OT-2026-000004234
Publication integrity record
Porous face vacuum gripper, four zone face, per zone isolation, pump fed, contact triggered
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-2026-000004234) never changes.
Identity and time
| Publication number | OT-2026-000004234 · never reused |
|---|---|
| Internal UUID | 01a0a911-eb5d-7aa4-a736-bd2890539749 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-16T07:15:19.009120Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000004234 |
| Status | PUBLIC |
Content hashes
| Canonical text | 06c2091634932093041609760f3656176bfdc7951934aa138736b81ebcefa60c |
|---|---|
| Markdown | ded34298707f18720a25e2d1b0c447d6cba05ac2f4fa34d05c6c361939d3a6bb |
| Publication page | d1fae5a3bc6e1c9b59cae638ced09d22d43f8e6501182a016832cd6cbde03b5d |
| Manifest | d8733fec1057483f1b24fe7b6ebfd408d8edc4c82a375f8ed1f3b30dd6fcbba3 |
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 | AUPZ1WzoKlERb1weTKRWebRPNKNgwPQwn5PWEO2XYhBq0UIuMm/4yRXg40H/f3ejvaCTBdISjmF+yYwCZ23UCA== |
| 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
| 2026-10-25T04:41:36.707390Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004234observed d1fae5a3bc6e1c9b59cae638ced09d22...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-25T04:41:36.659520Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004234/manifest.jsonobserved d8733fec1057483f1b24fe7b6ebfd408...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-25T04:41:36.610968Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004234/publication.mdobserved ded34298707f18720a25e2d1b0c447d6...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-25T04:41:36.501259Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004234/publication.txtobserved 06c2091634932093041609760f365617...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-18T16:41:29.014093Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004234observed d1fae5a3bc6e1c9b59cae638ced09d22...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-18T16:41:28.964002Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004234/manifest.jsonobserved d8733fec1057483f1b24fe7b6ebfd408...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-18T16:41:28.905785Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004234/publication.mdobserved ded34298707f18720a25e2d1b0c447d6...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-18T16:41:28.750993Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004234/publication.txtobserved 06c2091634932093041609760f365617...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 |
|---|