OT-2026-000000050
Publication integrity record
Gearbox Predictive Maintenance Using Load-Normalized Envelope Spectra
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-2026-000000050) never changes.
Identity and time
| Publication number | OT-2026-000000050 · never reused |
|---|---|
| Internal UUID | 01a0a4e7-bdda-71c9-8a30-128e6c119ed4 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T11:50:45.981115Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000050 |
| Status | PUBLIC |
Content hashes
| Canonical text | 65704265937df1760b89a2d57c63741f0ccb3054b83effb4792f243ed8c35256 |
|---|---|
| Markdown | 5386c5e701dc4f32ca5e5ed0d446b09e483cd9f6df1f1a03cba92de45d2adcee |
| 0ad552979a2f41135f10c80ecaa5a8ffc9ccd7c2bb6f7133197a308bb8919224 | |
| Publication page | ad8ec856290adf0988b7e72496200e822405718cfe0f6ddb4c93e3f3071473da |
| Manifest | df5ee81aa6ff7c6d4b56934af8e747a9d5b9c5055a09e6f360f2c65217ecec4f |
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-2026-02 · Verified |
|---|---|
| Signature | 8U0gTtVECtTlDVWFPnD/+tQ/WU3HEj67A6OBlsJU+60Uep/P7UK1DK0ZrwSOFRMJGlm/wPIjFW/TwZHtZ/3YAw== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T12:03:59Z batch OT-TS-2026-W38-004 · RFC 3161 token · inclusion proof root 374ac7be5b27e8fbd4755a00ec69d4c7... |
|---|
Independent retrieval
| 2026-09-15T12:41:33.095645Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000050observed ad8ec856290adf0988b7e72496200e82...fetched by grabo-systems from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T12:41:32.850862Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000050/publication.pdfobserved 0ad552979a2f41135f10c80ecaa5a8ff...fetched by grabo-systems from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T12:41:32.642002Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000050/manifest.jsonobserved df5ee81aa6ff7c6d4b56934af8e747a9...fetched by grabo-systems from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T12:41:32.511266Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000050/publication.txtobserved 65704265937df1760b89a2d57c63741f...fetched by grabo-systems from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T12:00:03.508757Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000050observed ad8ec856290adf0988b7e72496200e82...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T12:00:03.482798Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000050/publication.pdfobserved 0ad552979a2f41135f10c80ecaa5a8ff...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T12:00:03.460741Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000050/manifest.jsonobserved df5ee81aa6ff7c6d4b56934af8e747a9...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T12:00:03.434061Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000050/publication.txtobserved 65704265937df1760b89a2d57c63741f...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.zstf5540ade9ee87306569c02456843c15d... · 9,431,008 bytes · held by held on site pending an external custodian · retention permanent |
|---|