OT-2026-000004899
Publication integrity record
Porous face vacuum gripper, four zone face, plant vacuum fed, contact triggered on the face
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-2026-000004899) never changes.
Identity and time
| Publication number | OT-2026-000004899 · never reused |
|---|---|
| Internal UUID | 01a0a927-1db1-7584-ab30-f0bfd6ee555b · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-16T07:38:28.149705Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000004899 |
| Status | PUBLIC |
Content hashes
| Canonical text | 3959c8b3d5b45b8a985f48d948d274ee00170f921ba940f5b14dfee7bcc5f7bd |
|---|---|
| Markdown | 1e06a05bd0fbff6c895f2b1ac2a14c5acf442d3cb5f1df03ba62683c60465417 |
| Publication page | 9f40fd2d52fa03b8fba45f1a3f30a350410ee4b1fdb3dda148dcb56997216f7a |
| Manifest | 3e60aa79a4787e676e15615ec76f95456dbf44642f4afee6eeadb7f583d7a132 |
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 | NYYPEbc/Rb602YSuGLWFJ9S7tDUMR32dO4Nm3odx/w/QarfJ36yqYYzqeLNeGY3PYVITPtrUl8Xuu0mbgNZJDQ== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-16T07:47:02Z batch OT-TS-2026-W38-010 · RFC 3161 token · inclusion proof root e1b42dfa4cd0fb1e3e472afd2db961c2... |
|---|
Independent retrieval
| 2026-10-22T00:42:09.129969Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004899observed 9f40fd2d52fa03b8fba45f1a3f30a350...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-22T00:42:09.076229Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004899/manifest.jsonobserved 3e60aa79a4787e676e15615ec76f9545...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-22T00:42:09.009956Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004899/publication.mdobserved 1e06a05bd0fbff6c895f2b1ac2a14c5a...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-22T00:42:08.867137Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004899/publication.txtobserved 3959c8b3d5b45b8a985f48d948d274ee...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-23T04:23:27.214938Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004899observed 9f40fd2d52fa03b8fba45f1a3f30a350...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-23T04:23:27.202931Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004899/manifest.jsonobserved 3e60aa79a4787e676e15615ec76f9545...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-23T04:23:27.189633Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004899/publication.mdobserved 1e06a05bd0fbff6c895f2b1ac2a14c5a...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-23T04:23:27.085515Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004899/publication.txtobserved 3959c8b3d5b45b8a985f48d948d274ee...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 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 |
|---|