{"p": "can-20", "op": "mint", "tick": "can", "amt": "1000", "rows": [{"df": "qa", "content": [{"q": "How are PoW mining rules defined in a blockchain?", "a": "Block generation: PoW miners compete to solve complex mathematical problems to generate new blocks. The miner who  solves the problem first will get the block reward."}]}]}