OpenTechnical

OT-2026-000090615

Publication integrity record

Two bellows cup vacuum gripper, two zone face, per zone isolation, plant vacuum fed, pressure sensor per zone, sustained 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-2026-000090615) never changes.

Identity and time

Publication numberOT-2026-000090615 · never reused
Internal UUID01a0ae9c-7f30-77ac-92d4-ec4a03057008 · UUIDv7, RFC 9562
Publication timestamp2026-09-17T09:04:46.997728Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000090615
StatusPUBLIC

Content hashes

Canonical text59077498fae269f8be18d88f2d23450eb2f71722e7aada7017869c7dfe95a762
Markdown2e3a87690bd0f0eef4d6907f4880296d99f36f4535599e4ce72b95f0ad53c2ca
PDF
Publication page4a756f045d231f8069a1c716ac53dc9914ecb9c65cff3af90c77e8d4c7930712
Manifest630b958d6c2dbe27d3fe9c58a49e3a72bdbca915ca98882ae749aa0aae529771

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
SignatureCNcN5ceVAXRqe2EZU/lHyxJ6OubJLu7lgZLE2wDuwvitOCaSWyQ8ydLyi/nGP+0cZcRzplB2ZxwHrzNf8OjyBw==
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

2026-09-17T09:44:48.334947ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090615
observed 4a756f045d231f8069a1c716ac53dc99...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:44:48.319684ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090615/manifest.json
observed 630b958d6c2dbe27d3fe9c58a49e3a72...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:44:48.303407ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090615/publication.md
observed 2e3a87690bd0f0eef4d6907f4880296d...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:44:48.286052ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090615/publication.txt
observed 59077498fae269f8be18d88f2d23450e...
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.