OpenTechnical

OT-2026-000002505

Publication integrity record

Method for hemming edges of components

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-2026-000002505) never changes.

Identity and time

Publication numberOT-2026-000002505 · never reused
Internal UUID01a0a67d-161c-72c6-bc59-d6f41416387f · UUIDv7, RFC 9562
Publication timestamp2026-09-15T19:13:30.653215Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000002505
StatusPUBLIC

Content hashes

Canonical textca59f40a791b4673d82404798c88b76e5c1b2e2d6d7bd346a81c1b65fa7c9fc9
Markdown57dabfab1468cf66edfa20d0b873142196284d0011098ab241807fdd853a3e4b
PDF
Publication pagee20fd3ab1391c1a58271729139e851282a80b27c7acfb8ce2392a9160096d202
Manifest8ea2d5cbec6b22e9b20aedfb2f97e1be7fafbd8cd8b590ec533589b672e19221

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
Signature3C9KBc+PgNERoDUZJbDDBneaefW8orHmBEd2tB2a9Msz3KyJ8TbS+J4Xsw8aZ1Q3Bile1sSQzQR7iIFZQJPNAw==
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

2026-09-16T04:44:12.573886ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002505
observed e20fd3ab1391c1a58271729139e85128...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-09-16T04:44:12.443561ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002505/manifest.json
observed 8ea2d5cbec6b22e9b20aedfb2f97e1be...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-09-16T04:44:12.216596ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002505/publication.md
observed 57dabfab1468cf66edfa20d0b8731421...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-09-16T04:44:12.053081ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002505/publication.txt
observed ca59f40a791b4673d82404798c88b76e...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-09-15T19:30:39.395843ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002505
observed e20fd3ab1391c1a58271729139e85128...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T19:30:39.363332ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002505/manifest.json
observed 8ea2d5cbec6b22e9b20aedfb2f97e1be...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T19:30:39.350493ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002505/publication.txt
observed ca59f40a791b4673d82404798c88b76e...
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