{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Why do we need to check the UTXO information before sending a transaction in a blockchain?","a":"Prevent double spending: Bitcoin uses a distributed ledger technology, and transaction information is publicly transparent across the entire network.  By checking UTXO, the sender can ensure that the input Bitcoin of the transaction has not been spent elsewhere, preventing double spending."}]}],"pr":"9863798c5a3efb5e7c68edf99d4a66880eaf8b4cd4e73818fc73d7078336be9b"}