OT-2026-000003181
Publication integrity record
Vacuum handling apparatus
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-2026-000003181) never changes.
Identity and time
| Publication number | OT-2026-000003181 · never reused |
|---|---|
| Internal UUID | 01a0a699-f9cd-76b7-afaf-0aec2544945d · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:45:03.949873Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000003181 |
| Status | PUBLIC |
Content hashes
| Canonical text | 4e81121d84f3cc37cb896e5bf64c296e24a08e77bc3269f90506da05910a7468 |
|---|---|
| Markdown | 6eb226ba35a4018b21e0b03edf19eca00838eaea5a2086fc5365cf0c91462b4b |
| Publication page | fe312aa9fe991f4246c9dcc72ebddb27ea737ac50222ed2e93b11a495970b3aa |
| Manifest | e2a937e8c823d7f580e9798b4317166b810c67d106a64a509fef4494c420a371 |
SHA-256, lowercase hex, over the exact bytes of each published file. Every figure is hashed individually in the manifest.
Manifest signature
| Algorithm | Ed25519 · key
OT-SIGN-2026-01 · Verified |
|---|---|
| Signature | mrJNlH+Q9XkYuZSy9Wli2N/Yi8wbAwUYGYoofSI9xmWYgIiyad0WirKJZVTQM4UnUuATnphI7KaEzXhh+zbBBA== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T19:47:02Z batch OT-TS-2026-W38-003 · RFC 3161 token · inclusion proof root 713cd89b73be422b38f7894d4fb6a755... |
|---|
Independent retrieval
| 2026-10-24T00:41:27.450896Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003181observed fe312aa9fe991f4246c9dcc72ebddb27...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-24T00:41:27.381364Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003181/manifest.jsonobserved e2a937e8c823d7f580e9798b4317166b...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-24T00:41:27.189510Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003181/publication.mdobserved 6eb226ba35a4018b21e0b03edf19eca0...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-24T00:41:27.033662Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003181/publication.txtobserved 4e81121d84f3cc37cb896e5bf64c296e...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:50:05.343963Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003181observed fe312aa9fe991f4246c9dcc72ebddb27...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:50:05.314816Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003181/manifest.jsonobserved e2a937e8c823d7f580e9798b4317166b...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:50:05.177142Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003181/publication.txtobserved 4e81121d84f3cc37cb896e5bf64c296e...fetched by instance-3.rotem.ai from 127.0.0.1, 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 archive | Pending 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
| OT-CUSTODY-2026-W38 | OpenTechnical-Custody-2026-W38.tar.zstf2fc69d02142424a578267e5e3a6d3bb... · 402,218,449 bytes · held by held on site pending an external custodian · retention permanent |
|---|