Weather delay, says who?
Delay-compensation fights, EU261 in Europe and DOT refund rules in the US, turn on the cause: carriers cite weather or air-traffic constraints as extraordinary circumstances, and passengers and claims platforms have no independent record of what the airport was actually doing at that moment. Dynamic Feed issues a signed, independently re-verifiable receipt of the airport's live state: the FAA national airspace status (ground stops, ground-delay programs, closures) plus the observed weather from named public sources. Minted at disruption time and retained in the signed archive, it is corroboration either side can check.
The airport's state, signed while it happens.
Enter an airport code. Dynamic Feed records the live FAA airspace status for that airport and the observed weather, and returns one Ed25519-signed Decision Receipt produced by /v1/answer. Nothing is mocked and nothing is stored about you.
full signed receipt (JSON)
The cause is claimed. The record is missing.
When a carrier writes "cancelled due to weather", the claim is checked months later against the carrier's own account of events. A ground stop that never existed cannot be disproved from memory, and one that did exist cannot be proved from a boarding pass. A receipt minted at disruption time carries what the FAA airspace status and the named weather sources reported at that exact moment, signed so it can be re-verified years later against a published key. It pairs naturally with the forecast record: what the forecast said that morning, next to what the airport actually did that afternoon. Our records work against us just as well as they work for you: anyone can re-check them, including the carrier.
A record of the airport's state, not a verdict on your claim.
Dynamic Feed is a neutral witness, not an adjudicator. This receipt is a record of what named public sources reported, not a determination of compensation eligibility or of the carrier's actual delay cause. The FAA layer covers US airports only, and an empty list means no FAA-level program was active, not that the flight was on time. The airline's own operational records remain the primary evidence. Advisory evidence, tamper-evident not tamper-proof, zero personal data, and not legal advice.
Every disrupted flight, with the airport's state on record.
One API call per disrupted flight mints a signed receipt of the airspace status and weather at that moment, keyless to try, self-serve to scale.