GET /api/v1/proof/{hash}/ots

Download the raw OpenTimestamps proof file (.ots) as application/octet-stream. Returns the complete proof when available, otherwise the pending proof. Requires API key. Returns 404 if the proof is private and the caller is not the owner.

Headers

Header	Required	Description
`X-API-Key`	Yes	Your API key

Response

200 — Raw .ots binary, Content-Disposition: attachment; filename="{hash}.ots"
404 — Proof not found, private and you are not the owner, or no OTS proof stored for it yet

cURL Example

curl -o document.pdf.ots \
  https://proofintegrity.net/api/v1/proof/e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855/ots \
  -H "X-API-Key: your-api-key-here"

Verify the downloaded file with any OpenTimestamps client

ots verify document.pdf.ots -f document.pdf

API Docs

GET /api/v1/proof/{hash}/ots