I would like to know what GAS the ERC20 tokens should use, like when I send OMG transaction, should I use OMG as the Gas or Ethereum as GAS?
I don't want to use ETH, so I am figuring out whether I can use the same token (i.e., OMG or other erc20 tokens) itself to sign the transaction.
Can you advise, please?
Gas is a unit of work. Fees are paid in the form of gas * gasprice
, and the result of that calculation must be paid from the ETH balance of the account that initiates the transaction.
There is no way to pay for tx fees in tokens.