LiquidBridge

LiquidBridge solves the $12.7B liquidity gap in tokenized securities (RWA). Today, holders of tokens like BlackRock BUIDL or Ondo OUSG must wait 1-5 business days for redemption, and existing DEXs like Uniswap use x*y=k pricing that can push prices 5-20% away from the real Net Asset Value (NAV) — unacceptable for regulated securities.

LiquidBridge replaces x*y=k with NAV-Anchored Pricing: every trade is priced at the latest NAV from the Chainlink oracle, never deviating more than ±0.5%. The system includes:

1. NAV-Anchored AMM — price = NAV ± dynamic_fee (not pool reserves)
2. Dynamic Fee (0.05%–0.5%) — quadratic scaling incentivizes pool rebalancing
3. Automated Circuit Breaker — trading halts if reserves drop below 98% (via Chainlink Proof of Reserve)
4. On-Chain Compliance (KYC/AML) — every swap verified through Chainlink ACE
5. CRE Workflow Automation — NAV updates every 60 seconds via Chainlink DON with BFT consensus

Smart contracts deployed on Base Sepolia, 22 passing tests, full working frontend at liquidbridge.vercel.app.

Smart Contracts: Solidity 0.8.24 + Foundry + OpenZeppelin. Core contracts: LiquidBridgePool (NAV-anchored AMM engine), NAVOracle (48-point NAV history), CREReceiver (bridges CRE DON to on-chain), ComplianceVerifier (KYC whitelist), LiquidBridgeRouter (user entry point), LiquidBridgeFactory (pool registry).

Frontend: Next.js 16, React 19, TypeScript 5, TailwindCSS 4, wagmi v2, viem v2, RainbowKit v2, Recharts v3. Deployed on Vercel.

CRE Workflow: Built with @chainlink/cre-sdk. Cron trigger every 60s → HTTPClient fetches NAV with consensusMedianAggregation() BFT → EVMClient reads on-chain state → DON-signed report (ECDSA + keccak256) → writeReport() to CREReceiver → NAVOracle.updateNAV() → Pool bounds auto-update + circuit breaker check.

Chain: Base Sepolia testnet. Chainlink services used: CRE (Runtime Environment), NAVLink/Data Streams, Proof of Reserve, ACE/CCID, CCIP (architecture ready), Automation.