{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"In a transaction, what is the role of a digital signature?","a":"Non-repudiation:  Digital signatures make it difficult for both parties in a transaction to deny the signed documents. In case of disputes, the signed document can be used as evidence to prove the authenticity of the transaction."}]}],"pr":"6f3f184481ea7ec4e401a389bb87c6b5aebb17c3fae38a6b6bc3e361eb5c8f35"}