OpenTechnical

OT-2026-000000800

Publication integrity record

Durability testing apparatus for water drainage flap, and testing method using the durability testing apparatus for water drainage flap

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-2026-000000800) never changes.

Identity and time

Publication numberOT-2026-000000800 · never reused
Internal UUID01a0a673-d791-7e59-9479-03ea25ab3475 · UUIDv7, RFC 9562
Publication timestamp2026-09-15T19:03:24.817632Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000000800
StatusPUBLIC

Content hashes

Canonical text407ecaa0184cfb2944cbf819c10c70b79d9dcc2b93a7ec77c62f8c2d4d2f55a0
Markdowne2216151feca67158e9e605c29d0d2485abfa0c0130727c0cb9b241f321939d1
PDF
Publication page65a7e87919adf2f9cb80121d11cb3ed902723fbb4026ed3a01c47f4ae4c9d772
Manifest581352c48964916258daf4d24a3fa6c14807c2b80dde95d3456b29e59aaef6b6

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
SignaturettJtfkJawoQEG+HS5WaU08tqhMeNrg9umGQjImfGaM6ynzUDEG82MA0y7uWsbDjmVUdUH1UqB68sjHAlVbThCw==
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

2026-09-15T20:30:33.950399ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000800
observed 65a7e87919adf2f9cb80121d11cb3ed9...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:30:33.922030ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000800/manifest.json
observed 581352c48964916258daf4d24a3fa6c1...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:30:33.910248ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000800/publication.txt
observed 407ecaa0184cfb2944cbf819c10c70b7...
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