OT-2026-000028400
Publication integrity record
Single bellows cup vacuum gripper, pump fed, sustained blow-off before set-down, on a tool changer
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-2026-000028400) never changes.
Identity and time
| Publication number | OT-2026-000028400 · never reused |
|---|---|
| Internal UUID | 01a0ae72-e2f5-7ae1-a759-fd1c9090c443 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-17T08:19:19.949572Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000028400 |
| Status | PUBLIC |
Content hashes
| Canonical text | b773472f837642640b8d7d3373c76a7690e9d61576830e0f6c15bb89c2b23d4f |
|---|---|
| Markdown | b4c3483956a1b7ff45545997db1d4e014e518623e9b515bfac62b1e3a2ed25c8 |
| Publication page | 8c315f753faea52540c7645f83c921f5248e124b2f309b71af8932ca07d8a7dc |
| Manifest | e1f25c7dac64e5807cf907be78f5a9085c2fb136ed1b2d3492d7e9b9b22b1e67 |
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 | r5G+C+D+0/brsZLDSkG/9Bnb79DOfdw9voaUtJESy77HGkAtbpa0Rz/yU2Lz1KfRpTsaytGOID040CIVMJPVBw== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-17T08:42:32Z batch OT-TS-2026-W38-020 · RFC 3161 token · inclusion proof root 7c99e0163c3f1d2dc0f1dec0442e2af7... |
|---|
Independent retrieval
| 2026-09-17T11:40:31.707072Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028400observed 8c315f753faea52540c7645f83c921f5...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-17T11:40:31.686542Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028400/manifest.jsonobserved e1f25c7dac64e5807cf907be78f5a908...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-17T11:40:31.669845Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028400/publication.mdobserved b4c3483956a1b7ff45545997db1d4e01...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-17T11:40:31.653154Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000028400/publication.txtobserved b773472f837642640b8d7d3373c76a76...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
| Custody package | Pending Custody packages are produced weekly. |
|---|