OT-2026-000004242
Publication integrity record
Porous face vacuum gripper, three zone face, six outlet manifold, pump fed
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-2026-000004242) never changes.
Identity and time
| Publication number | OT-2026-000004242 · never reused |
|---|---|
| Internal UUID | 01a0a912-783b-7a1b-9505-8e8365c73e93 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-16T07:15:55.070293Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000004242 |
| Status | PUBLIC |
Content hashes
| Canonical text | 8bcb2ee192ea42ebdc3da7047026736a60754693256d4f4688c33e9e792c4169 |
|---|---|
| Markdown | baa502d0aa824a9b4bfca487185c67f880763bcda36673a3b22619d6ca4a87e9 |
| Publication page | cc0e7ae306a6cb5c7dc05c34ecdcbe90fa2a4826b3656fa8220b9883474abc04 |
| Manifest | 0f70ba3834060c5ba0185c37e02b8388f0ae9564d3297eafca36a0d72d0f200b |
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 | n+l+FIWT7svjBMKha7i8E33nMngL8gqlUQMaThrmZZ5gZOykdP9zwtmNyeLP3XmyN2fuCww2QiuJWw6knskMDQ== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-16T07:27:02Z batch OT-TS-2026-W38-009 · RFC 3161 token · inclusion proof root aada101caea153fd76622afa3661a5b8... |
|---|
Independent retrieval
| 2026-10-17T00:41:53.582815Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004242observed cc0e7ae306a6cb5c7dc05c34ecdcbe90...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-17T00:41:53.500083Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004242/manifest.jsonobserved 0f70ba3834060c5ba0185c37e02b8388...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-17T00:41:53.451991Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004242/publication.mdobserved baa502d0aa824a9b4bfca487185c67f8...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-17T00:41:53.312943Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004242/publication.txtobserved 8bcb2ee192ea42ebdc3da7047026736a...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-12T08:41:53.816367Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004242observed cc0e7ae306a6cb5c7dc05c34ecdcbe90...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-12T08:41:53.741134Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004242/manifest.jsonobserved 0f70ba3834060c5ba0185c37e02b8388...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-12T08:41:53.661415Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004242/publication.mdobserved baa502d0aa824a9b4bfca487185c67f8...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-12T08:41:53.474715Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000004242/publication.txtobserved 8bcb2ee192ea42ebdc3da7047026736a...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 |
|---|