OpenTechnical

OT-2026-000002471

Publication integrity record

Skills for safety in robotic control systems

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-2026-000002471) never changes.

Identity and time

Publication numberOT-2026-000002471 · never reused
Internal UUID01a0a67c-e435-7682-bcd3-af45fc0bd7f8 · UUIDv7, RFC 9562
Publication timestamp2026-09-15T19:13:17.878782Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000002471
StatusPUBLIC

Content hashes

Canonical text71530932569ae5ee06ab62076e25b652e4812e3fda6ca3a2cef9417cfc918e49
Markdown428e4d28cbb5c7f7412f128746cca72e547766b415cb285ab923de662e9bf85e
PDF
Publication page7f5e8bface9405fa43f968a35b728d180fa9835b5785f5bded752634e689fc69
Manifest5b43ee8b73f8bf22db4cae9fefdf217a2c901d60dec3b5f051bc85e054207971

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
Signaturej1GPvd6nqLY9nV//eiIQ+idUjSf/xY6CbvSRFZPm009VJYIdCO8qav9IMrgUV7FCkY4dcOzSU8I0ACgzT2bSBQ==
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

2026-10-20T04:41:10.236863ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002471
observed 7f5e8bface9405fa43f968a35b728d18...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-10-20T04:41:10.187561ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002471/manifest.json
observed 5b43ee8b73f8bf22db4cae9fefdf217a...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-10-20T04:41:10.134637ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002471/publication.md
observed 428e4d28cbb5c7f7412f128746cca72e...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-10-20T04:41:09.988887ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002471/publication.txt
observed 71530932569ae5ee06ab62076e25b652...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-09-15T19:40:11.769338ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002471
observed 7f5e8bface9405fa43f968a35b728d18...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T19:40:11.742594ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002471/manifest.json
observed 5b43ee8b73f8bf22db4cae9fefdf217a...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T19:40:11.731332ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002471/publication.txt
observed 71530932569ae5ee06ab62076e25b652...
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