OpenTechnical

OT-2026-000031588

Publication integrity record

Single bellows cup vacuum gripper, pump fed, supply line pressure sensor, 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-2026-000031588) never changes.

Identity and time

Publication numberOT-2026-000031588 · never reused
Internal UUID01a0ae74-87af-78ff-8b0d-e795ba8a6f77 · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:21:07.653052Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000031588
StatusPUBLIC

Content hashes

Canonical texta8f7439b77a37e306de6fa3878e31ec2244eac8177243e65ac35ce2fa8f5630b
Markdown498f0030981c7cfe01c0ab4f5c5f7275586299c37f3edbc6ab8108ed1d3c374e
PDF
Publication page5f6d9403c6a9c631ab4af92a50aebe1b415638132a05e86d5d4efa9767072d2b
Manifest8fe2e9d02bd445af7c5a6e27a48889ecf75c5f854cdf92d3f36f0d1c91dd506c

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
SignaturelV0hhynBY2oOd1TZKueQzLjV5tIFQg4THqEYAN1HH5G1NJAO/mOuEpPQ38YIohsSv139ik094ZH6L55qRqUBDA==
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

2026-09-17T11:36:26.566765ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000031588
observed 5f6d9403c6a9c631ab4af92a50aebe1b...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:36:26.539431ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000031588/manifest.json
observed 8fe2e9d02bd445af7c5a6e27a48889ec...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:36:26.522569ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000031588/publication.md
observed 498f0030981c7cfe01c0ab4f5c5f7275...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:36:26.505905ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000031588/publication.txt
observed a8f7439b77a37e306de6fa3878e31ec2...
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.