OpenTechnical

OT-2026-000015015

Publication integrity record

Four bellows cup vacuum gripper, four zone face, common isolation valve, two stage ejector, pulsed blow-off before set-down, on a tool changer

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-2026-000015015) never changes.

Identity and time

Publication numberOT-2026-000015015 · never reused
Internal UUID01a0ae6d-d096-715c-bbcf-a2dfdf544de2 · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:13:47.560717Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000015015
StatusPUBLIC

Content hashes

Canonical text86942c8591690e4fa80532d65f16e9e1c6008c753971649fe0a8587d4447f9de
Markdown3a5c8568c207491eec9f4bd7c17ff96b979423c8d75ff8b2524baa290855d41d
PDF
Publication pagea5e2cec82611e1429642d02fbef244c95eb730192a4bc8d4ef796a60d7405d96
Manifestc9fe40f9d38b7e699a0772ee363ca2c9dfba2562ef5242c6be356c42c1b27213

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
Signature6KUJDGtZEYGyc5Wnnt8agH6BkV8lhX/DHeAPmVSiGqIx2RC0Deq6CRPJncDlwvrlvUWTH/RvKrpxC3HuGZ9TDw==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-17T08:42:32Z
batch OT-TS-2026-W38-020 · RFC 3161 token · inclusion proof
root 7c99e0163c3f1d2dc0f1dec0442e2af7...

Independent retrieval

2026-09-17T12:06:59.229595ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000015015
observed a5e2cec82611e1429642d02fbef244c9...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T12:06:59.211817ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000015015/manifest.json
observed c9fe40f9d38b7e699a0772ee363ca2c9...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T12:06:59.192334ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000015015/publication.md
observed 3a5c8568c207491eec9f4bd7c17ff96b...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T12:06:59.174292ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000015015/publication.txt
observed 86942c8591690e4fa80532d65f16e9e1...
fetched by instance-3.rotem.ai from 34.69.0.72, 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

Custody packagePending Custody packages are produced weekly.