OT-2026-000003169
Publication integrity record
Pneumatic device
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-2026-000003169) never changes.
Identity and time
| Publication number | OT-2026-000003169 · never reused |
|---|---|
| Internal UUID | 01a0a697-f24e-7ffb-8336-f1a5ed8254c4 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:42:50.959115Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000003169 |
| Status | PUBLIC |
Content hashes
| Canonical text | db49c4d9d23701fa7b9808e89e93f9cd0c1d329214100e62a75885b2bfebe3de |
|---|---|
| Markdown | d742e5de533a1949d4662b67ffe77d06f9586889f9453777819c79dd36b99c84 |
| Publication page | 3a9643972aface6b7bfeac0f92a6487499f46b7a6c4d436a6b60d3534dd2d3b2 |
| Manifest | 43b79473ee1f74104f9f91f0ba1246b314cf34abaac0ac13c86e2e1f0fcab5b1 |
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 | huNH7Yv8ZqJM4ivLnNMtzBBMTcStmUGdQ1hnQ41oJTy2xzHTAQGhvfZoH9XBb8bgRcEb5bFy0HgUaw8HkYUjCQ== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T19:47:02Z batch OT-TS-2026-W38-003 · RFC 3161 token · inclusion proof root 713cd89b73be422b38f7894d4fb6a755... |
|---|
Independent retrieval
| 2026-09-15T19:50:06.630965Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003169observed 3a9643972aface6b7bfeac0f92a64874...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T19:50:06.603584Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003169/manifest.jsonobserved 43b79473ee1f74104f9f91f0ba1246b3...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:50:06.591037Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003169/publication.txtobserved db49c4d9d23701fa7b9808e89e93f9cd...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 |
|---|