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How to set a timer with solidity?

I'm writing a Defi project. What I want to do is to set an automatic payment. For example, when a lender asks to lend 10 eth, the money would be automaticly sent to him after a month. I have searched a lot but found nothing. Are there any possible remedy? THANKS!

Solution

  • I'm writing a Defi project. What I want to do is to set an automatic payment. For example, when a lender asks to lend 10 eth, the money would be automaticly sent to him after a month. I have searched a lot but found nothing.

    You don't. In Ethereum, transactions are always initiated by the user, or Externally Owned Accounts (EOAs).

    You program your smart contract in a way that after certain block.timestamp has passed the user can call claim() function that sends him any payment.