Tamper-evident provenance — proof that this exact document existed, unaltered, as of a point in time. This does not assert the document's contents are true, only that these bytes are unchanged since they were anchored.
.ots proof above and the original document, then run
ots verify document.ots with the OpenTimestamps client, or upload both at opentimestamps.org. The proof commits this document's SHA-256 into a transaction recorded in the Bitcoin blockchain — no trust in Acme Corp (Demo) required.