OT-2026-000002252
Publication integrity record
System and method for determining position of a pipelayer boom
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-2026-000002252) never changes.
Identity and time
| Publication number | OT-2026-000002252 · never reused |
|---|---|
| Internal UUID | 01a0a67b-7e9e-73ce-8c24-5058a9a890d2 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:11:46.334426Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000002252 |
| Status | PUBLIC |
Content hashes
| Canonical text | 4ab5bcc254d500a7b6ffc02222d9506dc9aaeab9406b85746e30cddd1c5e8dd0 |
|---|---|
| Markdown | 43be1dba94d8db4a09c3954fbba354494b19ba39bb0c51635db4081b5e4630d0 |
| Publication page | f6285650219ef9c1a231a131895519e210b1ad722d819e8b0a104d8efc560676 |
| Manifest | d7d96ff41f3af034e37bc1d1edcc6a0585491cece54ef582699c949e680cc070 |
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 | aqFlR522PWRoLaZtUvjtbC7wjA52XQkEWHi6mBLh4iEFfqyQjBHwFz78tYEGt+zHfP4RRIwgDHMjWeUSxvWlDg== |
| 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
| 2026-10-10T16:42:02.274441Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002252observed f6285650219ef9c1a231a131895519e2...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-10T16:42:02.123167Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002252/manifest.jsonobserved d7d96ff41f3af034e37bc1d1edcc6a05...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-10T16:42:01.944508Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002252/publication.mdobserved 43be1dba94d8db4a09c3954fbba35449...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-10T16:42:01.786433Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002252/publication.txtobserved 4ab5bcc254d500a7b6ffc02222d9506d...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:42:14.019338Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002252observed f6285650219ef9c1a231a131895519e2...fetched by grabo-systems from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:42:13.527653Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002252/manifest.jsonobserved d7d96ff41f3af034e37bc1d1edcc6a05...fetched by grabo-systems from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:42:13.283550Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002252/publication.txtobserved 4ab5bcc254d500a7b6ffc02222d9506d...fetched by grabo-systems from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:50:08.589133Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002252observed f6285650219ef9c1a231a131895519e2...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 |
|---|