OT-2026-000000500
Publication integrity record
Measuring device and error calibration method for machine tool using the same
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-2026-000000500) never changes.
Identity and time
| Publication number | OT-2026-000000500 · never reused |
|---|---|
| Internal UUID | 01a0a673-7263-7484-8402-f63d076e8a0d · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:02:58.915888Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000500 |
| Status | PUBLIC |
Content hashes
| Canonical text | 3dd10b28c659617c5837dfca5e6cf6759c98427ccadf09124c6df033e4a87fec |
|---|---|
| Markdown | ed9b01c2e0d4bab637060844fe8c6b0aad5e69736a0f777ebe22b74895d2539b |
| Publication page | 4f4a3c2407db93a8cf21cbdfd6ce37da003abbd613f93a09f85274ffa8e01331 |
| Manifest | 8be7543cd417f9e26ee612a73356ac3c26824664bc36fcccfd8d313d63dbf87d |
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 | e/CV0ivIu47CAkGZndx2pvtCENNuMRRhmrMfwo01yYeyyFHFDkvGvYtytsxe1WNYZJWA0avnUUTz0J7EUqK+Bg== |
| 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
| 2026-10-28T04:41:33.178371Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000500observed 4f4a3c2407db93a8cf21cbdfd6ce37da...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-28T04:41:33.046852Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000500/manifest.jsonobserved 8be7543cd417f9e26ee612a73356ac3c...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-28T04:41:32.856763Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000500/publication.mdobserved ed9b01c2e0d4bab637060844fe8c6b0a...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-28T04:41:32.759280Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000500/publication.txtobserved 3dd10b28c659617c5837dfca5e6cf675...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:40:36.741766Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000500observed 4f4a3c2407db93a8cf21cbdfd6ce37da...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:40:36.711128Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000500/manifest.jsonobserved 8be7543cd417f9e26ee612a73356ac3c...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:40:36.577673Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000500/publication.txtobserved 3dd10b28c659617c5837dfca5e6cf675...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 |
|---|