The popularity of non-fungible tokens (NFTs) soared in 2021. Multimillion-dollar sales of the blockchain-based ownership certificates featured everything from an autographed tweet to virtual sneakers. Not everyone is impressed. The steep carbon footprint of the digital assets irks environmentalists; their opacity worries those combating money laundering and tax evasion.
2021年,非同质化代币(NFT)热度大增。这种基于区块链的所有权证明往往能卖出数百万美元,内容涵盖从签名推文到虚拟运动鞋的一切事物。不是所有人都趋之若鹜。这种数字资产厚重的碳足迹激怒了环保主义者;它们的不透明让打击洗钱和逃税的人感到担忧。
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