OT-2026-000004990
Publication integrity record
Porous face vacuum gripper, two zone face, three outlet manifold, ejector fed, pressure verified
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-2026-000004990) never changes.
Identity and time
| Publication number | OT-2026-000004990 · never reused |
|---|---|
| Internal UUID | 01a0a92a-3c83-7387-a1af-fc8dc1bc0363 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-16T07:41:52.645822Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000004990 |
| Status | PUBLIC |
Content hashes
| Canonical text | 1b7d3f4342241c2136dd06454af3f1ee70b033a87e3da24be59400d5c93400ca |
|---|---|
| Markdown | 7a50608d65eaeac1d26511262bcf2161ac8015ad3936f35981847ce978adcde5 |
| Publication page | 61169827fdb8e9fc774158659fb33d2056c808ba490aaf332e763fe492dc911c |
| Manifest | 51f0aa5a85bab542c226f099e8bf2cac283706561f5d2c25b0550b2ccd503030 |
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 | 5XjwcRlovUa9rmrB76YMg0o5+qkibr4mPerja3jkyHrRJCs6oDmi9IqoQvzAiJARskXQcWZjNu48jRtmxBDOAA== |
| 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... |
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Independent retrieval
| 2026-10-28T12:41:45.164285Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004990observed 61169827fdb8e9fc774158659fb33d20...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-28T12:41:45.093399Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004990/manifest.jsonobserved 51f0aa5a85bab542c226f099e8bf2cac...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-28T12:41:45.020037Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004990/publication.mdobserved 7a50608d65eaeac1d26511262bcf2161...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-28T12:41:44.738149Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004990/publication.txtobserved 1b7d3f4342241c2136dd06454af3f1ee...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-20T08:41:54.368977Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004990observed 61169827fdb8e9fc774158659fb33d20...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-20T08:41:54.299058Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004990/manifest.jsonobserved 51f0aa5a85bab542c226f099e8bf2cac...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-20T08:41:54.221804Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004990/publication.mdobserved 7a50608d65eaeac1d26511262bcf2161...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-20T08:41:54.094261Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004990/publication.txtobserved 1b7d3f4342241c2136dd06454af3f1ee...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. |
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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 |
|---|