OpenTechnical

OT-2026-000090472

Publication integrity record

Foam pad vacuum gripper, four zone face, pump fed, pressure sensor per zone, sustained blow-off before set-down

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-2026-000090472) never changes.

Identity and time

Publication numberOT-2026-000090472 · never reused
Internal UUID01a0ae9c-7f2e-727d-a43a-25ed1fb0b436 · UUIDv7, RFC 9562
Publication timestamp2026-09-17T09:04:46.997728Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000090472
StatusPUBLIC

Content hashes

Canonical text8fe8eb78a495698acf3eeea39ec89230d231b195262cef34bd6d1a8a22ab6ffd
Markdownd8eaf263170039cd3aa8311b86f2dc0c85ba3077fd901a884d42ec38dcb489ef
PDF
Publication page43ee4b50bd31f51423aea937efbc35286be0f05a875879d92166a48dc67fe67a
Manifestde0f6ecbe04570992018041516f894432efc59a3cb897af88296bacc455f323b

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
SignaturesJ/PQ4AqriBuxP+ezVADVBzqtbHF6327xzz1GXS6p79KorVGkq8b2Zo+UIXTjVY/gHn4PvsCrbhXPuUJgtCcBw==
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

2026-09-17T09:44:35.965112ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090472
observed 43ee4b50bd31f51423aea937efbc3528...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:44:35.948742ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090472/manifest.json
observed de0f6ecbe04570992018041516f89443...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:44:35.932778ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090472/publication.md
observed d8eaf263170039cd3aa8311b86f2dc0c...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:44:35.916112ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090472/publication.txt
observed 8fe8eb78a495698acf3eeea39ec89230...
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.