Crypto ETF Sentinel — Full SEC ↔ issuer comment-letter history for one US spot crypto ETF issuer. Returns UPLOAD/CORRESP pairs in chronological order with review-intensity classification. Comment-letter cadence is a leading indicator of how close an issuer is to approval. Pass the issuer's SEC CIK as the ``cik`` query param.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.05 USDC | 0x169B...83d1 |
| solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp | exact | 0.05 tokens | Ezzbt3...pMxk |