Staking Reward contract

[jaybuidl]

Options 1: same as V1

• Deploy the contract using MerkleRedeem.sol
• Make sure to commit the deployment artifact to both the pnk-merkle-drop repo and this repository.
• The court frontend can depend on the artifact from this repo to implement Claim PNK kleros-v2#265

In the long term pnk-merkle-drop should be migrated to Solidity 0.8, recent libraries and added as a package in this repo.

Option 2: contract + Sablier

• Snapshot contract
  • getRewards(user): to compute each PNK's staking duration since the last snapshot
  • snapshot()
• Sablier for distribution
  • option a) generate the airdrop data with a script, then upload to Sablier
  • option b) programatically create the aidrop with Sablier somehow

Requirements

• Possible to update the rewards computations
• Process to handle adjustments: ad-hoc computations and aidrop creation

[jaybuidl]

Update: we have proceeded with option 1, migrated the pnk-merkle-drop -> https://github.com/kleros/pnk-merkle-drop-v2