{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How are transactions unlocked in blockchain?","a":"User A wants to send Bitcoin to User B. First,  User A needs to encrypt the transaction information using User B's public key."}]}],"pr":"48ab9bdf15d033e90efc662ca05af3d4df47699685262d5f7056a1fb95a44046"}