OT-2026-000000748
Publication integrity record
Orbital friction welding method of a blade to a stub on a turbomachine rotor disc
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-2026-000000748) never changes.
Identity and time
| Publication number | OT-2026-000000748 · never reused |
|---|---|
| Internal UUID | 01a0a673-c6dc-7c2b-b73b-17b9de74b467 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:03:20.540366Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000748 |
| Status | PUBLIC |
Content hashes
| Canonical text | 38f4d855b4acea5e18c1fe075ba988857dbddfc4c3acb35a6518013847e190d0 |
|---|---|
| Markdown | 690f6c634352074c17f6fd078f2437a0f0002f1cfb1fb20821c3dcfe817cdbbf |
| Publication page | c13ed6e9135df4215ddb65c69643836940a5ae70a5be07e0d48653e34692a051 |
| Manifest | 99a22c861d42ec47f46229139e2963b87e74d8a388823cfcd91c4aee4b2150b9 |
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 | b4of/5WnLZnF78VTYSWxxCHzFX4AkFSQ7KH6Avtid8CZR9l9uOg3TNYlRROreBY1tX7rrdSdcFHWprmnJWeDAQ== |
| 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
| 2026-09-17T04:41:13.598356Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000748observed c13ed6e9135df4215ddb65c696438369...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-17T04:41:13.077666Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000748/manifest.jsonobserved 99a22c861d42ec47f46229139e2963b8...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-17T04:41:12.553894Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000748/publication.mdobserved 690f6c634352074c17f6fd078f2437a0...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-17T04:41:12.018020Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000748/publication.txtobserved 38f4d855b4acea5e18c1fe075ba98885...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:40:08.809851Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000748observed c13ed6e9135df4215ddb65c696438369...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:40:08.778258Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000748/manifest.jsonobserved 99a22c861d42ec47f46229139e2963b8...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:40:08.764126Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000748/publication.txtobserved 38f4d855b4acea5e18c1fe075ba98885...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 |
|---|