{"service":"cassandra","endpoint":"/oracle","method":"POST","protocol":"x402","price":"$0.05","network":"eip155:196","markets":["BTC-4H","BTC-24H","ETH-4H","ETH-24H","SOL-4H","SOL-24H"],"how":"POST /oracle with {market} to buy a forecast. Unpaid POST returns HTTP 402 with the payment challenge; pay USDT on X Layer and the retry returns the forecast plus its proof URL. Every forecast is committed to the public chain before its outcome exists — see /record.","record":"/record"}