{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do I calculate the cost of creating a tree on the blockchain in JavaScript?","a":"First, understand the structure and principle of the blockchain. The blockchain is a decentralized database composed of multiple blocks, each containing a certain number of transaction records. When a new block is added to the blockchain, it needs to undergo a certain verification  and confirmation process."}]}],"pr":"f84a50994a5c87d3ad33959a005bb5c1df7c801eaa24102b6454ebf9ddc532f1"}