OpenTechnical

OT-2026-000003352

Publication integrity record

Automatic load sensing vacuum 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-2026-000003352) never changes.

Identity and time

Publication numberOT-2026-000003352 · never reused
Internal UUID01a0a6b5-1299-76dc-86f3-75c036d44ecb · UUIDv7, RFC 9562
Publication timestamp2026-09-15T20:14:39.770792Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000003352
StatusPUBLIC

Content hashes

Canonical text80a27a16ec1f8b8006bc6f19ee047c7c4802e61681c6da36066413f9e5b5ebe1
Markdown3eb9110fee4832c77145b1514138f91336512a2c32c440ba340fda99552e1436
PDF
Publication paged5fd3b5e76dbd1c88ea01c83494e96069b2fc4f727838fb26a1841a04e72be6d
Manifest107204e9e4117557cccb3f71a18c426be11995b471afb33ab913ba9ff9a5a6aa

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
Signatureza2b9nZ57wmow5zci6Ax6l1k949QAyGMT0M8XIWE+OqYUmJK901l9JpNiOzKGloEm4eQpmVCUS978/pvq+bhCQ==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-15T20:27:02Z
batch OT-TS-2026-W38-005 · RFC 3161 token · inclusion proof
root 0d980c01ea01b2d7f69845e24a85320c...

Independent retrieval

2026-09-30T04:23:40.987670ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003352
observed d5fd3b5e76dbd1c88ea01c83494e9606...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-30T04:23:40.975577ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003352/manifest.json
observed 107204e9e4117557cccb3f71a18c426b...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-30T04:23:40.961664ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003352/publication.md
observed 3eb9110fee4832c77145b1514138f913...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-30T04:23:40.793376ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003352/publication.txt
observed 80a27a16ec1f8b8006bc6f19ee047c7c...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-15T20:20:06.366806ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003352
observed d5fd3b5e76dbd1c88ea01c83494e9606...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:20:06.339352ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003352/manifest.json
observed 107204e9e4117557cccb3f71a18c426b...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:20:06.327955ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003352/publication.txt
observed 80a27a16ec1f8b8006bc6f19ee047c7c...
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