“As an additional firewall, a new key pair should be used for each transaction to keep them from being linked to a common . Some linking is still unavoidable with multi-input , which necessarily reveal that their inputs were owned by the same owner. The risk is that if the owner of a key is revealed, linking could reveal other that belonged to the same owner.” So I read this in Bitcoin white paper and I got a question, is it possible that someone uses a new key for every transaction but someone else can out that those to one person (not necessarily know sender’s identity but just to know that those are sent by one person). And if yes how someone can that out (and if no one can that out, is there any way for the owner reveal all his/her transactions or keys whithout revealing his/her identity?

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