OpenTechnical

OT-2026-000000430

Publication integrity record

Shaped Disc Pad

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-2026-000000430) never changes.

Identity and time

Publication numberOT-2026-000000430 · never reused
Internal UUID01a0a673-595d-7ef1-9bac-77783bc19a06 · UUIDv7, RFC 9562
Publication timestamp2026-09-15T19:02:52.509987Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000000430
StatusPUBLIC

Content hashes

Canonical textb9c44d2f542bcec25ad94e4aa29bb0807bdabb5fae23ec39515ed114f7c7061c
Markdown8742ece46488c5c1d1fb024481cae71bcbfb17bbf852c7ab5711cf7a29b77f6a
PDF
Publication page4faafbe210f686bc244637e447deb8dd7c1bb173efbf2743e518acdd3620b522
Manifest26db1f87d11af2a1bff1a97c1db7d6040bdd318bdb774d49ef423c10a1adbd59

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
Signature14T6VwLCBzG1rD0vdwCIsj3F4xl5z+UMTkwDCd1ECy+Ht2L/bzviAYPFXR2eyLZ8O9lGdpwWOSKihwQJpoH7Aw==
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

2026-10-29T12:41:05.427943ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000430
observed 4faafbe210f686bc244637e447deb8dd...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-10-29T12:41:05.373859ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000430/manifest.json
observed 26db1f87d11af2a1bff1a97c1db7d604...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-10-29T12:41:05.323139ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000430/publication.md
observed 8742ece46488c5c1d1fb024481cae71b...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-10-29T12:41:05.251993ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000430/publication.txt
observed b9c44d2f542bcec25ad94e4aa29bb080...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-09-16T04:23:14.883320ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000430
observed 4faafbe210f686bc244637e447deb8dd...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T04:23:14.869901ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000430/manifest.json
observed 26db1f87d11af2a1bff1a97c1db7d604...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T04:23:14.857380ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000430/publication.md
observed 8742ece46488c5c1d1fb024481cae71b...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T04:23:14.843523ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000000430/publication.txt
observed b9c44d2f542bcec25ad94e4aa29bb080...
fetched by instance-3.rotem.ai from 34.69.0.72, 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