{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can the problem of static read-write or global variables be addressed in a blockchain?","a":"Adopting distributed ledger technology: The data storage in blockchain systems is achieved through distributed ledgers, with each node saving the complete ledger data. When updating data is required,  nodes confirm and validate the update request according to a certain consensus algorithm to ensure the consistency and accuracy of the data."}]}],"pr":"d0fd02209a16199ab5d65d5cfaf3d32f0c87783eec5ba451b264bb849acf1bf8"}