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BlockChain. 블록체인 이해와 적용사례" Oct 2018 ㈜ 아이콘루프

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Page 1: BlockChain. · 2018-10-29 · 5. 'Blockchain Will Change Everything About Business Transactions' 6. 'Cryptocurrencies Are Volatile, So Blockchain Must Not Be Reliable' 7. 'Cryptocurrencies

BlockChain.

“블록체인 이해와 적용사례"

Oct 2018

㈜ 아이콘루프

Page 2: BlockChain. · 2018-10-29 · 5. 'Blockchain Will Change Everything About Business Transactions' 6. 'Cryptocurrencies Are Volatile, So Blockchain Must Not Be Reliable' 7. 'Cryptocurrencies

Copyright@ 2017 DAYLI Intelligence All rights reserved.2

Private Coin 지급결제 수단 적용국내 2번째 ICO , 최대 모집금액 , 국내최초 상장,블록체인전문회사 최대 자산 규모

Blockchain ISP 관세청 개인통관 PJ 보험사 업무 Smart Contract 를통한 자동청구

서울시 블록체인 실증사업

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Copyright@ 2017 DAYLI Intelligence All rights reserved.3

現. ㈜데일리인텔리전스 블록체인 사업개발 총괄㈜더루프 사업개발총괄ICON Foundation 임원 (스위스 쥬크)

한국블록체인산업협회 (자문위원)

오픈블록체인산업협회 (자문위원)

CISAISO 27001 선임감사사

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Copyright@ 2017 DAYLI Intelligence All rights reserved.

Contents

I. Why Blockchain

II. Blockchain 에 대한 오해

III. 블록체인의 Value

IV. 구축 방법 및 적용사례

Page 5: BlockChain. · 2018-10-29 · 5. 'Blockchain Will Change Everything About Business Transactions' 6. 'Cryptocurrencies Are Volatile, So Blockchain Must Not Be Reliable' 7. 'Cryptocurrencies

Copyright@ 2017 DAYLI Intelligence All rights reserved.

What is needed is an

electronic payment system

based on cryptographic

proof instead of trust,

allowing any two willing

parties to transact directly

with each other without

the need for a trusted

third party.

Page 6: BlockChain. · 2018-10-29 · 5. 'Blockchain Will Change Everything About Business Transactions' 6. 'Cryptocurrencies Are Volatile, So Blockchain Must Not Be Reliable' 7. 'Cryptocurrencies

Copyright@ 2017 DAYLI Intelligence All rights reserved.6

Financial services will be transformed by “blockchain technology with

expectations of at least 10% of the global GDP being stored on Blockchain

platforms by 2025.

2016

시장규모

$8T

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Copyright@ 2017 DAYLI Intelligence All rights reserved.7

2016

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Copyright@ 2017 DAYLI Intelligence All rights reserved.8

June. Y17

$627BDec30,17

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Digital TransformationWhy not yet paperless?

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The latest

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Copyright@ 2017 DAYLI Intelligence All rights reserved.18

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Copyright@ 2017 DAYLI Intelligence All rights reserved.19

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Copyright@ 2017 DAYLI Intelligence All rights reserved.21

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Copyright@ 2017 DAYLI Intelligence All rights reserved.22

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Copyright@ 2017 DAYLI Intelligence All rights reserved.23

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Copyright@ 2017 DAYLI Intelligence All rights reserved.24

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Copyright@ 2017 DAYLI Intelligence All rights reserved.26

[Reference]

www.coinmarketcap.comwww.blockchain.infohttps://www.coursera.org/learn/cryptocurrencywww.coindesk.com

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Copyright@ 2017 DAYLI Intelligence All rights reserved.

Contents

I. Why Blockchain

II. Blockchain 에 대한 오해

III. 블록체인의 Value

IV. 구축 방법 및 적용사례

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Copyright@ 2017 DAYLI Intelligence All rights reserved.28

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Copyright@ 2017 DAYLI Intelligence All rights reserved.

1. 'Blockchain Equals Bitcoin'

2. 'Blockchain's Only Application Is Cryptocurrency'

3. 'Information On Blockchain Activity Isn't Publicly Available'

4. 'Crypto Transactions Are Anonymous'

5. 'Blockchain Will Change Everything About Business Transactions'

6. 'Cryptocurrencies Are Volatile, So Blockchain Must Not Be Reliable'

7. 'Cryptocurrencies Are Best For Criminals'

8. 'Blockchain Is Just A Storage Mechanism'

9. 'Cryptocurrency And Blockchain Are For Technology And Finance People Only'

10. 'Tokens And Coins Are The Same Thing'

11. 'Cryptocurrency Is Fundamentally Different From Other Currencies'

30

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Copyright@ 2017 DAYLI Intelligence All rights reserved.

[논점 & 오해]

1.법정화폐가 될 수 없다 ?2.블록체인에서 인센티브(암호화폐)없이 운영이 가능?3.사용하는데 보셨어요 ? 아무데도 쓸데가 없다 ?4.코인이 왜 이렇게 많은가 ?5.블록체인의 보안성이 아직 불안하다 ? 6.비트코인은 해쉬 난이도가 증가에 따라 채굴비용이 증가하여결국에는 채굴자가 떠나서 자동으로 비트코인은 붕괴된다?

7.1세대 2세대 3세대 블록체인이 나오면서 1세대 블록체인은소멸될 것이다

8.비트코인 결제 처리 속도 ? Vs 신용카드

32

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Copyright@ 2017 DAYLI Intelligence All rights reserved.33

비트코인 => 법정화폐 ?

서울대 김소영 교수

“중앙은행이 직접 암호화폐를발행하면 안정적인 가치를유지하려고 할 것이기 때문에현재 다른 암호화폐들의 단점인투기적 성격이 없어질 것,

한국은행이 장기적으로는(암호화폐를) 발행할 가능성이있다

홍익대 홍기훈 교수“(한국은행이 암호화폐를

발행하는 게) 불가능할 이유는없지만 그러기 위해서는블록체인이 현재 우리가 가진기술보다 우월함을 보여주어야한다. 이는 규제당국의 역할이아니라 블록체인산업과연구자들의 몫이다.”

[출처: 중앙일보]

중앙은행, Private Blockchain 을 기술로서 활용

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인센티브 없이 운영이 가능하다?

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코인이 왜 이렇게 많죠 ?

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사용하는데 보셨어요 ?

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Copyright@ 2017 DAYLI Intelligence All rights reserved.37

블록체인 보안성이 불안해서 적용하지 못한다 ?

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마이닝 난이도상승으로 자체붕괴된다.

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Copyright@ 2017 DAYLI Intelligence All rights reserved.

What is needed is an

electronic payment system

based on cryptographic

proof instead of trust,

allowing any two willing

parties to transact directly

with each other without

the need for a trusted

third party.

Page 40: BlockChain. · 2018-10-29 · 5. 'Blockchain Will Change Everything About Business Transactions' 6. 'Cryptocurrencies Are Volatile, So Blockchain Must Not Be Reliable' 7. 'Cryptocurrencies

Copyright@ 2017 DAYLI Intelligence All rights reserved.

블록체인 기술

Not RevolutionBut Evolution

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• Cryptography (Public Key, Private Key)

• SHA-256 Hash Function

• Proof of Work → ‘Mining’

• Peer-to-Peer Network → ‘Distributed Ledger’

Security

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Copyright@ 2017 DAYLI Intelligence All rights reserved.

Get = x 12.5Down to 12.5 and lower

Block = Page

= Record of Transaction= around 10 minutes

Block #101

Hash Code of Block #100

Transactions which were occured after Block #100

Nonce(4byte)

A B 160C D 250E F 370

Like: 0000b3458d85b1e3c4b83823ab685fa2

Like: 32

Hash Code of Block #101 = 0000b3458d85b1e3c4b83821e3c4b838

Find this # = Mining

Administrative info.

(SHA-256 hash calculator)

Block.Head(80byte)

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Copyright@ 2017 DAYLI Intelligence All rights reserved.

Block + Chain

Body : 1000 ~2000ts

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Mining(PoW)

Blockchain.info

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Copyright@ 2017 DAYLI Intelligence All rights reserved.

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Contents

I. Why Blockchain

II. Blockchain 에 대한 오해

III. 블록체인의 Value

IV. 적용사례

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Why Blockchain ?

➢ 확실한 작성자

➢ 합의에 의한 블록생성

➢ 생성된 데이터 변조불가

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BlockChain & Info Security

48

CConfidentiality

IIntegrity

AAvailability

PKI

ConsensusDistributed

Ledger

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Copyright@ 2017 DAYLI Intelligence All rights reserved.49

Fat Protocol

https://ko.wix.com/explore/websites

[ Reference ]https://www.youtube.com/watch?v=ZE2HxTmxfrIhttps://www.youtube.com/watch?v=FkeLDPZ-v8g

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Why Blockchain ?

“신분 뿐만 아니라 데이터의 무결성을 매개자의 중개또는 신뢰 보장이 없이도 신뢰할 수 있다는 점은

인터넷이라는 익명성 네트워크에서 더 많은 가능성과기회를 창출.”

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Past,Present,Future(Blockchain)

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53

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Survey-Benefit of Blockchain

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Contents

I. Why Blockchain

II. Blockchain 에 대한 오해

III. 블록체인의 Value

IV. 적용사례

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Use Case

I. 금융투자업권 공인인증서 대체 ‘블록체인 공동인증서'

II. K생명 , SmartContract를 이용한 자동청구시스템

III. 계약플랫폼 : Chain Sign (SmartContract 기반 -보험 약정서)

IV. 지불결제 시스템 ‘uCoin , 위비코인 ’,지방자치 단체, 모바일 상품권

V. 해외사례 ( 은행 & 혁신모델 )

56

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인증기관

공인인증기관,’제3자의 3자’

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블록체인의 특성과 인증서비스 적용안

59

블록체인 고유의 특성을 활용하여 공인인증기관 없는 금융투자업권 공동인증 서비스망 구성

Cryptography

Consensus

Distribute

Ledger(database)

Programmable(Smart

contract)

블록체인의 특성 인증서비스 활용

암호기술을 이용한 정보의 변조 방지

합의를 통한 정보의생성/저장과정 검증

정보의 실시간 분산(공유)으로Peer간 동일한 정보망 구성

항상 최신 상태가 유지되는변조 불가능한 정보

저장된 정보를 활용하여 모든 Peer가동시에 처리하는 시스템

금투업권 공동 인증서의 발급/해지/정지 등 모든 거래(트랜잭션)에 암호기술을 적용하여

공동인증 정보를 안전하게 관리

허가된 참여사가 생성한 정보인지, 약속된 방식으로 생성했는지 모든 참여사가 합의

인증서의 상태정보가 실시간 공유되므로, 고객은 별도의 추가 등록절차 없이전 참여사에서 인증서 사용가능

각 참여사에 저장된 인증서 정보만으로인증서 유효성확인 가능

스마트 컨트랙트를 통해인증서 생성, 해지, 효력 정지 등

모든 프로세스 자동화

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공동인증체계 비교

60

공인인증체계와 사설인증체계의 보안적/편의적 장점을 충분히 활용한 인증체계 구축

발급자(서명자)

거래가능 범위

인증서/개인키 저장 위치

인증서 유효성확인

개인키 접근 방식

공인인증서

공인인증기관(금융결제원, 코스콤 등)

증권거래 및 보험거래전자정부민원서비스

주로 디바이스의정해진 위치(NPKI폴더)

OCSP 이용,비실시간 CRL

폐기목록 검증 필요

복잡한 PW 방식(생체인증 추진 중)

(개별) 사설인증서

개별 금융기관

발행기관 단독 사용

자체 정책으로 결정(안전한 저장공간

선택 가능)

내부 구축된인증서 목록 활용

생체, PIN, 패턴 등다양한 방식 가능

금투업권 공동인증서

블록체인 참여사(합의 / 공동서명)

참여사 전체(참여기관 확대에 따라

사용성 ↑)

물리적으로 분리된안전한 저장공간

블록체인에 기록된인증서 정보 활용

생체, PIN, 복잡한비밀번호 등 다양한

방식 가능

S S

SW

W

W

S

W

WS Strong point Weak point

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공동인증 VS 공인인증 비교

61

각종 편의적 보안적 요소에서 대체로 공인인증보다 우위에 있거나 비슷함

구분 category 공동인증 비교 공인인증(증권전용)

사용가능 기관 편의 블록체인 참여사 <온라인증권거래 및 보험거래

전자정부민원서비스

타기관 등록절차 편의 간단한 고객확인 후 가능 >계좌확인, ARS인증, OTP인증 등

복잡한 절차

발급절차 편의 공인인증과 동일한 프로세스로 진행 =본인확인

(계좌번호, 계좌비번 등 확인)

부인방지 보안 가능 = 가능

개인키저장공간

보안TEE 또는 앱 영역(모든 단말기 가능) > 지정된 경로(파일)

개인키접근가능여부

보안 불가 > 가능

유효기간 정책 편의/보안 3년 > 1년

개인키 암호화 방법 편의/보안 PIN/PW/BIO 등 다양 > PW

개인키 암호 오류대응정책 편의/보안

인증 app이 비밀번호 통합 관리함→ 사용 시도한 금융기관에 상관 없이

총 오류횟수가 임계치에 도달하면인증서 사용 불가처리

> 개별 금융기관에서 관리

인증서 유효성 확인Process

편의 각 사의 Node에서 확인 가능 >외부기관과 I/F 필요(OCSP)CRL 폐기목록 확인(비실시간)

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인증서 발급I. 공동인증(CHAIN ID) 프로세스

각 증권사를 통해 인증서 발급 요청 후 인증서 발급에 필요한 정보를 기반으로 거래를 생성하고 이에 대한Smart Contract를 실행하여 인증서 생성

A사Node

D사Node

[Leader Peer]

⑦ 신규블록생성

⑪ 인증서등록/폐기

목록update

[목록]

⑪ 인증서등록/폐기

목록update

[목록]

⑪ 인증서등록/폐기

목록update

[목록]

⑪ 인증서등록/폐기

목록update

[목록]

Blockchain 구동

Blockchain 기록

B사Node

C사Node

⑩ smart contract를 통해 인증서 발급

인증서 관리 SCORE*

⑥ leader peer 에게 인증정보 및 공개키 전송

⑧ 검증요청 및 결과전송(합의 Algorithm)

⑨ 신규블록추가

A사Legacy

(MTS/HTS)

① 본인확인

② 개인키/공개키 생성

③ 인증서 발급 요청

⑤ 인증서 발급 요청(블록체인 거래 발생)

⑫ 발급결과 전송 (인증서)

④ 인증서 발급거래 생성 (공개키)

⑬ 인증서

* SCORE (Smart Contract on Reliable Environment)블록체인 엔진(loopchain) 상에서 실행되는 Smart Contract로서분리된 저장소를 통한 등록, 배포 및 버전 관리를 제공하여 다양한 업무 구현 가능

62

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①A사 MTS 로그인 (공동인증) ②CHAIN ID 실행 (연동) ③공동인증서 발급요청 ④계좌정보 입력

⑤ARS 전화인증 ⑥OTP 인증 ⑦인증서 등록완료 ⑧개인키 등록 신청

인증서 발급 (스크린샷)

I. 공동인증(CHAIN ID) 프로세스

63

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⑨PIN번호 등록 ⑩지문 등록 ⑪개인키 등록 ⑫발급 및 등록 완료

인증서 발급 (스크린샷)

I. 공동인증(CHAIN ID) 프로세스

64

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Use Case

I. 금융투자업권 공인인증서 대체 ‘블록체인 공동인증서'

II. K생명 , SmartContract를 이용한 자동청구시스템

III. 계약플랫폼 : Chain Sign (SmartContract 기반 -보험 약정서)

IV. 지불결제 시스템 ‘uCoin , 위비코인 ’,지방자치 단체, 모바일 상품권

V. 해외사례 ( 은행 & 혁신모델 )

65

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Case : K생명. 스마트청구

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Pain Point❖ 소액보험금 미청구 건 51.4% (국정감사)

Case : K생명. 스마트청구

67

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Case : K생명. 스마트청구타권역간에 사용된 최초의 블록체인기반 공동인증 ( 보험 <> 병원)

68

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Case : K생명. 스마트청구

▪ Service Flow

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Case : K생명. 스마트청구

▪ Service Flow

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서류(Img &

Meta data)

접수장표접수장표

API

청구장표

1

23

서류(Img &

Meta data)

SmartContract(해당접수

장표로 전송)

서류(PDF)

AI Scan(Meta data생성)

Legacy System

신규System

Case : K생명.확대

심사 지급

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Use Case

I. 금융투자업권 공인인증서 대체 ‘블록체인 공동인증서'

II. K생명 , SmartContract를 이용한 자동청구시스템

III. 계약플랫폼 : Chain Sign (SmartContract 기반 -보험 약정서)

IV. 지불결제 시스템 ‘uCoin , 위비코인 ’,지방자치 단체, 모바일 상품권

V. 해외사례 ( 은행 & 혁신모델 )

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Case : 계약플렛폼

www.chainsign.co.kr

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서울핀테크랩 개소식

75

Pain Point

1.서울시 첨단 핀테크도시의 이미지2.다자간의 계약 , 대표자를 설정하기가 곤란시장님 31번의 날인이 필요

Blockchain기반의전자계약서

"블록체인, 공증을 대체하다"

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서울핀테크랩 개소식

76

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Case : 계약▪ 미래발전모델

❖ ‘공증’ 기능을 가진 전자계약❖ 조건에 따른 자동실행❖ ‘ Smart Contract ‘를 이용한 계약의 조건에 따라 계약 이행❖ ‘ Smart Contract ‘를 활용 , ESCROW 기능 제공❖ ‘ On chain payment’를 이용한 계약의 자동집행❖ 사회적인 문제인 연쇄부도 방지❖ 계약과 연계된 다양한 금융연계 간소화

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Use Case

I. 금융투자업권 공인인증서 대체 ‘블록체인 공동인증서'

II. K생명 , SmartContract를 이용한 자동청구시스템

III. 계약플랫폼 : Chain Sign

IV. 지불결제 시스템 ‘uCoin , 위비코인 ’,지방자치 단체- 모바일 상품권

V. 기타 : 물류 , 투표시스템

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Case : 지불결제.대학화폐 (uCoin),지자체 모바일상품권

Refer: NIA workshop 2017

81

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Benefit

Cash flow , Local economy promotion

Convenience, Easy Transfer,

Extra bonus

No credit card fee , POS / VAN lessDaily settlement

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Case : 지불 결제 vs 카드

카드 ( Middle man )

카드.consumer결재

VAN 카드사은행 (Merchant)

은행 (Consumer)

As-IS

To-Be

사용자 Merchant

“1.8~2%, 3~5day”

Pier 2 Pier SmartPhone을 이용한모바일 POS

은행 은행

복합결제(포인트+카드)역방향결제(보안성)

전자연수증분할결재(n페이)

83

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< ‘서강코인’ PoC 현장 >

서비스 화면

84

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지방자치단체 전자상품권 필요성

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Internet

Node은행 지자체

관리서버- m상품권 발행 , 폐기- 사용현황 모니터링대학

참가상점연합

온라인몰

서비스서버

DMZ

F/W

저장정보- 인증서 ID - 전자지갑- 트랜잭션정보

저장정보- 전자지갑- 개인키

지자체 모바일상품권 시스템 구성도

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혜택지역경제활성화- 자금의 관외유출 방지- Commerce platform 연계 시 시너지 극대화

모바일 결제-편리성, 보안성, 보너스

수익률 상승- 지금결제에 대한 수수료 ‘0에 수렴‘

Daily settlement – 운전자금 감소효과

안정적 수신고-이탈률이 낮은 자금확보

계좌증가 – 가맹점 확대 ( VAN less )

상품개발- micro credit상품 (50만원이하)

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Swift .FiatHigh rate fee ,

long settlement time

Direct , low rate , near real time

Cryptocurrency

(Pegging $)

Exch

ange

(Loca

l curre

ncy)

Exch

ange

(Loca

l curre

ncy)

Swift 대체

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Case : 지불

▪ 미래발전모델

❖ 모바일폰을 이용한 간편결제 확산❖ ‘지불결제 중간자 대체 (카드 , VAN , POS system 등) ❖ 복합결제 ( 포인터 지불 → 잔금결제 →포인터적립) ❖ 특정영역에서 블록체인기반 Private Coin 사용활성화

ex. 지역화폐, 복지코인, 교통코인 등❖ 법정화폐는 Private Coin 의 정산에 활용

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Use Case

I. 금융투자업권 공인인증서 대체 ‘블록체인 공동인증서'

II. K생명 , SmartContract를 이용한 자동청구시스템

III. 계약플랫폼 : Chain Sign (SmartContract 기반 -은행 약정서)

IV. 지불결제 시스템 ‘uCoin , 위비코인 ’,지방자치 단체- 모바일 상품권

V. 기타 – 물류시스템 & 투표시스템

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Pain Point : 물류

◆ 신뢰가 부족한 부분

❖ 변질가능한 제품의 이동시 변질(식자재,단체급식 –병원,학교 등 )

❖ 고가제품의 물류상의 파손( 미술품, 혈액,장기,의약품 등 )

◆ 복잡한 서류 절차

◆ 다수의 참가자(Cross-board)

❖ 프로세싱 시간 지연

❖ 파편화된 정보, 처리시간 과 비용증가

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물류 & Blockchain

Blockchain in the SCM & Logistics

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물류 & Blockchain

❖ 변질가능한 제품의 이동시 변질(식자재,단체급식 –병원,학교 등 )

❖ 고가제품의 물류상의 파손( 미술품, 혈액,장기,의약품 등 )

❖ 프로세싱 시간 지연

❖ 파편화된 정보, 처리시간 과 비용증가

❖ Cold Chain 정보공유 (온도/습도 )

❖ Smart Contract 를 통한업무 자동화 ( RPA 기능 )

❖ 진동센스 정보공유 (진동/조도/GPS )

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Copyright@ 2017 DAYLI Intelligence All rights reserved.

물류 & Blockchain ( 다품종 소량 화물 )

관세청 “지능형 개인통관서비스 구축 플렛폼 시범사업 “

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Copyright@ 2017 DAYLI Intelligence All rights reserved.

물류 & Blockchain ( 투명성, 추적가능성 확보)

As Is To Be

Blo

ckch

ain

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client WAS

TX

RDB

SQL

JSON

Blockchain

Application

OLAP (결과비교 ) WA

S

Polling

기존

신규

기존 투표시스템에 ‘블록체인’을 더하다

Pain Point : 투표에 대한 ‘공정성’과 ‘투명성’이 누락되어 있음요구사항 : 기존의 시스템을 그대로 두고 블록체인을 이용한 공정성 부분만 추가

2

1

1

[범례]1. 선거결과에 대해서 노드 → RDB로 Polling2. 기존 RDB와 블록체인 RDB 와 결과 비교

if yes . 결과 동일 처리else. 각투표 결과 검색 SmartContract 작동 검증

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Thank you

L 서울시 영등포구 국제금융로 10 서울국제금융센터(Three IFC) 19층

T +82. 2 6105. 8100

F +82. 2 6105. 8122

DAYLI Intelligence www.daylifg.com

Presenter 블록체인사업본부김항진 이사 / 본부장[email protected]@[email protected]

‘Closed Question’ (‘예,아니오’로 답할 수 있는 질문)

으로 부탁드립니다. ^^