OT-2026-000028725
Publication integrity record
Three cup vacuum gripper, three outlet manifold, common isolation valve, plant vacuum fed, manifold pressure sensor, 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-2026-000028725) never changes.
Identity and time
| Publication number | OT-2026-000028725 · never reused |
|---|---|
| Internal UUID | 01a0ae72-e2fa-793c-a261-f6065cc0080a · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-17T08:19:19.949572Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000028725 |
| Status | PUBLIC |
Content hashes
| Canonical text | 709e9f833e0b0002948f4ce56d9880cf74e025a047f3623a6e02baa6c62ecdd6 |
|---|---|
| Markdown | 61ea809cc21f17f1241f56583aa9f178a76a999855b48207d59f9e84537aa472 |
| Publication page | 471ed7239ca1a619e9c747e32025675e8ca8a199204b7f0efc04a44e753e05aa |
| Manifest | f980b8103b51453f0d4c94cc6eb182276e8f1bf9445d7f8272e714249b7bbbb4 |
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 | PDYKNJ3tJzLtzW/yWI9tjO4u8jTfOrWEkwu+39Fg90aZDha1vNSYlay2sifqZjXxMngQKLb1NhNP+EjCTnkzAw== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-17T08:42:32Z batch OT-TS-2026-W38-020 · RFC 3161 token · inclusion proof root 7c99e0163c3f1d2dc0f1dec0442e2af7... |
|---|
Independent retrieval
| 2026-11-02T04:41:20.091851Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028725observed 471ed7239ca1a619e9c747e32025675e...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-11-02T04:41:20.021251Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028725/manifest.jsonobserved f980b8103b51453f0d4c94cc6eb18227...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-11-02T04:41:19.950097Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028725/publication.mdobserved 61ea809cc21f17f1241f56583aa9f178...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-11-02T04:41:19.877664Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028725/publication.txtobserved 709e9f833e0b0002948f4ce56d9880cf...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-30T00:41:03.236237Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028725observed 471ed7239ca1a619e9c747e32025675e...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-30T00:41:03.177168Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028725/manifest.jsonobserved f980b8103b51453f0d4c94cc6eb18227...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-30T00:41:03.116328Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028725/publication.mdobserved 61ea809cc21f17f1241f56583aa9f178...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-30T00:41:03.043228Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028725/publication.txtobserved 709e9f833e0b0002948f4ce56d9880cf...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 |
|---|