OpenTechnical

OT-2026-000090715

Publication integrity record

Three bellows cup vacuum gripper, three 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-2026-000090715) never changes.

Identity and time

Publication numberOT-2026-000090715 · never reused
Internal UUID01a0ae9c-7f31-750a-bba6-91011eb006ff · 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-2026-000090715
StatusPUBLIC

Content hashes

Canonical text0fe5f0f95231d6e55a08ca0456ea6adb4032b65e57159138108292d9f15c9686
Markdown8cafde28a5deccaf52556a49db168ed111912947d872ef4172fad9b3dcd9011a
PDF
Publication page79caf237477d269c793e545d28980d362bfe317fe3bb10745d4098097e50a21a
Manifestd63d7d025ce16a2f2da79f62d9f7f42f23a835a9ca83bd1ed628fca39c92def9

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
Signatureqp+VcI3QJTKrHlKl5ehsA8LVqZ3h+zyzvl7X3wm81JiC/KFuxuejgjR62y/zxnX/YwzGO6zgJkvCwY6tuQu4Dg==
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

2026-09-17T09:44:22.048005ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090715
observed 79caf237477d269c793e545d28980d36...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:44:22.031962ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090715/manifest.json
observed d63d7d025ce16a2f2da79f62d9f7f42f...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:44:22.011998ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090715/publication.md
observed 8cafde28a5deccaf52556a49db168ed1...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:44:21.987266ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090715/publication.txt
observed 0fe5f0f95231d6e55a08ca0456ea6adb...
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.