Below are the asset and cryptocurrency codes used in history export files. Asset codes starting with 'X' represent cryptocurrencies /...
source https://www.google.com/url?rct=j&sa=t&url=https://support.kraken.com/hc/en-us/articles/360001185506-How-to-interpret-asset-codes&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNHjcGAV3bBlT6Q-U28ZZ3g72rQU5w
