OpenTechnical

OT-2026-000081492

Publication integrity record

Three bellows cup vacuum gripper, three outlet manifold, pump fed, supply line pressure sensor, vented after 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-2026-000081492) never changes.

Identity and time

Publication numberOT-2026-000081492 · never reused
Internal UUID01a0ae97-0f70-7c20-a4af-5fd013a22e1e · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:58:50.648824Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000081492
StatusPUBLIC

Content hashes

Canonical texteb27c703e91035e7d933bbabc5262c6d43716bc67fbd676c0e3c06de032245e4
Markdown6bd93ab9bca4c3bafca2ae7a1e1e939a80d1c196484209e19ea81265572313c6
PDF
Publication pagea66857c49beeb2e5f2d22af43a4f391144bf2d3e08f9a2b1ac4e58d23b8cd201
Manifest36e8822e5ea609fda14aa4fdcbbb6361dd9502ede293fbc73966158aff91c414

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
SignaturedvU5Oi1/hnZl3e/zldGIu8RHtJ184HEsUZO8tayvchfmvbN4pVU5n949HZqrep2z8BMzEuwYpSd8VAR8hGnrBA==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-17T09:07:03Z
batch OT-TS-2026-W38-022 · RFC 3161 token · inclusion proof
root 061e9ae86cc297cdce873398aaec3f72...

Independent retrieval

2026-09-17T09:59:30.139530ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000081492
observed a66857c49beeb2e5f2d22af43a4f3911...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:59:30.120953ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000081492/manifest.json
observed 36e8822e5ea609fda14aa4fdcbbb6361...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:59:30.064447ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000081492/publication.md
observed 6bd93ab9bca4c3bafca2ae7a1e1e939a...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:59:29.967326ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000081492/publication.txt
observed eb27c703e91035e7d933bbabc5262c6d...
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.