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In Ethereum yellowpaper the gas cost to create a contract is equal 32000. But what is the cost to validate and keep the contract operating until it is executed?

Edit:

Imagine the following situation: I want to transfer an amount of ether from wallet X to wallet Y. I will use a smart contract to do the validation of the transfer. By my understanding the cost would be:

32 000 gas to create a new contract; After the contract was validated, 21000 gas would be added to the cost of the contract because the transaction would be validated.

My questions are: is this analogy correct?

Anything I do in the Ethereum blockchain can be considered a transaction? (If I just want to store a value in the blockchain (i.e. 256 bit value has a cost of 20 000 gas) I would have to pay the gas for store the value and also the gas cost of a transaction?

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  • "I would have to pay the gas for store the value and also the gas cost of a transaction?" The cost of the transaction would include the cost of storing the bytes. (There's no cost for anything other than a transaction, but a transaction's cost can vary depending on what it does.)
    – user19510
    Nov 1, 2018 at 21:33
  • Understood, so basically the total cost should be 20000(storage)+21000(transaction) = 41 000 gas. Correct?
    – Mutante
    Nov 1, 2018 at 21:41
  • Yes. (A bit more due to other instructions being executed, the cost of the data being sent, etc.)
    – user19510
    Nov 1, 2018 at 21:42

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I'm not 100% sure I understand the question, but I think the answer is 0. Gas is only paid when you make a transaction. Deploying (creating) a contract is a transaction, and then calling a function in that contract is a transaction, but in between there are no transactions and thus no gas paid.

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  • Thanks for the answer. I eddited my question to better detail my doubt.
    – Mutante
    Nov 1, 2018 at 21:12

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