OT-2026-000000549
Publication integrity record
Multi-way valve and a heat pump system including the same
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-2026-000000549) never changes.
Identity and time
| Publication number | OT-2026-000000549 · never reused |
|---|---|
| Internal UUID | 01a0a673-85ed-7931-86ed-edc19a6d300a · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:03:03.917545Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000549 |
| Status | PUBLIC |
Content hashes
| Canonical text | 047ce8a798997d833bd84e3b27bc3208f104f359e3c497e5e797527068c7c49e |
|---|---|
| Markdown | bcd16cc2ab14357a61e390637f5eddca5083ccddc964d6f2b64531e802339cae |
| Publication page | 97b0db0986baafccb07778834d7d83aa27c2d247be6646c5653a2acb5297a8e8 |
| Manifest | f754e3851599ed848f261acf52f036817deb39aa69216ba5863e3be0e2340bcd |
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 | cpyeXQ3j4G1V0FZ65A9DgFDjmKl3+U/yt9qpFsx53aO9clmY3HopZ2Mj3L/F9UieYLqjgOfuYfFwGPG65HIODg== |
| 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
| 2026-09-15T20:40:31.303258Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000549observed 97b0db0986baafccb07778834d7d83aa...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T20:40:31.273928Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000549/manifest.jsonobserved f754e3851599ed848f261acf52f03681...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:40:31.261344Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000549/publication.txtobserved 047ce8a798997d833bd84e3b27bc3208...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 |
|---|