OT-2026-000002587
Publication integrity record
Hydraulic valve for connecting two transverse pipes
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-2026-000002587) never changes.
Identity and time
| Publication number | OT-2026-000002587 · never reused |
|---|---|
| Internal UUID | 01a0a67d-91e6-7fff-8b84-bec93bc61d14 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:14:02.343067Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000002587 |
| Status | PUBLIC |
Content hashes
| Canonical text | 231a0acbcb3f5275bcd8bdca1caa77526800008fec1b796bf74db43787beaa5b |
|---|---|
| Markdown | ba0039f1fed9715d82dc9d6c7371c3825976fb6f15a63546808ef84fd9d39a48 |
| Publication page | 1c04fc67552c9d4dde115589cee054a92dca6ae6139df1ae1fcd9e0417ceaae7 |
| Manifest | 88c6f4b3f51733fabfc8030163edc563fa6594cdaf0104baa214e8abf91bb987 |
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 | GwFYOkGCVLhRnWCCsZbIEa/qSizkZCo8TlgS0w8ymjIUIyjKza3SzWKZ1iZjarncb6LZ42c/obaDznKyiS8MDA== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T19:27:02Z batch OT-TS-2026-W38-002 · RFC 3161 token · inclusion proof root 2d7e364e718bd6a32072ec57f9edc195... |
|---|
Independent retrieval
| 2026-09-15T19:30:28.384514Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002587observed 1c04fc67552c9d4dde115589cee054a9...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T19:30:28.354866Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002587/manifest.jsonobserved 88c6f4b3f51733fabfc8030163edc563...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:30:28.340255Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002587/publication.txtobserved 231a0acbcb3f5275bcd8bdca1caa7752...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 |
|---|