{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do you verify the signature of an off-chain message in a blockchain?","a":"Obtain the public key  of the signer. In a blockchain network, each participant usually has a public key for generating signatures. You can obtain the public key from the signer's wallet address or other reliable sources."}]}],"pr":"32257542a782c5fe1d48617d45c10a136bb6e4c0ed3fa9fe44ff1dafc45156c3"}