Graph-wide evidence registry

20 sources, in one place.

Title
Frankfurter APIhttps://api.frankfurter.app
ExchangeRate-API USD reference rates — 2026-09-18https://open.er-api.com/v6/latest/USD
ISO 12812-1:2017https://www.iso.org/standard/59844.html
ECB — Euro foreign exchange reference rate, 28 August 2026https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/index.en.html