{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology ensure the irreversibility of transactions?","a":"Decentralization: Blockchain adopts  a decentralized network architecture, without central nodes, and all nodes have equal status. Each node stores a complete copy of the ledger, and any modification of a transaction requires consensus from all nodes. Therefore, no one can tamper with the data in the blockchain alone."}]}],"pr":"79bd9d8bc60aac5538976d9000bcf5d8364cb201e7c980d42d70d2309b38986d"}