OpenTechnical

OT-2026-000003148

Publication integrity record

Stud tensioning device for flange cover

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-2026-000003148) never changes.

Identity and time

Publication numberOT-2026-000003148 · never reused
Internal UUID01a0a694-54a5-7edd-8574-e11a7501f527 · UUIDv7, RFC 9562
Publication timestamp2026-09-15T19:38:53.989834Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000003148
StatusPUBLIC

Content hashes

Canonical text5fc69b615e9c67029a963454f9d290ad823e1102a2c47529596b46e3a0d274d8
Markdown15201f771df030d919d5abf818dbdfdf954d84790291e918de87d04f67af60af
PDF
Publication page444df7d4382eeb339799533211489dea8b270d049691490dd9e5404477276793
Manifest336f85e3da12e3a361035acb7d4106c75b8cf8aa202f12c288aa82d2090a6f8e

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
SignatureLUEzM2R+7UmWao5XVhrWxq/JV+EWmfBz9Swa/XBAp6fEiFW2YjtwmWxqS/2Dds5fVLJa3q5gCaOYNwSCdXClBA==
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

2026-09-15T19:40:03.202083ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003148
observed 444df7d4382eeb339799533211489dea...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T19:40:03.048170ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003148/manifest.json
observed 336f85e3da12e3a361035acb7d4106c7...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T19:40:03.036548ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003148/publication.txt
observed 5fc69b615e9c67029a963454f9d290ad...
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