OT-2026-000004490
Publication integrity record
Porous face vacuum gripper, four zone face, common isolation valve, pump fed
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-2026-000004490) never changes.
Identity and time
| Publication number | OT-2026-000004490 · never reused |
|---|---|
| Internal UUID | 01a0a919-bf02-74a6-ab15-8395c103e8b1 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-16T07:23:51.942562Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000004490 |
| Status | PUBLIC |
Content hashes
| Canonical text | bd310b94064f50317b89b180eeab98206cc8dab0ead74883f36fa8e1dcde9580 |
|---|---|
| Markdown | b20cef6de33c7eaedffb2fd37fd65831385a599016361274ae7d915425a272ed |
| Publication page | d91b0886a479f4e9d3cdc65c85b0010d8acf08117188821153bdfa945863fb72 |
| Manifest | db501b1368ee697b1a4ebca54a0e77877e8c2e52f074b5cdf12be358085460e6 |
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 | jR/O1i/4ghnBBJBYxVFiiqhYU+n/clcnpbBJ54kCrZnSWr8leexyUwLt8+25hewb0sHKELvDMzkJIfo4+dFuDw== |
| 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
| 2026-09-17T08:44:00.980254Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004490observed d91b0886a479f4e9d3cdc65c85b0010d...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-17T08:44:00.735304Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004490/manifest.jsonobserved db501b1368ee697b1a4ebca54a0e7787...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-17T08:44:00.576146Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004490/publication.mdobserved b20cef6de33c7eaedffb2fd37fd65831...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-17T08:44:00.242132Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004490/publication.txtobserved bd310b94064f50317b89b180eeab9820...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T16:41:43.581914Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004490observed d91b0886a479f4e9d3cdc65c85b0010d...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T16:41:43.414332Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004490/manifest.jsonobserved db501b1368ee697b1a4ebca54a0e7787...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T16:41:43.263378Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004490/publication.mdobserved b20cef6de33c7eaedffb2fd37fd65831...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T16:41:43.094132Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004490/publication.txtobserved bd310b94064f50317b89b180eeab9820...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 |
|---|