off-chain whitelist
bluzelle has paid $12k in fees to whitelist 7.5k users. this article proposes an scheme that can eliminate those fees. users are given messages signed by the contract owner that contain contract address along with user address. this signature is passed along with the transaction and can be verified on-chain and used for access control.
https://medium.com/@PhABC/off-chain-whitelist-with-on-chain-verification-for-ethereum-smart-contracts-1563ca4b8f11
bluzelle has paid $12k in fees to whitelist 7.5k users. this article proposes an scheme that can eliminate those fees. users are given messages signed by the contract owner that contain contract address along with user address. this signature is passed along with the transaction and can be verified on-chain and used for access control.
https://medium.com/@PhABC/off-chain-whitelist-with-on-chain-verification-for-ethereum-smart-contracts-1563ca4b8f11