{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is metadata stored and managed in the blockchain?","a":"Blockchain adopts distributed ledger technology, storing data and  metadata on multiple nodes, achieving decentralized data storage and management. Each node saves complete copies of data and metadata, ensuring the security and reliability of the data."}]}],"pr":"42aa58d9bc3a07aeba21ad483d6f0fc0581b43ccbbc819bbfaf3b8aed6cfb942"}