OrderbookTrade

OrderbookTrade is infrastructure that gives any prediction market platform a Central Limit Order Book (CLOB) matching engine and Onchain Settlement Modular Infra — the same architecture used by institutional exchanges.

THE PROBLEM:
Most prediction markets run on AMMs, which suffer from high slippage, poor price discovery, and low capital efficiency.
Building a CLOB from scratch requires months of engineering. Most teams don't have that capacity.

THE SOLUTION:
OrderbookTrade provides this as a plug-and-play infrastructure service.
Platforms integrate via API and get: high-performance order matching (price-time priority), real-time order book depth, WebSocket feeds, and automated on-chain settlement.

CHAINLINK CRE INTEGRATION:
We use Chainlink CRE as the settlement orchestration layer.
When a prediction market resolves, a CRE Workflow:

1. Fetches the real-world outcome via HTTP Action (CoinGecko / external API)
2. Cross-references with Chainlink Data Feeds for verification
3. Triggers the on-chain settlement contract to distribute winnings
4. Cancels remaining open orders and returns funds This makes settlement trustless, verifiable, and fully automated — no manual resolution needed.

Matching Engine (Go):

• High-performance CLOB with price-time priority
• Redis for in-memory order book state (sub-millisecond latency)
• PostgreSQL for persistent trade history and position tracking
• REST + WebSocket API for real-time order book updates

Smart Contracts (Solidity):

• Settlement contract implementing IReceiver interface
• Receives CRE resolution signal via Chainlink Forwarder
• Distributes payouts to winning positions on-chain
• Deployed on Base Sepolia testnet

Chainlink CRE Workflow (Go SDK):

• Trigger: HTTP Capability (called by matching engine post-match)
• Step 1: HTTP Action → fetch market outcome from CoinGecko API
• Step 2: Chainlink Data Feed cross-verification
• Step 3: EVM Write → call settlement contract with verified outcome
• Simulated via CRE CLI

Frontend (React + TailwindCSS):

• Live order book UI with bids/asks and recent trades
• WebSocket connection to matching engine for real-time updates
• Demo at