OpenTechnical

OT-2026-000090417

Publication integrity record

Three cup vacuum gripper, three zone face, plant vacuum fed, pressure sensor per zone, 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-2026-000090417) never changes.

Identity and time

Publication numberOT-2026-000090417 · never reused
Internal UUID01a0ae9c-7f2d-7d82-a642-144267c9f118 · 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-2026-000090417
StatusPUBLIC

Content hashes

Canonical text2d78ee4803b3b7cbba3bd858d14e5e1e28f9a71b893be458b3a3ce22554537c8
Markdownc2ed07eeec566ae47906af120956bf3f431ef7a12cf923dd7f53f4a368acd347
PDF
Publication pagebc0f65c5475ae936cd1683e4d88e9771bc01eef7bfbaf02e5f52e838edbc9fe5
Manifest4485295597c817d4594eb77e50115cb16c3015f89eb96c624b2f79a91ed4fe19

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
SignatureFtqA3EDLUHtjFJ0dpd8XFHbk0357XEvNlJ2ubw07LYpY1PjdLZOT46gnevz5o43Vvg9PCHTo6thO5lMNAsZMCQ==
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

2026-09-17T09:44:31.907906ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090417
observed bc0f65c5475ae936cd1683e4d88e9771...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:44:31.889381ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090417/manifest.json
observed 4485295597c817d4594eb77e50115cb1...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:44:31.871492ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090417/publication.md
observed c2ed07eeec566ae47906af120956bf3f...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T09:44:31.853576ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000090417/publication.txt
observed 2d78ee4803b3b7cbba3bd858d14e5e1e...
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.