chainverdict.xyz
Validate an ISIN against ISO 6166: country prefix, 9-character NSIN and Luhn check digit. Structural only; does not confirm the instrument exists or is tradeable.
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 97 ms
- Price
- $0.001 per call
- Paying buyers, last 30 days
- 2 (directory's own records)
- Paid calls, last 30 days
- 2
- Category
- Developer tools and utilities
- Address
- https://chainverdict.xyz/v1/validate/isin/:isin
Accuracy: paid answers checked against an independent record
Not yet in our paid checks. A seller we have not checked has neither passed nor failed.
For agents
This page as JSON: /sellers/17ee3ae44d6d.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).