ChainLex — RWA Compliance Oracle

ChainLex is an AI-driven RWA (Real World Asset) compliance platform. Our hackathon deliverable, LexOracle Risk Guard, is a Chainlink CRE workflow that provides DON-attested compliance data for tokenized assets — functioning as a "Compliance Feed" with the same trust model as Chainlink Price Feeds.

Problem: Third-party protocols (e.g. vaults accepting RWA token deposits) cannot trust compliance data self-reported by token issuers — regulators flag this as a conflict of interest. They need independently verifiable, DON-attested data.

Solution: The CRE workflow (1) listens for on-chain Transfer events or runs on a cron, (2) fetches wallet risk data from GoPlus Security API, (3) aggregates results via DON BFT consensus, (4) writes to ChainlinkRisk on Sepolia. A deployed ComplianceVault contract gates deposits by calling ChainlinkRisk.isUserAllowed() — the vault trusts the DON, not the issuer.

We integrate blockchain (Sepolia) with an external API (GoPlus), demonstrate successful simulation via CRE CLI, and have broadcast real Sepolia transactions.

Stack:

• CRE Workflow: Go/WASM, dual triggers (Cron + EVM Log for Transfer events)
• Data source: GoPlus Security API (public, no auth) for address risk flags
• Smart contracts: Solidity 0.8.29 — ChainlinkRisk (Compliance Feed), LexOracleConsumer (IReceiver with 3-layer DON verification), uRWA (ERC-7943 token), ComplianceVault (third-party consumer)
• Frontend: Next.js 15, React, Tailwind, shadcn/ui — LexOracle Dashboard showing real-time event feed, pipeline, and vault gate
• Deployment: Foundry for contracts on Sepolia; CRE simulate + broadcast for on-chain proof

Architecture:
GoPlus API → CRE DON (BFT consensus) → LexOracleConsumer.onReport() → ChainlinkRisk.updateRiskAssessment()
ChainlinkRisk ← ComplianceVault.checkCompliance() (third-party gate)