OpenTechnical

OT-2026-000074540

Publication integrity record

Two bellows cup vacuum gripper, two outlet manifold, 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-2026-000074540) never changes.

Identity and time

Publication numberOT-2026-000074540 · never reused
Internal UUID01a0ae93-717b-78af-ae66-0744ecc658b1 · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:54:53.574555Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000074540
StatusPUBLIC

Content hashes

Canonical text28e8ba2bdef383c74723b5d10cca7bb0aa5805ef798dd96726a823a34cfc523b
Markdown5ea49ee97bea25400b5f611a965f932a553979446f022744607aec8e5f930389
PDF
Publication pageda255a8e9e7980957a1cbc2696b5f587b6ecdd14e7f14ecb4671ab594053688d
Manifest80f9721ec38d921dde1e2d1de1857242a74345b01d19eb0b160b376467ac8b22

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
SignaturePyZB7+wVSvwwTAWDvO+FypjJvAzw9nQ/T+q6YHcl+UpgChAF4eF3WXu923mjmSIgILGWaGsuY7i/9zRtPoZXAQ==
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

2026-09-17T10:19:31.364331ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000074540
observed da255a8e9e7980957a1cbc2696b5f587...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T10:19:31.346717ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000074540/manifest.json
observed 80f9721ec38d921dde1e2d1de1857242...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T10:19:31.328825ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000074540/publication.md
observed 5ea49ee97bea25400b5f611a965f932a...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T10:19:31.307668ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000074540/publication.txt
observed 28e8ba2bdef383c74723b5d10cca7bb0...
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.