295 \begin{bubble}[10cm]\addtolength{\leftmargini}{5mm}

   295 \begin{bubble}[10cm]\addtolength{\leftmargini}{5mm}

   296 \begin{itemize}

   296 \begin{itemize}

   297 \item I , Alice, am giving Bob one infocoin, with serial

   297 \item I , Alice, am giving Bob one infocoin, with serial

   298       number 1234567.

   298       number 1234567.

   299 \item I, Alice, am giving \alt<2->{\alert{Alice}}{Charlie} 

   299 \item I, Alice, am giving \alt<2->{\alert{Alice}}{Charlie} 

   301 \end{itemize}

   301 \end{itemize}

   302 \end{bubble}\bigskip

   302 \end{bubble}\bigskip

   303 

   303 

   304 How should other people update their blockchain (public

   304 How should other people update their blockchain (public

   305 register)?\pause

   305 register)?\pause

   372 \alert{salt} so the hash starts with a long run of 

   372 \alert{salt} so the hash starts with a long run of 

   373 zeros?\bigskip

   373 zeros?\bigskip

   374 

   374 

   375 \begin{bubble}[10cm]

   375 \begin{bubble}[10cm]

   376 \begin{tabular}{l}

   376 \begin{tabular}{l}

   378 \;\;\scriptsize\code{1312af178c253f84028d480a6adc1e25e81caa44c749ec81976192e2ec934c64}\\

   378 \;\;\scriptsize\code{1312af178c253f84028d480a6adc1e25e81caa44c749ec81976192e2ec934c64}\\

   379 \pause

   379 \pause

   381 \;\;\scriptsize\code{e9afc424b79e4f6ab42d99c81156d3a17228d6e1eef4139be78e948a9332a7d8}\\

   381 \;\;\scriptsize\code{e9afc424b79e4f6ab42d99c81156d3a17228d6e1eef4139be78e948a9332a7d8}\\

   382 \pause

   382 \pause

   383 \ldots\\

   383 \ldots\\

   385 \;\;\scriptsize\code{0000c3af42fc31103f1fdc0151fa747ff87349a4714df7cc52ea464e12dcd4e9}

   385 \;\;\scriptsize\code{0000c3af42fc31103f1fdc0151fa747ff87349a4714df7cc52ea464e12dcd4e9}

   386 \end{tabular}

   386 \end{tabular}

   387 \end{bubble}

   387 \end{bubble}

   388 

   388 

   389 \end{frame}

   389 \end{frame}