{"slug":"x402-fairseal-io-v2-anchor-e351f669","name":"x402.fairseal.io/v2/anchor","summary":"Create a tamper-proof on-chain record of any content hash. Submit a SHA-256 hash; returns a cryptographic proof of existence anchored to Base mainnet via Merkle batch. Poll status_url for verifiable receipt with on-chain tx hash. $0.02 USDC per anchor. Audit trail for AI decisions or documents.","status":"live","indexable":true,"listed_since":"2026-10-25T17:57:20.261217Z","sources":[{"source":"x402_bazaar","external_id":"https://x402.fairseal.io/v2/anchor","owner_address":"0xbd5eb5559f5ac14475ac0c81b6735a4d9106ce28","seen_at":"2026-10-27T12:36:43.304892Z","removed_at":null}],"endpoints":[{"url":"https://x402.fairseal.io/v2/anchor","host":"x402.fairseal.io","protocol":"x402","state":"live","last_probe_at":"2026-10-27T11:31:41.958145Z","last_ok_at":"2026-10-27T11:31:41.958145Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"x402-fairseal-io-e5047477","name":"x402.fairseal.io"}],"payment_options":[{"endpoint_url":"https://x402.fairseal.io/v2/anchor","network":"eip155:8453","scheme":"exact","rail":"exact","asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","coin":"USDC","asset_label":"USD Coin","amount":"20000","pay_to":"0xbd5eb5559f5ac14475ac0c81b6735a4d9106ce28","observed_at":"2026-10-27T11:31:41.958145Z"}],"usage":{"source":"x402_bazaar","unique_payers_30d":2,"paid_calls_30d":8,"last_paid_at":"2026-10-27T06:05:29.413Z","reported_at":"2026-10-27T12:36:43.304892Z"},"assessment":{"method":"2026.10.2","checks":[{"id":"answers","state":"pass","reason":"Answered a check within the last hour."},{"id":"owner","state":"fail","reason":"No one has proven control of its domain or of the wallet it is paid at."},{"id":"track_record","state":"fail","reason":"Listed for 1 days; 30 are needed."},{"id":"real_customers","state":"fail","reason":"2 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed."},{"id":"clean_scan","state":"not_applicable","reason":"Not an MCP server."}],"passed":1,"applicable":4,"contradicted":false,"computed_at":"2026-10-27T11:32:38.094540Z"},"identity":{"endpoint_domains":["fairseal.io"],"proven_domains":[],"proven_wallets":[],"namesakes":[],"namesake_count":0,"identity_checks":[],"wallet_attestations":[],"human_backings":[]},"replies":[],"customers":null,"scan":null,"notice":"Not affiliated with addrbook — claim or request removal."}