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As I understand the smart contract is triggered by some action and executes another action based on input.
If I want to send the amount of coin to the target address in case of some action so, the smart contract is involved.

  • External action will find a smart contract address in the blockchain.
  • Smart Contract will execute by the compiler.

My question is if I develop a smart contract to send some money to some address in a certain case how these transactions will be validated by miners? Because since it is an automatic process signing transaction message by private key is not possible, since the private keys need to keep in a safe zone (device, hardware, etc.)

And does miner node put its signature for each execution scenario?

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A smart contract cannot initiate a transaction by itself. It always needs to be initialized by an Externally Owned Address, (who has a private key) and miners verify the signature.

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  • Then how contract account transfer ether to another account ? is it not a transaction? And not required signature?
    – aze2201
    Feb 5, 2022 at 22:42
  • It is part of the transaction that was initiated by the user. If you check tx.origin at any point in the transaction, it'll be the externally owned address
    – pbsh
    Feb 6, 2022 at 4:08

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