{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do users query the height of an upgrade that has been applied to the blockchain?","a":"Choose a blockchain platform, such as Ethereum, Bitcoin, etc.↵2. Visit the official website of the blockchain platform or query the API interface.↵3. Look for information about  the upgrade on the official website, usually in sections such as"}]}],"pr":"7d4e6c420b1b90e0e4b2e5c845cc29b4bb1a0495d9547497620292c0205567a2"}