OT-2026-000003474
Publication integrity record
Vacuum chuck apparatus for wet processing wafers
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-2026-000003474) never changes.
Identity and time
| Publication number | OT-2026-000003474 · never reused |
|---|---|
| Internal UUID | 01a0a6c5-216e-7b6c-a9e0-d114af749b02 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T20:32:12.143044Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000003474 |
| Status | PUBLIC |
Content hashes
| Canonical text | 7ab8aca2f22f12eef674e95fc76b73fd8d4849a41b8e71fc2f14d826c153270b |
|---|---|
| Markdown | fc2532c54c3addb75389ba427bfeac60a8600e75d09586e38ee679fb41a73de3 |
| Publication page | 2799009c24724a28a8636cc43ed2bf8618374f6c9e4f9a28dd4c26797cf795e6 |
| Manifest | 91436d732d958426d4ff96ae6718edc5ec1ca7d355d569e4c04da3197ce09ac0 |
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 | yuYUwgZA2RRz3AtbNyy5LbrWbqDwsLr6gNca20nx72pAD+C5oh7lXyhEiUPzsvPK+obtpnRinKPKbiEqWLJyDA== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T20:36:25Z batch OT-TS-2026-W38-006 · RFC 3161 token · inclusion proof root 40fdb380c9f41bd58bb35c455dde2c7d... |
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Independent retrieval
| 2026-10-24T04:23:21.732211Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003474observed 2799009c24724a28a8636cc43ed2bf86...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-24T04:23:21.686383Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003474/manifest.jsonobserved 91436d732d958426d4ff96ae6718edc5...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-10-24T04:23:21.672690Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003474/publication.mdobserved fc2532c54c3addb75389ba427bfeac60...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-10-24T04:23:21.575975Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003474/publication.txtobserved 7ab8aca2f22f12eef674e95fc76b73fd...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:40:05.787368Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003474observed 2799009c24724a28a8636cc43ed2bf86...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:40:05.754762Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003474/manifest.jsonobserved 91436d732d958426d4ff96ae6718edc5...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:40:05.741020Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003474/publication.txtobserved 7ab8aca2f22f12eef674e95fc76b73fd...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 |
|---|