OT-2026-000001478
Publication integrity record
Convex portion grinding system, convex portion grinding method, and method of producing steel product
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-2026-000001478) never changes.
Identity and time
| Publication number | OT-2026-000001478 · never reused |
|---|---|
| Internal UUID | 01a0a676-4ba9-7c1d-afcf-e28166c2df63 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:06:05.610083Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000001478 |
| Status | PUBLIC |
Content hashes
| Canonical text | 81872da9646999032a58e1792971eba092be58d786c5677c2e67efe6d80aa35f |
|---|---|
| Markdown | c0ebc38a3a99a2325ed76dac81093b9f3af9c751e44720e8e764577a0ea40a6c |
| Publication page | b92569aa395d8fab90a9b472b6ece7b845ace743f1aa2cc6b08398b082e7df35 |
| Manifest | 93d7fd7cb91d7ea8938ad5d47de8a6b9ff692a3b397451129dda46a0dbde4a05 |
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 | ZCESIHT7ETKd/skVmTLiP2zXTrkv4+g28y6ViIzQUi7TeNBXNuSae4V7DHcFG3bIlfxGeL7CDauSsuC3nvPMAw== |
| 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
| 2026-09-15T20:00:39.902772Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001478observed b92569aa395d8fab90a9b472b6ece7b8...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T20:00:39.746955Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001478/manifest.jsonobserved 93d7fd7cb91d7ea8938ad5d47de8a6b9...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:00:39.734564Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001478/publication.txtobserved 81872da9646999032a58e1792971eba0...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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