Confusion over the price history retrieving data from solana blockchain

I’m very confuzing with this one:
https://event-history-api-candles.herokuapp.com/tv/history?symbol=SOL/USDC&resolution=60&from=1651708800&to=1653377609”.
Is this an url for retrieving market price history from solana blockchain from mainnet cluster or devnet?
I’m trying to get them for building the candles. If is not, what is it?
Thanks for your time!

This question is more appropriate for the discord support channel: http://discord.gg/mangomarkets