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api.anchor-x402.com v1 attest
https://api.anchor-x402.com/v1/attest
answers 402
Attest a decision: sign (input_hash, output_hash, decision) yourself, or omit the signature and the treasury signs — then dual-chain anchor. Free re-verify at /v1/attest/verify. $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
- 285 ms
- Payment options
- 3 usable of 3
- Last checked
- 2026-09-06T01:11:16.022Z (19d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.anchor-x402.com%2Fv1%2Fattest"