OpenTechnical

OT-2026-000000291

Publication integrity record

Edge protection barrier separate handrail

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-2026-000000291) never changes.

Identity and time

Publication numberOT-2026-000000291 · never reused
Internal UUID01a0a673-3275-7701-b389-44c5c6580970 · UUIDv7, RFC 9562
Publication timestamp2026-09-15T19:02:42.549589Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000000291
StatusPUBLIC

Content hashes

Canonical text74b0121c0513bf418422707ec58636536103a94b8bf813a78781399a115649d6
Markdown5555b42c2b36d68bb94ee36dccd53c97b12f97df6a727aaa2f89d2ae75e2d7a6
PDF
Publication pagedff4ef74d861c74acb7850781c0165a839649db32c5978bcece2ff0941b80812
Manifestad147a6e059a94220e03db08cd641688238df6ac77e25f924d528d96e975e7d3

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
Signatureqc8iIeGJFjV1tXftxd6lfRGU3V2R+UvWhwYdO3NTa8xc5sAVHqmuJ7yJ3ufE37o+B9ByfV/iHD8yfeJXwsUdDw==
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

2026-10-05T08:41:24.844126ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000291
observed dff4ef74d861c74acb7850781c0165a8...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-10-05T08:41:24.798653ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000291/manifest.json
observed ad147a6e059a94220e03db08cd641688...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-10-05T08:41:24.754172ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000291/publication.md
observed 5555b42c2b36d68bb94ee36dccd53c97...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-10-05T08:41:24.679367ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000291/publication.txt
observed 74b0121c0513bf418422707ec5863653...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-09-15T20:50:27.348070ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000291
observed dff4ef74d861c74acb7850781c0165a8...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:50:27.320481ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000291/manifest.json
observed ad147a6e059a94220e03db08cd641688...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:50:27.307097ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000291/publication.txt
observed 74b0121c0513bf418422707ec5863653...
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