OT-2026-000003956
Publication integrity record
Vacuum cup gripper, two zone face, pump fed, contact triggered on the face, polyurethane cups
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-2026-000003956) never changes.
Identity and time
| Publication number | OT-2026-000003956 · never reused |
|---|---|
| Internal UUID | 01a0a90b-9470-7e22-8fdb-81b8cff40fa9 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-16T07:08:23.538589Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000003956 |
| Status | PUBLIC |
Content hashes
| Canonical text | f1ff0c48e560a3ea89e3b25ed1ccd79431c97247352fc6ddd83679340272dfdb |
|---|---|
| Markdown | aee5daea9a02b6b38d44a9596ec67e196e548227e70c3f8eadc561d006214a14 |
| Publication page | 5a1be2a37f22fdb2687aa6757928879e6cebaadf870590ad7b148e5645660f14 |
| Manifest | 1eadf74a3cc7526ea6eb14dd5d5cdfa3b6781f04f47c8b8d8a48e1c4dadbf3dc |
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 | rb96ZMlQ906dEL1PS+bfnPg1V44MfIzogubW0aFNWPOIflWBE7rw6DAWB1x+iDdpSkTqn0dKZHTOZCLZQnnaAw== |
| 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
| 2026-10-27T16:41:15.132448Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003956observed 5a1be2a37f22fdb2687aa6757928879e...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-27T16:41:15.060774Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003956/manifest.jsonobserved 1eadf74a3cc7526ea6eb14dd5d5cdfa3...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-27T16:41:14.991346Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003956/publication.mdobserved aee5daea9a02b6b38d44a9596ec67e19...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-27T16:41:14.766337Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003956/publication.txtobserved f1ff0c48e560a3ea89e3b25ed1ccd794...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-28T04:42:12.735612Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003956observed 5a1be2a37f22fdb2687aa6757928879e...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-28T04:42:12.595393Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003956/manifest.jsonobserved 1eadf74a3cc7526ea6eb14dd5d5cdfa3...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-28T04:42:12.526891Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003956/publication.mdobserved aee5daea9a02b6b38d44a9596ec67e19...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-28T04:42:12.369551Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003956/publication.txtobserved f1ff0c48e560a3ea89e3b25ed1ccd794...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 |
|---|