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( ) ([email protected])
SFC ( )
CSO (Chief Science Officer)
1988∼1997 ( )
1993 M.Eng (CS)
2006 ( )
SFC
15 P2P
⇒
– 2016-09-30 – p.2/16
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– 2016-09-30 – p.3/16
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( ) ( )
← (TX)
(TX) ← ( : )
( )
“A timestamp server works by taking a hash of a block of
items to be timestamped and widely publishing the hash,
such as in a newspaper or Usenet post”
“To implement a distributed timestamp server on a
peer-to-peer basis, we will need to use a proof-of-work
system similar to Adam Back’s Hashcash, rather than
newspaper or Usenet posts”
– Satoshi Nakamoto (2008)
– 2016-09-30 – p.4/16
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( )
1. 10
( )
2.
3.
1
– 2016-09-30 – p.5/16
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:
End-to-End
( ) ( )
– 2016-09-30 – p.6/16
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– 2016-09-30 – p.7/16
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(Hyperledger )
( )
( )
( )
IoT
/
/ ( )
– 2016-09-30 – p.8/16
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:
. . .
: Proof of Existence
( )
:
– 2016-09-30 – p.9/16
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vs.
– 2016-09-30 – p.10/16
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– 2016-09-30 – p.11/16
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The DAO ( )
The DAO
Split ( )
360 ETH (50∼60 ) (6/17)
( )
( ; )
(7/20 )
– 2016-09-30 – p.12/16
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:
⇒
– 2016-09-30 – p.13/16
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3
1. ( )
⇒ ( )
2.
( )
⇒
3. ( )
TX
⇒
– 2016-09-30 – p.14/16
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–
Satoshi Nakamoto
⇓
←
⇑
← “OP_RETURN”
⇒
– 2016-09-30 – p.15/16
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( )
⇒
( )
– 2016-09-30 – p.16/16