When a client asks for the time, it sends a random nonce. The server replies with a signed certificate containing both the nonce and a timestamp, proving the response happened after the request. Responses can be chained together with provable ordering; if any server’s timestamps are inconsistent with that ordering, that server is cryptographically “outed” as unreliable.
Less than: Every domino half in this space must add up to less than the number.
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Угрозу применения ядерного оружия в конфликте вокруг Ирана оценили14:57