OT-2026-000003174
Publication integrity record
Flow sensor device and associated vacuum holding system
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-2026-000003174) never changes.
Identity and time
| Publication number | OT-2026-000003174 · never reused |
|---|---|
| Internal UUID | 01a0a698-d45a-786b-98fb-a99d9cf2c1c2 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:43:48.947464Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000003174 |
| Status | PUBLIC |
Content hashes
| Canonical text | 402d108e9f88ec67bafb855611c022ee8cfe25920c6f8c64faadd1ea627b0dee |
|---|---|
| Markdown | 0e34973b3e72e95b979c155a0708daa98165c256982fec2f88c3fad9122be490 |
| Publication page | 9983a200f088b1ace1141c9c9293be658a58f6d84f60930c7a305e304aa69e80 |
| Manifest | b9aaaf566cfd6e1873395e9093829761fc909621e130f5aff1fcfe972a87dca5 |
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 | AzUgKIdbnB/XZ4PYzBnKKSwRHrYnpZRtiqkWD9Jokih05VNsCMh0r3735+G2KUVxiCC0knkbaSlisciqvtf+BA== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T19:47:02Z batch OT-TS-2026-W38-003 · RFC 3161 token · inclusion proof root 713cd89b73be422b38f7894d4fb6a755... |
|---|
Independent retrieval
| 2026-10-03T00:42:11.719191Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003174observed 9983a200f088b1ace1141c9c9293be65...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-03T00:42:11.617760Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003174/manifest.jsonobserved b9aaaf566cfd6e1873395e9093829761...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-03T00:42:11.507103Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003174/publication.mdobserved 0e34973b3e72e95b979c155a0708daa9...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-03T00:42:11.324210Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003174/publication.txtobserved 402d108e9f88ec67bafb855611c022ee...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-17T04:23:09.778612Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003174observed 9983a200f088b1ace1141c9c9293be65...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-17T04:23:09.734429Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003174/manifest.jsonobserved b9aaaf566cfd6e1873395e9093829761...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-17T04:23:09.718915Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003174/publication.mdobserved 0e34973b3e72e95b979c155a0708daa9...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-17T04:23:09.680216Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003174/publication.txtobserved 402d108e9f88ec67bafb855611c022ee...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 |
|---|