From observation to verified receipt.
Five stages, one honest chain. Everything below uses the published, sanitised conformance fixtures — demonstration data with public test keys, never presented as live. The live signed feeds are one click away throughout.
The chain.
Something happens in the world
A satellite reads space weather. An agency publishes an exploited-vulnerability entry. A severe-weather alert goes out. Dynamic Feed's sanitised gold fixtures preserve three such observations exactly as envelopes carry them: NOAA space weather, CISA KEV, NWS severe weather.
Sanitised demonstration fixtures — not current live observations
The observation carries its own paperwork
Every envelope records the source, its URL and licence, the observation time, and a freshness state: live, stale, or unavailable — never a fabricated reading. Cross-source concordance says whether independent witnesses agree, diverge, or only one responded.
"provenance": { "source": "…", "licence": "…", "observed_at": "…" },
"freshness": { "state": "live | stale | unavailable", "age_seconds": … }
An automated system consumes it and acts
An agent approves, escalates, defers or routes, using those observations at a specific moment. The decision inherits everything above: which sources, how fresh, what agreed and what did not.
What it relied on is preserved
The inputs, their provenance and freshness, the checks that ran, and the verdict are sealed into a signed, timestamped record. Any later change to a single byte breaks the signature — tamper-evident, and honest about what it does not prove: a valid signature never claims objective truth, completeness or safety.
Anyone re-checks it, without trusting us
The receipt verifies in your own browser: schema, canonical bytes, digest, signature, key lifecycle, evidence linkage — each check shown separately, never collapsed into one green tick. Try it now: load a fixture on /verify, then change one value in the tamper laboratory and watch exactly which check breaks.
Conformance verification uses public test keys — no production trust implied
Follow the chain yourself.
Explore a Decision Evidence Graph · verify a receipt · agent decisions · vulnerability decisions · vendor due diligence · weather-dependent operations · bring us one AI decision.