{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to upgrade a blockchain node?","a":"Conduct voting: Nodes in the blockchain network vote on the upgrade proposals, and the voting results determine whether to proceed with the upgrade. Voting can be completed through consensus algorithms such as Proof of Work (PoW)  or Proof of Stake (PoS)."}]}],"pr":"1ba649e3ec2e2026db4cc3fa0c0b3604c3f6e4139c0cbad130d2b163e5a000c1"}