How can we earn bitcoins and ETH on tor browser and if there is free alt why please share it also. But no illegal thing.
hmm you could run a bitcoin mixer that kinda grey area due

You will need a big amount of money to create a mixer, then you will need to convince people you are not going to steal their money and finally Im not sure it is a gray area anymore, with the recent take downs of dark net markets one of the charges against them is the mixing of coins described as money laundering.