OT-2026-000000303
Publication integrity record
Method of calibrating optical coherence tomography apparatus to measure depth
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-2026-000000303) never changes.
Identity and time
| Publication number | OT-2026-000000303 · never reused |
|---|---|
| Internal UUID | 01a0a673-35b0-7b99-b89c-3e735b469dd8 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:02:43.376972Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000303 |
| Status | PUBLIC |
Content hashes
| Canonical text | cf5ae0d63ca39c763aaae5ad47131d404b1c3236dee354af9d75f1a967ade60e |
|---|---|
| Markdown | d45517bc0dd6c75bb60c9609be8d0618a049e10b4d1298f9c82a9480017c3ad1 |
| Publication page | 37f12167f7d0083042766185b5b051610b95702c13e4365f7a33755352333832 |
| Manifest | f221f375f27f9094ced0f6df60e5dc4f486f78fd5e157aa8ce57ab90cd8a65fd |
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 | X+ADBUUBRJixIQmNQwE8jpkO31AXJPb4ESqTSjiRPCyC30mn9fdXU5pd8hrsXDzZ38ARiltE56ye2ttcR/bqAg== |
| 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
| 2026-10-11T16:41:45.774616Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000303observed 37f12167f7d0083042766185b5b05161...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-11T16:41:45.701687Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000303/manifest.jsonobserved f221f375f27f9094ced0f6df60e5dc4f...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-11T16:41:45.624101Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000303/publication.mdobserved d45517bc0dd6c75bb60c9609be8d0618...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-11T16:41:45.478981Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000303/publication.txtobserved cf5ae0d63ca39c763aaae5ad47131d40...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:50:26.037466Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000303observed 37f12167f7d0083042766185b5b05161...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:50:26.006424Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000303/manifest.jsonobserved f221f375f27f9094ced0f6df60e5dc4f...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:50:25.994108Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000303/publication.txtobserved cf5ae0d63ca39c763aaae5ad47131d40...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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