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Is there a way to make transactions costless on a private Ethereum network?

I am already limiting who can interact with the deployed smart contracts and who is a member of the network with code. I would like to add new members to the network that aren't prefunded in the genesis.json file; so I figure why not just make transactions free since there is no chance of malicious activity in the consortium.

marked as duplicate by Richard Horrocks, Ismael, shane, flygoing, TC8 Mar 14 at 9:49

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