{"id":"x402.khotem-cryptographic-witness","name":"KHOTEM — Cryptographic Witness","summary":"KHOTEM is a cryptographic witness for AI agents: seal (SHA-256 commitments), attest, verify, timestamp and audit, plus three paid operational-law documents for agent builders. x402 v2 with EIP-712-ready accepts on Base, Polygon and Solana. Direct on-chain USDC verification — no facilitator, no accounts, no API keys. Pay per request, present the settlement txHash in X-PAYMENT. Machine-readable via OpenAPI, Bazaar dis…","kind":"http_api","url":"https://khotem.com","categories":["scraping_extraction"],"tags":["Verification"],"sources":[{"source":"x402_list","ref":"https://x402-list.com/services/khotem-cryptographic-witness"}],"pricing":{"model":"per_call","min_usd":0.02,"max_usd":0.25,"rails":["x402"],"networks":["eip155:137","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"]},"status":"unclaimed","first_party":false,"discovery":{"llms_txt":"https://khotem.com/llms.txt","x402_manifest":"https://khotem.com/.well-known/x402","openapi":"https://khotem.com/openapi.json","agent_card":"https://khotem.com/.well-known/agent-card.json"},"trust":{"verified_buyers_30d":4,"settlements_30d":57,"volume_usd_30d":1.72,"top_buyer_share_30d":0.977,"last_settlement_at":"2026-10-02T05:10:09Z","shared_payout":false,"wash_flags":["one_buyer_>=80pct_of_volume"],"method":"hub-trust-v0.1","source":"x402-list.com on-chain measured settlements (CC BY 4.0)","score":null,"evidence":"excluded_wash_signals"},"signals":{"x402_list_status":"online","x402_list_verified":true,"uptime_24h":100,"uptime_30d":100,"p95_ms":542,"compliance_grade":"A","risk_level":"clean","endpoint_count":8,"openapi_paid_ops":30},"origin":"https://khotem.com","attribution":["Data: x402-list.com (CC BY 4.0)"],"badges":["unclaimed","wash_signals"],"tiers":{"tier":null,"tier_label":null,"highest_earned":null,"earned":[],"paid":[],"not_yet":[{"id":"verified","reason":"listing not claimed with domain proof"},{"id":"trusted","reason":"needs 3+ independent buyers and 5+ settlements in 30 days"}],"badge_svg":"https://agentropolis.io/badge/x402.khotem-cryptographic-witness.svg","page":"https://agentropolis.io/listing/x402.khotem-cryptographic-witness","embed_markdown":"[![Agentropolis](https://agentropolis.io/badge/x402.khotem-cryptographic-witness.svg)](https://agentropolis.io/listing/x402.khotem-cryptographic-witness)","tiers_doc":"https://agentropolis.io/badges"},"page":"/listing/x402.khotem-cryptographic-witness","kit_manifest":"/api/v1/listings/x402.khotem-cryptographic-witness/kit.json","go":"/go/x402.khotem-cryptographic-witness?src=api","claim":{"how":"Sellers: sign in at /sellers and claim this listing (verify via /.well-known file, DNS TXT, or an email at the listing's domain).","opt_out":"Sellers can ask for removal or corrections after claiming."}}