OpenTechnical

OT-2026-000069946

Publication integrity record

Single bellows cup vacuum gripper, pump fed, vented 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-2026-000069946) never changes.

Identity and time

Publication numberOT-2026-000069946 · never reused
Internal UUID01a0ae91-1860-7b72-8c7b-1810f38fa677 · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:52:19.726120Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000069946
StatusPUBLIC

Content hashes

Canonical textdb9974983c533298230a20aa62aee977b61f5662cc53a01a5c82f77fdfb5e85e
Markdownc5bd610f4da537b99977f5b91d0b685c85c392a9788115768a3470aee4c34ecf
PDF
Publication pagee6f026c02b0914e72bb44f7a78d03dbcfc27b71aa5dac3aeec8a52f92342eccd
Manifestfab81e651cd73a65ea197876a070fbe19c8b24eb18ffb10df3be3b3d182586f2

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
Signaturef8IHBHCrn+XS611YipWmL7fYplOIsMqzKsJrZMLqy3SHRu6EfqT82mz60q7Grk1ypHR9nso3LzPfLCl7enjyCQ==
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

2026-09-17T10:26:53.174393ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000069946
observed e6f026c02b0914e72bb44f7a78d03dbc...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T10:26:53.158527ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000069946/manifest.json
observed fab81e651cd73a65ea197876a070fbe1...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T10:26:53.140246ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000069946/publication.md
observed c5bd610f4da537b99977f5b91d0b685c...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T10:26:53.123652ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000069946/publication.txt
observed db9974983c533298230a20aa62aee977...
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.