{"slug":"api-cryptoetfsentinel-com-v1-issuers-comment-letters-d60e2c6d","name":"api.cryptoetfsentinel.com/v1/issuers/comment-letters","summary":"Crypto ETF Sentinel — Full SEC ↔ issuer comment-letter history for one US spot crypto ETF issuer: UPLOAD/CORRESP pairs in order with a review-intensity profile. Comment-letter cadence is a leading indicator of approval proximity. Use when assessing how far along one filing's SEC review is. Pass the issuer's SEC CIK as cik.","status":"live","indexable":true,"listed_since":"2026-10-25T17:53:22.543225Z","sources":[{"source":"x402_bazaar","external_id":"https://api.cryptoetfsentinel.com/v1/issuers/comment-letters","owner_address":"0x169bf49c6ee5a179190121ab8d180b50e31683d1","seen_at":"2026-10-26T17:13:30.444321Z","removed_at":null}],"endpoints":[{"url":"https://api.cryptoetfsentinel.com/v1/issuers/comment-letters","host":"api.cryptoetfsentinel.com","protocol":"x402","state":"live","last_probe_at":"2026-10-26T02:39:19.417980Z","last_ok_at":"2026-10-26T02:39:19.417980Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"api-cryptoetfsentinel-com-ffc0d867","name":"api.cryptoetfsentinel.com"}],"payment_options":[],"usage":{"source":"x402_bazaar","unique_payers_30d":1,"paid_calls_30d":1,"last_paid_at":"2026-10-05T04:30:07.776Z","reported_at":"2026-10-26T17:13:30.444321Z"},"assessment":{"method":"2026.10.1","checks":[{"id":"answers","state":"pass","reason":"Answered a check 12 hours ago."},{"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 0 days; 30 are needed."},{"id":"real_customers","state":"fail","reason":"1 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":"2026-10-26T14:51:23.578371Z"},"identity":{"endpoint_domains":["cryptoetfsentinel.com"],"proven_domains":[],"proven_wallets":[],"namesakes":[],"namesake_count":0},"replies":[],"customers":null,"scan":null,"notice":"Not affiliated with addrbook — claim or request removal."}