← All endpoints
api.anchor-x402.com v1 attest
https://api.anchor-x402.com/v1/attest
payable
Verify a signature over (input_hash, output_hash, decision) and dual-chain anchor the result — $0.01 USDC
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.01
- Network
- base
- Pay to
- 0x127462e296fAc1A7F5cF33bA57bB2f0FFf5cD0B6
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 172 ms
- Payment options
- 3 usable of 3
- Last checked
- 2026-08-10T09:09:09.271Z (1d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.anchor-x402.com%2Fv1%2Fattest"