OpenTechnical

OT-2026-000006215

Publication integrity record

Vacuum cup gripper, two stage ejector, pressure verified, contact triggered, vented after 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-2026-000006215) never changes.

Identity and time

Publication numberOT-2026-000006215 · never reused
Internal UUID01a0a953-37c5-72ba-a0d4-3c8398ef8962 · UUIDv7, RFC 9562
Publication timestamp2026-09-16T08:26:38.407954Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000006215
StatusPUBLIC

Content hashes

Canonical texta126785fe63998db168d263787aeceeabaebbebee09c1e3c006ed3d74c3110a3
Markdownca8c36283d3efbd0d637ce9d1f1d563dd2d308900b9617ef11d9d0ff4d875353
PDF
Publication pagea5e428c39f63909c15780cb15cd64360f3e99ff6a558c6b847ced444af0b9fc6
Manifest9d00a2527fd6d54f83ad7ebf9abc515dcd629290043c6d395d30035a1231135a

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
SignaturetrHcFSt9jhPPTJ4E5JzVCeT0eR/jK/lMk5Mh4t10GNzmBnANs4yEdn3gioD1IUbo65ATH/Gg+4UDw0d+9jw4AQ==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-16T08:27:03Z
batch OT-TS-2026-W38-012 · RFC 3161 token · inclusion proof
root dbe93cb6b2158496df2f60f3b6822537...

Independent retrieval

2026-09-16T08:30:14.165658ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000006215
observed a5e428c39f63909c15780cb15cd64360...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T08:30:14.152404ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000006215/manifest.json
observed 9d00a2527fd6d54f83ad7ebf9abc515d...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T08:30:14.138948ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000006215/publication.md
observed ca8c36283d3efbd0d637ce9d1f1d563d...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T08:30:14.125456ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000006215/publication.txt
observed a126785fe63998db168d263787aeceea...
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.