Parametric trigger API signed, dispute-proof.
A neutral, signed answer to the question every parametric payout turns on: was the trigger really hit, at that place, at that time — provably. Each receipt pins the methodology, the source reading and a reproducible hash, then signs the lot.
The call
Keyless. The receipt carries a pinned methodology hash, a re-fetchable source URL and a reproducible reading hash — verify everything yourself.
# a live signed trigger receipt — wind over 120 km/h near Townsville?
curl "https://dynamicfeed.ai/v1/trigger-receipt?metric=wind_kmh&op=gte&threshold=120&lat=-19.26&lon=146.82"Sample response
{ "schema": "trigger-receipt/v1", "peril": "weather",
"trigger_definition": { "metric": "wind_kmh", "operator": "gte", "threshold": 120,
"methodology_hash": "sha256:…" },
"observation": { "measured_value": 38.2, "source_url": "https://api.open-meteo.com/…",
"raw_reading_hash": "sha256:…" },
"determination": { "triggered": false, "payout_factor": 0.0 },
"signature": { "alg": "Ed25519", "key_id": "df-ed25519-…" } }Why live data
Parametric covers pay on a measured trigger — and every payout (or declined claim) is a potential dispute about whether the number was real. A neutral third party that signs the reading, pins the methodology and makes the hash reproducible turns that argument into a 30-second verification.
Use it for
- Parametric insurers, MGAs and brokers
- Reinsurance audit trails
- Weather-certificate settlement evidence
- Any contract that settles on a measured threshold
FAQ
What does it attest?
That the cited official source reported a reading at a time, and what the pinned methodology implies — not ground-truth physical loss.
Can anyone verify a receipt?
Yes — the Ed25519 signature checks against /.well-known/keys, the source URL is re-fetchable, and the reading hash is reproducible with the recipe in the receipt.
Is it anchored?
Optionally — POST /v1/anchor timestamps a receipt's hash on Bitcoin for independent proof of when.
Who are you in the value chain?
The data + verification supplier — neutral; we underwrite nothing and we're not a calculation agent.