with BEEFY protocol, (Darwinia header relay)
  • [ ] Interact with BSC light client pallet (BSC header relay)
  • [ ] Message relay
  • [ ] Interact with fee market
• [x] Companion wormhole Upgrade cc @1022ranji @sxlwar

[hackfisher]

• [x] Will relayer help user to deliver the message to Ethereum, originally require use to claim by themself.
• [ ] Support of deprecated tokens claiming in previous Darwinia > Ethereum bridge.

[AurevoirXavier]

Please update this.

cc @AsceticBear @HackFisher @xiaoch05

[hackfisher]

eth2 : https://github.com/darwinia-network/darwinia-messages-sol/pull/166

[AurevoirXavier]

https://github.com/darwinia-network/darwinia/discussions/843#discussioncomment-3079121