{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do multi-signature schemes in blockchains ensure the traceability of transactions?","a":"Cryptographic protection: The multi-signature scheme in blockchain uses cryptographic technologies, such as digital signatures and public key encryption, to ensure  the security and authenticity of transactions. Digital signatures can verify the integrity (completeness and accuracy) and origin of digital content."}]}],"pr":"7cee2bfe1cee990251bcff34a14e22e49ff3e3e68e8679a4672266f7fa6a7b71"}