OT-2026-000001116
Publication integrity record
Welding method, identification sign assignment device, and weldment
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-2026-000001116) never changes.
Identity and time
| Publication number | OT-2026-000001116 · never reused |
|---|---|
| Internal UUID | 01a0a674-47f3-7c33-9e1f-3de920a1e0a3 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:03:53.588055Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000001116 |
| Status | PUBLIC |
Content hashes
| Canonical text | d6a8a564ddf3e5feab8b2aa4670d6057be6a32baab98b75cce111e307ae1850b |
|---|---|
| Markdown | 87f7029b709a32b855d7a387f06e4671728b809103e46b3ef7019d6f5eebc920 |
| Publication page | e9cbe683bd75bff530d5248d9b13fb484c789a0f640871d0f5dd462789bce443 |
| Manifest | b0761eef700f436dcba22ee60ff1d46042d8cda00e45270271f2da1434e4b2ca |
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 | 5t6JVUEhzNQd2XcWGdXp5mMbWXUma5PTP0UaDtGJ4e/qmUkujYN2wCSKvXDEn05HCmyU3qUTRpeoRWlh4DrIBQ== |
| 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
| 2026-10-07T04:41:16.138375Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001116observed e9cbe683bd75bff530d5248d9b13fb48...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-07T04:41:16.085299Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001116/manifest.jsonobserved b0761eef700f436dcba22ee60ff1d460...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-07T04:41:16.028717Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001116/publication.mdobserved 87f7029b709a32b855d7a387f06e4671...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-07T04:41:15.893994Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001116/publication.txtobserved d6a8a564ddf3e5feab8b2aa4670d6057...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:20:22.389554Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001116observed e9cbe683bd75bff530d5248d9b13fb48...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:20:22.358231Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001116/manifest.jsonobserved b0761eef700f436dcba22ee60ff1d460...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:20:22.346567Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001116/publication.txtobserved d6a8a564ddf3e5feab8b2aa4670d6057...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 |
|---|