OT-2026-000090572
Publication integrity record
Four bellows cup vacuum gripper, four zone face, plant vacuum fed, pressure sensor per zone, sustained blow-off before set-down, on a tool changer
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-2026-000090572) never changes.
Identity and time
| Publication number | OT-2026-000090572 · never reused |
|---|---|
| Internal UUID | 01a0ae9c-7f2f-700e-9c8f-124eef10f6ab · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-17T09:04:46.997728Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000090572 |
| Status | PUBLIC |
Content hashes
| Canonical text | e2dc32218cf6c1438829dfe3131bfb5c4e0b25b77b577e82c2f50fba68b2d5b4 |
|---|---|
| Markdown | 4f68f29b0ba51be00f196e7f2362d215dbac2cb7ff4410bd1553182522c996e4 |
| Publication page | 4e89f22b572f07a03db7b6a5b5a9288501a3de06833b0a0298281671ecd9c446 |
| Manifest | 42613b26b2dbc7cb0613d14ec1753fe0e0a4bec9daa133d5f92f2b3970385bf1 |
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 | GVHlSrA2wrqnymt+vRC1HG2+FhSD3k5fJsetvuuszO7rHh+3U6r2u+Vpe3HjFG3xN7tcpBUEMxUBtJL01qBFDA== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-17T09:07:03Z batch OT-TS-2026-W38-022 · RFC 3161 token · inclusion proof root 061e9ae86cc297cdce873398aaec3f72... |
|---|
Independent retrieval
| 2026-10-28T20:41:54.807640Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000090572observed 4e89f22b572f07a03db7b6a5b5a92885...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-28T20:41:54.738851Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000090572/manifest.jsonobserved 42613b26b2dbc7cb0613d14ec1753fe0...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-28T20:41:54.665236Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000090572/publication.mdobserved 4f68f29b0ba51be00f196e7f2362d215...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-28T20:41:54.583854Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000090572/publication.txtobserved e2dc32218cf6c1438829dfe3131bfb5c...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-13T16:41:57.733300Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000090572observed 4e89f22b572f07a03db7b6a5b5a92885...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-13T16:41:57.634581Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000090572/manifest.jsonobserved 42613b26b2dbc7cb0613d14ec1753fe0...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-13T16:41:57.535950Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000090572/publication.mdobserved 4f68f29b0ba51be00f196e7f2362d215...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-13T16:41:57.426177Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000090572/publication.txtobserved e2dc32218cf6c1438829dfe3131bfb5c...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 |
|---|