OT-2026-000003431
Publication integrity record
Vacuum cup construction
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-2026-000003431) never changes.
Identity and time
| Publication number | OT-2026-000003431 · never reused |
|---|---|
| Internal UUID | 01a0a6c0-03e0-7dfd-8c48-48bcb7c6a92a · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T20:26:36.897254Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000003431 |
| Status | PUBLIC |
Content hashes
| Canonical text | 660cb09abc4a04778dc6c7ebe447b1858cbb45365a1faa74c16e5bd6b4ae7c0a |
|---|---|
| Markdown | b3da8909d34e5d8b044b22acdbb8df0a70c4531a76974503df5210500f0ef0f9 |
| Publication page | 6c1da2c2e41e45a959c20fd7847b7479838407fdd44435ecba5c2d7ef4401d88 |
| Manifest | 63c1619b89da62dca7be79240af0caf591de61f9c4a569cce957030e4864ec7e |
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 | TSPHyVVa+qpwnLtJNWw84h2aqRfzJxIW+NkBd+Oy8VkvL1mBroaAqFJCDprJf9EEEqZIXizjn8xxHUIs1w1vBg== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T20:27:02Z batch OT-TS-2026-W38-005 · RFC 3161 token · inclusion proof root 0d980c01ea01b2d7f69845e24a85320c... |
|---|
Independent retrieval
| 2026-09-15T20:30:06.157912Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003431observed 6c1da2c2e41e45a959c20fd7847b7479...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T20:30:06.129518Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003431/manifest.jsonobserved 63c1619b89da62dca7be79240af0caf5...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T20:30:06.116089Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000003431/publication.txtobserved 660cb09abc4a04778dc6c7ebe447b185...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 |
|---|