OT-2026-000002931
Publication integrity record
Method for lifting and lowering blades without using a crane, and devices used
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-2026-000002931) never changes.
Identity and time
| Publication number | OT-2026-000002931 · never reused |
|---|---|
| Internal UUID | 01a0a67f-90b9-7466-8bcf-0f6c79d61188 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:16:13.113564Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000002931 |
| Status | PUBLIC |
Content hashes
| Canonical text | 02d1a1a2c15456714dbddc0e53a1f37ac2de558f2f6fd8bea9fe68409d507547 |
|---|---|
| Markdown | c1d6c68dc5c1ff81559ddba49fed328efad5216e0a016e82250c320ddb6072dc |
| Publication page | ec28cd9a1644c6ab52fce83c08a82e4c87fd11ce89c8584d6cc6754d3681937c |
| Manifest | c976660877cb579e4cb3d07c5b87afca25176d8d05558c21530494d254a5b9bb |
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 | MN/SoPooSWGdshDUD7K4dqKYLSGH9nLfO0VnfGAMFh4cywflG12qZFQqcwQhAMAnwFbba3QX2AJE+hbPkiNZBw== |
| 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
| 2026-09-15T19:20:17.969994Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002931observed ec28cd9a1644c6ab52fce83c08a82e4c...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T19:20:17.939441Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002931/manifest.jsonobserved c976660877cb579e4cb3d07c5b87afca...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:20:17.927578Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002931/publication.txtobserved 02d1a1a2c15456714dbddc0e53a1f37a...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 |
|---|