As a website owner for cryptocurrency services or anything that discusses cryptocurrency, I strongly recommend using the CryptoWP plugin.
source https://www.google.com/url?rct=j&sa=t&url=https://wordpress.org/support/topic/the-best-plugin-for-displaying-cryptocurrency-prices/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNFVIw59q3m3cJd_v8ybz58Wz_0QAA
