How does a dapp know if it is the owner of a smart contract

Solidity Programming
#1

Does a dapp know that it is the owner of a smart contract by

  • The fact that it was deployed at the time the dapp was initialized?
  • The contract address is hard coded in the dapp?
  • The private key is stored in the dapp ?
  • Or signature?

Because I want to use a smart contract to send etc-20 tokens to users from the dapp, I don’t want to have to sign every time a user is to receive coins .

There must be some way that the dapp knows it is ok to call an owner function of a smart contract. without signing each time I want to do a transfer ?

#2

These are generally called the “Approval” functions on the smart contract. Similarly to what Dexes do by asking your approval for making a trade on a new token in your wallet.

You can research more through this -
https://medium.com/ethex-market/erc20-approve-allow-explained-88d6de921ce9

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#3

that helps. But what about if you want to have a second contract that disperses funds in a certain fashion or rather tokens . I get that the deploy script is the time to approve and mint tokens to the second contract, however the part I am fuzzy on , is if the smart contract is already approved, can it just transfer tokens < I think so , but how does the dapp know it’s the owner of the smart contract making the transfer calls? Some place in the dapp to hold the signature or private key ? or ???

#4

there will be two transactions, one that makes the approve and another one that will call a smart contract function and that smart contract function will be able to make that transfer if it was approved to do it.

#5

We may not be able to explain it on a forum that succinctly as it requires a little digging on how contracts work. A great place to start is learning how uniswap works behind the scenes at the contract level.

Perhaps this can help -

#6

thanks that did help a lot

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