{"slug":"soren-com-v1-attestation-e72848","title":"A signed, timestamped statement that a specific SHA-256 was presented to Soren a","host":"soren.com","method":"GET","resource":"https://soren.com/v1/attestation","category":"other","description":"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 i","price_listed":0.02,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":3,"reported_payers_30d":1,"networks":["base","eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"hash":"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855","note":"model output v3"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"hash":{"description":"SHA-256 of your content, 64 lowercase hex characters. Hash it yourself.","examples":["e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"],"type":"string"},"note":{"description":"Up to 200 characters, included in the signed statement.","examples":["model output v3"],"type":"string"}},"required":["hash"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"}}},"history":[],"description_full":"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 proof it existed earlier. Verify with soren.com/oracle-key.json","last_updated":"2026-09-08T01:15:18.121Z","schemes":["exact"]}