OpenTechnical

OT-2026-000002831

Publication integrity record

Machine component, power transmission device, and robot

This page is the evidence record. It changes as evidence arrives: a trusted timestamp, an independent retrieval, a custody deposit. The disclosure itself (/p/OT-2026-000002831) never changes.

Identity and time

Publication numberOT-2026-000002831 · never reused
Internal UUID01a0a67f-0923-70f1-bad7-fe5245fcb197 · UUIDv7, RFC 9562
Publication timestamp2026-09-15T19:15:38.404516Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000002831
StatusPUBLIC

Content hashes

Canonical text5308a4d3cdd183046e800ce34e07bc5ac0623ff2e77c2f2c98b4e725bceb2fbf
Markdown67669c27cef6aff91f7dbe7b5c3ad8655ee3205a36a063b39fcea477045d41af
PDF
Publication paged6371df125c7f7a60ca7139279cc7b0574b7130195efb7d470186395ff432b69
Manifest9bb962e861a460f26d91c3d04035bec8300ebf928006e9f8971882c7d1ab08d8

SHA-256, lowercase hex, over the exact bytes of each published file. Every figure is hashed individually in the manifest.

Manifest signature

AlgorithmEd25519 · key OT-SIGN-2026-01 · Verified
SignatureNj9WUuegCQW+CGo0noAOrDxupoLIe3+hfdfFJHQh7gLhDAfptWpBv+vGqXIzD6VLopp1XlDZUYgNrELm0CvWDQ==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-15T19:27:02Z
batch OT-TS-2026-W38-002 · RFC 3161 token · inclusion proof
root 2d7e364e718bd6a32072ec57f9edc195...

Independent retrieval

2026-09-15T19:20:28.679971ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002831
observed d6371df125c7f7a60ca7139279cc7b05...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T19:20:28.654614ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002831/manifest.json
observed 9bb962e861a460f26d91c3d04035bec8...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T19:20:28.643348ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002831/publication.txt
observed 5308a4d3cdd183046e800ce34e07bc5a...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139

Requested from infrastructure separate from the publication system, over the public internet, with no credential. A MATCH means an ordinary internet client could fetch the publication and received exactly the bytes recorded above.

Independent archive

External archivePending Canonical URLs are submitted to an independent archive in batches.

A capture held by an outside archive is evidence that does not depend on OpenTechnical continuing to exist. It supplements the records above; it does not replace them.

Third-party custody

OT-CUSTODY-2026-W38OpenTechnical-Custody-2026-W38.tar.zst
f2fc69d02142424a578267e5e3a6d3bb... · 402,218,449 bytes · held by held on site pending an external custodian · retention permanent