OpenTechnical

OT-2026-000074014

Publication integrity record

Single bellows cup vacuum gripper, 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-2026-000074014) never changes.

Identity and time

Publication numberOT-2026-000074014 · never reused
Internal UUID01a0ae93-2b8f-74e3-b49c-3f195d82006d · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:54:35.679268Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000074014
StatusPUBLIC

Content hashes

Canonical textbc3ae6aa6a622f759054f17f335137b7aced93291a28c42e840df7892e90b4aa
Markdown9aafaf128f89d5d0e2a3541a6bbce2654a8089d729140047303c65ca65aa93ef
PDF
Publication pageb6cc356842bc21af7545439d2d5bf330ba020325f6587e9245b0fcc3bce0fe1f
Manifestd627c9dde5d8cb96697492267186994b8d8a79a8eb008cf1fea5eda43ccdc1fa

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
SignatureHoD7LukLl6V9bs7CE5MFonI77roo6pzUkq3XU8LhIQjvqSBbmZuxlAquH4yTKeFkm4h+xZnR3vaf6sUun7JhCA==
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

2026-09-17T10:19:58.464974ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000074014
observed b6cc356842bc21af7545439d2d5bf330...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T10:19:58.446444ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000074014/manifest.json
observed d627c9dde5d8cb96697492267186994b...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T10:19:58.428889ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000074014/publication.md
observed 9aafaf128f89d5d0e2a3541a6bbce265...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T10:19:58.410639ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000074014/publication.txt
observed bc3ae6aa6a622f759054f17f335137b7...
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.