OT-2026-000028340
Publication integrity record
Single bellows cup vacuum gripper, three stage ejector, 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-2026-000028340) never changes.
Identity and time
| Publication number | OT-2026-000028340 · never reused |
|---|---|
| Internal UUID | 01a0ae72-e2f5-77c8-97bf-c15632b1f847 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-17T08:19:19.949572Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000028340 |
| Status | PUBLIC |
Content hashes
| Canonical text | 4e6428a98fc857866b5ececca28b50caeed873e8d1d0e0a27fb6aa4a019df7ca |
|---|---|
| Markdown | b5ee79e2568ef42abdbd3a5fb013cc1224e643295ced3e0b8db335eb839bad52 |
| Publication page | 4f1d10e8b85c39e3492c7518e022298f015bbd1fd9c78a922f4cd29462839095 |
| Manifest | 606e8c79e5bbe938527aaf44e56dd6177b37adcbb7398759e6e08829d47ebb68 |
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 | ef6Q9dkh/3OWXSIjIhMKyDUNXd7ykO63O7KDeH46rrmAtZGQiXCGfFdz52eJPJkPTvtDPgp/hyOFKxSPdqsBCA== |
| 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
| 2026-10-12T00:41:23.959608Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028340observed 4f1d10e8b85c39e3492c7518e022298f...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-12T00:41:23.862025Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028340/manifest.jsonobserved 606e8c79e5bbe938527aaf44e56dd617...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-12T00:41:23.727268Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028340/publication.mdobserved b5ee79e2568ef42abdbd3a5fb013cc12...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-12T00:41:23.563116Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028340/publication.txtobserved 4e6428a98fc857866b5ececca28b50ca...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-24T12:41:50.933944Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028340observed 4f1d10e8b85c39e3492c7518e022298f...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-24T12:41:50.881908Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028340/manifest.jsonobserved 606e8c79e5bbe938527aaf44e56dd617...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-24T12:41:50.807332Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028340/publication.mdobserved b5ee79e2568ef42abdbd3a5fb013cc12...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-24T12:41:50.717500Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028340/publication.txtobserved 4e6428a98fc857866b5ececca28b50ca...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 |
|---|