* Talk @ RubyConf Taiwan 2015 (2015.09.12)
RubyConf Taiwan2015R&B: When RubyMet Bitcoin
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Who Am I?
古傑芳
@josephku
2009
Ruby
2010
2011
2012
Bitcoin
R & B
Rhythm & Blues
Ruby & Bitcoin
When RubyMet Bitcoin
Yukihiro Matsumoto
Matz
Satoshi Nakamoto
Yukihiro MatsumotoSatoshi Nakamoto
Money
Money?
Currency
Have you heard ofBitcoin?I have one bitcoin.
v0.11.0
!
Node.js
v0.12.7
21 Million
10-6 btc = 1 bit
10-8 btc = 1 satoshi
Address
Wallet
Demo Time!
Blockchain
Block
SHA256(Block Data + Nonce) < Target
Difficulty = Maximum Target / Target
Internet of Things
Mining
NT$ 105
0.00815 BTC
Bitcoin Only!!
After a month…
0.00000422 BTC
7.394Mh/s
23,285 days
63.79 years
Can I just pay byNT$105?
Game
1 = 1 bit
Block Size
Any questions?
Thank you!