{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to revoke a blockchain upgrade proposal?","a":"During the  review stage, if the reviewers find problems with the proposal, they can refuse to approve it. At this time, the initiator can either modify the proposal to address the issues or withdraw it and submit a new proposal."}]}],"pr":"a54bbfa28d517686188219ef62c12939e77befe20b2025c7a675d058cdd679a2"}