consistent spelling of blockchain, focus on key points

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Christian Grothoff 2016-10-27 15:11:14 +02:00
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@ -188,13 +188,14 @@ transactions are recorded for eternity, which can enable
identification of users. In theory, this concern has been addressed identification of users. In theory, this concern has been addressed
with the Zerocoin extension to the protocol~\cite{miers2013zerocoin}. with the Zerocoin extension to the protocol~\cite{miers2013zerocoin}.
These protocols dispense with the need for a central, trusted The key contribution of blockchain-based protocols is that
authority, while providing a useful measure of pseudonymity. they dispense with the need for a central, trusted
authority.
Yet, there are several major irredeemable problems inherent in their designs: Yet, there are several major irredeemable problems inherent in their designs:
\begin{itemize} \begin{itemize}
\item The computational puzzles solved by Bitcoin nodes with the purpose \item The computational puzzles solved by Bitcoin nodes with the purpose
of securing the block chain consume a considerable amount of energy. of securing the blockchain consume a considerable amount of energy.
So Bitcoin is an environmentally irresponsible design. So Bitcoin is an environmentally irresponsible design.
\item Bitcoin transactions have pseduononymous recipients, making taxation \item Bitcoin transactions have pseduononymous recipients, making taxation
hard to systematically enforce. hard to systematically enforce.