公司內部分享

1. Blockchain 101
1

2. FinTech
Bitcoin
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????????
????????
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3. ,
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4. 8

5. Blockchain
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6. TED
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7. 11

8. OS: User Story! ~~ ( )
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9. 13

10. 21,000,000
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11. • Cryptocurrency
• Internet of Money
•
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12. 16

13. • , , Apple Pay
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14. 53
韩梅梅 李雷
0.319 BTC
Fees 0.001 BTC
0.32 BTC
1AnLpMkAmf7jy2BNkP3oYw1phzhNuLws7M (0.32 BTC) 1GJYiog3ato17SSTFCCdkZ44H6LdkW9j1V (0.319 BTC)
Tx Fee: 0.001 BTC
u
Bitcoin Unconfirmed Transacaon ( ) !!!
18

15. a
Alice
#12345
#21397
#81345
#22345
P2P
a
27
Alice
#12345
#21397
#81345
#22345
Mempool
27
#12345
#21397
#81345
#22345
Mempool
a
27
Alice
#12345
#21397
#81345
#22345
Mempool
a
27
Alice
#12345
#21397
#81345
#22345 Mempool
Bitcoin Software
1. Fullnode
2. Miner
19

16. 28
Block 1
...
Block 2
...
Block 3
...
Block 4
...
r和
Hash( Block 3 | TXs | nonce)
o e
區塊
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17. ;
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18. 圖片來自 https://bitsonblocks.net
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19. ;
Mike:
CAP , PACman
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20. S
• 讓 下 h t 讓
• 讓 下 gh t ⻑ 讓
• 讓 下 h fm中 ln
– ⽣全
– 中 le p
22
24

21. Proof of Work
• 博 多 下
• 多博 們 有 FaKRU J J T#
• ⼤ 的 # 他博 多
• ⽽ #
• 意 全 #
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和 沒 G
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22. 2D
• mlv~說 D bbUN#
– f v~說
• gukl ⽣全如 ⽣和 e如 #
– ⽅
24
r W 45 , el ⽣全
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23. SHA-2562(“abc” + “1”) =
158c09e82d88955d8a051934d12f74a53ea205743778165d1140a8903686e1ac
SHA-2562(“abc” + “2”) =
c72b0720d3302d76cd7b6b3f3dcb554d05f14fee8567cdda3ee8b7ff51e02015
.
.
.
SHA-2562(“abc” + “19”) =
005eR2ff3e871185b95bf7c8628e212d15a7d08c42235a381e06caa55856a0c
2D
• ⽽ 博 多 很分
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Hash(TXs+nonce) < number
00000000000000005b95bf7c8628e212d15a7d08c42235a381e06caa55856a0c
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24. SHA-2562(“abc” + “1”) =
158c09e82d88955d8a051934d12f74a53ea205743778165d1140a8903686e1ac
SHA-2562(“abc” + “2”) =
c72b0720d3302d76cd7b6b3f3dcb554d05f14fee8567cdda3ee8b7ff51e02015
.
.
.
SHA-2562(“abc” + “19”) =
005eR2ff3e871185b95bf7c8628e212d15a7d08c42235a381e06caa55856a0c
2D
• ⽽ 博 多 很分
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算力越強的人越有機會擁有寫帳權
但不代表掌握 70% 算力別人就沒機會，只是概率低
28

25. Timestamp = t
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26. 53
韩梅梅 李雷
0.319 BTC
Fees 0.001 BTC
0.32 BTC
1AnLpMkAmf7jy2BNkP3oYw1phzhNuLws7M (0.32 BTC) 1GJYiog3ato17SSTFCCdkZ44H6LdkW9j1V (0.319 BTC)
Tx Fee: 0.001 BTC
u
Bitcoin Unconfirmed Transacaon ( ) !!!
s(t) —> s(t+1)
30

27. (Bitcoin)
(Ethereum)
31

28. 61
scriptSig: <sig> <pubKey>
scriptPubKey: OP_DUP OP_HASH160 <pubKeyHash> OP_EQUALVERIFY OP_CHECKSIG
<sig>
a7db6ff121871c65a8924b8e40f160d385515ad7
<pubKey>
<pubKeyHash>
>”<
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29. Smart Contract Programming
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30. cWP
• )
– (
–
–
•
•
• (
–
–
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圖片來自 https://bitsonblocks.net
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31. State Machine over
Trust Machine
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32. Ethereum
• (VM states):
•
•
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33. Ethereum
• address: '0x556657e4691afe833b9c6978056706fbe095f4ad'
address: '0x556662d50c8789885fb5dc2263c332134fdf95c8'
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34. Ethereum
•
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35. Ethereum
• (Proxy, Controller)
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36. Ethereum
• (multi-sig) Proxy
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37. Ethereum
•
• Data
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38. Ethereum
• Oracle
• Feed Data & Proof
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39. Blockchain is the Internet's society,
and smart contracts are its laws.
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40. (DApps, Decentralized Applications)
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41. •
•
• (Clearing)
• KYC (Know Your Customer)
• AML (Anti-Money Laundering)
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42. Ripple
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43. 47

44. •
•
• (TPS, transaction per second)
• Bitcoin: 6 tx/s
• Ethereum: 7-15 tx/s
• gCoin: 240 tx/s
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45. , ,
49

46. 50

47. Relay
chain
Validator swarm
(each coloured by its
designated parachain)
Transaction
(submitted by
external actor)
Parachain
bridge
Virtual parachain
(e.g. Ethereum)
Parachain Parachain
queues and I/O
Propagated transactions
Block candidate submission
2nd order
Relay-chain
Parachain community
Account
Inbound transaction
Outbound transaction
Interchain transactions
(managed by validators)
Collator
Propagated block
Fisherman
Polkadot
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48. IPFS
InterPlanetary File System
• Content addressing
• Versioned
• P2P File System
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49. uPort
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50. 54

51. 55

52. COALA IP
Unify digital rights data management
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53. 57

54. IPLD
• InterPlanetary Linked Data
• Content-addressed identifiers for distributed
systems
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55. • ICO (Initial Coin Offering)
• Scam
59

56. • ( , )
• ,
• B2B, B2C, B2G
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57. 61

58. “Thanks for having me here!”
Q & A
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