OT-2026-000001993
Publication integrity record
A skyscraper façade inspection robot and a building maintenance robot and system
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-2026-000001993) never changes.
Identity and time
| Publication number | OT-2026-000001993 · never reused |
|---|---|
| Internal UUID | 01a0a679-e983-792f-9902-b7172f1ab0ad · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:10:02.628356Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000001993 |
| Status | PUBLIC |
Content hashes
| Canonical text | ef92b723bae2c757a4301a03a7eb99baf91677ca4280ae4d60c3bb24c4df535b |
|---|---|
| Markdown | 803df2f352e2b8ea7b3211cb154cc679c8f9b8f9d6a8884783f9d3646eb044be |
| Publication page | 85c4d35097501560aba34e3276af934748ababebf186fb0b3cc8613d6045135f |
| Manifest | b102710f7a3582c304bab6de7ca964ef084d68dfa9c6fbc40a1285ddcd22acd6 |
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 | 6CwnW2d2sPoNbcR8crtt2uDPBMp1excWEmvjgWCOBbJZHHMjhhlN4l1mYo1isWXfqdcMqvslYxCllMQdEruPAA== |
| 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
| 2026-09-17T04:41:59.534486Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001993observed 85c4d35097501560aba34e3276af9347...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-17T04:41:59.253701Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001993/manifest.jsonobserved b102710f7a3582c304bab6de7ca964ef...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-17T04:41:58.873637Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001993/publication.mdobserved 803df2f352e2b8ea7b3211cb154cc679...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-17T04:41:58.489454Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001993/publication.txtobserved ef92b723bae2c757a4301a03a7eb99ba...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:10:03.117345Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001993observed 85c4d35097501560aba34e3276af9347...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:10:03.082856Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001993/manifest.jsonobserved b102710f7a3582c304bab6de7ca964ef...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:10:02.922335Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000001993/publication.txtobserved ef92b723bae2c757a4301a03a7eb99ba...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 |
|---|