OpenTechnical

OT-2026-000005275

Publication integrity record

Bellows cup vacuum gripper, common isolation valve, pump fed, contact triggered on the face

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-2026-000005275) never changes.

Identity and time

Publication numberOT-2026-000005275 · never reused
Internal UUID01a0a933-941c-7b50-b303-a2d3c16c002f · UUIDv7, RFC 9562
Publication timestamp2026-09-16T07:52:04.895432Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000005275
StatusPUBLIC

Content hashes

Canonical text5850498d824c5007d53a2c52919e6ad284c649468b3ca9844795465fa757a4df
Markdowne857bf602e3d58fb9ead425a0e46de7bc2f6432d7703ba2c0e1fe40331199f36
PDF
Publication page4dbdf6dd493705895eda4502ba2b1fa2e717a8a4f065539274de332cb7657a6e
Manifest0543d1099f675e221927de338c8c99a7e9686909ea65d19027586b062c511a1b

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
SignatureABzKf31ISJ4om2uS5RplpafShDWLBdARy1n/sDFiTvdcqPl6GXBb5kgr45HEuyQEj2DXvvYFuyjy3I6XvY9EAA==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-16T08:07:02Z
batch OT-TS-2026-W38-011 · RFC 3161 token · inclusion proof
root 8f13af7374aef42943b7bbe6a279c57a...

Independent retrieval

2026-09-16T08:00:27.923794ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000005275
observed 4dbdf6dd493705895eda4502ba2b1fa2...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T08:00:27.910756ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000005275/manifest.json
observed 0543d1099f675e221927de338c8c99a7...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T08:00:27.896587ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000005275/publication.md
observed e857bf602e3d58fb9ead425a0e46de7b...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T08:00:27.881458ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000005275/publication.txt
observed 5850498d824c5007d53a2c52919e6ad2...
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.