OpenTechnical

OT-2026-000003135

Publication integrity record

Vacuum System for a transfer system

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-2026-000003135) never changes.

Identity and time

Publication numberOT-2026-000003135 · never reused
Internal UUID01a0a691-faf0-7b3c-8562-4d8bb33597e0 · UUIDv7, RFC 9562
Publication timestamp2026-09-15T19:36:19.952522Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000003135
StatusPUBLIC

Content hashes

Canonical textcf65ccd029de3a70f2adf991c628de6929ddd9d9e3cc4a653ec6318d660422d2
Markdown5e185bbc1866ce6d9f58debccb8f127008dedbcbb97904c062fcd1afdb7e7037
PDF
Publication page6198019986e635d6936f2c2a51a47b9f8d4d13c00d45eecffc9ba241291d9c1e
Manifestcb57abad7505922998d46488943890395ffd4799881ed7578141cca8ea267c5b

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
SignatureU5P2h9Q2kjMC5nkdMrCHcaiPsUGzP1AEM9zAyslEQGKaCChe3Pct6JCxW7nAWaDwdYQoTGvZNdqWuiUKPkttBw==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-15T19:47:02Z
batch OT-TS-2026-W38-003 · RFC 3161 token · inclusion proof
root 713cd89b73be422b38f7894d4fb6a755...

Independent retrieval

2026-09-15T21:12:27.966492ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003135
observed 6198019986e635d6936f2c2a51a47b9f...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-15T21:12:27.941524ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003135/manifest.json
observed cb57abad7505922998d4648894389039...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-15T21:12:27.927787ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003135/publication.md
observed 5e185bbc1866ce6d9f58debccb8f1270...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-15T21:12:27.915651ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003135/publication.txt
observed cf65ccd029de3a70f2adf991c628de69...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-15T19:40:04.604695ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003135
observed 6198019986e635d6936f2c2a51a47b9f...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T19:40:04.574317ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003135/manifest.json
observed cb57abad7505922998d4648894389039...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T19:40:04.556771ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003135/publication.txt
observed cf65ccd029de3a70f2adf991c628de69...
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