OT-2026-000021557
Publication integrity record
Single cup vacuum gripper, 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-2026-000021557) never changes.
Identity and time
| Publication number | OT-2026-000021557 · never reused |
|---|---|
| Internal UUID | 01a0ae6f-865e-7f60-9731-9accc7c2095f · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-17T08:15:39.631048Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000021557 |
| Status | PUBLIC |
Content hashes
| Canonical text | b518271829496694df458d73ab98544e2b26f220d7d9732100f26a159b33a354 |
|---|---|
| Markdown | 99247d384bbb7b0df6a1f2a4f74b32acd1b43a01661cc3e52b10d26e0f5774e2 |
| Publication page | 5a1c3b715842dcc4850bda8d3ca772b81dd3379a36c9c17da3c79b9846522110 |
| Manifest | c989220a2b84c6ead90527e1500cd8f42b2a0723957d65314e53219a9c578c70 |
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 | Rp1SbrGvUfnUjOn9oXv09gPnn6CHGTLcwdxrvR7XCnrtyhCTQi8AxWY7p74v9qd+61JJVBdd06ijvILotirGCw== |
| 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
| 2026-10-05T16:41:28.437739Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000021557observed 5a1c3b715842dcc4850bda8d3ca772b8...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-05T16:41:28.339109Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000021557/manifest.jsonobserved c989220a2b84c6ead90527e1500cd8f4...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-05T16:41:28.234001Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000021557/publication.mdobserved 99247d384bbb7b0df6a1f2a4f74b32ac...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-05T16:41:28.131506Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000021557/publication.txtobserved b518271829496694df458d73ab98544e...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-28T04:23:11.168083Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000021557observed 5a1c3b715842dcc4850bda8d3ca772b8...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-28T04:23:11.153697Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000021557/manifest.jsonobserved c989220a2b84c6ead90527e1500cd8f4...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-28T04:23:11.140018Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000021557/publication.mdobserved 99247d384bbb7b0df6a1f2a4f74b32ac...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-28T04:23:11.121835Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000021557/publication.txtobserved b518271829496694df458d73ab98544e...fetched by instance-3.rotem.ai from 34.69.0.72, 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 |
|---|