**[Polymarket to Upgrade Crypto Market Settlement Rules: Transition from Single Price Snapshot to Time-Weighted Average Price]** BlockBeats News, July 30 – Prediction market Polymarket announced a major adjustment to its crypto market settlement mechanism, effective August 7, to safeguard market integrity. Starting from 00:00 UTC on that day, affected markets will no longer settle based on a single price snapshot at a specific time but will instead adopt a time-weighted average price (TWAP). Different market durations will correspond to different TWAP windows: all 5-minute crypto markets will use a 30-second TWAP, 15-minute markets will use a 60-second TWAP, and 4-hour markets will also use a 60-second TWAP. Previously, the single snapshot settlement method was prone to price manipulation during periods of low liquidity. This change represents Polymarket's proactive effort to strengthen its market integrity system following increased regulatory scrutiny. To support this transition, Polymarket will inject $1 million in liquidity rewards into all affected markets throughout August. On the technical side, Chainlink TWAP testnet data streams are already available, while mainnet data streams and Polymarket's real-time data stream service will go live on August 4. At that time, developers will be able to access TWAP prices directly via Chainlink Data Streams or Polymarket's public WebSocket. [Original Link]