OT-2026-000003444
Publication integrity record
Integrated pneumatic valve/sensor assembly for vacuum supply apparatus
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-2026-000003444) never changes.
Identity and time
| Publication number | OT-2026-000003444 · never reused |
|---|---|
| Internal UUID | 01a0a6c1-aaff-7629-a61c-7f33b2e1a0f8 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T20:28:25.216058Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000003444 |
| Status | PUBLIC |
Content hashes
| Canonical text | 5a7462a18555748fa4f01b8d305d4348de5b29e13722c94e620f8be9f3ee2c2b |
|---|---|
| Markdown | 07a206191d25c4b3571af89cf741be6446adf413c745a1d89dc50107457a4e2b |
| Publication page | bbe1d8b14770eebd0a28054c2501e33fa0129982f09473ef1bc381fbdafe09d4 |
| Manifest | 4ba216721469250667d242c951521c503a56857ca1ed1221739dbe2e1de0cc14 |
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 | uhFwCdA0r35srL7Eq0tPwVn9+aeW4/FA9fRUvmqR3IgJVCoPTIMtBSbszQ36JXvUath62zlYtlKpZ4I2/m6ODg== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T20:36:25Z batch OT-TS-2026-W38-006 · RFC 3161 token · inclusion proof root 40fdb380c9f41bd58bb35c455dde2c7d... |
|---|
Independent retrieval
| 2026-09-17T04:43:25.303358Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003444observed bbe1d8b14770eebd0a28054c2501e33f...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-17T04:43:24.976317Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003444/manifest.jsonobserved 4ba216721469250667d242c951521c50...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-17T04:43:24.596550Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003444/publication.mdobserved 07a206191d25c4b3571af89cf741be64...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-17T04:43:24.099308Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003444/publication.txtobserved 5a7462a18555748fa4f01b8d305d4348...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T12:41:37.983069Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003444observed bbe1d8b14770eebd0a28054c2501e33f...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T12:41:37.816333Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003444/manifest.jsonobserved 4ba216721469250667d242c951521c50...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T12:41:37.642201Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003444/publication.mdobserved 07a206191d25c4b3571af89cf741be64...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T12:41:37.348958Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003444/publication.txtobserved 5a7462a18555748fa4f01b8d305d4348...fetched by grabo-systems from 34.44.131.203, 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 |
|---|