OT-2026-000002150
Publication integrity record
Method and contactless distance sensor for safeguarding a machine
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-2026-000002150) never changes.
Identity and time
| Publication number | OT-2026-000002150 · never reused |
|---|---|
| Internal UUID | 01a0a67a-e488-70e4-b098-14867ff9cde7 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:11:06.888485Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000002150 |
| Status | PUBLIC |
Content hashes
| Canonical text | f1974a0a07947adca0f61059ea3d420f98bc3270a3c0a454ce424a562b39747b |
|---|---|
| Markdown | 814fbc0b0476be190e0840203b7bda30e1e705f11766018c52e3c45e12857cb5 |
| Publication page | 496b9ebf6eaabc13faef467c8bc12a2405da865919610dde8467a23127e98e6d |
| Manifest | 49ef82795e4cdd806e94b96eb013db9c3f9b0ead7a6fe8a71051d35a95a1f9e5 |
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 | 9Dd7wh3iVqJhqJUtxU+SQP1Y9Ije6Mw9JDtsHZ0S4goHPE9Or8roYFtEoc05WQi2XqHJX9/ERla5muFFnbGFAw== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T19:27:02Z batch OT-TS-2026-W38-002 · RFC 3161 token · inclusion proof root 2d7e364e718bd6a32072ec57f9edc195... |
|---|
Independent retrieval
| 2026-09-15T19:50:19.855050Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002150observed 496b9ebf6eaabc13faef467c8bc12a24...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T19:50:19.827414Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002150/manifest.jsonobserved 49ef82795e4cdd806e94b96eb013db9c...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:50:19.813328Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002150/publication.txtobserved f1974a0a07947adca0f61059ea3d420f...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 |
|---|