OT-2026-000001889
Publication integrity record
High pressure burrowing everting robot with sensorized skin and for subsurface sensor deployment
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-2026-000001889) never changes.
Identity and time
| Publication number | OT-2026-000001889 · never reused |
|---|---|
| Internal UUID | 01a0a679-3fcb-799b-9149-9f008f77d78d · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:09:19.179576Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000001889 |
| Status | PUBLIC |
Content hashes
| Canonical text | 47576555bc9efe9c1494a605e0ede19ee84c2978598cbc9406de8f8e743ff675 |
|---|---|
| Markdown | 78868b0c17e4661f7e58f7fcef81d5f9a300e5c6fe8c5529d65762288709e337 |
| Publication page | 8500cf7d7da4c4cc53fdfae2b6a1470f547316fd0c7126bd7877a52d2ae80735 |
| Manifest | 63ffad6acef0f8c1eaa32513dc83089785d0443499fc8459b8c8530f1b84b312 |
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 | k4una+SevRtxJ9iOS4W9Y2AQuWxiEc1fGeVErns1zKTnjwcxrJx010wRz7aEQ7Hqe4eGo7Xw6qPf4rKJr5dxCA== |
| 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
| 2026-09-26T16:41:14.159223Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001889observed 8500cf7d7da4c4cc53fdfae2b6a1470f...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-26T16:41:14.110929Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001889/manifest.jsonobserved 63ffad6acef0f8c1eaa32513dc830897...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-26T16:41:14.062792Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001889/publication.mdobserved 78868b0c17e4661f7e58f7fcef81d5f9...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-26T16:41:13.920908Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001889/publication.txtobserved 47576555bc9efe9c1494a605e0ede19e...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:10:14.614040Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001889observed 8500cf7d7da4c4cc53fdfae2b6a1470f...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:10:14.584816Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001889/manifest.jsonobserved 63ffad6acef0f8c1eaa32513dc830897...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:10:14.450149Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001889/publication.txtobserved 47576555bc9efe9c1494a605e0ede19e...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 |
|---|