OT-2026-000000063
Publication integrity record
Vacuum chuck for a lathe for making optically-smooth surfaces
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-2026-000000063) never changes.
Identity and time
| Publication number | OT-2026-000000063 · never reused |
|---|---|
| Internal UUID | 01a0a672-9126-781c-9f18-e566857acbf4 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:02:01.256687Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000063 |
| Status | PUBLIC |
Content hashes
| Canonical text | 932c76d494e4bd49dcecba94ede047dc1b8f3d7299d4ba975ace04476b422cdb |
|---|---|
| Markdown | 3447cfe891fee0a331027500b190fb73ac295da922a549374346c5a2cf7366e4 |
| Publication page | 0952da1007f393f2418edd8b0d9850b5bd02bc3b5064a20e27ef0c53afd71c89 |
| Manifest | 3997fc7165cc996a0f80498313ecf965295a6b1c3cee8103d6a66b4d76ab20d4 |
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 | bBX9M6N6T+mV8+uaxAtGIhTEJOsA5bR4M4eoQerzDesyanm6tKxTB0OHsOC3Uq1JGsavbIqtBv/iW9OJL0NLCw== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T19:07:03Z batch OT-TS-2026-W38-001 · RFC 3161 token · inclusion proof root 6369baadb1a246009d149835804d20ba... |
|---|
Independent retrieval
| 2026-09-28T20:41:17.662767Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000063observed 0952da1007f393f2418edd8b0d9850b5...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-28T20:41:17.574095Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000063/manifest.jsonobserved 3997fc7165cc996a0f80498313ecf965...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-28T20:41:17.477881Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000063/publication.mdobserved 3447cfe891fee0a331027500b190fb73...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-28T20:41:17.282218Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000063/publication.txtobserved 932c76d494e4bd49dcecba94ede047dc...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T21:00:15.656196Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000063observed 0952da1007f393f2418edd8b0d9850b5...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T21:00:15.626766Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000063/manifest.jsonobserved 3997fc7165cc996a0f80498313ecf965...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T21:00:15.614420Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000063/publication.txtobserved 932c76d494e4bd49dcecba94ede047dc...fetched by instance-3.rotem.ai from 127.0.0.1, 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 |
|---|