{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the types of proposals in a blockchain?","a":"Block proposals: Blockchain nodes generate new blocks by solving mathematical problems and bundle transaction data into the blocks. This process requires a large amount of computing resources to ensure the security and consistency of  the blockchain network."}]}],"pr":"16f4186a2ddb81aa5181ecef8f3835e4c628417fe392420a14d8b79f2e019c14"}