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I try to build an app where users can send and receive ERC20 tokens.

I want the transactions for my user to be feeless.

So is it possible for a user to create and sign the transactions, my system collects these transactions and submit them to the network and pays their Ethereum fees?

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Yes! This pattern of transactions is called metatransactions.

As you described, your user would sign the transaction, but you would send the transaction to the network via a metatransaction.

There are a number of different ways to implement it. The Gas Station Network (GSN) by OpenZeppelin provides this as a service and is worth considering for your use.

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  • this GSN is quite abstracted and multi-purpose.i really need the minimum. e.g. the user creates and signs a transaction gives this transaction to me i broadcast the tx and pay the gas how would i go about this with minimum tools?
    – Mark Walser
    Commented Nov 18, 2019 at 4:13

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