OT-2026-000028850
Publication integrity record
Two pad foam vacuum gripper, two outlet manifold, common isolation valve, plant vacuum fed, manifold pressure sensor, 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-2026-000028850) never changes.
Identity and time
| Publication number | OT-2026-000028850 · never reused |
|---|---|
| Internal UUID | 01a0ae73-2a9d-724d-bc81-ab83ea5d71a4 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-17T08:19:38.288761Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000028850 |
| Status | PUBLIC |
Content hashes
| Canonical text | 4f3a9a3a96ab672699645dca36cf7cf0f54e98ce54a79f7b545cdc64895ba2b7 |
|---|---|
| Markdown | 5f1bfd888abd84107e070e2f740a22f55842c5cc07d2b79f3458a533ecb7fbf5 |
| Publication page | 0487b99f23a31cf3051d7c8fbd92fa55fe183829873cecb915d2c46e84feef3c |
| Manifest | 4f2eb773492c500be93642297fea4663e7d4aea266fb2c383327c03819ea8cf2 |
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 | 7GRuVvDZh60I64lFNuh9r989pdz0AElp0wy+ZC3am5GL9DRjeVunCaNyo3lxSJti5sdUCDaaADtXoS7IE5TWBQ== |
| 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
| 2026-10-07T04:41:14.551391Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028850observed 0487b99f23a31cf3051d7c8fbd92fa55...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-07T04:41:14.473185Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028850/manifest.jsonobserved 4f2eb773492c500be93642297fea4663...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-07T04:41:14.380355Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028850/publication.mdobserved 5f1bfd888abd84107e070e2f740a22f5...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-07T04:41:14.263408Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028850/publication.txtobserved 4f3a9a3a96ab672699645dca36cf7cf0...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-21T00:42:43.303820Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028850observed 0487b99f23a31cf3051d7c8fbd92fa55...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-21T00:42:43.164039Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028850/manifest.jsonobserved 4f2eb773492c500be93642297fea4663...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-21T00:42:43.061361Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028850/publication.mdobserved 5f1bfd888abd84107e070e2f740a22f5...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-21T00:42:42.874575Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028850/publication.txtobserved 4f3a9a3a96ab672699645dca36cf7cf0...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 |
|---|