OT-2026-000000261
Publication integrity record
Detection of contact tip consumption with welding
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-2026-000000261) never changes.
Identity and time
| Publication number | OT-2026-000000261 · never reused |
|---|---|
| Internal UUID | 01a0a673-2a62-7e01-96ce-7fc263acc30a · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:02:40.483304Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000261 |
| Status | PUBLIC |
Content hashes
| Canonical text | 9793f336222ea62f9a975c85ffcc5cc6c4376a2c7feab6f01b123693ac4db6c3 |
|---|---|
| Markdown | 6a8b1406b5c2d1bbc8887da8d139455fe95d0313c753837a6e3fad642e5f8cb3 |
| Publication page | c3cf81307689e31f8fdf47687a9e3cef35bf5f60ffc549ad4afbca815415208f |
| Manifest | 62da386aca7436b6196985753e61cd30c6ffecab11a8a94539ccba43051839a0 |
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 | /d+xhTdhmD9+Du8rg3JgXIrdUsKT/NgAjWf5JxKTpZxbAmnNTb804e/ctbv31lKodWVpozIGaRlXKpW1da9cAA== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T19:07:03Z batch OT-TS-2026-W38-001 · RFC 3161 token · inclusion proof root 6369baadb1a246009d149835804d20ba... |
|---|
Independent retrieval
| 2026-09-16T00:43:29.203660Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000261observed c3cf81307689e31f8fdf47687a9e3cef...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-16T00:43:28.925755Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000261/manifest.jsonobserved 62da386aca7436b6196985753e61cd30...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T00:43:28.661318Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000261/publication.mdobserved 6a8b1406b5c2d1bbc8887da8d139455f...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T00:43:28.399774Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000261/publication.txtobserved 9793f336222ea62f9a975c85ffcc5cc6...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:50:30.581765Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000261observed c3cf81307689e31f8fdf47687a9e3cef...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:50:30.552197Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000261/manifest.jsonobserved 62da386aca7436b6196985753e61cd30...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:50:30.540201Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000261/publication.txtobserved 9793f336222ea62f9a975c85ffcc5cc6...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 |
|---|