OpenTechnical

OT-2026-000028430

Publication integrity record

Three pad foam vacuum gripper, three outlet manifold, two stage ejector, manifold pressure sensor, sustained blow-off 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-2026-000028430) never changes.

Identity and time

Publication numberOT-2026-000028430 · never reused
Internal UUID01a0ae72-e2f6-7ae5-8fcf-08283d17d417 · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:19:19.949572Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000028430
StatusPUBLIC

Content hashes

Canonical text21c8ae6c7578d71d7e19220fd8dc44bbea3bbfdfae7853558cb2869bbc737036
Markdown1abd9813c0da66312ba40c2768cd0c07793534f991e806cadbef291cecb5a8c0
PDF
Publication paged158b1d59e655eabb7be7db3e75d73d45a3a679a1b922a1e2a57d0abe9cb50c8
Manifest7a565472fdfd213edf3fd3dbabef434e6d5815a787959df26cfb7ac577001453

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
SignatureA46BvdNzVifIzkzuIWUj0u+0VpwPnTXbxmY535YE9E5P+dhF1kj6wdoWQNMpVPhTY9c3zwzQ3EmLMh0rcjruCA==
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

2026-09-17T11:40:33.845418ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028430
observed d158b1d59e655eabb7be7db3e75d73d4...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:40:33.824352ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028430/manifest.json
observed 7a565472fdfd213edf3fd3dbabef434e...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:40:33.803963ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028430/publication.md
observed 1abd9813c0da66312ba40c2768cd0c07...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:40:33.786152ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028430/publication.txt
observed 21c8ae6c7578d71d7e19220fd8dc44bb...
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.