OT-2026-000003121
Publication integrity record
Multiple size wafer vacuum chuck
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-2026-000003121) never changes.
Identity and time
| Publication number | OT-2026-000003121 · never reused |
|---|---|
| Internal UUID | 01a0a68f-2e44-7e0e-b224-bf034266a561 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:33:16.485143Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000003121 |
| Status | PUBLIC |
Content hashes
| Canonical text | b215338a07be490ff9c952a2553277e6d9d507a136ca69e83b6420bf2e3817c0 |
|---|---|
| Markdown | dfdd0babf9977f4c937037847450df72324f084e82138579a06db83ec20319c0 |
| Publication page | a4e9bbbf2e93c79b6339a6b6f9b8c72dc2fc78010d0ad4ab00f14e9ddfbd9bfe |
| Manifest | 2b7a1322bce96b3d6a025bda7d5709dc963526ced6850effb67639c60b9a23b2 |
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 | bjQDf6ZG3sJcGGfd5CnSBky6GRPjINuVQ/W0V0mI7aZBII8jaOK3smiDXpbWwGmvAwGtihOZymtef6UmkAfDDA== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T19:47:02Z batch OT-TS-2026-W38-003 · RFC 3161 token · inclusion proof root 713cd89b73be422b38f7894d4fb6a755... |
|---|
Independent retrieval
| 2026-09-16T12:42:39.999552Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003121observed a4e9bbbf2e93c79b6339a6b6f9b8c72d...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-16T12:42:39.548103Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003121/manifest.jsonobserved 2b7a1322bce96b3d6a025bda7d5709dc...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T12:42:39.055255Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003121/publication.mdobserved dfdd0babf9977f4c937037847450df72...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T12:42:38.686561Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003121/publication.txtobserved b215338a07be490ff9c952a2553277e6...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:40:06.004937Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003121observed a4e9bbbf2e93c79b6339a6b6f9b8c72d...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:40:05.976525Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003121/manifest.jsonobserved 2b7a1322bce96b3d6a025bda7d5709dc...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:40:05.963210Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003121/publication.txtobserved b215338a07be490ff9c952a2553277e6...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 |
|---|