Add Bitcoin application slides #50
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I created a first draft of the slides about some applications of bitcoin. I added many icons which I use in the slides . I also added two additional tex files specifying the color scheme for the languages json and solidity in Latex.
Added the definition of the Bitcoin Symbol in an independent file
Added the definition of the JSON color coding in an independent file
Continued the slides on the Bitcoin applications
Renamed the file to make it consistent with the title
Added the package "adjustbox" which can be used to scale listings.
Added the DeFi-Paper of Fabian to the reference list
Finished first version of bitcoin application slides
golmit
reviewed
May 14, 2021
slides/bitcoin_applications.tex
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| \begin{itemize}[<+->] | ||
| \item Example: Tracking ownership of a parcel | ||
| \item On-Chain representation of parcel with unique token | ||
| \item Reproducible crypto-anker (e.g.~QR-code) is problematic |
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Suggested change
| \item Reproducible crypto-anker (e.g.~QR-code) is problematic | |
| \item Reproducible crypto anchor (e.g.~QR-code) is problematic |
slides/bitcoin_applications.tex
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| \vspace{0.2cm} | ||
| \item<4->[3.] More than one oracle and use m-of-n multisig transaction. | ||
| \begin{itemize} | ||
| \item<4-> Agents hold $\frac{m}{2}$ keys and m-1 oracles hold one key each. |
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Agents "each" hold m/2 keys?
E.g. m = 4
- each agent holds 2 keys (2*2)
- each oracle holds 1 key (3*1)
- total of 7 keys
- 4-of-7 multisig
slides/bitcoin_applications.tex
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| \textbf{\large{Verification:}} | ||
| \begin{columns} | ||
| \begin{column}{0.3\textwidth} | ||
| \centering | ||
| \includegraphics[width=1.5cm]{../assets/images/receive_diploma.png}\\ | ||
| Potential employer receives diploma | ||
| \end{column} | ||
| \begin{column}{0.05\textwidth} | ||
| \includegraphics[width=0.75cm]{../assets/images/big_arrow.png} | ||
| \end{column} | ||
| \begin{column}{0.3\textwidth} | ||
| \centering | ||
| \includegraphics[width=1.5cm]{../assets/images/fingerprint.png}\\ | ||
| Computes hash value of diploma | ||
| \end{column} | ||
| \begin{column}{0.05\textwidth} | ||
| \includegraphics[width=0.75cm]{../assets/images/big_arrow.png} | ||
| \end{column} | ||
| \begin{column}{0.3\textwidth} | ||
| \centering | ||
| \includegraphics[width=1.5cm]{../assets/images/verify_onchain.png}\\ | ||
| Compares with on-chain hash value | ||
| \end{column} | ||
| \end{columns} |
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Suggestion: uncover verification part on new slide
Suggested change
| \textbf{\large{Verification:}} | |
| \begin{columns} | |
| \begin{column}{0.3\textwidth} | |
| \centering | |
| \includegraphics[width=1.5cm]{../assets/images/receive_diploma.png}\\ | |
| Potential employer receives diploma | |
| \end{column} | |
| \begin{column}{0.05\textwidth} | |
| \includegraphics[width=0.75cm]{../assets/images/big_arrow.png} | |
| \end{column} | |
| \begin{column}{0.3\textwidth} | |
| \centering | |
| \includegraphics[width=1.5cm]{../assets/images/fingerprint.png}\\ | |
| Computes hash value of diploma | |
| \end{column} | |
| \begin{column}{0.05\textwidth} | |
| \includegraphics[width=0.75cm]{../assets/images/big_arrow.png} | |
| \end{column} | |
| \begin{column}{0.3\textwidth} | |
| \centering | |
| \includegraphics[width=1.5cm]{../assets/images/verify_onchain.png}\\ | |
| Compares with on-chain hash value | |
| \end{column} | |
| \end{columns} | |
| \uncover<2->{ | |
| \textbf{\large{Verification:}} | |
| \begin{columns} | |
| \begin{column}{0.3\textwidth} | |
| \centering | |
| \includegraphics[width=1.5cm]{../assets/images/receive_diploma.png}\\ | |
| Potential employer receives diploma | |
| \end{column} | |
| \begin{column}{0.05\textwidth} | |
| \includegraphics[width=0.75cm]{../assets/images/big_arrow.png} | |
| \end{column} | |
| \begin{column}{0.3\textwidth} | |
| \centering | |
| \includegraphics[width=1.5cm]{../assets/images/fingerprint.png}\\ | |
| Computes hash value of diploma | |
| \end{column} | |
| \begin{column}{0.05\textwidth} | |
| \includegraphics[width=0.75cm]{../assets/images/big_arrow.png} | |
| \end{column} | |
| \begin{column}{0.3\textwidth} | |
| \centering | |
| \includegraphics[width=1.5cm]{../assets/images/verify_onchain.png}\\ | |
| Compares with on-chain hash value | |
| \end{column} | |
| \end{columns} | |
| } |
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| \begin{frame}{Commit-Reveal} | ||
| \begin{itemize} | ||
| \item<1 -> Long known cryptographic primitive | ||
| \item<2 -> First, commitment to a choice, without revealing it. | ||
| \item<3 -> In second phase, choice is revealed. | ||
| \item<4 -> Important: Commitment is secret and binding.\vspace{0.5cm} | ||
| \item<5 -> Example: | ||
| \begin{itemize} | ||
| \item<5 -> Alice and Bob want to play rock-paper-scissors | ||
| \item<6 -> Playing at the exact same time is difficult on blockchains | ||
| \item<7 -> Solution: To commit to their choices, they hash them (salted) and save the hash value on-chain | ||
| \item<8 -> Revealing their choices and the salts they can then determine the winner in a second step | ||
| \end{itemize} | ||
| \end{itemize} | ||
| \end{frame} |
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Do students already understand what a "salt" is? Maybe this example should be more in-depth.
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I thought that this could be explained in this example, as it is shown in the JSON passport and in the merkle tree.
slides/bitcoin_applications.tex
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| \end{columns} | ||
| \vspace{0.5cm} | ||
| \uncover<2 ->{ | ||
| Vending Maschine: |
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Suggested change
| Vending Maschine: | |
| Vending Machine: |
Forgot to switch back to beamer handout before
Included the review of @golmit. Thank you very much!
|
Thank you @golmit for your review and for finding these quite embarassing typos! @chainomics Please check the definition of smart contracts I used. I took the first sentence of the definition in the DeFi paper, but the definition there goes on for a couple of sentences. Maybe you know a short definition which fits on this slide? For the vending machine example on slide 14 I relied heavily on the smart contracts lecture slides, but was not sure if I understood the storyline correctly. You might want to adapt the two bullet points on this slide. |
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