{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is the expiration time of block hash verified?","a":"Block creation: When a new block is created, miners need to solve a complex Proof  of Work problem to prove that they have invested enough computational power. In the Bitcoin network, this problem involves finding a hash value that meets specific conditions."}]}],"pr":"c497e2384841bb3684dcb3aebf0a03e31cceb079ee8496e6fe6e9fe1177db2c9"}