ANKR mining does not exist. But you can stake a blockchain — as in, provide collateral to help secure it — through Ankr Earn, to earn rewards. The upside of ANKR staking is that, unlike other staking in which you cannot sell or access your staked holdings throughout the process, Ankr Earn gives you the equivalent of the amount you staked back in the form of its Liquid Staking tokens, which you can then use to effectively stake the same amount elsewhere at the same time.