Preev saves price data to the chain
In short: Preev.pro is a currency converter and historical price data aggregator.
It's useful if you'd like to easily see how much 1 BSV (Bitcoin SV) costs in US Dollars (USD). There are other trading pairs besides BSV-USD, such as Bitcoin Core (BTC) against US Dollars, and Euros (EUR).
Price data is stored on the BSV blockchain. It cannot be manipulated afterwards, so the data is fancily put "immutable". 😊
Preev.pro has an API for developers. It outputs JSON. API can be queried to present price data, price data sources and other related details. There's a limitation though: API shows only prices for the last 24 hours.
More: https://preev.pro
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