{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to query the balance in a blockchain?","a":"To query the balance in a blockchain, you can achieve this by calling the Bitcoin API interface. First, you need to choose a Bitcoin API provider, such as Tokenview, Blockchain, Coinbase, etc. Taking Tokenview as an example, first register an account on the Tokenview website, log in, and go to the API management page to obtain the API  Key and the link to the API documentation. Then, according to the instructions in the API documentation, call the corresponding API interface to query the balance of a Bitcoin address. For example, you can use the following sample code to query the Bitcoin balance:\n\n```python\nimport requests\n\napi_key ="}]}],"pr":"260a40622625a1cbcc5a458f3fd8049f208864c7e1901a00c55e768b8b265a54"}