OT-2026-000001819
Publication integrity record
Surface finish quality evaluation system and 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-2026-000001819) never changes.
Identity and time
| Publication number | OT-2026-000001819 · never reused |
|---|---|
| Internal UUID | 01a0a678-d462-7654-b216-5a33b80809d2 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:08:51.683130Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000001819 |
| Status | PUBLIC |
Content hashes
| Canonical text | 3b51d44aca066df11bf190c8474fb057b2298e2dc0b430e76d3ec7ccff20fd2a |
|---|---|
| Markdown | 857bf9a064482addf70dcf343e6a10fd460d7b42e0d05487818a29b5f820bda5 |
| Publication page | 30b44e10e779bbb227b7ca664d3d0eff98881bb3f5cd6d1643988bebfadc7da3 |
| Manifest | 9f2c586fff5c5372045904394ba84bb47987174569a203d7b403e1d6e524b644 |
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 | Rg2/pLWw2bRH9aATacCtzQfNT2i9stTl5h+3ciPIXTe4xs/b2ox0o+gfL1e0TcVPCZmRJ438N7dJH2B62TEsCw== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T19:27:02Z batch OT-TS-2026-W38-002 · RFC 3161 token · inclusion proof root 2d7e364e718bd6a32072ec57f9edc195... |
|---|
Independent retrieval
| 2026-09-15T19:10:22.328678Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001819observed 30b44e10e779bbb227b7ca664d3d0eff...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T19:10:22.179615Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001819/manifest.jsonobserved 9f2c586fff5c5372045904394ba84bb4...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:10:22.167460Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001819/publication.txtobserved 3b51d44aca066df11bf190c8474fb057...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 |
|---|