OpenTechnical

OT-2026-000028288

Publication integrity record

Single bellows cup vacuum gripper, two stage ejector, 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-2026-000028288) never changes.

Identity and time

Publication numberOT-2026-000028288 · never reused
Internal UUID01a0ae72-e2f5-7d62-8e01-cb8ce6eb5b90 · 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-2026-000028288
StatusPUBLIC

Content hashes

Canonical text1f3e2a7fb7f6df7f380b59fad968e6d0a10bae538d6232f286cb311f2cd686c8
Markdowne0cf1456b08947d5501f5421fcc0cbf4fcedff6582915f37ed18d74853d45fe1
PDF
Publication page8680b20f19927f808198f91085c4b39f500c273e361c97fe070be7159bdf7902
Manifest0a205512038a51d1fda2aa040173e08a897619e640ed174be79271f885ca63ca

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
SignatureRh/2VtdIk8zLpN3Lr7wL7quyh9a9vgPpUloGuu3Zn61kSvtN/R7Tf1p0Ab90cCTpwONSNcHaKLREuB0i8L9JBw==
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

2026-09-17T11:40:10.094385ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028288
observed 8680b20f19927f808198f91085c4b39f...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:40:10.073906ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028288/manifest.json
observed 0a205512038a51d1fda2aa040173e08a...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:40:10.056423ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028288/publication.md
observed e0cf1456b08947d5501f5421fcc0cbf4...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:40:10.037473ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028288/publication.txt
observed 1f3e2a7fb7f6df7f380b59fad968e6d0...
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.