OpenTechnical

OT-2026-000001677

Publication integrity record

Valve core removal tool

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-2026-000001677) never changes.

Identity and time

Publication numberOT-2026-000001677 · never reused
Internal UUID01a0a677-a93e-7579-b6cc-b1ae83f33065 · UUIDv7, RFC 9562
Publication timestamp2026-09-15T19:07:35.103243Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000001677
StatusPUBLIC

Content hashes

Canonical textdebf12a4d19d4ba0e72127798bc895ee230e53f8837dfed011741805d29a9142
Markdown82202a04769933fd0d78f00e2eb4604133099ed12e4a515655a04d5da89d40a0
PDF
Publication page572c738a0d2b4a3329276e5577beae354413da22ed30063301c30a818bc32c2e
Manifeste9750a7d4c527c8e7990e7cb4cd42409d113d5eeabdc7f94847281d97da9618e

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
Signatureng5f7zQTIS+wYPcB1JUXnCyJXsg63XrHuiQlpnQq5ntHYxIB3nSEBAFx+agH2tKK+3k7ALPOTx14YttB53r0Dg==
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

2026-09-15T20:00:14.971731ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000001677
observed 572c738a0d2b4a3329276e5577beae35...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:00:14.939563ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000001677/manifest.json
observed e9750a7d4c527c8e7990e7cb4cd42409...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T20:00:14.926872ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000001677/publication.txt
observed debf12a4d19d4ba0e72127798bc895ee...
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