Signed proof a hash existed by a given moment ($0.02)

Returns a signed, timestamped statement that a SHA-256 was presented to Soren at a specific moment. You hash your own content and send only the hash — Soren never receives it. Proves existence no later than the timestamp; not authorship, not truth, not legal notarisation.

get/v1/attestation

Request

  • Base URL: https://soren.com
  • URL: https://soren.com/v1/attestation
  • Auth: none declared

Query parameters

hashstring required

SHA-256 of your content, 64 lowercase hex characters.

notestring

Optional text included in the signed statement.

Response

Signed attestation.

attestedboolean
hashstring
observed_atstring date-time
statementstring
signatureobject
what_this_provesstring
what_this_does_not_provestring[]

Changes

No recorded changes to this operation across all 1 revision of this API.