OpenTechnical

OT-2026-000004158

Publication integrity record

Vacuum cup gripper, two zone face, three outlet manifold, two stage ejector

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-2026-000004158) never changes.

Identity and time

Publication numberOT-2026-000004158 · never reused
Internal UUID01a0a90f-a89a-7215-a9b7-8c36281d4829 · UUIDv7, RFC 9562
Publication timestamp2026-09-16T07:12:50.845393Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000004158
StatusPUBLIC

Content hashes

Canonical textb65f7db5f8c67214fe34d3e43b25dd95913e33fcdfa6e9217fe0dbf14064895f
Markdowna252c28f8d54c636389a4f2c52948114f8f6a0f3b33e69b4307182c4cc8daf29
PDF
Publication page108c3cfcdf7748e0c08a39231aa979c72f2f1d25bc502668f3510783b7f2691f
Manifest021cf8cdc2e971848e4b47e35464f0d39dccc8fcc8c13d3696321379468821b8

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
SignatureMOaDfTc8OzbxpGi3UH59uYRRBfP52SRgx8bTtbdZjv7jR8myD6AWX+hWisnq7LtrkVMlC0od5zxUpwFiu3+pAA==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-16T07:27:02Z
batch OT-TS-2026-W38-009 · RFC 3161 token · inclusion proof
root aada101caea153fd76622afa3661a5b8...

Independent retrieval

2026-09-16T07:20:29.898452ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000004158
observed 108c3cfcdf7748e0c08a39231aa979c7...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T07:20:29.885165ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000004158/manifest.json
observed 021cf8cdc2e971848e4b47e35464f0d3...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T07:20:29.871737ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000004158/publication.md
observed a252c28f8d54c636389a4f2c52948114...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T07:20:29.736891ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000004158/publication.txt
observed b65f7db5f8c67214fe34d3e43b25dd95...
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.