OT-2026-000002908
Publication integrity record
Collapsible protrusions having a variable coefficient of friction
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-2026-000002908) never changes.
Identity and time
| Publication number | OT-2026-000002908 · never reused |
|---|---|
| Internal UUID | 01a0a67f-71cd-7fc8-9eed-03ec4594f133 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:16:05.197529Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000002908 |
| Status | PUBLIC |
Content hashes
| Canonical text | 465d701d389d57772dcf4a53ceccfb2d4b1879590766adb7543c44ebb28f8100 |
|---|---|
| Markdown | cf167d8ebac02abbb072d3a7019e783411107ef25effd48862f33ba27e3d75a3 |
| Publication page | 4cf8e680c81dd60e9aa60d9708aecba835f6c4134644c979225d12eb1783d39e |
| Manifest | fdd5eabfbf7310aae445d2d2cf2a5afefbd3c96376e3d959cdacc3348a0f78ae |
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 | jTjae3zoR/bIL9u+GQpqqYyCagvpa2mgLqHfhZ9ZOVG0KWq/xa6Ta9wGYjIVc/PXuaThLnVLsg+iN3CI2hrsCg== |
| 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
| 2026-09-16T04:41:26.582120Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002908observed 4cf8e680c81dd60e9aa60d9708aecba8...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-16T04:41:26.382927Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002908/manifest.jsonobserved fdd5eabfbf7310aae445d2d2cf2a5afe...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T04:41:26.083913Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002908/publication.mdobserved cf167d8ebac02abbb072d3a7019e7834...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-16T04:41:25.859105Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002908/publication.txtobserved 465d701d389d57772dcf4a53ceccfb2d...fetched by grabo-systems from 34.44.131.203, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:20:20.548484Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002908observed 4cf8e680c81dd60e9aa60d9708aecba8...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:20:20.516485Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002908/manifest.jsonobserved fdd5eabfbf7310aae445d2d2cf2a5afe...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:20:20.500945Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002908/publication.txtobserved 465d701d389d57772dcf4a53ceccfb2d...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 |
|---|