OT-2026-000000516
Publication integrity record
Step Support for Retractable Stairs
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-2026-000000516) never changes.
Identity and time
| Publication number | OT-2026-000000516 · never reused |
|---|---|
| Internal UUID | 01a0a673-7aec-7e15-8909-47876bd5dd2b · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:03:01.101410Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000000516 |
| Status | PUBLIC |
Content hashes
| Canonical text | 89bf68ac38c574895e81969a775f29d30ea84705c1aa674a117bc9b55c9ee75c |
|---|---|
| Markdown | ba13c6dcd45d98138ab8623f78a4e525e35dc5e6347612dd1e76fd7f67852948 |
| Publication page | 52f060e4f5c26faeca4767b6b7187c42f30620ad935dcbb19b7b0c9524b6d2c5 |
| Manifest | f40aa2d3c0c428f8a41cf2346c148792fc9cb2162519c5bb3cf01db17c12ef07 |
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 | 8yJGz5I6JtSh4av0Bh2l5ZFNh44NjYfOs3pVck2JU4h64brubq973sqyOoesv5RbpsWATHVao+9YN8bPQ2rGCg== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T19:07:03Z batch OT-TS-2026-W38-001 · RFC 3161 token · inclusion proof root 6369baadb1a246009d149835804d20ba... |
|---|
Independent retrieval
| 2026-10-26T20:42:04.694167Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000516observed 52f060e4f5c26faeca4767b6b7187c42...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-10-26T20:42:04.636970Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000516/manifest.jsonobserved f40aa2d3c0c428f8a41cf2346c148792...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-26T20:42:04.572467Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000516/publication.mdobserved ba13c6dcd45d98138ab8623f78a4e525...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-10-26T20:42:04.441840Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000516/publication.txtobserved 89bf68ac38c574895e81969a775f29d3...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-21T04:23:42.832714Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000516observed 52f060e4f5c26faeca4767b6b7187c42...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-21T04:23:42.817292Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000516/manifest.jsonobserved f40aa2d3c0c428f8a41cf2346c148792...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-21T04:23:42.803228Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000516/publication.mdobserved ba13c6dcd45d98138ab8623f78a4e525...fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139 |
| 2026-09-21T04:23:42.717987Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000000516/publication.txtobserved 89bf68ac38c574895e81969a775f29d3...fetched by instance-3.rotem.ai from 34.69.0.72, 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 |
|---|