OT-2026-000004519
Publication integrity record
Porous face vacuum gripper, two zone face, three stage ejector
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-2026-000004519) never changes.
Identity and time
| Publication number | OT-2026-000004519 · never reused |
|---|---|
| Internal UUID | 01a0a91a-ac56-7b87-8d71-23c7cd9e656a · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-16T07:24:52.698353Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000004519 |
| Status | PUBLIC |
Content hashes
| Canonical text | abd3cca5d39477f8abf75e276e42124ec50d56f62dd013ed59d1e40398e6b32d |
|---|---|
| Markdown | 32c437a4afbb0da9674ea0b8e2d9d3334b8566f81d95159b3bb681c67d9f23a5 |
| Publication page | 994ef4d0971db684b6752eaf602098a2a8c5950dca1a18d7f40175511f44457a |
| Manifest | afbc87f682837302f84865f99e3acc86c19b0fcc6280aea33ba9cd5db88d7d2f |
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 | H7CDPsYtoWKsGgaVtYKsPIbFKJeqCVFkBBAXsxeh/F/SQSEb0E40aeY3/ytmNGn0YJe/dUMPWuvJM5mCDB00DQ== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-16T07:27:02Z batch OT-TS-2026-W38-009 · RFC 3161 token · inclusion proof root aada101caea153fd76622afa3661a5b8... |
|---|
Independent retrieval
| 2026-10-08T20:42:11.423273Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004519observed 994ef4d0971db684b6752eaf602098a2...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-08T20:42:11.264470Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004519/manifest.jsonobserved afbc87f682837302f84865f99e3acc86...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-08T20:42:10.863136Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004519/publication.mdobserved 32c437a4afbb0da9674ea0b8e2d9d333...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-08T20:42:10.678212Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004519/publication.txtobserved abd3cca5d39477f8abf75e276e42124e...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-29T08:41:38.201040Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004519observed 994ef4d0971db684b6752eaf602098a2...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-29T08:41:38.112175Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004519/manifest.jsonobserved afbc87f682837302f84865f99e3acc86...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-29T08:41:38.028090Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004519/publication.mdobserved 32c437a4afbb0da9674ea0b8e2d9d333...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-29T08:41:37.903763Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004519/publication.txtobserved abd3cca5d39477f8abf75e276e42124e...fetched by grabo-systems from 34.44.131.203, 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 |
|---|