OT-2026-000000020
Publication integrity record
Leak-Tolerant Vacuum Fixture for Rough Surface Drilling
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-2026-000000020) never changes.
Identity and time
| Publication number | OT-2026-000000020 · never reused |
|---|---|
| Internal UUID | 01a0a671-f481-7ebf-8071-147dbb08527a · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:01:21.156406Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000020 |
| Status | PUBLIC |
Content hashes
| Canonical text | 80ad73cceb4b47e7d16bd1e0b175314edc3f804d3dce87c1823bb9b7f3a99418 |
|---|---|
| Markdown | f0685f63ee9356d23bd9d5beccde906073135962800bbc581fa76a5ead163c06 |
| Publication page | 47c17ad75c56e43a014e33ac6f7b7fabb6829293087a3131d2da88390b4df90b |
| Manifest | c3861ea7a6bed20a6e88cf5e0ae4b17fe3a753ef73caef76d9e416914ba97073 |
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 | 2fRMatxkAzw/woA3+jmgl711un03/kNy1YgOSsVzavcuby4kfMXj82F/VZBAfyLu09gA72Mjdm85w9y2mgbIAA== |
| 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
| 2026-09-16T08:44:19.753294Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000020observed 47c17ad75c56e43a014e33ac6f7b7fab...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-16T08:44:19.381228Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000020/manifest.jsonobserved c3861ea7a6bed20a6e88cf5e0ae4b17f...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T08:44:18.959930Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000020/publication.mdobserved f0685f63ee9356d23bd9d5beccde9060...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T08:44:18.659946Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000020/publication.txtobserved 80ad73cceb4b47e7d16bd1e0b175314e...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T21:00:20.567060Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000020observed 47c17ad75c56e43a014e33ac6f7b7fab...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T21:00:20.411429Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000020/manifest.jsonobserved c3861ea7a6bed20a6e88cf5e0ae4b17f...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T21:00:20.396269Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000020/publication.txtobserved 80ad73cceb4b47e7d16bd1e0b175314e...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 |
|---|