OT-2026-000000579
Publication integrity record
Method to determine an absolute position of an object, interferometer system, projection system and lithographic apparatus
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-2026-000000579) never changes.
Identity and time
| Publication number | OT-2026-000000579 · never reused |
|---|---|
| Internal UUID | 01a0a673-9065-77a3-aabc-6391dcc8eb3d · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:03:06.598051Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000579 |
| Status | PUBLIC |
Content hashes
| Canonical text | 806e0bd8f703af2e2c5d645050a074edfc3ec122e404ba62b540be8823d8fde8 |
|---|---|
| Markdown | 29351a5e86925f41e0fca3d89a6b0323b0f77226b40ff781587aafb32e5e233f |
| Publication page | c8d7c5a2fdf6003e6baacc491ae7ae62faf5d9e9a737de2c30146cb108a9cb21 |
| Manifest | b65c8d22eb097d2b3cf3a5ff5d19dd4bfdd2b60014222a1203c5f8334ac87cd2 |
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 | iChcHE1pmf+dPi/Sylz9sKSQGezYMJA6qLD1FjmmAz8pzBVpIRJActfzldoasO1aVpmOCemzIt+nrofISPWTCg== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T19:07:03Z batch OT-TS-2026-W38-001 · RFC 3161 token · inclusion proof root 6369baadb1a246009d149835804d20ba... |
|---|
Independent retrieval
| 2026-09-15T20:40:27.782005Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000579observed c8d7c5a2fdf6003e6baacc491ae7ae62...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T20:40:27.753277Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000579/manifest.jsonobserved b65c8d22eb097d2b3cf3a5ff5d19dd4b...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:40:27.741002Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000579/publication.txtobserved 806e0bd8f703af2e2c5d645050a074ed...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 |
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