OT-2026-000003993
Publication integrity record
Vacuum cup gripper, per zone isolation, plant vacuum fed, contact triggered, vented before set down
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-2026-000003993) never changes.
Identity and time
| Publication number | OT-2026-000003993 · never reused |
|---|---|
| Internal UUID | 01a0a90c-8523-7dc1-a0c2-c0260f276dc9 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-16T07:09:25.157644Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000003993 |
| Status | PUBLIC |
Content hashes
| Canonical text | 2887ade0ab8c18f896701d5b1da1ee20f140419c907a868ef04f410ea8468b89 |
|---|---|
| Markdown | c3261df27261051f42ca717fbf16527a5800f7fa5b78ad4a7b4bd0f1bb9c73c1 |
| Publication page | 3e930c54e507c14590a5cb34f58f9208ee8635f5c8b0e73011f30d4d633bae34 |
| Manifest | 9a40c3d68b10665c4f4493c9ab98b24ba60a04184a0f839d438fe7a9cff1d970 |
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 | DUxDe8BPPWvHEQ9OyEF9YQDezEmRanU+3eP2AW1vHaLEP2PBR2IIc32c0TuY307o+Z+qUjqo+jPNQKuoCIi+Cw== |
| 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
| 2026-09-30T08:41:51.822097Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003993observed 3e930c54e507c14590a5cb34f58f9208...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-30T08:41:51.768656Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003993/manifest.jsonobserved 9a40c3d68b10665c4f4493c9ab98b24b...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-30T08:41:51.717213Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003993/publication.mdobserved c3261df27261051f42ca717fbf16527a...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-30T08:41:51.539171Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003993/publication.txtobserved 2887ade0ab8c18f896701d5b1da1ee20...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-22T12:41:17.140126Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003993observed 3e930c54e507c14590a5cb34f58f9208...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-22T12:41:17.051888Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003993/manifest.jsonobserved 9a40c3d68b10665c4f4493c9ab98b24b...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-22T12:41:17.000106Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003993/publication.mdobserved c3261df27261051f42ca717fbf16527a...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-22T12:41:16.887165Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003993/publication.txtobserved 2887ade0ab8c18f896701d5b1da1ee20...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 |
|---|