OT-2026-000000135
Publication integrity record
Using two or more pressure regulators in series as a flow regulator
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-2026-000000135) never changes.
Identity and time
| Publication number | OT-2026-000000135 · never reused |
|---|---|
| Internal UUID | 01a0a673-07e8-72e2-84d8-2204efa9ee2d · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:02:31.657273Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000135 |
| Status | PUBLIC |
Content hashes
| Canonical text | 50a9c906cb444111a81dd83589206e1bd8f498415976c82abe33ebf5026bd14c |
|---|---|
| Markdown | 22a97259a829e56073d9439508409fcd9a753d90793cfa3ca5fc06ea4b9042e5 |
| Publication page | 797f5c8efa5be057b92616180a6d0e9b2235b8b61bd1398f53a60a85a0ad48d3 |
| Manifest | 70e541b82d50d93d70412933f40d4d67df3af452c28397012ec0fe2c474dcb68 |
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 | ++EGWa5fI1yzxybdRhjAUpgl0O+CxQpDa/taSjhnoykGDcwI+x0dkZKp+QlbgOy7KXMi+CygzrSSvLh1szScBA== |
| 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
| 2026-09-15T21:12:46.194128Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000135observed 797f5c8efa5be057b92616180a6d0e9b...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T21:12:46.018166Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000135/manifest.jsonobserved 70e541b82d50d93d70412933f40d4d67...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T21:12:45.865943Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000135/publication.mdobserved 22a97259a829e56073d9439508409fcd...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T21:12:45.734089Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000135/publication.txtobserved 50a9c906cb444111a81dd83589206e1b...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T21:00:08.160103Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000135observed 797f5c8efa5be057b92616180a6d0e9b...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T21:00:08.131289Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000135/manifest.jsonobserved 70e541b82d50d93d70412933f40d4d67...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T21:00:08.117713Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000135/publication.txtobserved 50a9c906cb444111a81dd83589206e1b...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 |
|---|