OpenTechnical

OT-2026-000074090

Publication integrity record

Single bellows cup vacuum gripper, common isolation valve, pump fed, supply line pressure sensor, vented 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-2026-000074090) never changes.

Identity and time

Publication numberOT-2026-000074090 · never reused
Internal UUID01a0ae93-2b8f-7866-abfa-9e9006a712a9 · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:54:35.679268Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000074090
StatusPUBLIC

Content hashes

Canonical text1b92dd7e987a509ab68c0bb89a6922d3b7d28193a56dcb99a8ce1d37361ef476
Markdown394e345002e88e436f5b6fcff346cb6c61d896751771851d0fc775bc70057739
PDF
Publication pagecc7184a6cd85b0ab1553d24249531d729560f8c20b90e9b44de508f73ee6b195
Manifestcbdd516848382bbd7d3ef4f390f0873319cf58fb6c3848775716bb9d62d7ad8e

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
SignatureYBw4ClldocgxgjlQhq0yyn3gaRoaiHF2Te4pRcQ9CYoQqgqc/L2wc3s+g2irwUjwLJJxbCDiMDJu6SMpqgmUAw==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-17T09:07:03Z
batch OT-TS-2026-W38-022 · RFC 3161 token · inclusion proof
root 061e9ae86cc297cdce873398aaec3f72...

Independent retrieval

2026-09-17T10:20:59.813843ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000074090
observed cc7184a6cd85b0ab1553d24249531d72...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T10:20:59.795791ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000074090/manifest.json
observed cbdd516848382bbd7d3ef4f390f08733...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T10:20:59.778091ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000074090/publication.md
observed 394e345002e88e436f5b6fcff346cb6c...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T10:20:59.759154ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000074090/publication.txt
observed 1b92dd7e987a509ab68c0bb89a6922d3...
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.