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2.2.90% GO 10.20% C++ Java Python 9.15% 8.08% 3.99% TOP15 GO 10.20% C++ 9.15% Java 8.08% Python 3.99% 3.54% Linux % 2.90% Linux 2.83% hyperledger 2.30% Javascript 1.83% Node.js 3.99% 1.74% 1.48% 1.33% 1.30% 1.28% 1.28% GO BOSS 

3. Image Place Holder GitHub in blockchain Go Go IBM fabric Go 

4.Go 

5.Go 1 2 3 4 5 6 7 8 

6. Go •A Peer-to-Peer Electronic Cash System Image •2008 11 1 Satoshi Nakamoto •2009 1 3 The Times 03/Jan/2009 Chancellor on brink of second bailout for banks •C++ • :Bitcoin,Litecoin,Darkcoin, 

7. Geth ETH 2014 61% 26% 2014 go-ethereum Geth 9018 Parity 26% c/c++,cpp-ethereum 61% 

8.Go btcd(bitcoin) Gocoin Go-ipfs SaiCoin hyperledger fabric Product Name 6 

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12.... Namespace JS runtime 

13.Go 2 8 1 3 4 6 7 10 G C 5 9 

14.Go 

15. 25 Go keyword GC package 

16. Interface Go type embedding interface 

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18.Go 

19.Go 

20.Go 

21.Go 

22.Go 

23.Go Monte Biz Company 

24.Go 

25.Go • • • • • 

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28.• RPC • Web Service • P2P • Mempool • UTXO • Message(protocol) • Algorithm • Util • Model • Crypto • Storage 

29.