This is a quote from the book "Bitcoin: A Peer-to-Peer Electronic Cash System" by Satoshi Nakamoto
... of information released by stock exchanges, where the time and size of individual trades, the "tape", is made public, but without telling who the parties were.

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As an additional firewall, a new key pair should be used for each transaction to keep them from being linked
to a common owner. Some linking is still unavoidable with multi-input transactions, which necessarily reveal that their inputs were owned by the same owner. The risk is that if the owner of a ke...
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