{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the purpose of transaction confirmation levels in blockchain?","a":"Preventing double spending: Blockchain ensures that a transaction cannot be tampered with or reversed after it has been  confirmed by the network. When a transaction is included in a certain block in the blockchain and has undergone a certain number of block confirmations, it becomes difficult for other miners to tamper with the block, thereby avoiding the issue of double spending."}]}],"pr":"4ab850c9d05f0d3a177efefddaaecfc534bba4505adc1e1821c773e19627e18e"}