OT-2026-000003258
Publication integrity record
Resistance projection welding system and method for welding a projection weld nut to a workpiece
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-2026-000003258) never changes.
Identity and time
| Publication number | OT-2026-000003258 · never reused |
|---|---|
| Internal UUID | 01a0a6a5-935f-74af-b8e7-b8796d0a8dc2 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:57:44.160081Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000003258 |
| Status | PUBLIC |
Content hashes
| Canonical text | ff675cdb5e697cb9364f57ccbb963bd208bf3d2d646fa33e94d49aa9a34e7aef |
|---|---|
| Markdown | e21f679560be3dae6b1e85fc35793046b343194f37cedcc76de0a4280c7408ec |
| Publication page | 8dbc061896e3a431107a9f52853d8a6147c03c1ecb12e00679c25a66be5ed1e4 |
| Manifest | 1887fd98d251a049fca1c585b75f4b072fcb67650752ed2745a551cb1153bc22 |
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 | T+W2pQov0r2LlHCsk3N39T31o2DPBqHHZAkDEKIwNeO2oQpJxBdqrzyBH+0l4E5E7fkiBpcCbVZCgrctc+xdBQ== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T20:07:03Z batch OT-TS-2026-W38-004 · RFC 3161 token · inclusion proof root d42f3e627490c26ffd144bf37543fecf... |
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Independent retrieval
| 2026-09-16T04:23:11.574420Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003258observed 8dbc061896e3a431107a9f52853d8a61...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-16T04:23:11.559064Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003258/manifest.jsonobserved 1887fd98d251a049fca1c585b75f4b07...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-16T04:23:11.542629Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003258/publication.mdobserved e21f679560be3dae6b1e85fc35793046...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-16T04:23:11.505567Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003258/publication.txtobserved ff675cdb5e697cb9364f57ccbb963bd2...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:00:04.911482Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003258observed 8dbc061896e3a431107a9f52853d8a61...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:00:04.879634Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003258/manifest.jsonobserved 1887fd98d251a049fca1c585b75f4b07...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:00:04.744835Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003258/publication.txtobserved ff675cdb5e697cb9364f57ccbb963bd2...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 |
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