OpenTechnical

OT-2026-000003341

Publication integrity record

Vacuum lifting/lowering head

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-2026-000003341) never changes.

Identity and time

Publication numberOT-2026-000003341 · never reused
Internal UUID01a0a6b3-447f-7466-bc36-62727b9a944a · UUIDv7, RFC 9562
Publication timestamp2026-09-15T20:12:41.471920Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000003341
StatusPUBLIC

Content hashes

Canonical text86dccefbf8d453b27e9df6d71c292373de01259ba3705686c6a6be278047dd35
Markdowna9dff70a44e54a063b2afabf21af6cfa8cdaf24628c4acf51c869ff835189cb2
PDF
Publication pageb2c5a705b7ca66ed0bb244b0ee9f34a9a14d66b21e8a63ea1494c0ca78630bd2
Manifest57e07f36253ab5ddd68fe288d54b4ba5ac97db75d7e1bf2d7096c8d145e8cc48

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
SignaturejGHRrdLT1yjuPlEGhSniYXnA6FT52XUBSkyuZe3H4oh5hJvUfZ5C4FhXZeABupLttlMtrWmeCAW11W7irI8bCw==
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

2026-09-17T04:23:14.781667ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003341
observed b2c5a705b7ca66ed0bb244b0ee9f34a9...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T04:23:14.766212ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003341/manifest.json
observed 57e07f36253ab5ddd68fe288d54b4ba5...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T04:23:14.751236ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003341/publication.md
observed a9dff70a44e54a063b2afabf21af6cfa...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T04:23:14.735879ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003341/publication.txt
observed 86dccefbf8d453b27e9df6d71c292373...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-15T20:20:07.620341ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003341
observed b2c5a705b7ca66ed0bb244b0ee9f34a9...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:20:07.591199ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003341/manifest.json
observed 57e07f36253ab5ddd68fe288d54b4ba5...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:20:07.579321ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003341/publication.txt
observed 86dccefbf8d453b27e9df6d71c292373...
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