OpenTechnical

OT-2026-000000668

Publication integrity record

Distributed weld monitoring system with job tracking

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-2026-000000668) never changes.

Identity and time

Publication numberOT-2026-000000668 · never reused
Internal UUID01a0a673-ac9d-77ae-9c13-03d5ad40e144 · UUIDv7, RFC 9562
Publication timestamp2026-09-15T19:03:13.821739Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000000668
StatusPUBLIC

Content hashes

Canonical text2c690fbe8c0e5f361a83821690c34194c285ec6e57c3f572096683d71a3b6a1f
Markdowna1f9331f9b138bdbafb17be884e3c13729bf2c2cd312addf5d78bafab60a0886
PDF
Publication page32be1d835c90489614a310861df7fade0418389ece2bc35f3b522fd51ea8ff0b
Manifestb418347a066e15a78b3d3e8b0bf6ab59d15fd14beba4ae7024ba1515670bc881

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
Signature7lLoatComb+IfbNzyGTdUabX7DfdlCaPg1iT8m015ops39kPYTqbvwi7cxfifbghdAFl+Qw7ThrVsJA7MQtSBw==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-15T19:07:03Z
batch OT-TS-2026-W38-001 · RFC 3161 token · inclusion proof
root 6369baadb1a246009d149835804d20ba...

Independent retrieval

2026-09-15T20:40:18.220054ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000668
observed 32be1d835c90489614a310861df7fade...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:40:18.066679ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000668/manifest.json
observed b418347a066e15a78b3d3e8b0bf6ab59...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:40:18.053965ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000668/publication.txt
observed 2c690fbe8c0e5f361a83821690c34194...
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