These are the slides for the presentation I held at Bitcoin Conference in New York on August 20th, 2011. They are a modified/shortened version of my slides from the Webtuesday talk.

1. $
BitcoinJS
Scaling up and locking down
Stefan Thomas • WeUseCoins.com
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2. $ login
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3. $ login
homas
S tefan T
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4. $ login
- Web developer
homas
tefan T
13 years
S
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5. $ login
- Web developer
homas
tefan T
13 years
S
- Bitcoin evangelist
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6. $ login
- Web developer
homas
tefan T
13 years
S
- Bitcoin evangelist
6 months
www.bitcoinjs.org Creative Commons 3.0 Attribution

7. $ login
- Web developer
homas
tefan T
13 years
S
??
- Bitcoin evangelist
6 months
www.bitcoinjs.org Creative Commons 3.0 Attribution

8. $ login
- Web developer
homas
tefan T
13 years
S
??
- Bitcoin evangelist
6 months
)_/¯
¯_(
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9. $ ls
- What’s Bitcoin? (1 slide version)
- Things that are... sub-optimal
- Node.js to the rescue!
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10. $ wget blk*.dat
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11. $ wget blk*.dat
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12. $ wget blk*.dat
x 140000
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13. $ wget blk*.dat
x 140000
= 620 MB
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14. $ wget blk*.dat
x 140000
= 620 MB => 6-24 hours
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15. $ wget blk*.dat
x 140000
= 620 MB => 6-24 hours
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16. $ rm wallet.dat
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17. $ rm wallet.dat
VirtualBox Dropbox Ironkey
+
Truecrypt
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18. $ rm wallet.dat
_
-
-
_
-
VirtualBox Dropbox Ironkey
+
Truecrypt
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19. $ rm wallet.dat
_ _
-
-
- -
_
_
-
-
VirtualBox Dropbox Ironkey
+
Truecrypt
www.bitcoinjs.org Creative Commons 3.0 Attribution

20. $ rm wallet.dat
_ _ _
-
-
-
- - -
_
_
_
-
-
-
VirtualBox Dropbox Ironkey
+
Truecrypt
www.bitcoinjs.org Creative Commons 3.0 Attribution

21. $ rm wallet.dat
A IL]
_ _ _
-
-
-
- - -
[F
_
_
_
-
-
-
VirtualBox Dropbox Ironkey
+
Truecrypt
www.bitcoinjs.org Creative Commons 3.0 Attribution

22. $ rm wallet.dat
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23. $ rm wallet.dat
A IL]
[F
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24. $ scp wallet.dat
Metasploit 4.0
These additions include nine new SCADA exploits, improved
64-bit Linux payloads, exploits for Firefox and Internet Explorer,
full-HTTPS and HTTP Meterpreter stagers, and post-
exploitation modules for dumping passwords from Outlook,
WSFTP, CoreFTP, SmartFTP, TotalCommander, BitCoin and
many other applications.
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25. $ scp wallet.dat
!
Yay
Metasploit 4.0
These additions include nine new SCADA exploits, improved
64-bit Linux payloads, exploits for Firefox and Internet Explorer,
full-HTTPS and HTTP Meterpreter stagers, and post-
exploitation modules for dumping passwords from Outlook,
WSFTP, CoreFTP, SmartFTP, TotalCommander, BitCoin and
many other applications.
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26. $ scp wallet.dat
!
Yay
Metasploit 4.0
blah new post exploitation modules
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27. $ scp wallet.dat
!
Yay
Metasploit 4.0
blah new post exploitation modules
blah blah for dumping passwords blah
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28. $ scp wallet.dat
!
Yay
Metasploit 4.0
blah new post exploitation modules
blah blah for dumping passwords blah
Blah, BitCoin, Blah, …
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29. $ scp wallet.dat
!
Yay
Metasploit 4.0
blah new post exploitation modules
blah blah for dumping passwords blah
Blah, BitCoin, Blah, …
uh oh
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30. $ cat cmn_sense.txt
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31. $ cat cmn_sense.txt
Block chain
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32. $ uml blockchain
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33. $ cat cmn_sense.txt
Block chain
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34. $ cat cmn_sense.txt
Block chain UI
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35. $ cat cmn_sense.txt
Block chain UI Wallet
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36. $ cat cmn_sense.txt
Block chain UI Wallet
• HUGE!!
• Global
• Public
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37. $ cat cmn_sense.txt
Block chain UI Wallet
• HUGE!!
• Global
• Public
-> Server
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38. $ cat cmn_sense.txt
Block chain UI Wallet
• HUGE!! • Complex
• Global • Personal
• Public • Private
-> Server
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39. $ cat cmn_sense.txt
Block chain UI Wallet
• HUGE!! • Complex
• Global • Personal
• Public • Private
-> Server -> Client
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40. $ cat cmn_sense.txt
Block chain UI Wallet
• HUGE!! • Complex • Simple
• Global • Personal • Personal
• Public • Private • Secret!!
-> Server -> Client
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41. $ cat cmn_sense.txt
Block chain UI Wallet
• HUGE!! • Complex • Simple
• Global • Personal • Personal
• Public • Private • Secret!!
(ideally)
-> Server -> Client -> Hardware
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42. $ find platform
Block chain server
• Peer-to-peer node
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43. $ find platform
Block chain server
• Peer-to-peer node
• Realtime
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44. $ find platform
Block chain server
• Peer-to-peer node
• Realtime
• JSON-RPC
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45. $ find platform
Block chain server
• Peer-to-peer node
• Realtime
• JSON-RPC
• Lots of concurrent users
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46. $ find platform
Block chain server
• Peer-to-peer node
• Realtime
• JSON-RPC
• Lots of concurrent users
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47. $ find platform
Block chain server
• Peer-to-peer node
• Realtime
• JSON-RPC
• Lots of concurrent users
+
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48. $ d8 server.js
Lesson
Node.js libraries
can be strange
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49. $ d8 server.js
Lesson
Node.js libraries
can be strange
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50. $ d8 server.js
Lesson But:
Node.js libraries Foundation is very good!
can be strange
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51. $ git clone bitcoinjs-gui
A matching client!
- JS-based crypto (fun stuff!)
- HTML5 LocalStorage
- Socket.IO
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52. $ git clone bitcoinjs-gui
A matching client!
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53. $ wallet 2.0
Ideas for a more secure wallet
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54. $ wallet 2.0
Ideas for a more secure wallet
- Deterministic Wallet
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55. $ wallet 2.0
Ideas for a more secure wallet
- Deterministic Wallet
- Distributed Key Generation
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56. $ wallet 2.0
Ideas for a more secure wallet
- Deterministic Wallet
- Distributed Key Generation
- Hardware Device
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57. $ exit
Thank you
And good night!
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58. $ tail -f
github.com/bitcoinjs
@bitcoinjs
webcoin.ch
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