1. Bitcoin MengLin 2013/05/06

2. What is Bitcoin

3. Summary Started from 2009/01/03 Decentralized system (P2P no single host failure) Anonymous account (hard to track) Predictable amount with a hard-limit of 21 million bitcoins (more valuable) Open source (everyone can examine) Value increases as user increases

4. Bid and Ask between other currencies 1 BTC about 100 USD 澳大利亞元 捷克克朗 丹麥克朗 歐元 英鎊 匈牙利福林 冰島克朗 挪威克朗 波蘭茲羅提 羅馬尼亞新列伊 瑞典克朗 美元

5. How to make Bitcoin Use your CPU or GPU to find an key that generate hashes matching numbers of leading 0-bits Really hard to generate a block (key)

6. Tips for faster block generation Buy a good video card $350 GPU > $4700 12-core CPU by more than 5x Choose right brand AMD > NVIDIA by more than 2x FPGA saves power Application Specific Integrated Circuit (ASIC) But, still hard…

7. Mining pool Everybody generate block together!!

8. Where to Buy & Sell https://en.bitcoin.it/wiki/Selling_bitcoins

9. What can it use for?? Drug trafficking or something illegal Donation to WikiLeaks ( 維基解密 )… The Pirate Bay WordPress in some third world countries

10. Go shopping for real products http://www.bitmit.net/en/recent

11. Joke Mike Lazio purchased the pizza in May of 2010 using 10,000 BTC At that time, 1BTC = 0.3 cents USD Today, …

12. Future Restricted by government Bug Competition Ripple

13. Reference http://en.wikipedia.org/wiki/Bitcoin https://en.bitcoin.it/wiki/Main_Page https://en.bitcoin.it/wiki/How_bitcoin_works https://en.bitcoin.it/wiki/Mining https://www.weusecoins.com/en/ https://www.weusecoins.com/en/mining-guide http://ca.news.yahoo.com/blogs/right-click/why-bitcoin-something-definitely-pay-attention- 145734462.html http://ca.news.yahoo.com/blogs/right-click/why-bitcoin-something-definitely-pay-attention- 145734462.html http://blog.chicheng.me/2011/05/how-to-mining-bitcoin/ http://www.36kr.com/p/24387.html http://saving.cc/bitcoin/

14. Bid-Ask Spread The bid is the price at which the market would buy the currency pair (before any commissions or fees) The offer (or ask) is the price at which the market would sell the currency pair (before any commissions or fees).

15. Bitcoin Mining Calculator http://www.bitcoinx.com/profit/ http://bitclockers.com/miningcalculator

16. Buy A Guide to Bitcoin Mining: Why Someone Bought a $1,500 Bitcoin Miner on eBay for $20,600 http://motherboard.vice.com/blog/a-guide-to-bitcoin-mining-why- someone-bought-a-1500-bitcoin-miner-on-ebay-for-20600 What would you do for bitcoin. The fun marketplace. http://forbitcoin.com/

17. Source code https://github.com/bitcoin/bitcoin