'Blockchain and Cryptocurrency' Subject @ Korea University, 2021
01. Syllabus
02. Blockchain Overview and Introduction - Technical Concepts of Blockchain Systems -
03. Blockchain's Theoretical Foundation, Cryptography
04. Bitcoin and Nakamoto Blockchain
05. Ethereum and Smart Contract
06. NFT and Metaverse
07. Cardano(ADA) and Other Altcoins
08. Dark Coins
09. Blockchain Usage Beyond Currency - Way to Design Good Blockchain Business Models -
[Blockchain and Cryptocurrency] 05. Ethereum and Smart ContractSeungjoo Kim
ย
'Blockchain and Cryptocurrency' Subject @ Korea University, 2021
01. Syllabus
02. Blockchain Overview and Introduction - Technical Concepts of Blockchain Systems -
03. Blockchain's Theoretical Foundation, Cryptography
04. Bitcoin and Nakamoto Blockchain
05. Ethereum and Smart Contract
06. NFT and Metaverse
07. Cardano(ADA) and Other Altcoins
08. Dark Coins
09. Blockchain Usage Beyond Currency - Way to Design Good Blockchain Business Models -
Magister Advisors - Blockchain & Bitcoin in 2016 - A Survey Of Global LeadersJeremy Millar
ย
As Bitcoin and Blockchain investment fast approaches $1bn, we have spent the last three months speaking with over 30 of the leading Bitcoin and Blockchain companies globally, plus industry groups, financial institutions and investors, to gain detailed insight and understanding of the development of the market and the direction these fascinating technologies will take in 2016.
We are pleased to share our work and findings with you and the broader community.
You can read our report โBitcoin and Blockhain in 2016: A Global Surveyโ here.
If you are interested in a personal briefing or a briefing for your firm, please feel free to contact us (jmillar@magisteradvisors.com).
Bitcoin is a digital currency created in 2009. It follows the ideas set out in a white paper by the mysterious Satoshi Nakamoto,Bitcoin is a decentralised electronic currency which is not backed by any other currency as it is a stand-alone currency traded against other currencies.
Blockchain technology and applications from a financial perspectiveTommaso Pellizzari
ย
Blockchain iniatives and projects are part of UniCredit digital agenda, which aims at leveraging on new technologies to reshape the Group and create new business opportunities. Unicredit white paper gives a presentation of the technology and enlightens the blockchain opportunity for the financial industry.
MasterSnacks: Cryptocurrency - Fraud and Forensic Accounting for Digital AssetsCitrin Cooperman
ย
Bitcoin and other cryptocurrencies were custom designed for anonymity, which can be a major problem in cases where individuals attempt to hide their wealth from the legal system. In this session, we covered the steps and information investigators need to know in order to locate, trace, and possibly even seize crypto assets from the target of an investigation.
[Blockchain and Cryptocurrency] 05. Ethereum and Smart ContractSeungjoo Kim
ย
'Blockchain and Cryptocurrency' Subject @ Korea University, 2021
01. Syllabus
02. Blockchain Overview and Introduction - Technical Concepts of Blockchain Systems -
03. Blockchain's Theoretical Foundation, Cryptography
04. Bitcoin and Nakamoto Blockchain
05. Ethereum and Smart Contract
06. NFT and Metaverse
07. Cardano(ADA) and Other Altcoins
08. Dark Coins
09. Blockchain Usage Beyond Currency - Way to Design Good Blockchain Business Models -
Magister Advisors - Blockchain & Bitcoin in 2016 - A Survey Of Global LeadersJeremy Millar
ย
As Bitcoin and Blockchain investment fast approaches $1bn, we have spent the last three months speaking with over 30 of the leading Bitcoin and Blockchain companies globally, plus industry groups, financial institutions and investors, to gain detailed insight and understanding of the development of the market and the direction these fascinating technologies will take in 2016.
We are pleased to share our work and findings with you and the broader community.
You can read our report โBitcoin and Blockhain in 2016: A Global Surveyโ here.
If you are interested in a personal briefing or a briefing for your firm, please feel free to contact us (jmillar@magisteradvisors.com).
Bitcoin is a digital currency created in 2009. It follows the ideas set out in a white paper by the mysterious Satoshi Nakamoto,Bitcoin is a decentralised electronic currency which is not backed by any other currency as it is a stand-alone currency traded against other currencies.
Blockchain technology and applications from a financial perspectiveTommaso Pellizzari
ย
Blockchain iniatives and projects are part of UniCredit digital agenda, which aims at leveraging on new technologies to reshape the Group and create new business opportunities. Unicredit white paper gives a presentation of the technology and enlightens the blockchain opportunity for the financial industry.
MasterSnacks: Cryptocurrency - Fraud and Forensic Accounting for Digital AssetsCitrin Cooperman
ย
Bitcoin and other cryptocurrencies were custom designed for anonymity, which can be a major problem in cases where individuals attempt to hide their wealth from the legal system. In this session, we covered the steps and information investigators need to know in order to locate, trace, and possibly even seize crypto assets from the target of an investigation.
[Blockchain and Cryptocurrency] 04. Bitcoin and Nakamoto BlockchainSeungjoo Kim
ย
'Blockchain and Cryptocurrency' Subject @ Korea University, 2021
01. Syllabus
02. Blockchain Overview and Introduction - Technical Concepts of Blockchain Systems -
03. Blockchain's Theoretical Foundation, Cryptography
04. Bitcoin and Nakamoto Blockchain
05. Ethereum and Smart Contract
06. NFT and Metaverse
07. Cardano(ADA) and Other Altcoins
08. Dark Coins
09. Blockchain Usage Beyond Currency - Way to Design Good Blockchain Business Models -
[Blockchain and Cryptocurrency] 09. Blockchain Usage Beyond Currency - Way to...Seungjoo Kim
ย
'Blockchain and Cryptocurrency' Subject @ Korea University, 2021
01. Syllabus
02. Blockchain Overview and Introduction - Technical Concepts of Blockchain Systems -
03. Blockchain's Theoretical Foundation, Cryptography
04. Bitcoin and Nakamoto Blockchain
05. Ethereum and Smart Contract
06. NFT and Metaverse
07. Cardano(ADA) and Other Altcoins
08. Dark Coins
09. Blockchain Usage Beyond Currency - Way to Design Good Blockchain Business Models -
[Blockchain and Cryptocurrency] 07. Cardano(ADA) and Other AltcoinsSeungjoo Kim
ย
'Blockchain and Cryptocurrency' Subject @ Korea University, 2021
01. Syllabus
02. Blockchain Overview and Introduction - Technical Concepts of Blockchain Systems -
03. Blockchain's Theoretical Foundation, Cryptography
04. Bitcoin and Nakamoto Blockchain
05. Ethereum and Smart Contract
06. NFT and Metaverse
07. Cardano(ADA) and Other Altcoins
08. Dark Coins
09. Blockchain Usage Beyond Currency - Way to Design Good Blockchain Business Models -
[Blockchain and Cryptocurrency] 06. NFT and MetaverseSeungjoo Kim
ย
'Blockchain and Cryptocurrency' Subject @ Korea University, 2021
01. Syllabus
02. Blockchain Overview and Introduction - Technical Concepts of Blockchain Systems -
03. Blockchain's Theoretical Foundation, Cryptography
04. Bitcoin and Nakamoto Blockchain
05. Ethereum and Smart Contract
06. NFT and Metaverse
07. Cardano(ADA) and Other Altcoins
08. Dark Coins
09. Blockchain Usage Beyond Currency - Way to Design Good Blockchain Business Models -
[Blockchain and Cryptocurrency] 01. SyllabusSeungjoo Kim
ย
'Blockchain and Cryptocurrency' Subject @ Korea University, 2021
01. Syllabus
02. Blockchain Overview and Introduction - Technical Concepts of Blockchain Systems -
03. Blockchain's Theoretical Foundation, Cryptography
04. Bitcoin and Nakamoto Blockchain
05. Ethereum and Smart Contract
06. NFT and Metaverse
07. Cardano(ADA) and Other Altcoins
08. Dark Coins
09. Blockchain Usage Beyond Currency - Way to Design Good Blockchain Business Models -
[Blockchain and Cryptocurrency] 03. Blockchain's Theoretical Foundation, Cryp...Seungjoo Kim
ย
'Blockchain and Cryptocurrency' Subject @ Korea University, 2021
01. Syllabus
02. Blockchain Overview and Introduction - Technical Concepts of Blockchain Systems -
03. Blockchain's Theoretical Foundation, Cryptography
04. Bitcoin and Nakamoto Blockchain
05. Ethereum and Smart Contract
06. NFT and Metaverse
07. Cardano(ADA) and Other Altcoins
08. Dark Coins
09. Blockchain Usage Beyond Currency - Way to Design Good Blockchain Business Models -
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01. Syllabus
02. Blockchain Overview and Introduction - Technical Concepts of Blockchain Systems -
03. Blockchain's Theoretical Foundation, Cryptography
04. Bitcoin and Nakamoto Blockchain
05. Ethereum and Smart Contract
06. NFT and Metaverse
07. Cardano(ADA) and Other Altcoins
08. Dark Coins
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'Blockchain and Cryptocurrency' Subject @ Korea University, 2021
01. Syllabus
02. Blockchain Overview and Introduction - Technical Concepts of Blockchain Systems -
03. Blockchain's Theoretical Foundation, Cryptography
04. Bitcoin and Nakamoto Blockchain
05. Ethereum and Smart Contract
06. NFT and Metaverse
07. Cardano(ADA) and Other Altcoins
08. Dark Coins
09. Blockchain Usage Beyond Currency - Way to Design Good Blockchain Business Models -
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'Blockchain and Cryptocurrency' Subject @ Korea University, 2021
01. Syllabus
02. Blockchain Overview and Introduction - Technical Concepts of Blockchain Systems -
03. Blockchain's Theoretical Foundation, Cryptography
04. Bitcoin and Nakamoto Blockchain
05. Ethereum and Smart Contract
06. NFT and Metaverse
07. Cardano(ADA) and Other Altcoins
08. Dark Coins
09. Blockchain Usage Beyond Currency - Way to Design Good Blockchain Business Models -
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'Blockchain and Cryptocurrency' Subject @ Korea University, 2021
01. Syllabus
02. Blockchain Overview and Introduction - Technical Concepts of Blockchain Systems -
03. Blockchain's Theoretical Foundation, Cryptography
04. Bitcoin and Nakamoto Blockchain
05. Ethereum and Smart Contract
06. NFT and Metaverse
07. Cardano(ADA) and Other Altcoins
08. Dark Coins
09. Blockchain Usage Beyond Currency - Way to Design Good Blockchain Business Models -
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'Blockchain and Cryptocurrency' Subject @ Korea University, 2021
01. Syllabus
02. Blockchain Overview and Introduction - Technical Concepts of Blockchain Systems -
03. Blockchain's Theoretical Foundation, Cryptography
04. Bitcoin and Nakamoto Blockchain
05. Ethereum and Smart Contract
06. NFT and Metaverse
07. Cardano(ADA) and Other Altcoins
08. Dark Coins
09. Blockchain Usage Beyond Currency - Way to Design Good Blockchain Business Models -
[Blockchain and Cryptocurrency] 03. Blockchain's Theoretical Foundation, Cryp...Seungjoo Kim
ย
'Blockchain and Cryptocurrency' Subject @ Korea University, 2021
01. Syllabus
02. Blockchain Overview and Introduction - Technical Concepts of Blockchain Systems -
03. Blockchain's Theoretical Foundation, Cryptography
04. Bitcoin and Nakamoto Blockchain
05. Ethereum and Smart Contract
06. NFT and Metaverse
07. Cardano(ADA) and Other Altcoins
08. Dark Coins
09. Blockchain Usage Beyond Currency - Way to Design Good Blockchain Business Models -
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'Blockchain and Cryptocurrency' Subject @ Korea University, 2021
01. Syllabus
02. Blockchain Overview and Introduction - Technical Concepts of Blockchain Systems -
03. Blockchain's Theoretical Foundation, Cryptography
04. Bitcoin and Nakamoto Blockchain
05. Ethereum and Smart Contract
06. NFT and Metaverse
07. Cardano(ADA) and Other Altcoins
08. Dark Coins
09. Blockchain Usage Beyond Currency - Way to Design Good Blockchain Business Models -
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ย
Even in this pandemic situation, thank you for making and running the HITCON 2021 so well. Thank you for giving me the chance to talk!
This presentation is revised by reinforcing Q&A. Look forward to seeing you offline next year!
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IoT Device Hacking and New Direction of IoT Security Evaluation Using Common Criteria @ ICCC 2019 (International Common Criteria Conference), which is a major conference for the community of experts involved in security evaluation
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This is a summary of my talk at Microsoft Digital Crimes Consortium 2017 Panel: "Going Offline - The Role of Network Separation in Government Civilian Networks" (March 14, 2017)
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[Poster] Deep Learning Based Real-Time DNS DDoS Detection System @ ACSAC 2016 (The 32nd Annual Computer Security Applications Conference 2016), which is one of the most important cyber security conferences in the world and the oldest information security conference held annually
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17. ๊ณ ๋ ค๋ํ๊ต์ ๋ณด๋ณดํธ๋ํ์
๋ง์คํฐ ์ ๋ชฉ ์คํ์ผ ํธ์ง
[์ฐธ๊ณ ] ๋น์ํด ์ค๋ฅ (Byzantine Faults)
(ACM Transactions on Programming Languages and Systems (TOPLAS), July 1982)
17
๏ผ Bugs (Perhaps on a single node)
๏ผ Intentional malice (Perhaps a single node)
๏ผ Conspiracies (Multiple bad nodes)
Byzantine Faults
21. ๊ณ ๋ ค๋ํ๊ต์ ๋ณด๋ณดํธ๋ํ์
๋ง์คํฐ ์ ๋ชฉ ์คํ์ผ ํธ์ง
(Vitalik Buterin)
โWhereas most technologies
tend to automate workers on
the periphery doing menial
tasks, blockchains automate
away the center. Instead of
putting the taxi driver out of a
job, blockchain puts Uber out of
a job and lets the taxi drivers
work with the customer directly.โ
21
39. ๊ณ ๋ ค๋ํ๊ต์ ๋ณด๋ณดํธ๋ํ์
๋ง์คํฐ ์ ๋ชฉ ์คํ์ผ ํธ์ง
๏ผ โInteroperability should be enabled between CBDC (central bank digital currency)
systems of different jurisdictions and exchange.โ
๏ผ "We also propose a scalable and overseen foreign exchange platform supported
by DLT (distributed ledger technology like blockchain) or other technologies."
39
53. ๊ณ ๋ ค๋ํ๊ต์ ๋ณด๋ณดํธ๋ํ์
๋ง์คํฐ ์ ๋ชฉ ์คํ์ผ ํธ์ง
(Financial Cryptography and Data Security 2018)
Neither are all that decentralized!
Both Bitcoin and Ethereum mining are very
centralized, with the top 4 miners in Bitcoin and
the top 3 miners in Ethereum controlling more
than 50% of the hash rate.
53
ํ์ค์ํ(Decentralization) ๋ฌธ์
63. ๊ณ ๋ ค๋ํ๊ต์ ๋ณด๋ณดํธ๋ํ์
๋ง์คํฐ ์ ๋ชฉ ์คํ์ผ ํธ์ง
(Financial Cryptography and Data Security 2018)
Our quantitative analysis shows that 1.4% of the
roughly 251 million transactions in Bitcoin's
blockchain contained data that had nothing to do
with bitcoin. Among these files there may be
objectionable contents such as links to child
pornography, copyright violations, privacy violations,
politically sensitive content, malware, etc.
63
๊ฐ์ธ์ ๋ณด๋ณดํธ ๋ฌธ์
66. ๊ณ ๋ ค๋ํ๊ต์ ๋ณด๋ณดํธ๋ํ์
๋ง์คํฐ ์ ๋ชฉ ์คํ์ผ ํธ์ง
๏ถ ยฉ2021 by Seungjoo Gabriel Kim. Permission to
make digital or hard copies of part or all of this
material is currently granted without fee
provided that copies are made only for personal
or classroom use, are not distributed for profit
or commercial advantage, and that new copies
bear this notice and the full citation.
66