OT-2026-000003489
Publication integrity record
Dual active selector valve
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-2026-000003489) never changes.
Identity and time
| Publication number | OT-2026-000003489 · never reused |
|---|---|
| Internal UUID | 01a0a6c6-e21f-7162-83a5-56a9590dccb4 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T20:34:07.008002Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000003489 |
| Status | PUBLIC |
Content hashes
| Canonical text | ca66359be903a21fafb6165c1ba63f22fc5e14664f67dc0195781e6581eb451c |
|---|---|
| Markdown | 0e1a94d6fb4db6383c76648c246b928932065b2736e3c5ed581b2087f1390273 |
| Publication page | 2d5af43ab596edeca2a69e752b835bafacaac7dd96f1a096d07fb2b7380bd4f7 |
| Manifest | 44874ef7ecb44ad5a35a9d85f63403d170a9630ac4c3b61910855907f9af2620 |
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 | veffAyjnwwKoB5nuC7CyBPqBo5lFqEtF5V50f/iBZ4hPI+duXctf9UxPlv5SYUbE5d2J+LtQcbzyrfBXwSC3AA== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T20:36:25Z batch OT-TS-2026-W38-006 · RFC 3161 token · inclusion proof root 40fdb380c9f41bd58bb35c455dde2c7d... |
|---|
Independent retrieval
| 2026-09-15T20:40:03.580417Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003489observed 2d5af43ab596edeca2a69e752b835baf...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T20:40:03.551243Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003489/manifest.jsonobserved 44874ef7ecb44ad5a35a9d85f63403d1...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:40:03.535584Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003489/publication.txtobserved ca66359be903a21fafb6165c1ba63f22...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 |
|---|