{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the different forms of public key authorization for withdrawing funds in a blockchain?","a":"Multi-signature: This form allows the withdrawal to be authorized by the collaboration of multiple private keys. This method can enhance security  because the withdrawal requires consent from multiple participants. Multi-signature schemes can be divided into class-based multi-signature and multi-class multi-signature, suitable for different application scenarios."}]}],"pr":"242a225046e883fe6e5c1ede3e94f60b6bdbf322b6e04e3b75a63e6a20db572f"}