{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology achieve traceable and verifiable transaction history?","a":"Distributed ledger: Blockchain technology employs the principle of a distributed ledger, with each node storing complete transaction records. When a transaction occurs, the blockchain broadcasts the new transaction data to  the entire network. After verifying the authenticity of the transaction, the nodes incorporate the transaction into their local ledgers."}]}],"pr":"57cfe5b8e617fa7c6619ff75d47689141507be530556f96d572b27a43a1e833c"}