OpenTechnical

OT-2026-000090254

Publication integrity record

Two bellows cup vacuum gripper, two zone face, two stage ejector, pressure sensor per zone, sustained 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-2026-000090254) never changes.

Identity and time

Publication numberOT-2026-000090254 · never reused
Internal UUID01a0ae9c-428f-7cb9-87d1-6fccebbc4894 · UUIDv7, RFC 9562
Publication timestamp2026-09-17T09:04:31.390046Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000090254
StatusPUBLIC

Content hashes

Canonical text480b7de7375c342fb8bfd10ef5f7fc0989076686490dc0dfe996e9a60481926a
Markdownfaf6ea956795e8ff581bec949775fc30ea045f934915270678252d9dd494026d
PDF
Publication page8f227cc8288a7d67b89e1cc8dddfefc4b802599bed4b90a15f76e953a04c997e
Manifest90733c28a4910449e600eacb16509c925286e2df3fe5649cb5f2872356816da3

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
SignatureKmPsIPV8Juy7VlmvlLpm0qXBW928SPx9H7l0wmAb6Of1UeUtoMzcQXg4VTvYJJw1SFyF9z2XR+vbmP230yFsCA==
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

2026-09-17T09:46:19.758388ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090254
observed 8f227cc8288a7d67b89e1cc8dddfefc4...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:46:19.741199ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090254/manifest.json
observed 90733c28a4910449e600eacb16509c92...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:46:19.723451ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090254/publication.md
observed faf6ea956795e8ff581bec949775fc30...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:46:19.706149ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090254/publication.txt
observed 480b7de7375c342fb8bfd10ef5f7fc09...
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.