{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is the ownership and permission management of programs in a blockchain ecosystem managed?","a":"Code ownership: The source code of a smart contract is usually completely  controlled by the developer, including writing, modifying, and maintaining the code. On some blockchain platforms, such as Ethereum, the source code of the smart contract is open and transparent."}]}],"pr":"476fb5bde2484c35b3440483b8e71006d8dcfe39aa0c3d1d3b3aea25e0e75220"}