OpenTechnical

OT-2026-000072498

Publication integrity record

Single bellows cup vacuum gripper, common isolation valve, pump fed, supply line pressure sensor, vented 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-2026-000072498) never changes.

Identity and time

Publication numberOT-2026-000072498 · never reused
Internal UUID01a0ae92-89d8-7377-8806-bd38649f7d2d · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:53:54.283203Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000072498
StatusPUBLIC

Content hashes

Canonical text37d750b77821d820a2e764559fd58f79678f33546b768664a033472406725992
Markdowncea77f077759de31804e5df84eb6f06a5fe786eb3572801f8d56355f4a7a36f3
PDF
Publication pagecdaeefc60d5626cd53751ca5b5b09d1646dab2b8cb9edcbce4a92ba277f45a7f
Manifest072e962c270e8f603a8d3a226936d0e9c431424c86a028b967afbbc2b14d79b4

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
SignatureLVBLCQApZfKhDzTvAzPjrGf7Zn78JMT79ARpAak0LLlSaVOMsa0rubTpl2jPytxfUzCmxzqJgpYqzT+1LeHbDg==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-17T09:07:03Z
batch OT-TS-2026-W38-022 · RFC 3161 token · inclusion proof
root 061e9ae86cc297cdce873398aaec3f72...

Independent retrieval

2026-09-17T10:22:19.522770ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000072498
observed cdaeefc60d5626cd53751ca5b5b09d16...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T10:22:19.504553ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000072498/manifest.json
observed 072e962c270e8f603a8d3a226936d0e9...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T10:22:19.487064ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000072498/publication.md
observed cea77f077759de31804e5df84eb6f06a...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T10:22:19.469356ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000072498/publication.txt
observed 37d750b77821d820a2e764559fd58f79...
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.