{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied in the field of climate change?","a":"Carbon Emission Allowance Trading: Blockchain technology can be applied to the  carbon emission allowance trading market, realizing the allocation and transaction of carbon emission allowances through smart contracts. This helps to improve transaction efficiency, reduce transaction costs, and ensure the fair and just allocation of carbon emission allowances."}]}],"pr":"28cbd5c716c0180804ee390d739f412280f7ec94f23e6586da13db4ee5b98012"}