{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to prevent replay attacks on blockchain?","a":"Implementing replay protection mechanisms: When conducting blockchain hard forks or network upgrades, introduce corresponding protection measures.  This includes performing uniqueness verification on transactions to ensure that the same transaction will not occur repeatedly on multiple chains."}]}],"pr":"f441673efb5f9bcffc81c9248e7df9d363d0d9b958992bc4aa42e6e157c3d9d7"}