polymarket-nonce-guard
Unverified ML strategy on Multi by TheOneWhoBurns. BotFinder score 18 out of 100.
Detect and defend against the nonce race exploit on Polymarket's CTF Exchange
Source: github
BotFinder analysis pending.
polymarket-nonce-guard
Polymarket Nonce Guard 🛡️ Detect and defend against the nonce race exploit on Polymarket's CTF Exchange. The Exploit Exploiters on Polymarket call incrementNonce() on the CTF Exchange contract to invalidate their losing orders before the operator can settle them. This means: - They place bets on both sides of a market - When the outcome becomes clear, they cancel the losing side via incrementNonce() - The winning side settles normally → risk-free profit - You end up holding shares that were supposed to be matched but never settle ("ghost fills") First publicly disclosed Feb 19, 2026 by @itslirrato on X. Tools noncemonitor.py — Real-time incrementNonce watcher Polls Polygon blocks every 2s, filters for incrementNonce() calls (method sig 0x627cdcb9) to the CTF Exchange. Logs every event with timing relative to BTC 5-min market windows. Output: data/nonceevents.jsonl — append-only log of every detected call with caller address, tx hash, block, gas price, and market window timing. blacklist.py — Exploiter address database Loads known exploiter addresses from nonceevents.jsonl + a manual
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