OpenTechnical

OT-2026-000028441

Publication integrity record

Six cup vacuum gripper, six outlet manifold, pump fed, manifold pressure sensor, 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-2026-000028441) never changes.

Identity and time

Publication numberOT-2026-000028441 · never reused
Internal UUID01a0ae72-e2f6-7f28-bd06-c073e7df420d · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:19:19.949572Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000028441
StatusPUBLIC

Content hashes

Canonical text4921efe696676c8e26626327f69c78a0a34d617d30af2d1be039eaddb803705b
Markdown3251e8dcdbaaa0044ae334dd0f37f679aadfa9a68bc056707d0a0b3df8131883
PDF
Publication paged424c9276a751c5f8570290acb2db47e64eef2045f553fc07dfb1d40ce2c003f
Manifest4a689e815aa84f11dfd2d666c609485aff8904c38effbcfe05c5c3614e235569

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
SignatureJoCsd8RLW/f4sGEF3fj+NDq8+6mm9MCfP4F1t+7KwE08aK2hnMhYot1XX3GbboXhgAvPLOsXcf6cB5ahB5kTCg==
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

2026-09-17T11:40:34.629920ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028441
observed d424c9276a751c5f8570290acb2db47e...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:40:34.612662ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028441/manifest.json
observed 4a689e815aa84f11dfd2d666c609485a...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:40:34.588432ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028441/publication.md
observed 3251e8dcdbaaa0044ae334dd0f37f679...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:40:34.571458ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028441/publication.txt
observed 4921efe696676c8e26626327f69c78a0...
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.