OpenTechnical

OT-2026-000029507

Publication integrity record

Three bellows cup vacuum gripper, three zone face, common isolation valve, pump fed, pulsed 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-2026-000029507) never changes.

Identity and time

Publication numberOT-2026-000029507 · never reused
Internal UUID01a0ae73-5e21-7fd0-a980-20ea93ae1e63 · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:19:51.545382Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000029507
StatusPUBLIC

Content hashes

Canonical text123ff9f3f256f01a69e8432f94dffa243c70ff2038dbd3d30e54729bea377669
Markdown838c3a02bc5b364fe2f378a69fcb42f2b01a4adbb1c09fc7872d51438bebfdbc
PDF
Publication page534322d544ebf05e6b38451f6099b567756be42e86cdd6a5d8ceea32870b175b
Manifest0231dbf074b61b2446603442fa7d7b7c448b4da5b397d837e6307657b36e852d

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
SignatureluT4HDRRYCoe0pL21lsvQ0R7RMtvN/TgN5NOrRDbT1PRZR6ktwH8ZDXtnOEwakKH2d8sGUTTjyQSZvwHTGR0DQ==
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

2026-09-17T11:39:08.606360ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000029507
observed 534322d544ebf05e6b38451f6099b567...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:39:08.587882ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000029507/manifest.json
observed 0231dbf074b61b2446603442fa7d7b7c...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:39:08.569716ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000029507/publication.md
observed 838c3a02bc5b364fe2f378a69fcb42f2...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:39:08.549820ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000029507/publication.txt
observed 123ff9f3f256f01a69e8432f94dffa24...
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.