https://api.cryptoetfsentinel.com/v1/issuers/comment-letters
https://api.cryptoetfsentinel.com/v1/issuers/comment-lettersOverview
SEC↔issuer correspondence (UPLOAD/CORRESP filings) as EDGAR publishes them. Mostly retrospective; SEC rarely releases letters during active review. Crypto ETF Sentinel — regulatory data oracle for US spot crypto ETFs. Pay in USDC on Base or Solana.
Protocol
x402
Price
—
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
finance/regulatory
Provider
cryptoetfsentinel
Source
bazaar
Indexed
2026-05-13 19:55:22
Health
Status
healthy
Latency (p50)
40ms
Uptime (30d)
100.0%
Reliability Score
100/100
Last Checked
2026-06-28 21:02:17
Last Healthy
2026-06-28 21:02:17
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-06-28 21:02:17 | healthy | 402 | 53ms | |
| 2026-06-28 17:39:20 | healthy | 402 | 38ms | |
| 2026-06-28 13:11:13 | healthy | 402 | 40ms | |
| 2026-06-28 08:10:38 | healthy | 402 | 40ms | |
| 2026-06-27 10:14:57 | healthy | 402 | 39ms |