OT-2026-000002826
Publication integrity record
Robotic systems and methods for tank seal inspection
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-2026-000002826) never changes.
Identity and time
| Publication number | OT-2026-000002826 · never reused |
|---|---|
| Internal UUID | 01a0a67f-020b-7c51-b295-148904a21a39 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:15:36.587899Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000002826 |
| Status | PUBLIC |
Content hashes
| Canonical text | 5ec858d76a0af701c07a309109e3c2b5e580a45146217ddb8281d6db9bdab954 |
|---|---|
| Markdown | 38b7285ffc6aa0fd369ddb4d35a88816d58bd53ffabb29c23e97483280579610 |
| Publication page | c6a13aadb637c5d8b1727a342812415e35c34c7c54fc14fe7cb0c6fe119455a3 |
| Manifest | 6d34335d59eb36a6faa25f4972d746365a8c8a61832420f0beb1ba9ed9924f3b |
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 | l1NhHsyRGX2zHIT/EoOQDLjDJEeu+tYnBzbfaNxPqhb8TJqI9eNlBQ1mky0A4jAIH6W9Pge4fubNdgGFzDWFCg== |
| 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
| 2026-10-24T16:41:37.341305Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002826observed c6a13aadb637c5d8b1727a342812415e...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-24T16:41:37.293791Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002826/manifest.jsonobserved 6d34335d59eb36a6faa25f4972d74636...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-24T16:41:37.241580Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002826/publication.mdobserved 38b7285ffc6aa0fd369ddb4d35a88816...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-24T16:41:37.071330Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002826/publication.txtobserved 5ec858d76a0af701c07a309109e3c2b5...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T04:23:02.360563Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002826observed c6a13aadb637c5d8b1727a342812415e...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-16T04:23:02.343248Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002826/manifest.jsonobserved 6d34335d59eb36a6faa25f4972d74636...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-16T04:23:02.325805Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002826/publication.mdobserved 38b7285ffc6aa0fd369ddb4d35a88816...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-16T04:23:02.275064Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002826/publication.txtobserved 5ec858d76a0af701c07a309109e3c2b5...fetched by instance-3.rotem.ai from 34.69.0.72, 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 |
|---|