{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do you calculate the cost of a tree in a blockchain?","a":"Data storage cost: The data storage cost in blockchain includes the generation, verification, and storage of  blocks. Each block contains a certain amount of data, such as transaction records, account information, etc. As the blockchain continues to grow, the storage cost will also increase accordingly."}]}],"pr":"73e3a2d5d660ed79d23b170796acd3d6230bfd5c85f0230cc56790f6f3e99998"}