slides/slides08.tex
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    67 
    67 
    68 {\bf About Bitcoins:}
    68 {\bf About Bitcoins:}
    69 
    69 
    70 \begin{textblock}{2.5}(11.5,10)
    70 \begin{textblock}{2.5}(11.5,10)
    71 \begin{bubble}[2.5cm]
    71 \begin{bubble}[2.5cm]
    72 \it anonymous? 
    72   \it bitcoins cannot get lost,
       
    73   all transactions are recorded
    73 \end{bubble}
    74 \end{bubble}
    74 \end{textblock}
    75 \end{textblock}
    75 
    76 
    76 \begin{textblock}{5}(3.5,4)
    77 \begin{textblock}{5}(3.5,4)
    77 \begin{bubble}[5cm]
    78 \begin{bubble}[5cm]
    78 \it cannot be controlled by the government?
    79 \it not regulated by any government
    79 \end{bubble}
    80 \end{bubble}
    80 \end{textblock}
    81 \end{textblock}
    81 
    82 
    82 \begin{textblock}{4}(2,9)
    83 \begin{textblock}{4}(2,9)
    83 \begin{bubble}[4cm]
    84 \begin{bubble}[4cm]
    85 \end{bubble}
    86 \end{bubble}
    86 \end{textblock}
    87 \end{textblock}
    87 
    88 
    88 \begin{textblock}{5.7}(3,13)
    89 \begin{textblock}{5.7}(3,13)
    89 \begin{bubble}[5.7cm]
    90 \begin{bubble}[5.7cm]
    90 \it it takes 0..10 mins to pay with Bitcoins
    91   \it fixed amount of bitcoins in circulation (no inflation)
       
    92   
    91 \end{bubble}
    93 \end{bubble}
    92 \end{textblock}
    94 \end{textblock}
    93 
    95 
    94 \begin{textblock}{5.6}(8,7)
    96 \begin{textblock}{5.6}(8,7)
    95 \begin{bubble}[5.6cm]
    97 \begin{bubble}[5.6cm]
    96 \it Should one mine for Bitcoins?
    98 \it Should one mine for Bitcoins?
    97 \end{bubble}
    99 \end{bubble}
    98 \end{textblock}
   100 \end{textblock}
    99 
   101 
   100 \begin{textblock}{2}(12,12.5)
   102 %\begin{textblock}{2}(12,12.5)
   101 \begin{bubble}[2cm]
   103 %\begin{bubble}[2cm]
   102 \it mined by GPUs
   104 %\it mined by GPUs
   103 \end{bubble}
   105 %\end{bubble}
   104 \end{textblock}
   106 %\end{textblock}
   105 
   107 
   106 \begin{textblock}{3.6}(10,2.3)
   108 \begin{textblock}{3}(11,2.3)
   107 \begin{bubble}[3.6cm]
   109 \begin{bubble}[3cm]
   108 \it can be lost or stolen
   110 \it bitcoins are anonymous
   109 \end{bubble}
   111 \end{bubble}
   110 \end{textblock}
   112 \end{textblock}
   111 
   113 
   112 \end{frame}
   114 \end{frame}
   113 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
   115 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
   245 \end{frame}
   247 \end{frame}
   246 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
   248 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
   247 
   249 
   248 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   250 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   249 \begin{frame}[t]
   251 \begin{frame}[t]
   250 \frametitle{Blockchain}
   252 \frametitle{Blockchain (Public Ledger)}
   251 
   253 
   252 The solution for double spend: 
   254 The solution for double spend: 
   253 
   255 
   254 \begin{itemize}
   256 \begin{itemize}
   255 \item make everybody the bank, everybody has the entire
   257 \item make everybody the bank, everybody has the entire
   266 \end{frame}
   268 \end{frame}
   267 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
   269 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
   268 
   270 
   269 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   271 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   270 \begin{frame}[t]
   272 \begin{frame}[t]
   271 \frametitle{Blockchain}
   273 \frametitle{Blockchain (Public Ledger)}
   272 
   274 
   273 \begin{center}
   275 \begin{center}
   274 \includegraphics[scale=0.5]{../pics/bitcoinblockchain0.png}
   276 \includegraphics[scale=0.5]{../pics/bitcoinblockchain0.png}
   275 \end{center}
   277 \end{center}
   276 
   278 
   404 \includegraphics[scale=0.37]{../pics/blockchainsolving.png}
   406 \includegraphics[scale=0.37]{../pics/blockchainsolving.png}
   405 \end{center}
   407 \end{center}
   406 
   408 
   407 \end{frame}
   409 \end{frame}
   408 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
   410 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
       
   411 
       
   412 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
       
   413 \begin{frame}[t]
       
   414 \frametitle{How to Adjust the Target?}
       
   415 
       
   416 \begin{itemize}
       
   417 \item every 2016 blocks the hardness is adjusted\\ (app 2 weeks)
       
   418 \end{itemize}
       
   419 
       
   420 \begin{center}
       
   421 \includegraphics[scale=0.37]{../pics/blockchainsolving.png}
       
   422 \end{center}
       
   423 
       
   424 \small
       
   425 \[
       
   426 \bl{\begin{array}{@{}l@{}}\text{New}\\ \text{Hardness}\end{array} \dn
       
   427 \begin{array}{@{}l@{}}\text{Old}\\ \text{Hardness}\end{array} 
       
   428 * \frac{\text{Actual time for the last 2016 blocks}}{2016}}
       
   429 \]
       
   430 
       
   431 \end{frame}
       
   432 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
       
   433 
   409 
   434 
   410 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   435 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   411 \begin{frame}[t]
   436 \begin{frame}[t]
   412 \frametitle{Bitcoin Schedule}
   437 \frametitle{Bitcoin Schedule}
   413 
   438 
   868 \end{frame}
   893 \end{frame}
   869 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
   894 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
   870 
   895 
   871 
   896 
   872 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   897 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   873 \begin{frame}[t]
   898 %\begin{frame}[t]
   874 \frametitle{Exam}
   899 %\frametitle{Exam}
   875 
   900 %
   876 
   901 %
   877 \begin{itemize}
   902 %\begin{itemize}
   878   \item Questions will be from homeworks.
   903 %  \item Questions will be from homeworks.
   879 
   904 %
   880   \item Rubric:
   905 %  \item Rubric:
   881   \begin{center}\small
   906 %  \begin{center}\small
   882   \begin{tabular}{lp{7cm}}
   907 %  \begin{tabular}{lp{7cm}}
   883   Time Allowed & Two hours\\ 
   908 %  Time Allowed & Two hours\\ 
   884   Rubric       & ANSWER ALL QUESTIONS\\
   909 %  Rubric       & ANSWER ALL QUESTIONS\\
   885   Calculators  & Calculators are not permitted\\
   910 %  Calculators  & Calculators are not permitted\\
   886   Notes        & Books, notes or other written material 
   911 %  Notes        & Books, notes or other written material 
   887   may not be brought into this examination\\
   912 %  may not be brought into this examination\\
   888   \end{tabular}
   913   \end{tabular}
   889   \end{center} 
   914 %  \end{center} 
   890 \end{itemize} 
   915 %\end{itemize} 
   891 
   916 %
   892 \end{frame}
   917 %\end{frame}
   893 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
   918 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
       
   919 
       
   920 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
       
   921 \begin{frame}[t]
       
   922 %\frametitle{Take Home Points}
       
   923 
       
   924   \begin{center}
       
   925   Next 2 weeks by Jose Such
       
   926   \end{center}  
       
   927       
       
   928 
       
   929 \end{frame}
       
   930 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
       
   931 
   894 
   932 
   895 \end{document}
   933 \end{document}
   896 
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