OpenTechnical

OT-2026-000003482

Publication integrity record

Multiple actuator hydraulic system and rotary control valve therefor

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-2026-000003482) never changes.

Identity and time

Publication numberOT-2026-000003482 · never reused
Internal UUID01a0a6c6-3136-7e66-b011-7f63abf13641 · UUIDv7, RFC 9562
Publication timestamp2026-09-15T20:33:21.719189Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000003482
StatusPUBLIC

Content hashes

Canonical texte50e02a545a27cb188659849af99de4e88fe7247075d0e692c549e99911c53ec
Markdownda680801dd8bc70600296bedf4167d73c86efe115ce948d3b0245e7b1d2c80c8
PDF
Publication page5b3de4d45c8d0b2b7cf6bf47a37e1c9686192e8677f1809b87a13197f090007c
Manifest8866752bbb70eff8898ec5c5ac55eb55fc1ecfd2169909863ada95a7c741537c

SHA-256, lowercase hex, over the exact bytes of each published file. Every figure is hashed individually in the manifest.

Manifest signature

AlgorithmEd25519 · key OT-SIGN-2026-01 · Verified
SignaturefUlhlPxWh9clpcatPlanORzQft6d5dFKJE50WA/FOavUucARwTfOdEgYE6k6/JPJ8KHRzBxF2fFme6n9SjucBQ==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-15T20:36:25Z
batch OT-TS-2026-W38-006 · RFC 3161 token · inclusion proof
root 40fdb380c9f41bd58bb35c455dde2c7d...

Independent retrieval

2026-09-15T20:40:04.796161ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003482
observed 5b3de4d45c8d0b2b7cf6bf47a37e1c96...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:40:04.759741ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003482/manifest.json
observed 8866752bbb70eff8898ec5c5ac55eb55...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:40:04.744758ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003482/publication.txt
observed e50e02a545a27cb188659849af99de4e...
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 archivePending 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-W38OpenTechnical-Custody-2026-W38.tar.zst
f2fc69d02142424a578267e5e3a6d3bb... · 402,218,449 bytes · held by held on site pending an external custodian · retention permanent