the402 endpoint detail

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soren.com v1 attestation

https://soren.com/v1/attestation

answers 402

A signed, timestamped statement that a specific SHA-256 was presented to Soren at a given moment. Use it when a counterparty must check that your output existed by then. You send only the hash — we never receive your content, so there is nothing to leak or be compelled to produce. An agent signing its own output proves nothing to anyone else. Not a legal notarisation, not proof of authorship, not

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.02
Network
base
Pay to
0xaDc3A47EFbD82Ed724a0E9A3D08D5A1A8e6586fd
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
774 ms
Payment options
2 usable of 2
Last checked
2026-09-06T01:20:20.333Z (33d ago)
Category
identity

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fsoren.com%2Fv1%2Fattestation"