{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are test networks in blockchain?","a":"The test network in blockchain is  a distributed database that simulates the official blockchain network environment, used for testing and validating new blockchain technologies and applications. Test networks have a similar structure and rules to official blockchain networks, but the cryptocurrencies usually used have no real value, allowing experiments to be conducted without causing actual losses. Test networks help developers better understand the operational principles of blockchain technology and optimize and improve their applications. Common test networks include Bitcoin's test network (Testnet) and Ethereum's test network (Ropsten)."}]}],"pr":"8dafd45a04e25b6e8e3b056f48def8c038c63d53a958d44ab35f25f3bdeab339"}