OT-2026-000000068
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-2026-000000068) never changes.
Identity and time
| Publication number | OT-2026-000000068 · never reused |
|---|---|
| Internal UUID | 01a0a672-e2f9-7a28-bab2-2ef049be5ced · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:02:22.202124Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000068 |
| Status | PUBLIC |
Content hashes
| Canonical text | 562a0ea2b0b3326c59a400449160265fedc3f16c2908b02435fe750a731cd629 |
|---|---|
| Markdown | 8326f342c727915938e571969c43be31a30e91dd3c2cd03b3ef755c76a6f8628 |
| Publication page | 4cbd07697e4a64a5388a6433b81b07a15d91a6c318aaa5c26e234afd3910e53e |
| Manifest | 35491b30f2f37cb633d4a5013cb482b963c07799fd9d5043c9167e1e09da530d |
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 | kLLw2DqG7ZzEKZKDiPYIkbNWyjTWWJ6bNVXIWeqd5VVadSianTaAs4cm7fcpK49mT2p1ZxJ6i+XKD3LfEd+eDQ== |
| 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
| 2026-09-15T21:00:15.128063Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000068observed 4cbd07697e4a64a5388a6433b81b07a1...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T21:00:15.097843Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000068/manifest.jsonobserved 35491b30f2f37cb633d4a5013cb482b9...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T21:00:15.085556Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000068/publication.txtobserved 562a0ea2b0b3326c59a400449160265f...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 |
|---|