OT-2026-000003400
Publication integrity record
Poppet valve and valve assemblies utilizing same
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-2026-000003400) never changes.
Identity and time
| Publication number | OT-2026-000003400 · never reused |
|---|---|
| Internal UUID | 01a0a6bc-0f05-747d-b06a-f9069341e15a · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T20:22:17.605524Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000003400 |
| Status | PUBLIC |
Content hashes
| Canonical text | 9c4fab5397c038c3dbf11b6005652a297a314b84015c7711aa869014d9f22a14 |
|---|---|
| Markdown | 8f902e37aea8292955791f7f8d5492cb9becdc3f9d9a1e8e61d453f17147a95e |
| Publication page | 1a2a57a8393599061039f3a78766d2ac33f550c22cca468ac1bce77749f7f9ab |
| Manifest | ffc4fb7b709fd568f2b3b402e2a732fba5267dd222a61414c77c35d6acc68a59 |
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 | dT6/RdMn6doyB806rV2OR+wpLGrpk1MGf8MEgP3rWQUIvSBQvfP75Irib+AbdHVrlitBHnLSKq+KDD2St2d/Ag== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T20:27:02Z batch OT-TS-2026-W38-005 · RFC 3161 token · inclusion proof root 0d980c01ea01b2d7f69845e24a85320c... |
|---|
Independent retrieval
| 2026-10-18T08:42:00.236103Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003400observed 1a2a57a8393599061039f3a78766d2ac...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-18T08:42:00.176364Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003400/manifest.jsonobserved ffc4fb7b709fd568f2b3b402e2a732fb...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-18T08:42:00.067700Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003400/publication.mdobserved 8f902e37aea8292955791f7f8d5492cb...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-18T08:41:59.990557Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003400/publication.txtobserved 9c4fab5397c038c3dbf11b6005652a29...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T04:23:11.938784Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003400observed 1a2a57a8393599061039f3a78766d2ac...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-16T04:23:11.901425Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003400/manifest.jsonobserved ffc4fb7b709fd568f2b3b402e2a732fb...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-16T04:23:11.888368Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003400/publication.mdobserved 8f902e37aea8292955791f7f8d5492cb...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-16T04:23:11.876620Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003400/publication.txtobserved 9c4fab5397c038c3dbf11b6005652a29...fetched by instance-3.rotem.ai from 34.69.0.72, 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 |
|---|