OathLock

Problem Statement

OathLock reveals onchain reputation of past eCommerce transaction as past payment with dispute, that were going through this excrow contract, were stored into EAS: Ethereum Attestation Service.OathLock also has builtin seller aligned incentive design for dispute resolving, which results in good person takes good financial benefit in long term.What it solves Global e-commerce is ~$5T in 2025 (≈+12% YoY) and projected to surpass $7T by 2030, yet ~$500B is lost annually to counterfeit and fraud—especially in fashion, cosmetics, and electronics. OathLock reduces these losses by making reputation an enforceable, portable primitive: sellers and buyers accumulate negative-only attestations that cannot be gamed with fake positives.How it works at a glance.Buyer opens an Oath (seller, expiry) and deposits USDC. Past attestations are visible before committing.Seller verifies the Oath and buyer's past attestations also, ships, and commits a tracking hash (deadline-gated).Buyer inspects on arrival: Approve -> immediate release to seller (even before expiry) Dispute (non-delivery/counterfeit with evidence URL) -> no refund, but a negative attestation is recordedX) At expiry: Anyone can call settle(id) to guarantee liveness. not shipped -> refund to buyer; shipped -> full payment to seller.This design removes the free-riding incentive for malicious buyers while crowd-sourcing high-signal evidence against bad sellers. When a seller’s fraud is confirmed by accumulated attestations, harmed buyers receive an information-provider reward—prioritizing prevention of future damage while keeping settlement rules simple and predictable.

Solution

Contracts & TokensOathLockEAS.sol (EVM) — escrow state machine: createOath(), sellerShip(), buyerApprove(), buyerDispute(), settle().USDC (ERC-20) as the settlement asset; amounts locked/released by contract rules.Attestations & ReputationIntegrates EAS (Ethereum Attestation Service) for immutable negative-only reviews and dispute tags (e.g., NON_DELIVERY, COUNTERFEIT, ABUSE).Both sides accrue histories (buyers’ dispute habits are also visible), enabling markets to price trust over time.Emits a full audit trail: OathCreated, SellerShipped, BuyerApproved, BuyerDisputed, SettledToSeller, RefundedToBuyer, Expired.Chains and limitationsFlow EVM (mainnet/testnet) with EAS integrationsZircuit mainnet with no EAS integration, but expecting their scam transaction takedowm feature.Extensiblility Rolling reserves, AI risk scoring, community arbitration (ERC-792/Kleros), automation for time-based settlement, cross-chain flows, and AVS-style watchers slot in without changing the MVP’s core.Notable hacks / choicesOne-shot dispute before deadline to prevent spam and last-minute griefing.Negative-only scoring to avoid review-gaming; quantity + tags > easily faked positives.