{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do you use the historical information query command in a blockchain?","a":"Query the  height, summary, transaction list, and other information of a specific block:↵↵  ```↵  https://blockchain.info/block/<block height or hash>↵  ```↵↵  Replace `<block height or hash>` with the appropriate value."}]}],"pr":"c6b816919242d3a71600ef03237d7fdfa0d19993e93fa0a0e23dd489e608de1d"}