{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to set permissions during the storage of code and deployment of contracts in blockchain?","a":"Authentication: To ensure the security of the contract, authentication mechanisms such as private keys and digital signatures are used to  verify the identity of the participants interacting with the contract."}]}],"pr":"eb481b33ff3f87c44d0b39c55d05987d5ba11bd8a334e1ed32983f9f8f71b090"}