OpenTechnical

OT-2026-000020415

Publication integrity record

Two cup vacuum gripper, two zone face, per zone isolation, two stage ejector, 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-2026-000020415) never changes.

Identity and time

Publication numberOT-2026-000020415 · never reused
Internal UUID01a0ae6f-437b-7087-9c0c-f9c3e70a0fd9 · 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-2026-000020415
StatusPUBLIC

Content hashes

Canonical text8c1ebeb163e0f82d12807e391b9f007f740179aac276c3b3b430a63cea6e47c2
Markdowndd6f30c70d95842a22dc1bd7fb5576922f44ffe8d07d68fb105c7b19cfd9da77
PDF
Publication pageb9c2f8adfd7b865de700d658836bd39d117fc3080cfd5168a6cd4737b873743c
Manifest8ea8d844be5b06a56f2a5c0d45d260ab93e36b820e4e2623954e3022aeba3155

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
SignaturezU6WK//caaUTUMQlOOTloOetNIT5DTFlwU+Rug0Aeua9MEL3i+8JnsuQ3sO/5V3/6dHQLUIqD25EKdKpbZKnAQ==
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

2026-09-17T12:00:19.729039ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020415
observed b9c2f8adfd7b865de700d658836bd39d...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T12:00:19.711878ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020415/manifest.json
observed 8ea8d844be5b06a56f2a5c0d45d260ab...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T12:00:19.692887ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020415/publication.md
observed dd6f30c70d95842a22dc1bd7fb557692...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T12:00:19.672895ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020415/publication.txt
observed 8c1ebeb163e0f82d12807e391b9f007f...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:57:23.722900ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020415
observed b9c2f8adfd7b865de700d658836bd39d...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:57:23.705910ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020415/manifest.json
observed 8ea8d844be5b06a56f2a5c0d45d260ab...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:57:23.687708ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020415/publication.md
observed dd6f30c70d95842a22dc1bd7fb557692...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:57:23.672007ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020415/publication.txt
observed 8c1ebeb163e0f82d12807e391b9f007f...
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.