REChain ® PerpStats — API Documentation GET /api/perp/volume Returns trading volume per market. GET /api/perp/open-interest Returns open interest stats across all perpetuals. GET /api/perp/funding-rates Returns funding rates and history. GET /api/perp/liquidations List of recent liquidations with size, price, and timestamp. GET /api/perp/traders/top Leaderboard of most profitable or active traders.