OT-2026-000000750
Publication integrity record
Simulated eggshell perforation test device
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-2026-000000750) never changes.
Identity and time
| Publication number | OT-2026-000000750 · never reused |
|---|---|
| Internal UUID | 01a0a673-c780-7a9d-852d-e12834ef4ee4 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:03:20.704616Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000750 |
| Status | PUBLIC |
Content hashes
| Canonical text | f98605cf353a156cbafcf108a2803395314b397094113be56b2bbfcb805a60eb |
|---|---|
| Markdown | 772459f6b5f64e60beb18f5d35e76db84ae08b0703859c2f0c42d66faa13cb9f |
| Publication page | 68d76fd658fea6c657a8c7dfbe66a20a2070e8779778646b4c52b01de5198d98 |
| Manifest | 6aee6c87d48b8ecd5c0a28ed8e8025d1711c006d45ba137d81131489f9e12476 |
SHA-256, lowercase hex, over the exact bytes of each published file. Every figure is hashed individually in the manifest.
Manifest signature
| Algorithm | Ed25519 · key
OT-SIGN-2026-01 · Verified |
|---|---|
| Signature | 6efuf4vmaBn2ovQD9nY5lrXUH/VYB6PmXhC7w8CLO28432zNBWEcOtxDfdJ+x4Cq5nKsKCuyO0vi7OieihvkDg== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T19:07:03Z batch OT-TS-2026-W38-001 · RFC 3161 token · inclusion proof root 6369baadb1a246009d149835804d20ba... |
|---|
Independent retrieval
| 2026-09-17T04:44:06.059971Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000750observed 68d76fd658fea6c657a8c7dfbe66a20a...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-17T04:44:05.852159Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000750/manifest.jsonobserved 6aee6c87d48b8ecd5c0a28ed8e8025d1...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-17T04:44:05.690712Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000750/publication.mdobserved 772459f6b5f64e60beb18f5d35e76db8...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-17T04:44:05.529664Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000750/publication.txtobserved f98605cf353a156cbafcf108a2803395...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:40:08.569035Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000750observed 68d76fd658fea6c657a8c7dfbe66a20a...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:40:08.538750Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000750/manifest.jsonobserved 6aee6c87d48b8ecd5c0a28ed8e8025d1...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:40:08.523418Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000750/publication.txtobserved f98605cf353a156cbafcf108a2803395...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 archive | Pending 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-W38 | OpenTechnical-Custody-2026-W38.tar.zstf2fc69d02142424a578267e5e3a6d3bb... · 402,218,449 bytes · held by held on site pending an external custodian · retention permanent |
|---|