OT-2026-000002194
Publication integrity record
Obstacle detection device
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-2026-000002194) never changes.
Identity and time
| Publication number | OT-2026-000002194 · never reused |
|---|---|
| Internal UUID | 01a0a67b-24cb-7fd7-addb-b643b9fbc450 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:11:23.340510Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000002194 |
| Status | PUBLIC |
Content hashes
| Canonical text | 0e06edd963ebc87f8be4403c3010faa901a5af418e98e7c67e988ef7968a844e |
|---|---|
| Markdown | 02fed821b2bdf21621d0310df91d293f4eda4147ba3e9e6624221c42b45c27b7 |
| Publication page | 608ff561f30f1d7abf05863e5fa923eee33a343da4f2d5372fd93fd77e47d7a0 |
| Manifest | 495031d018489be2b88a199a564feefdfa4b23cdf85c3f53df445d3051067b93 |
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 | +AMXvhJWRNHI9fv2Hc7QdJWEjAE3TlAupVsnNSuV36Dr9b9FJNJDsuVLXxlZS4Yjb73jVNqrSKHgaefWvWmUAA== |
| 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
| 2026-09-24T20:41:43.109080Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002194observed 608ff561f30f1d7abf05863e5fa923ee...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-24T20:41:43.037357Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002194/manifest.jsonobserved 495031d018489be2b88a199a564feefd...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-24T20:41:42.979174Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002194/publication.mdobserved 02fed821b2bdf21621d0310df91d293f...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-24T20:41:42.795185Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002194/publication.txtobserved 0e06edd963ebc87f8be4403c3010faa9...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T00:43:37.018388Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002194observed 608ff561f30f1d7abf05863e5fa923ee...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T00:43:36.894517Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002194/manifest.jsonobserved 495031d018489be2b88a199a564feefd...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T00:43:36.759027Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002194/publication.mdobserved 02fed821b2bdf21621d0310df91d293f...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T00:43:36.538288Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002194/publication.txtobserved 0e06edd963ebc87f8be4403c3010faa9...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 |
|---|