1. Bitcoin 2014416

2. Bitcoin http://www.coindesk.com/price/ 3. 1 (201312) 42,086,555,101 56,441,607,483 69,971,912,138 58,768,800,833 2012GDPUSD) 2011 4. 3 7 63 505 770 1,184 1,452 - 9,358 21,260 $15 $212 $216 $299 $397 $438 $2,434 $7,562 $9,863 $16,518 $0 $5,000 $10,000 $15,000 $20,000 $25,000 Xoom Corp Bitcoin Western Union Company Discover (Discover Network) Paypal Discover (PULSE Network) American Express Co. China UnionPay MasterCard Inc. Visa, Inc. Daily Transaction Volume Daily Transaction Quantity 1Western UnionWU) 1WU101 5. (USD) 6. 1 7. Bitcoin 742 (6000) (900) (45000) Bitcoin 2012-2013 8. ($22) 9. (M1) 0.01BTC = 1 satoshi = 1 (2013121BTC=10) 1,200BTC2,100BTC 2141 10. Bitcoin P2P Network Bitcoin Miner wallet exchange Media Payment Mining H/W 11. Bitcoin () http://www.slideshare.net/11ro_yamasaki/bitcoin2 12. Bitcoin 200811 Cryptography ML 200912010 20143 Im not Dorian Nakamoto Los - NewsWeek Michael Clear New Yorker Ted Nelson US 20100042841 A1 Updating and Distributing Encryption Keys Neal King, Vladimir Oksman, and Charles Bry 13. http://bitcoinmoney.com/post/3109720916/laszlos-pizza 20105Laszlos10,000BTC2 14. Pizza for bitcoins? by laszlo I'll pay 10,000 bitcoins for a couple of pizzas.. like maybe 2 large ones so I have some left over for the next day. I like having left over pizza to nibble on later. May 18, 2010, 12:35:20 AM So nobody wants to buy me pizza? Is the bitcoin amount I'm oering too low? May 21, 2010, 07:06:58 PM I just want to report that I successfully traded 10,000 bitcoins for pizza. Thanks jercos! May 22, 2010, 07:17:26 PM Bitcoin Market 10kBTC = $41 jercos 15. Bitcoin Bitcoin Bitcoin Bitcoin 16. http://anonymity-in-bitcoin.blogspot.jp/2011/07/bitcoin-is-not-anonymous.html 17. WikiLeaks http://anonymity-in-bitcoin.blogspot.jp/2011/07/bitcoin-is-not-anonymous.html 18. MtGOX 20143 19. Silkroad 2.0 Tor Hidden Service Onion Duck Duck Go 20. : http://en.wikipedia.org/wiki/Legality_of_Bitcoins_by_country : : : : 21. http://coinmap.org/ 22. Bitcoin ATM 23. http://coinmap.org/ 24. Bitcoin 25. PoW NW (Transaction Malleability) MtGOX PoW !VS 26. MtGOX 2MtGOX8.7BTC 85BTC Bitcoin? Blockchain 27 27 27. 20142 28. 27 29. Bitcoin Transaction Malleability and MtGox The transaction malleability problem is real and should be considered when im- plementing Bitcoin clients. However, while MtGox claimed to have lost 850,000 bitcoins due to malleability attacks, we merely observed a total of 302,000 bit- coins ever being involved in malleability attacks. Of these, only 1,811 bitcoins were in attacks before MtGox stopped users from withdrawing bitcoins. Even more, 78.64% of these attacks were ineective. As such, barely 386 bitcoins could have been stolen using malleability attacks from MtGox or from other businesses. Bitcoin Transaction Malleability and MtGox http://arxiv.org/pdf/1403.6676v1.pdf 30. MtGOXBitcoin Bitcoin 31. () Bitcoin Blockchain () Application of FinCENs Regulations to Virtual Currency Software Development and Certain Investment Activity (Bitcoin) () 32. http://pay-bit.net/lp/ 33. Mining Hardware Amazon ASICMiner Block Erupter USB 330MH/s Sapphire Miner PC GPU, FPGA ASIC Buttery Labs 600GH/s COINTERRA 2TH/s 34. Bitcoin Mining Operation http://arstechnica.com/information-technology/2014/03/meet-the-manic-miner-who-wants-to-mint-10-of-all-new-bitcoins/ 35. Mutual Public 36. 11Miner 37. http://bitcoinwisdom.com/bitcoin/diculty 38. Mining pool : https://blockchain.info/pools 39. 500 0 20000 40000 60000 80000 100000 120000 140000 160000 1 11 21 31 41 51 61 71 81 91 101 111 121 131 141 151 161 171 181 191 201 211 221 231 241 251 261 271 281 291 301 311 321 331 341 351 361 371 381 391 401 411 421 431 441 451 461 471 481 491 http://bitcoinrichlist.com/top500 (2014.3.19) 40. Bitcoin 46 10k 3.6M 820 1k-10k 2.4M 10k 100-1k 2.8M 68k 10-100 2.0M 250k 1-10 0.8M 550k 0.1-1 0.2M 690k 0.01-0.1 0.0M 430k 0.001-0.01 0.0M 41. The MtGOX 500 http://bitcoin.stamen.com/ 42. Bitcoin Barons http://bitcoin.stamen.com/ 43. Greater Fools http://bitcoin.stamen.com/ 44. : http://coinmarketcap.com/ 45. http://www.coinwarz.com/cryptocurrency 46. (281) : http://nyatla.hatenadiary.jp/entry/20140310/1394453817 47. (456) : http://nyatla.hatenadiary.jp/entry/20140310/1394453817 48. Bitcoin DoS Bitcoin PW 49. FBI (20124) FBI2 Bitcoin FinCEN http://cryptome.org/2012/05/fbi-bitcoin.pdf 50. Bitcoin 51. MtGOX MtGOXBitcoin Bitcoin Bitcoin Forensics MtGOX BTC BTC 52. Bitcoin Blockchain 53. Bitcoin ? Altcoin Altcoin (Bitcoin) (Ripple) () : (1940) : (1976) 54. http://www.slideshare.net/masanork http://b.hatena.ne.jp/mkusunok/bitcoin