{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is the system adaptation directory set in the blockchain?","a":"Block:  The basic unit of blockchain, containing a certain amount of data and information. The hash value of the previous block is saved in the block, connecting all blocks in chronological order."}]}],"pr":"9b1e295a01a868cbb0cf30d46d4118415bbfffae2db8f611cb72a895c4bdd8c9"}