6) How to validate the authencity of an NFT?When you purchase a stock in NFT, that purchase is recorded on the blockchain—the bitcoin ledger of transactions—and that entry acts as your proof of ownership.
（一）故意散布谣言，谎报险情、疫情、灾情、警情或者以其他方法故意扰乱公共秩序的；
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// 第一步：倒序遍历nums2，用单调栈计算每个元素的下一个更大值