{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do long-range attacks in blockchain affect the collateral behavior of validators?","a":"Reducing attack costs: In the proof-of-stake (PoS) consensus mechanism, attackers can purchase keys that have previously been used to create blocks at a cost far lower than the tokens staked  during block creation. Since PoS does not have a mandatory delay between blocks, attackers can create a fake chain longer than the main chain within a few minutes after buying the keys, and it will be accepted by the fork selection rules. This enables attackers to carry out attacks on the blockchain network at a lower cost."}]}],"pr":"177067954cf7f1d78b26d5ff1e5a1fa441ce1fc9787a3466b36de7e67a71ea8e"}