{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the situations in a blockchain that can lead to failed signing of transaction batches?","a":"Network delay and congestion: In a blockchain network, if there is delay in communication between nodes or  network congestion, it may cause transactions to fail to complete signatures and verification within the specified time, thereby triggering the cutoff condition."}]}],"pr":"b7d9adfa1049199cf531dbfc4889872d3e1b2eeeff42d2ac59b1a7fbe1677a4a"}