OT-2026-000000210
Publication integrity record
Double bellows valve for preventing undesired valve failure positions
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-2026-000000210) never changes.
Identity and time
| Publication number | OT-2026-000000210 · never reused |
|---|---|
| Internal UUID | 01a0a673-1c1c-7d95-8ff9-df26279f9079 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:02:36.828653Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000210 |
| Status | PUBLIC |
Content hashes
| Canonical text | 67219454e98dbffb5fc806ac9e27ea0ae25f50d82892c968edf5a4d02efda9cb |
|---|---|
| Markdown | c626c2d76a5a7c11457039a224e95bed4ec9d513980f633af6668068bdecedee |
| Publication page | 9c99e2773b82d099b08d40615cd98f26a15f08e4d0756d306b4c068b01b4fea1 |
| Manifest | 2569f13a7ab6240ff7af9a1baf8001225c584e0de41d0fd27a9d68d23771dde3 |
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 | Ijz9Q50uskWRSODNg95u0VGjlQCnTpELlOVVChtw+Z9Amz0v5ihpFas/HD4vWLPvSdTve+byUUKbDVfOP/Z2CA== |
| 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
| 2026-10-18T04:41:29.481312Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000210observed 9c99e2773b82d099b08d40615cd98f26...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-18T04:41:29.398601Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000210/manifest.jsonobserved 2569f13a7ab6240ff7af9a1baf800122...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-18T04:41:29.318235Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000210/publication.mdobserved c626c2d76a5a7c11457039a224e95bed...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-18T04:41:29.200589Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000210/publication.txtobserved 67219454e98dbffb5fc806ac9e27ea0a...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:50:36.519507Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000210observed 9c99e2773b82d099b08d40615cd98f26...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:50:36.488581Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000210/manifest.jsonobserved 2569f13a7ab6240ff7af9a1baf800122...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:50:36.351332Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000210/publication.txtobserved 67219454e98dbffb5fc806ac9e27ea0a...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 |
|---|