{"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":"44fe7bb6112fbe2dcf4266187285d00feb340e1896c087cce12dfc5fff326f5c"}