OpenTechnical

OT-2026-000003289

Publication integrity record

Modular machine tool for machining bars, comprising a frame with four tool supporting units

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-2026-000003289) never changes.

Identity and time

Publication numberOT-2026-000003289 · never reused
Internal UUID01a0a6aa-a498-72be-a3c2-21fd27628d03 · UUIDv7, RFC 9562
Publication timestamp2026-09-15T20:03:16.249290Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000003289
StatusPUBLIC

Content hashes

Canonical text597c4eaaa70af5ccbee7700517f425118cb9b1f541cb2292ef9ec814465bb13d
Markdowncd6bd74d23a1f5a67dd88b361f3cc3d673fe25eb0b22e0febcb5418b469403ba
PDF
Publication page4578f1093fcfc57bfa774ca99eabc2a10179af452dfa9d17478d0dc53e2c44f6
Manifest1031bd96f771568bf640a5e54db36d3a50e8426d1d99673976d8b88af58fe29f

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
SignaturePNrzUpao3psCiM0cHjOoc6EA95vzpfLJerbw9hqJd2e1rRjX/zglIZR/lvm2yCDPhhAsV8O3ezhmscvsA4A6AQ==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-15T20:07:03Z
batch OT-TS-2026-W38-004 · RFC 3161 token · inclusion proof
root d42f3e627490c26ffd144bf37543fecf...

Independent retrieval

2026-09-15T20:10:08.230215ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003289
observed 4578f1093fcfc57bfa774ca99eabc2a1...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:10:08.031752ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003289/manifest.json
observed 1031bd96f771568bf640a5e54db36d3a...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:10:08.020419ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003289/publication.txt
observed 597c4eaaa70af5ccbee7700517f42511...
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