OT-2026-000002906
Publication integrity record
Unidirectional valve for suction-based end effector of robotic arm
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-2026-000002906) never changes.
Identity and time
| Publication number | OT-2026-000002906 · never reused |
|---|---|
| Internal UUID | 01a0a67f-6fcf-7144-a355-acaf4026f9dd · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:16:04.687758Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000002906 |
| Status | PUBLIC |
Content hashes
| Canonical text | 096af112e66223cf1d959773cd3e310c37dae7526b8f6e41de89122bf5a63ac6 |
|---|---|
| Markdown | 4f655136908ab2e51ac0e86ff070b677346d4d5eedb3faff2c050cbd96a4c6a6 |
| Publication page | 10658de872029105e38d0f2f96734f9871753209d1bbaa4488be9cd96c250193 |
| Manifest | 2b5f3fed83e42c8a4c477ee1e8c2c57f161ca8ff5a125822a2ca40acb7b30f67 |
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 | mjBCh8v8NbbkBrn7p1jzpYVbYiwi3SBC2l7JKrAotPLJKBng9838nbtXN8f/DQoVspG3ZRgHAbgEoXl5hQTWAA== |
| 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
| 2026-09-15T21:11:39.248179Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002906observed 10658de872029105e38d0f2f96734f98...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T21:11:39.214109Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002906/manifest.jsonobserved 2b5f3fed83e42c8a4c477ee1e8c2c57f...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-15T21:11:39.197887Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002906/publication.txtobserved 096af112e66223cf1d959773cd3e310c...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:20:20.730970Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002906observed 10658de872029105e38d0f2f96734f98...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:20:20.701528Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002906/manifest.jsonobserved 2b5f3fed83e42c8a4c477ee1e8c2c57f...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:20:20.687869Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002906/publication.txtobserved 096af112e66223cf1d959773cd3e310c...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 |
|---|