OT-2026-000001656
Publication integrity record
System and method for a vertically adjustable tower crane
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-2026-000001656) never changes.
Identity and time
| Publication number | OT-2026-000001656 · never reused |
|---|---|
| Internal UUID | 01a0a677-7e77-7fb5-bfa7-08b71fa0f4f8 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:07:24.152090Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000001656 |
| Status | PUBLIC |
Content hashes
| Canonical text | dcd2ccfad6d63a4a9fa9465ab070c41d0c2201d1f2031d7ea1ec9c2254f47873 |
|---|---|
| Markdown | 05804323424b1ef6e430c189b6eba8240ebb0bb53558992ed6cafd33dd26312d |
| Publication page | dbb00637797faf53ba989f5aa79847f35e10991a40059c97db1e7cfd7a2eef45 |
| Manifest | 14bec7d76213c3e8e4a9646ad2ab82aa2b273a29774e96b7cfdca77d8711359b |
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 | aqQFxY02MhSHJGcxKAygQ7h2efBOxSGP3gkQvuTo8ZsgKF8PaMS1KXrPgllqfOTA03y5Bfj7blH2KJsRjZkzCw== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T19:27:02Z batch OT-TS-2026-W38-002 · RFC 3161 token · inclusion proof root 2d7e364e718bd6a32072ec57f9edc195... |
|---|
Independent retrieval
| 2026-09-17T00:41:25.601028Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001656observed dbb00637797faf53ba989f5aa79847f3...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-17T00:41:25.451876Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001656/manifest.jsonobserved 14bec7d76213c3e8e4a9646ad2ab82aa...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-17T00:41:25.263019Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001656/publication.mdobserved 05804323424b1ef6e430c189b6eba824...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-17T00:41:25.051436Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001656/publication.txtobserved dcd2ccfad6d63a4a9fa9465ab070c41d...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T08:44:51.897187Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001656observed dbb00637797faf53ba989f5aa79847f3...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T08:44:51.651863Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001656/manifest.jsonobserved 14bec7d76213c3e8e4a9646ad2ab82aa...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T08:44:51.393803Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001656/publication.mdobserved 05804323424b1ef6e430c189b6eba824...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T08:44:51.178084Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001656/publication.txtobserved dcd2ccfad6d63a4a9fa9465ab070c41d...fetched by grabo-systems from 34.44.131.203, 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 |
|---|