OT-2026-000021629
Publication integrity record
Single cup vacuum gripper, common isolation valve, pump fed, 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-2026-000021629) never changes.
Identity and time
| Publication number | OT-2026-000021629 · never reused |
|---|---|
| Internal UUID | 01a0ae6f-bb59-7ec8-81c2-886f60c72460 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-17T08:15:53.201585Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000021629 |
| Status | PUBLIC |
Content hashes
| Canonical text | e5bada255e962f9d6867370499ebd745c1dd9935cca8b97419e4c63681c30ff5 |
|---|---|
| Markdown | 40c124a8a73f75ab322e05b41eeab56080b516a5122cead6bd0ea71b836dcbed |
| Publication page | 208f672cabb848ec0507b03c9af125a4f3634cb56982a6660f3b3bff6982cc8e |
| Manifest | 2190521f9f6a180aeb9ad9fdfc17a996d67e9fc2b10abf4660d34691dca25083 |
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 | rZCp0LMzQnUtvdBw67WZoGlbudL9nwh8W/fsthuL6tT42zhY4+FP2bDXgditqTMa+ozP4oY+t/xVc/viiMwLCA== |
| 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
| 2026-10-19T08:41:11.355839Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000021629observed 208f672cabb848ec0507b03c9af125a4...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-19T08:41:11.256751Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000021629/manifest.jsonobserved 2190521f9f6a180aeb9ad9fdfc17a996...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-19T08:41:11.188553Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000021629/publication.mdobserved 40c124a8a73f75ab322e05b41eeab560...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-19T08:41:10.935097Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000021629/publication.txtobserved e5bada255e962f9d6867370499ebd745...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-10T20:41:03.080751Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000021629observed 208f672cabb848ec0507b03c9af125a4...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-10T20:41:02.981430Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000021629/manifest.jsonobserved 2190521f9f6a180aeb9ad9fdfc17a996...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-10T20:41:02.888219Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000021629/publication.mdobserved 40c124a8a73f75ab322e05b41eeab560...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-10T20:41:02.768796Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000021629/publication.txtobserved e5bada255e962f9d6867370499ebd745...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 |
|---|