{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is multi-signature implemented in blockchain?","a":"Each  participant has a unique private key for generating their own signature. Additionally, there is a public shared key for verifying signatures."}]}],"pr":"25b3eed86db1a7b9c7ba5692203f7c0e67befd299b8992941f4ce4360c483031"}