{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the off-chain expansion techniques in blockchain?","a":"Interoperability: Interoperability technology aims to facilitate the circulation and interaction of data, assets, and applications between different blockchain systems. Through interoperability technology, different  blockchain systems can recognize and exchange data with each other, thus achieving synergistic effects between chains."}]}],"pr":"b0b3ad2542eed79b1b66eebfd1bd0e6f34caca3091e02933856bb8a9b5212c0f"}