{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to use the public API interfaces of a blockchain?","a":"Register and obtain API keys: According to the documentation requirements, register an account on the blockchain platform or third-party API service provider and obtain API keys  or access tokens."}]}],"pr":"1e49149922848eb2039fda826f5602546412f3109e476bde7f1db6b2d1154204"}