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witnessd.vip api witness
https://witnessd.vip/api/witness
answers 402
Independently fetch, hash, timestamp and archive a URL or API response; returns a signed certificate. Merkle-anchored on Base hourly. Neutral third-party evidence for agent commerce disputes.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.02
- Network
- base
- Pay to
- 0xf058D8A375343DAA6967adF3ac6d425f3c9C8dfc
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 520 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-15T14:30:03.561Z (2d ago)
- Category
- web-scraping
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fwitnessd.vip%2Fapi%2Fwitness"