{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the expansion issues of blockchain?","a":"Scalability: As the development of  the blockchain ecosystem, more and more applications and users join, putting higher demands on the transaction volume and processing capabilities of the blockchain network. However, existing blockchains have limitations in scalability, making it difficult to cope with the needs of large-scale growth."}]}],"pr":"f191bff7db60a6bc2893a08292de98b37381cacd16a88f693b0a5c8202402431"}