Explanation about Blockchain at the university class.

1. Blockchain
211587 Taichi Watanabe

2. Definition
≠
Cryptocurrency Blockchain

3. History
1990s：Starting study of cryptocurrency in US
2008：Satoshi Nakamoto published a paper on
“Bitcoin”
2014：Mt Gox was hacked in Japan
2015：Ethereum was created
2018：Coincheck was hacked in Japan

4. Lehman shock
(Bankruptcy of Lehman Brothers) in 2008
The bubble economy collapsed
and American investment banks got into financial trouble.
And then, the government offered economic assistance
and relieved their banks.
Many people had doubts about the financial system

5. The paper of Bitcoin in 2008

6. Satoshi Nakamoto consensus

7. Mining
Calculating by computers to support blockchain consensus
& Economic incentive to sustain blockchain system (POW).
If your mining succeed and find nance number in Bitcoin blockchain,
you could get 12.5BTC.
Someone find nance number
every 10 minutes in the world.

8. Ethereum

9. ICO (Initial coin offering)
A fundraising mechanism in which new projects sell their underlying
crypto tokens in exchange for bitcoin and ether.

10. Future Look
Blockchain system could not apply everything.
It could be useful in some case like overseas
remittance, in countryside, some games and etc…

11. Works Cited
• What Is an ICO?
https://bitcoinmagazine.com/guides/what-ico/
• Bitcoin: A Peer-to-Peer Electronic Cash System
https://bitcoin.org/bitcoin.pdf
• Bankruptcy of Lehman Brothers
https://en.wikipedia.org/wiki/Bankruptcy_of_Lehman_Brothe
rs

12. Thank you.