OpenTechnical

OT-2026-000013999

Publication integrity record

Four bellows cup vacuum gripper, four zone face, per zone isolation, 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-2026-000013999) never changes.

Identity and time

Publication numberOT-2026-000013999 · never reused
Internal UUID01a0ae6d-8dea-7aae-bb1e-ab3334782c41 · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:13:30.489074Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000013999
StatusPUBLIC

Content hashes

Canonical text46ca56ffe7a5674796b1278e9bbd37ea8f76cb32393c92235066125cda269a85
Markdown0f635093281438c303199326f370f82355e52251f869d1d2975c9d4202e387ba
PDF
Publication page5bff123154eb9524ce5c6ad8cea30048ce4790fb9d0bdee8d371cd510ab3ba65
Manifest2dc9e45b0aadab630790b3dbb862e5a9521eaa34765740ef0b4e1165eedeab35

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
SignatureTIvOkB9HEjyt2dqHsCKPU27eiaozhHcztV2Sj5f6B36kxrwEajPeUpSoLIgoqleBi9ow/FwLfJmE0DFfUIrDBQ==
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

2026-09-17T12:09:13.230469ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000013999
observed 5bff123154eb9524ce5c6ad8cea30048...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T12:09:13.211184ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000013999/manifest.json
observed 2dc9e45b0aadab630790b3dbb862e5a9...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T12:09:13.188964ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000013999/publication.md
observed 0f635093281438c303199326f370f823...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T12:09:13.168685ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000013999/publication.txt
observed 46ca56ffe7a5674796b1278e9bbd37ea...
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.