{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure the immutability of transaction data?","a":"Decentralization: There is no central node in the blockchain network,  where all nodes are equal and each node has a complete copy of the ledger. This means that any modification requires consensus from all nodes, so no single person can modify the data in the blockchain alone."}]}],"pr":"491f2f0181c579665627ecef39fb9e5a12d90ca21e47f419669e3359f4a8e1fe"}