Jack Dorsey just halved the size of Block’s employee base — and he says your company is next
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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.
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哈梅内伊的遇害，标志着伊朗伊斯兰共和国进入自1989年以来最剧烈的权力振荡期。作为在位37年的最高领袖，哈梅内伊通过非对称的制衡手段，在神职人员、伊斯兰革命卫队（IRGC）与技术官僚之间维持了长期的脆弱平衡。此次因美以联合军事行动引发的权力真空，不仅是单一领导人的更替，更是对伊朗1979年革命以来建立的“法学家治国”体制的一次根本性冲击。