OpenTechnical

OT-2026-000021677

Publication integrity record

Four cup vacuum gripper, four outlet manifold, two stage ejector, 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-2026-000021677) never changes.

Identity and time

Publication numberOT-2026-000021677 · never reused
Internal UUID01a0ae6f-bb59-7097-9b72-9ca689c6a585 · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:15:53.201585Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000021677
StatusPUBLIC

Content hashes

Canonical textd0208b202f8bda705f5400f98af195d2ee448f19f5cd52f5e526c2d119841512
Markdownd8520da487aed75420a13a72a9610c45f140319a813dd3bada40b00cc846746d
PDF
Publication paged4215814fc34c8a81230aa2b7f88a7bd6b5730a9d32dd1e931a312c1edcd9837
Manifest9f660b31f220c76f09fa60ed358b6b3db4227249608065d00c8c3d83a8041cca

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
SignatureR93gQr7NJlK0sVyb00xdulVboeEaueZEKHE8/enDy1jIJjZVjvIzrpcLJzyyq68aE4ryWDdvyQJyRU0389qXBg==
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

2026-09-17T11:54:12.642248ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000021677
observed d4215814fc34c8a81230aa2b7f88a7bd...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:54:12.625311ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000021677/manifest.json
observed 9f660b31f220c76f09fa60ed358b6b3d...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:54:12.605608ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000021677/publication.md
observed d8520da487aed75420a13a72a9610c45...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:54:12.588093ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000021677/publication.txt
observed d0208b202f8bda705f5400f98af195d2...
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.