This is an adblock list to block browser based crypto mining. Currently few websites are on the list. If you see another website doing this deed, feel free to raise an issue or raise a PR.
Make sure you have an adblocker installed that uses Adblock Plus' list (uBlock or AdBlock Plus for example). Then import below link into your adblocker:
https://raw.githubusercontent.com/hoshsadiq/adblock-nocoin-list/master/nocoin.txt