{"success":true,"data":{"id":"svc_btc_timestamp_01","slug":"btc-timestamp","name":"Bitcoin Timestamp (OpenTimestamps)","description":"Timestamp anything on Bitcoin with OpenTimestamps: send text, a SHA-256 hash or a URL and get a standard .ots proof (base64). Only a salted hash leaves our server. The public calendars anchor it in a Bitcoin block within hours; then btc-timestamp-verify returns the block and the complete proof, which anyone can check with the open-source ots tool. For contracts, AI outputs, datasets, invoices and web evidence.","category":"data","endpoint":"https://agentsvc.io/api/v1/proxy/btc-timestamp","price_usdc":0.005,"latency_p99_ms":5000,"input_schema":{"type":"object","properties":{"text":{"type":"string","description":"Content to timestamp (hashed with SHA-256)"},"hash":{"type":"string","description":"SHA-256 hex, alternative to text"},"url":{"type":"string","description":"Timestamp the exact bytes this URL returns now"}}},"output_schema":{"type":"object","properties":{"sha256":{"type":"string"},"status":{"type":"string"},"ots_base64":{"type":"string"},"calendars":{"type":"array"},"next_step":{"type":"string"}}},"is_active":true,"provider":"agentsvc.io","tags":["timestamp","opentimestamps","bitcoin","proof-of-existence","notarization"],"method":"POST","example_input":{"text":"Contract draft v3, agreed 2026-10-11"},"price_atomic":"5000","price_display":"$0.005 USDC","try_url":"https://agentsvc.io/api/v1/try/btc-timestamp","try_limit_per_day":3,"info_url":"https://agentsvc.io/api/v1/services/btc-timestamp","page_url":"https://agentsvc.io/services/btc-timestamp","curl_example":"curl -X POST https://agentsvc.io/api/v1/proxy/btc-timestamp -H \"Content-Type: application/json\" -d '{\"text\":\"Contract draft v3, agreed 2026-10-11\"}'","status":{"ok":true,"latency_ms":1387,"checked_at":"2026-10-11T12:04:01.048Z"}},"payment":{"protocol":"x402","x402_versions_accepted":[1,2],"scheme":"exact","network":"eip155:8453","network_v1":"base","chain_id":8453,"asset":"USDC","asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_decimals":6,"eip712_domain":{"name":"USD Coin","version":"2","chainId":8453,"verifyingContract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"},"pay_to":"0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27","facilitator":"https://api.cdp.coinbase.com/platform/v2/x402","request_header_v2":"PAYMENT-SIGNATURE","request_header_v1":"X-PAYMENT","requirements_v2":"base64 JSON in the PAYMENT-REQUIRED response header of the 402","requirements_v1":"JSON body of the 402 (accepts[0])","receipt_header":"PAYMENT-RESPONSE (and X-PAYMENT-RESPONSE): base64 JSON with transaction hash","accounts_required":false,"api_keys_required":false,"settlement":"per call, on-chain, after the service succeeded. Failed calls are never charged.","also_accepted":[{"network":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","network_v1":"solana","asset":"USDC","asset_mint":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","pay_to":"5JzPS5qpEwUM1vTC9GG7uqvwJdHzbEwfoPHf2Ki977tg","note":"Solana option is accepts[1] in the 402. The facilitator pays the transaction fee (extra.feePayer); the payer needs only USDC, no SOL."}]},"links":{"catalog":"https://agentsvc.io/api/v1/services","payment_requirements":"https://agentsvc.io/api/v1/payment-requirements","credits":"https://agentsvc.io/api/v1/credits","openapi":"https://agentsvc.io/openapi.json","llms_txt":"https://agentsvc.io/llms.txt","llms_full_txt":"https://agentsvc.io/llms-full.txt","agents_md":"https://agentsvc.io/AGENTS.md","skill_md":"https://agentsvc.io/SKILL.md","status":"https://agentsvc.io/api/v1/status","docs":"https://agentsvc.io/docs","mcp_server":"https://agentsvc.io/mcp-server.mjs","discovery":"https://agentsvc.io/.well-known/x402","agent_card":"https://agentsvc.io/.well-known/agent-card.json"}}