There is an exchanger, during registration, unique eth addresses are created for each user, I store private keys on the server, how to make sure that if users deposit erc20 tokens to their addresses, then these tokens are sent to my single address. As I understand it, there should be a little eth on each of the user addresses to cover the transaction costs, but I do not understand how this can be implemented. Thank you in advance!
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Are you on private blockchain? Geth or Parity? – Zulhilmi Zainudin Dec 9 '19 at 3:25
