连续五年亏损，累计亏损额逼近4亿元，又被税务部门通知补缴税款约2000万元——这是艾迪药业（688488.SH）在2026年1月底交出的一份并不算好看的成绩单。
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Generative AI Use. Generative AI was used for labeling participants’ responses, developing Javascript for the survey, drafting code for data cleaning and formatting figures, and copyediting select sections of the manuscript. The authors maintain full responsibility for the integrity of the final content. The level of AI involvement was consistent with tasks typically performed by a research assistant.
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Chaum’s idea was to break the linkage between the issuance and usage of a credential. This means that when Alice shows her credential to the website, all the site learns is that Alice has been given a valid credential. The site should not learn which issuance flow produced her the credential, which means it should not learn her exact ID; and this should hold even if the website colludes with (or literally is) the issuer of the credentials. The result is that, to the website, at least, Alice’s browsing can be unlinked from her identity. Imn other words, she can “hide” within the anonymity set of all users who obtained credentials.