OpenTechnical

OT-2026-000002149

Publication integrity record

Trolley mid-brake

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-2026-000002149) never changes.

Identity and time

Publication numberOT-2026-000002149 · never reused
Internal UUID01a0a67a-e35a-707b-8e2a-bfb85b483410 · UUIDv7, RFC 9562
Publication timestamp2026-09-15T19:11:06.587103Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000002149
StatusPUBLIC

Content hashes

Canonical textd6a135793c53bb229ffcc76aa608ee1b93381beea601bc9d23428576d1d9e1cf
Markdownbcf65947ee5ed39724ad42f5c689770a865f7e54ac5e3da82d6f036db55a6ec3
PDF
Publication page0f158816456acc293ccbbe795f477beac09f03a18625e8e7dc85736a1ac96b71
Manifest03f9b1d542cfc8d6d704c8d06147eb255ea9c04e68306821a71aa9ce2b85d7f1

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
SignatureW0lXxg44YJ8aAGFI/eUdJeEBnNk7jTt6ACoRW0KFUB+e390qb23SEMTGFc9QeX8j1Bw/uN28w3GE43MjJNI2AA==
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

2026-09-16T04:23:11.434413ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002149
observed 0f158816456acc293ccbbe795f477bea...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T04:23:11.420612ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002149/manifest.json
observed 03f9b1d542cfc8d6d704c8d06147eb25...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T04:23:11.404685ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002149/publication.md
observed bcf65947ee5ed39724ad42f5c689770a...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T04:23:11.337033ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002149/publication.txt
observed d6a135793c53bb229ffcc76aa608ee1b...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-15T20:43:48.741472ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002149
observed 0f158816456acc293ccbbe795f477bea...
fetched by grabo-systems from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:43:48.265373ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002149/manifest.json
observed 03f9b1d542cfc8d6d704c8d06147eb25...
fetched by grabo-systems from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:43:48.012014ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002149/publication.txt
observed d6a135793c53bb229ffcc76aa608ee1b...
fetched by grabo-systems from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T19:50:19.905287ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002149
observed 0f158816456acc293ccbbe795f477bea...
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