OpenTechnical

OT-2026-000028767

Publication integrity record

Four bellows cup vacuum gripper, four zone face, per zone isolation, two stage ejector, pulsed blow-off before 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-2026-000028767) never changes.

Identity and time

Publication numberOT-2026-000028767 · never reused
Internal UUID01a0ae73-2252-791c-81ec-b91cda9a8dbe · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:19:36.158293Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000028767
StatusPUBLIC

Content hashes

Canonical textc39070933bec727ed58e110547fa9ec3247e9aaac9d1213e269ebffa2d92f946
Markdownc9d7084205440bca30c1484d7bc0a0a12e5afccb7d41697f50713a7704a9d440
PDF
Publication page6cfcb37120533b4e78357760faaa0f7310f63e7c96af42957f8fa2d47593c886
Manifest909d983d40f54e346091830058c0be281cef4a7000da312ac728d0397fb1da7b

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
SignatureqkzA2BpbvHJxWZv/YdQaQYiLjwLKnw4bmRcZfiHwmVDHBMqXdk/rEHGJKE/d3K15LK/Q6+5G6NNfd6QPcf9EBA==
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

2026-09-17T11:39:59.287810ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028767
observed 6cfcb37120533b4e78357760faaa0f73...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:39:59.270375ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028767/manifest.json
observed 909d983d40f54e346091830058c0be28...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:39:59.253676ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028767/publication.md
observed c9d7084205440bca30c1484d7bc0a0a1...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:39:59.237253ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028767/publication.txt
observed c39070933bec727ed58e110547fa9ec3...
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.