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Transaction Fee

Gas refers to the transaction fee that will be charged to any transaction or execution on the Smart Contract in KardiaChain network. Gas is measured in HYDRO.
1KAI = 10^18 HYDRO
1 OXY = 10^9 HYDRO = 0.000000001 KAI
A transaction fee will be calculated by the following formula:
gasFee = gasPrice * gasLimit
The minimum gasPrice is 1 OXY (or 1000000000 HYDRO)
The minimum gasLimit is 29000 and the maximum gasLimit is 20000000
A typical transaction gas limit for sending KAI on the network is 29000
1000000000 * 29000 = 29000000000000 HYDRO = 0,000029 KAI
A smart contract operation or any transaction on KardiaChain network will cost gas for computing the logic in KVM.
  • It costs zero fee to read data from a smart contract.
  • Gas will return to users if a smart contract execution does not spend all the gas fee.
  • If the transaction is processed but not enough gas to pay, it will be dropped (failed) and gas won't be returned.