OT-2026-000001697
Publication integrity record
Variable stiffness actuator systems and methods
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-2026-000001697) never changes.
Identity and time
| Publication number | OT-2026-000001697 · never reused |
|---|---|
| Internal UUID | 01a0a677-cf89-7d93-869e-4c7f20f6ca56 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:07:44.905417Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000001697 |
| Status | PUBLIC |
Content hashes
| Canonical text | 280f2994fd7889c2a09c2046ec9353cf0efe84032d892df7ff722eb8ef8c59f8 |
|---|---|
| Markdown | 92d15278945f0f3250fa5c410761a0b2ae26c8d391165a546f3d7bc9f35d4522 |
| Publication page | 19128d8c2d07e361445a2008dc2af5f1c9cb748426c71aa2543255051d1f96b1 |
| Manifest | 421fd037b132e7921a9f62b6f50ee05bc8aaf9e7241a56924d8412a075e20f9a |
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 | wVLswJfIxQpRuXLJ2iXvgaHqyLxVA8RcKqDZKGNcgHf6oI2cL08tkygIMOYQwWhqbrwT3dQ2fA8RI4FFNPFQAw== |
| 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
| 2026-10-03T00:42:04.787674Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001697observed 19128d8c2d07e361445a2008dc2af5f1...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-03T00:42:04.667269Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001697/manifest.jsonobserved 421fd037b132e7921a9f62b6f50ee05b...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-03T00:42:04.536651Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001697/publication.mdobserved 92d15278945f0f3250fa5c410761a0b2...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-03T00:42:04.331553Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001697/publication.txtobserved 280f2994fd7889c2a09c2046ec9353cf...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-25T12:41:21.656236Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001697observed 19128d8c2d07e361445a2008dc2af5f1...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-25T12:41:21.606270Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001697/manifest.jsonobserved 421fd037b132e7921a9f62b6f50ee05b...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-25T12:41:21.517721Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001697/publication.mdobserved 92d15278945f0f3250fa5c410761a0b2...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-25T12:41:21.380615Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001697/publication.txtobserved 280f2994fd7889c2a09c2046ec9353cf...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 |
|---|