We are using CoinGecko.com free API to grab maximum data in this plugin. Instead of this we are also using coincap.io API for live price updates and coinexchangeprice.com API to optimize data provided by coingecko API.
*Remember all data comes from thrid party APIs so we can not provide any guarantee for data accuracy, we are providing data as we are receiving from API providers. Currently CoinGecko.com is only the best free resource of crypto data API so we are using it.