{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to query the token balance of a user in a blockchain?","a":"Choose a mainstream blockchain platform, such as Ethereum, Bitcoin, etc.\n2. Find the corresponding  smart contract or token contract address for the platform. This can be obtained by consulting relevant documentation or asking the project team.\n3. Use a blockchain browser (such as MetaMask for Ethereum, Etherscan, etc.) to query the function interfaces of the contract and understand how to query token balances.\n4. According to the function interfaces found, write corresponding program code or use existing libraries."}]}],"pr":"9cec25f2d03fd241f5d614b415cc1cf406ea08873decc820c07f10452af58fa4"}