On transparent prediction markets like Polymarket, every large trade is visible on-chain the moment it's submitted. Front-running bots detect whale orders within seconds, copy-traders pile in, and the price moves before the original order fills. A $50,000 position can easily lose $4,000+ to slippage and information leakage.
Dark pools solve this in traditional finance — $4.5 trillion per day flows through equities dark pools, roughly 40% of all US equity volume. Prediction markets have zero privacy infrastructure today.
Phantom Pool lets traders execute large prediction market positions without revealing order size or direction on-chain.
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Commit-Reveal Orders — Traders submit a salted hash on-chain. No size, no direction, no limit price — just an opaque commitment. Details are only revealed after a counterparty is found.
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Off-Chain Matching — A price-time priority engine pairs buyers and sellers privately. Matched pairs settle atomically through conditional escrows. Zero MEV exposure.
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Iceberg Execution — Unmatched residuals are split into small, randomly-timed slices and drip-fed to the open market. Configurable slice size and timing jitter prevent pattern detection.
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AI News Agent — An LLM-powered agent monitors real-time news, calculates predictive edge against current market prices, and routes high-confidence trades through the dark pool first — capturing alpha before the market reacts.
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Cross-Venue Arbitrage — Compares prices between Polymarket and Gemini Prediction Markets in real-time, flagging mispricings and routing arbitrage trades privately.
- Commit-reveal protocol prevents front-running — only a hash is visible on-chain until settlement
- Price-time priority matching pairs counterparties off-chain with zero information leakage
- Atomic settlement through Alkahest conditional escrows on Polygon
- Iceberg orders split large positions into small, jittered slices to mask true order size
- Monitors news feeds in real-time via NewsAPI
- LLM analysis scores each headline for market impact, confidence, and edge
- Generates actionable trade signals with affected market identification
- Routes profitable trades through the dark pool before the open market reacts
- All decisions stored on Filecoin for verifiable, CID-backed reputation
- Real-time price comparison between Polymarket and Gemini Prediction Markets
- Flags arbitrage opportunities when the same event trades at different prices across venues
- Routes arbitrage trades through the dark pool to capture spreads privately
- Any AI agent can access the dark pool by paying a micropayment per order — no API keys, no subscriptions
- HTTP 402 Payment Required flow with on-chain verification on both Solana and TRON
- Fully autonomous agent-to-agent commerce
- Polygon — Alkahest conditional escrow arbiter
- Solana — Anchor program with PDA-based order storage and SPL token escrow
- TRON — USDT settlement with x402-style micropayments on Nile testnet
Five-tab terminal-style interface:
| Tab | Description |
|---|---|
| Home | Browse live prediction markets from Polymarket and Gemini with real-time price tickers |
| Dashboard | Iceberg engine visualization, settlement animations, execution log, order depth chart |
| Trade | 4-step order wizard — configure, iceberg parameters, commit hash, reveal and settle |
| Agent | AI agent reputation, live news signal feed, cross-venue arbitrage tracker |
| TRON | x402 payment flow — trader submits order, pays micropayment, market maker earns fees |
| Layer | Technology |
|---|---|
| Frontend | Next.js 15, React 19, TypeScript |
| Backend | Node.js, Express, TypeScript, ethers.js v6, WebSocket |
| Smart Contracts | Solidity 0.8.20 (Hardhat), Anchor 0.32 (Solana), TronIDE |
| AI | OpenRouter GPT-4o-mini — news analysis and intent extraction |
| Storage | Filecoin via Synapse SDK — agent memory and verifiable reputation |
| Bot | grammy.js (Telegram) with NLP order flow |
git clone https://github.com/weitaosu/penn_hackathon.git
cd penn_hackathon
# Backend
cd backend && npm install && npm run dev # starts on :3001
# Frontend (separate terminal)
cd frontend && npm install && npm run dev # starts on :3000
# Telegram bot (separate terminal)
cd bot && npm install && npm run dev| Method | Path | Description |
|---|---|---|
| POST | /api/orders/submit |
Submit a dark pool order |
| POST | /api/orders/reveal |
Reveal a committed order |
| GET | /api/orders/:id |
Order status and match info |
| GET | /api/markets |
Browse Polymarket markets |
| GET | /api/gemini/events |
Gemini prediction market events |
| GET | /api/gemini/cross-venue |
Cross-venue arbitrage opportunities |
| GET | /api/news/signals |
AI agent trade signals |
| GET | /api/agent/reputation |
Filecoin-backed agent reputation |
| POST | /api/solana/orders/submit |
x402-gated order submission (Solana) |
| POST | /api/tron/orders/submit |
x402-gated order submission (TRON) |
| WS | /ws |
Real-time order events |
Built at University of Pennsylvania Blockchain Hackathon '26