OT-2026-000000854
Publication integrity record
Brittle material valves
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-2026-000000854) never changes.
Identity and time
| Publication number | OT-2026-000000854 · never reused |
|---|---|
| Internal UUID | 01a0a673-ebba-7f4d-84fb-62f81755e046 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:03:29.978848Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000854 |
| Status | PUBLIC |
Content hashes
| Canonical text | 7ac00ecaad20847a01c531b78c6e6987cba814c1809a4ad65d79db4940e33bac |
|---|---|
| Markdown | b0697ad0ea7c858283bf68d485a3258c2a07dcc141e0d46264d5b9c01f1b8385 |
| Publication page | bcb2cdcdad13219b2555bc4507eb388dd3cb7cafb9508005e01b190eda54d59a |
| Manifest | fcf32f319b2e014a23e440a7e78a1d1df55fe64384568acdd18e1c57b830b3c5 |
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 | FBa9o64IAr1BBqr8hdxnV5Is7ntaL2ywoklkbUo43EYIL/JcewOBpv9D3u2COD8dIMOA5CkMqcUAUqt1EAtTDA== |
| 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
| 2026-09-15T20:30:27.473079Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000854observed bcb2cdcdad13219b2555bc4507eb388d...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T20:30:27.439021Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000854/manifest.jsonobserved fcf32f319b2e014a23e440a7e78a1d1d...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:30:27.423944Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000854/publication.txtobserved 7ac00ecaad20847a01c531b78c6e6987...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 |
|---|