{"resource":"https://preflight402.com/v1/btc/tx-context","service":"Preflight","areas":["travel","onchain_reads"],"answering":true,"http_status":402,"latency_ms":841,"price_usdc":0.1,"buyers_30d":1,"calls_30d":1,"description":"Call before signing a Bitcoin transaction when you need chain context for its inputs: whether each prevout exists, whether it is already spent, its value in sats and its confirmations. Resolves up to 10 inputs against a public explorer at a","id":"7d8911d060a9","category":"Blockchain reads","accuracy":null,"tool_calls":null,"checked_day":"2026-10-11","page":"https://velliumandco.com/sellers/7d8911d060a9"}