OpenTechnical

OT-2026-000020175

Publication integrity record

Four bellows cup vacuum gripper, four zone face, plant vacuum fed, pulsed blow-off 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-2026-000020175) never changes.

Identity and time

Publication numberOT-2026-000020175 · never reused
Internal UUID01a0ae6f-4379-77a8-8d19-5914506b0ccd · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:15:22.507199Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000020175
StatusPUBLIC

Content hashes

Canonical textfb2fb65626577a02739ef708896bc16fed1ae7f2f2cc2a850db80114cf71f2a7
Markdown669aa25d5e36a6a4c9ab3017e374dfe258cbd998fb663a4347f708de82f79c8f
PDF
Publication paged992d69d585eae1958fd72aef45265991dd78cd07075e0989ba428b104028284
Manifest101bad317bc167a2a71d67465f9de9bb0df117cff997331776d4df3165669c56

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
SignatureT+WcSWmhpQohcwOXe6rvRVizTNdWiUJmDDIyrdBOCNSWSL5d5adHlPjyIO0R+5SCc299MmnZM3opmM59Q56wBQ==
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

2026-09-17T11:56:29.690135ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020175
observed d992d69d585eae1958fd72aef4526599...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:56:29.671999ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020175/manifest.json
observed 101bad317bc167a2a71d67465f9de9bb...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:56:29.654401ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020175/publication.md
observed 669aa25d5e36a6a4c9ab3017e374dfe2...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:56:29.635864ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020175/publication.txt
observed fb2fb65626577a02739ef708896bc16f...
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.