{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do multi-signature schemes in blockchain achieve consensus among specific validators?","a":"Then, A sends the digital signature to B and C, simultaneously providing them with their own public keys. B and C  use A's public key to verify the digital signature."}]}],"pr":"6e9cc258d87e749d7ed82a358271e71de646a4141710b6d146cf4174f31073f1"}