OpenTechnical

OT-2026-000020252

Publication integrity record

Single bellows cup vacuum gripper, plant vacuum fed, supply line pressure sensor, pulsed 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-2026-000020252) never changes.

Identity and time

Publication numberOT-2026-000020252 · never reused
Internal UUID01a0ae6f-437a-70ec-a9eb-729e0cb6a43a · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:15:22.507199Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000020252
StatusPUBLIC

Content hashes

Canonical textfa0c51851b74c09f0d86c320dd8505359a40ccae77dbe85fc188de2da055991b
Markdownceceb9c88cfa58ee08034aa0d022947c277c9ed0fdec5f9dcd68fb8d38f10cba
PDF
Publication page5f0853572fe509c6bf24da31f0064adc3999d27e6c5ab93846b90bc6fa013ebc
Manifestac0a1f8b3b0c9c1afd6fe3105a49ef00d8be9837f6725411bdc2031effff7bb0

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
SignatureeebR2J1pFegRNz54ELbTCzfga8wsXSvZljGYC3/W4mLL/shc7cFd32kJb/F7Iu27faA4KQI6m1+WXrnyLsJtAg==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-17T08:42:32Z
batch OT-TS-2026-W38-020 · RFC 3161 token · inclusion proof
root 7c99e0163c3f1d2dc0f1dec0442e2af7...

Independent retrieval

2026-09-17T11:56:35.866167ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020252
observed 5f0853572fe509c6bf24da31f0064adc...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:56:35.846418ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020252/manifest.json
observed ac0a1f8b3b0c9c1afd6fe3105a49ef00...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:56:35.825021ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020252/publication.md
observed ceceb9c88cfa58ee08034aa0d022947c...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:56:35.806899ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020252/publication.txt
observed fa0c51851b74c09f0d86c320dd850535...
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.