OT-2026-000000055
Publication integrity record
Differential Pressure Leak Test with Adiabatic Settling Compensation
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-2026-000000055) never changes.
Identity and time
| Publication number | OT-2026-000000055 · never reused |
|---|---|
| Internal UUID | 01a0a4eb-652e-71a2-88b9-b9197e552426 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T11:54:45.424441Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000055 |
| Status | PUBLIC |
Content hashes
| Canonical text | 2455a779326a2c37d7c9df4e20c003bb1f983c1deb9902f6bca875ecfcfadef9 |
|---|---|
| Markdown | 7b451fc234308c3c9122482a74e81ce256dc7b771615b17d4ac5975b38a6e9b9 |
| 6b64750069678409376b92beda858d68554121e0420e58c142154b5ee3a580e8 | |
| Publication page | b777a1a2d38a07d44e051f7041af18a8079f2b49d099c2b6e1475b1e4d314e21 |
| Manifest | cf8f7dd7e17542b6dbb648c13ee7f72f30a48522dd6543fbaae38a859561f276 |
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-2026-02 · Verified |
|---|---|
| Signature | Dcm8d3EWNb9EGNTQIyonyp45dhaYln+L8WAhi6PzwGse1Y1rh0CKCCCULknZavwO/kXm+M5Z1lmhuDhnh+IoBA== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T12:03:59Z batch OT-TS-2026-W38-004 · RFC 3161 token · inclusion proof root 374ac7be5b27e8fbd4755a00ec69d4c7... |
|---|
Independent retrieval
| 2026-09-15T12:41:38.933846Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000055observed b777a1a2d38a07d44e051f7041af18a8...fetched by grabo-systems from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T12:41:38.751248Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000055/publication.pdfobserved 6b64750069678409376b92beda858d68...fetched by grabo-systems from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T12:41:38.596996Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000055/manifest.jsonobserved cf8f7dd7e17542b6dbb648c13ee7f72f...fetched by grabo-systems from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T12:41:38.431024Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000055/publication.txtobserved 2455a779326a2c37d7c9df4e20c003bb...fetched by grabo-systems from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T12:00:03.053872Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000055observed b777a1a2d38a07d44e051f7041af18a8...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T12:00:03.034860Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000055/publication.pdfobserved 6b64750069678409376b92beda858d68...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T12:00:03.005687Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000055/manifest.jsonobserved cf8f7dd7e17542b6dbb648c13ee7f72f...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T12:00:02.970481Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000055/publication.txtobserved 2455a779326a2c37d7c9df4e20c003bb...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.zstf5540ade9ee87306569c02456843c15d... · 9,431,008 bytes · held by held on site pending an external custodian · retention permanent |
|---|