Optimize Oracle Interaction Fees and Gas Costs for adpools

[BrosG]

To design a system where the influencer indirectly covers the gas fees for oracle interactions during the rewards claim process, while keeping the participant validation process advertiser-driven, here are the adjusted specifications:

Transaction Type	Method Used	Gas Fee Payer	Oracle Fee Payment	Description
Campaign Creation	On-chain Transaction	Advertiser	N/A	The advertiser initiates the campaign on the blockchain via an on-chain transaction, incurring gas fees paid by the advertiser.
Campaign Participation	Off-chain Signature	None (off-chain action)	N/A	Participants express their intent to participate through an off-chain signature, without direct gas fees.
Participation Validation	Off-chain Signature by Advertiser	None (off-chain action)	Advertiser (for validation)	The advertiser validates participants off-chain by reviewing and approving their submissions. No gas fees are incurred for this action.
Rewards Claim	On-chain Transaction + Included Oracle Fees	Influencer	Influencer (via rewards claim)	Participants claim their rewards through an on-chain transaction, which also includes oracle fees. These fees are indirectly covered by the claimed rewards amount.
Oracle Interaction	Off-chain Validation; On-chain Update if Necessary	Influencer (indirectly)	Influencer (indirectly via claim)	While oracle data collection occurs off-chain, validation of participations or other campaign information may sometimes require an on-chain update, with fees indirectly covered by the influencer during the rewards claim process.

Oracle Fee Payment Mechanism

• Rewards Claim: When an influencer claims their rewards, the contract automatically deducts a portion of the rewards to cover the necessary oracle fees for participation validation or campaign results verification. This deduction is calculated based on pre-established rates or the costs of interacting with the oracle.

Simplified Example of a Rewards Claim Function:

function claimRewards(bytes32 campaignId) public {
    require(participationApproved[campaignId][msg.sender], "Participation not approved.");
    require(!rewardsClaimed[campaignId][msg.sender], "Rewards already claimed.");

    uint256 rewardAmount = rewards[campaignId][msg.sender];
    uint256 oracleFee = getOracleFee(campaignId); // Calculate or retrieve pre-established oracle fees

    require(rewardAmount > oracleFee, "Reward amount does not cover oracle fees.");

    uint256 netReward = rewardAmount - oracleFee;
    rewardsClaimed[campaignId][msg.sender] = true;

    // Ensure logic to transfer the net amount to the influencer
    // and oracle fees to the oracle's address or contract
    rewardsToken.transfer(msg.sender, netReward);
    rewardsToken.transfer(oracleAddress, oracleFee);

    emit RewardClaimed(msg.sender, campaignId, netReward);
}

Conclusion

In this model, participants (influencers) indirectly pay for oracle interactions by deducting the necessary fees from their claimed rewards. This approach minimizes direct gas costs for participants while ensuring essential activities, such as participant validation and rewards distribution, are properly funded and executed on the blockchain.