OpenTechnical

OT-2026-000006689

Publication integrity record

Bellows cup vacuum gripper, four zone face, pump fed, pressure verified, vented before 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-2026-000006689) never changes.

Identity and time

Publication numberOT-2026-000006689 · never reused
Internal UUID01a0a964-0395-770f-b79e-4f087354a8fd · UUIDv7, RFC 9562
Publication timestamp2026-09-16T08:44:59.160610Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000006689
StatusPUBLIC

Content hashes

Canonical textda3a9873c8eba41a24ce30006faf507f3ef524c97a28b01b18bf0f7f71089a34
Markdown96172307e5cd60a2c734c8f84f4f2b546bfef931baf4bc96e09b12cc50e2be12
PDF
Publication page2479d9913f99839637857b9f5236bbc43442b845dfa576fdbe2915245988ee78
Manifest75da6ce2df8ab6750a11d1ded78f0a41e0fe7a577cb62497971087b6625a3fde

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
SignatureT7jDwMTSKASbwX8ctxEtVxphZb57UQ3CYMtK3eWYCAei6hXSU+O3OKJQ4KcEh2OwkXK7avNyMX8k2gSCWTWAAw==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-16T08:47:03Z
batch OT-TS-2026-W38-013 · RFC 3161 token · inclusion proof
root e368e9c5ab06dc5cb1b0682dd54c11f5...

Independent retrieval

2026-09-16T08:50:16.993382ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000006689
observed 2479d9913f99839637857b9f5236bbc4...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T08:50:16.979760ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000006689/manifest.json
observed 75da6ce2df8ab6750a11d1ded78f0a41...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T08:50:16.967064ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000006689/publication.md
observed 96172307e5cd60a2c734c8f84f4f2b54...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T08:50:16.954188ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000006689/publication.txt
observed da3a9873c8eba41a24ce30006faf507f...
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.