OT-2026-000000833
Publication integrity record
Friction stir spot welded joint and production method therefor, and friction stir spot welding method
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-2026-000000833) never changes.
Identity and time
| Publication number | OT-2026-000000833 · never reused |
|---|---|
| Internal UUID | 01a0a673-e385-70a3-9358-78dbac1eed07 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:03:27.877769Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000833 |
| Status | PUBLIC |
Content hashes
| Canonical text | c634fce09898f85917acdfd5d6682c98df3c4e9fc274a62b01f58deb999c72c7 |
|---|---|
| Markdown | 8b3a5b7247c2592a13516f5c06c7d254b48b3c4495be4919ffc11678997a9248 |
| Publication page | d7f4a1a48aa941ecda3a18a0efafff83b27b2a97a91a6a3da80c64e62eb779b0 |
| Manifest | aaba1c00f101a35f6a63fb7e2ee9150dfc833a12ac14c1d1945a0a1d24ce40ef |
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 | ZjqCgVDHn0DZmY2vp+88qsV5SguW7v4fePBN6u+zeyvJ+oLvx13Fz+MVz5MVteZ7k8pcbSH/JgZLRhHRMr4kBw== |
| 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
| 2026-09-15T20:30:29.897243Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000833observed d7f4a1a48aa941ecda3a18a0efafff83...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T20:30:29.866138Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000833/manifest.jsonobserved aaba1c00f101a35f6a63fb7e2ee9150d...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:30:29.730399Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000833/publication.txtobserved c634fce09898f85917acdfd5d6682c98...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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