OpenTechnical

OT-2026-000003477

Publication integrity record

Level/plumb indicator with tilt compensation

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-2026-000003477) never changes.

Identity and time

Publication numberOT-2026-000003477 · never reused
Internal UUID01a0a6c5-7c84-7cf6-b26d-8cdc3304eaca · UUIDv7, RFC 9562
Publication timestamp2026-09-15T20:32:35.460482Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000003477
StatusPUBLIC

Content hashes

Canonical text5d3244dea8b0c2af9c2de11fdda6ff5e42d09e1d2349ed06574e8f6104620f99
Markdown1f25b3bbeb7a9a2dac86f494958734b2f2f9de67005280ac66d95bd6bdbdc385
PDF
Publication page44e875fc63026fd973b083c879617734a3c1f9d2c6bec1e9a64cc7142f49ff92
Manifestc48b71909c8fcc0afe9bd0bf70d271d5137d3cb711eaaf390faa827fbaae3fbc

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
SignatureDk5QtYM6ur1/UBXOqvQWCHVpsYjg6QyNwdiHv3Hedgbu+xkL2JkrVn5QYFCw74Z8LsUqMm03YypI6ISNzwZcBg==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-15T20:36:25Z
batch OT-TS-2026-W38-006 · RFC 3161 token · inclusion proof
root 40fdb380c9f41bd58bb35c455dde2c7d...

Independent retrieval

2026-09-26T12:41:36.701580ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003477
observed 44e875fc63026fd973b083c879617734...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-09-26T12:41:36.651796ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003477/manifest.json
observed c48b71909c8fcc0afe9bd0bf70d271d5...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-09-26T12:41:36.571972ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003477/publication.md
observed 1f25b3bbeb7a9a2dac86f494958734b2...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-09-26T12:41:36.478164ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003477/publication.txt
observed 5d3244dea8b0c2af9c2de11fdda6ff5e...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-09-15T20:40:05.483464ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003477
observed 44e875fc63026fd973b083c879617734...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:40:05.324197ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003477/manifest.json
observed c48b71909c8fcc0afe9bd0bf70d271d5...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:40:05.309753ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000003477/publication.txt
observed 5d3244dea8b0c2af9c2de11fdda6ff5e...
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