OpenTechnical

OT-2026-000002233

Publication integrity record

Fire Hydrant Repair Tool, And Systems And Methods Of Using Same

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-2026-000002233) never changes.

Identity and time

Publication numberOT-2026-000002233 · never reused
Internal UUID01a0a67b-5e9c-748a-93e3-113a276f70c9 · UUIDv7, RFC 9562
Publication timestamp2026-09-15T19:11:38.140956Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000002233
StatusPUBLIC

Content hashes

Canonical text31806b7924b21fa2572d45a7c23e171f32a8a0ff29e27db65272e67fd2e23d9e
Markdown8755b4b9791bc8a2b18d42d0384918203b0bfbefe9ceb37e53309657df1f2a52
PDF
Publication page039ed2494e5837b29306e3d04d10543e39270c28b0abb4102da002726b30ec22
Manifest35b17abceac8cda4184c3ee07bcfaa5e556d23d4aae1e35319720c08c8860878

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
SignatureSxZuoSfOYhxHWKI08C7TINFLUHKuf+9muPaXML9TEHr3mdApnbryIy90JUNXsVjozlzedlaNbX1fO9m0uNngAw==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-15T19:27:02Z
batch OT-TS-2026-W38-002 · RFC 3161 token · inclusion proof
root 2d7e364e718bd6a32072ec57f9edc195...

Independent retrieval

2026-09-16T04:41:04.450284ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002233
observed 039ed2494e5837b29306e3d04d10543e...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-09-16T04:41:04.225294ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002233/manifest.json
observed 35b17abceac8cda4184c3ee07bcfaa5e...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-09-16T04:41:03.835314ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002233/publication.md
observed 8755b4b9791bc8a2b18d42d038491820...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-09-16T04:41:03.661139ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002233/publication.txt
observed 31806b7924b21fa2572d45a7c23e171f...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-09-16T04:23:16.053361ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002233
observed 039ed2494e5837b29306e3d04d10543e...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T04:23:16.040401ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002233/manifest.json
observed 35b17abceac8cda4184c3ee07bcfaa5e...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T04:23:16.026660ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002233/publication.md
observed 8755b4b9791bc8a2b18d42d038491820...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T04:23:15.984178ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002233/publication.txt
observed 31806b7924b21fa2572d45a7c23e171f...
fetched by instance-3.rotem.ai from 34.69.0.72, 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