OpenTechnical

OT-2026-000002221

Publication integrity record

Recessed spring for a ratchet 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-2026-000002221) never changes.

Identity and time

Publication numberOT-2026-000002221 · never reused
Internal UUID01a0a67b-4cf3-7019-b8aa-53d68b0a57c2 · UUIDv7, RFC 9562
Publication timestamp2026-09-15T19:11:33.619803Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000002221
StatusPUBLIC

Content hashes

Canonical text3a70301d98884d3bef7ad5ea5f4340a1cfc3b803c629c476669ba347d6c7bbbd
Markdown907d09fbadd018c27c9ad1bf06da65bc70c4ee954171a9817bfb5bea970cbb98
PDF
Publication pagecf69f1a70bc964b20ad05378e4898913d5e1ba0fe8f3a203ac92aa394344a519
Manifest08ee5d6a7f74c94d0844a1f0f5446c6117ea60e4ed22bb995192fa561f805dbe

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
SignatureRLZwp2QQpzZNk498iCrAmGVgD2nHuPqJRwvZWwmPcxhRVbObQsCRAzjuHWyZW3jcTV83ve2WQRylBHB6jI4OAg==
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

2026-10-25T04:41:07.218102ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002221
observed cf69f1a70bc964b20ad05378e4898913...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-10-25T04:41:07.154936ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002221/manifest.json
observed 08ee5d6a7f74c94d0844a1f0f5446c61...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-10-25T04:41:07.095988ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002221/publication.md
observed 907d09fbadd018c27c9ad1bf06da65bc...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-10-25T04:41:06.944193ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002221/publication.txt
observed 3a70301d98884d3bef7ad5ea5f4340a1...
fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139
2026-09-15T19:50:11.929528ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002221
observed cf69f1a70bc964b20ad05378e4898913...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T19:50:11.902437ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002221/manifest.json
observed 08ee5d6a7f74c94d0844a1f0f5446c61...
fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139
2026-09-15T19:50:11.889631ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000002221/publication.txt
observed 3a70301d98884d3bef7ad5ea5f4340a1...
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