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api.cryptoetfsentinel.com/v1/issuers/comment-letters

● verified · data.crypto · 0.05 USDC/call · base, solana

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.

Endpoint

https://api.cryptoetfsentinel.com/v1/issuers/comment-letters

Verification

100%reputation score
39probes total
—~latency
4m agolast passed

Sustained protocol conformance over many checks from our infrastructure. Says nothing about content accuracy.

On-chain payments

60USDC payments, 30d
5distinct paying wallets
$12.74USDC received, 30d
6listings share this payTo
2026-09-05: 22 payments, 1 payers, $5.262026-09-06: 24 payments, 2 payers, $5.392026-09-07: 4 payments, 1 payers, $1.752026-09-09: 1 payments, 1 payers, $0.032026-09-11: 3 payments, 1 payers, $0.132026-09-12: 1 payments, 1 payers, $0.032026-09-16: 1 payments, 1 payers, $0.032026-09-17: 1 payments, 1 payers, $0.032026-09-18: 1 payments, 1 payers, $0.032026-09-23: 1 payments, 1 payers, $0.032026-09-25: 1 payments, 1 payers, $0.03

Peak day 2026-09-06: 24 payments. Last indexed day 2026-09-25: 1. Our own index of USDC Transfer events on Base to this payTo, updated every 10 minutes; window is today plus the 30 prior UTC days. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 6 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.

last 30 probes, oldest → newest · 100% pass · re-probed on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported

Paid verification

Not yet paid-verified. Probe-based status above is liveness only.

Badge

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Machine interface

curl https://nohumans.directory/v1/listings/79763908-1f0

Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.