OT-2026-000003207
Publication integrity record
Manual vacuum producing system having pressure indicator
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-2026-000003207) never changes.
Identity and time
| Publication number | OT-2026-000003207 · never reused |
|---|---|
| Internal UUID | 01a0a69e-0960-75aa-b89b-2b7e901255a2 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:49:30.080631Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000003207 |
| Status | PUBLIC |
Content hashes
| Canonical text | fd4c7bce56170675f533c071949439879488f146f1c88923b4ee82807ca05d0b |
|---|---|
| Markdown | 9abef8568e9f850919605bbf098b0175ee2aaee2f86e7486641a80340c706329 |
| Publication page | 70105f430816827a9740991c845e52a9e21aa627381726eef6db6e6ce8e3bfa2 |
| Manifest | 7d898616852a770ced4c748b6653ad37c656383be41f59ef5efd6eab1a9fa9ad |
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 | XqC7KWnipABQnTMCv02BS1h0/iliXLqIvBWH3BWbpk3Hf1y86xI+o0xhcTMMhu+6jE3yWHLQ+FbTvQxAwwkhAg== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T20:07:03Z batch OT-TS-2026-W38-004 · RFC 3161 token · inclusion proof root d42f3e627490c26ffd144bf37543fecf... |
|---|
Independent retrieval
| 2026-09-15T19:50:02.390422Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003207observed 70105f430816827a9740991c845e52a9...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T19:50:02.359017Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003207/manifest.jsonobserved 7d898616852a770ced4c748b6653ad37...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:50:02.344904Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003207/publication.txtobserved fd4c7bce56170675f533c07194943987...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 |
|---|