De Blockchain:

Een reis door de mist

Lectoraat OptimaliserenKennisintensieve Bedrijfsprocessen

Martijn Zoet

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martijn.zoet@zuyd.nl(@mzoet)

“Working together to develop and spread new insights and solutions for practical problems.“

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(copyright http://www.bitchcoin.biz/)

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(copyright http://www.gnosis.pm/)

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(copyright http://www.marktplaats.nl/) (copyright https://openbazaar.org/)

6(copyright https://lazooz.net/)(copyright https://uber.com/)

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(copyright https://dropbox.com) (copyright https://storj.io)

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(copyright http://kyc-chain.com/)

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(copyright https://gem.co/health)

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all others must bring data

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The text on a Blockchaintransaction:

“In proof we trust”

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Ledger Capabilities Reference Model

5. Manage Consensus Mechanism

A. Record Management

2. Submit Transaction

B. Product Management

1.1 Design Business Rule Set

C. Identity Management

1. Manage Entities

D. Policy Management

2. Manage Participants

3. Manage Roles

1. Manage Access Control

2. Manage Privacy

3. Manage Consortium Rules

4. Manage Consensus Rules

1.2 Specify Business Rule Set

1.3 Verify Business Rule Set

1.4 Validate Business Rule Set

2. Deploy Smart Contract

4. Evaluate Smart Contract

5. Govern Smart Contract

3. Verify Transaction

4. Create Transaction Set

5. Submit Transaction Set

7. Accept Transaction Set

6. Reach Consensus

1. Create Transaction

E. Interledger Communication

1. Determine Interledger Address 2. Transfer Transaction 3. Convert Transaction

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1. Design Smart Contract

3. Execute Smart Contract

3.1 Data Sensing

3.2 Execute Business Rule Set

3.3 Trigger Action / Send Event

4. Manage Assets

(A) Distributed

Ledger

Smart Contracts

NetworkAssets

registers is for a specific

Policy

appliesdifferent

InterledgerProtocol

Roles

PrivacyConsensus Mechanism

has a degree ofhas ahas a

applies

applies

Building blocks of a distrubuted ledger

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De Blockchain uitgelegd zonder ICT

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Kluis 1

Het verwerken van transacties

(Explanation based on multiple sources: Gideon, 2006; Zoet, 2016; Oord, 2017)

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Kluis 1 Kluis 2

Sleutel van kluis 1

Het sluiten van de kluis

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Kluis 1 Kluis 2

Sleutel van kluis 1

Kluis 3

Sleutel van kluis 2

Kluis 4

Sleutel van kluis 3

Kluis 5

Sleutel van kluis 4

Een keten van kluizen

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“We need banking but we don’t need banks anymore.

Do you think someday we can open bank accounts or ask for loan without physically

have to come to the bank?”Bill Gates

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Kluis 1 Kluis 2

Sleutel van kluis 1

Kluis 3

Sleutel van kluis 2

Kluis 4

Sleutel van kluis 3

Kluis 5

Sleutel van kluis 4

Een keten van kluizen

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Kluis 1 Kluis 2

Sleutel van kluis 1

Kluis 3

Sleutel van kluis 2

Kluis 4

Sleutel van kluis 3

Kluis 5

Sleutel van kluis 4

Als er niemand vertrouwd wordt?

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Iedereen zijn eigen Blockchain

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Iedereen zijn eigen Blockchain

Andrew

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Fastow’en

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(Potentiele) Fraude

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(Potentiele) Fraude

Diederik

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Stapelen

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Evil Twins

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Een werkende Blockchain

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Een werkende Blockchain

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Een werkende Blockchain

(A) Distributed

LedgerMinen

Digitale Berichten

Blocks (Gehasthe) verzamelingen van transacties

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In welke situaties biedt de Blockchain toegevoegde waarde?

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Situatie 1

(ECB Occasional Paper 172, April 2016)

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Situatie 2

(Ripple, 2016)

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Situatie 3

(Greenspan, 2016)

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Situatie 4

(Greenspan, 2016)

(A) Distributed

Ledger

Smart Contracts

NetworkAssets

registers is for a specific

Policy

appliesdifferent

InterledgerProtocol

Roles

PrivacyConsensus Mechanism

has a degree ofhas ahas a

applies

applies

Vraag 1 – De Basis: Heeft u een database nodig?

(Questions are based on multiple sources: Gideon, 2006; Del Castillo, 2016; Rizzo, 2016; Zoet, 2016)

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(A) Distributed

Ledger

Smart Contracts

NetworkAssets

registers is for a specific

Policy

appliesdifferent

InterledgerProtocol

Roles

PrivacyConsensus Mechanism

has a degree ofhas ahas a

applies

applies

Vraag 2 – Het Netwerk: Schrijven er meerdere partijen in het netwerk naar de database?

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(A) Distributed

Ledger

Smart Contracts

NetworkAssets

registers is for a specific

Policy

appliesdifferent

InterledgerProtocol

Roles

PrivacyConsensus Mechanism

has a degree ofhas ahas a

applies

applies

Vraag 3 – Het Netwerk: Vertrouwen de partijen elkaar?

42

(A) Distributed

Ledger

Smart Contracts

NetworkAssets

registers is for a specific

Policy

appliesdifferent

InterledgerProtocol

Roles

PrivacyConsensus Mechanism

has a degree ofhas ahas a

applies

applies

Vraag 3 – Het Netwerk: Vertrouwen de partijen elkaar?

Is het een database die onder constante dreigingvan hackers staat?

Is de een grote kans tot vervalsing?

Is er een verhoogde kans op fraude?43

(A) Distributed

Ledger

Smart Contracts

NetworkAssets

registers is for a specific

Policy

appliesdifferent

InterledgerProtocol

Roles

PrivacyConsensus Mechanism

has a degree ofhas ahas a

applies

applies

Vraag 4 – Rollen: Is er een ‘trusted third party’

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(A) Distributed

Ledger

Smart Contracts

NetworkAssets

registers is for a specific

Policy

appliesdifferent

InterledgerProtocol

Roles

PrivacyConsensus Mechanism

has a degree ofhas ahas a

applies

applies

Vraag 5 – Assets: Is er ‘samenhang’ tussen de

transacties (assets)?

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Welcome to Distributed Ledgers

(A) Distributed

Ledger

Smart Contracts

NetworkAssets

registers is for a specific

Policy

appliesdifferent

InterledgerProtocol

Roles

PrivacyConsensus Mechanism

has a degree ofhas ahas a

applies

applies

Vraag 6 – Rollen: Wie valideren de transacties?

47

(A) Distributed

Ledger

Smart Contracts

NetworkAssets

registers is for a specific

Policy

appliesdifferent

InterledgerProtocol

Roles

PrivacyConsensus Mechanism

has a degree ofhas ahas a

applies

applies

Vraag 7 – Rollen en Consensus: Waarom vertrouwen de

personen/organisaties die valideren ?

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(A) Distributed

Ledger

Smart Contracts

NetworkAssets

registers is for a specific

Policy

appliesdifferent

InterledgerProtocol

Roles

PrivacyConsensus Mechanism

has a degree ofhas ahas a

applies

applies

Vraag 8 – Rollen en Assets: Wie staat er in de ‘echte’ wereld achter

het grootboek?

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Ledger Capabilities Reference Model

5. Manage Consensus Mechanism

A. Record Management

2. Submit Transaction

B. Product Management

1.1 Design Business Rule Set

C. Identity Management

1. Manage Entities

D. Policy Management

2. Manage Participants

3. Manage Roles

1. Manage Access Control

2. Manage Privacy

3. Manage Consortium Rules

4. Manage Consensus Rules

1.2 Specify Business Rule Set

1.3 Verify Business Rule Set

1.4 Validate Business Rule Set

2. Deploy Smart Contract

4. Evaluate Smart Contract

5. Govern Smart Contract

3. Verify Transaction

4. Create Transaction Set

5. Submit Transaction Set

7. Accept Transaction Set

6. Reach Consensus

1. Create Transaction

E. Interledger Communication

1. Determine Interledger Address 2. Transfer Transaction 3. Convert Transaction

51

1. Design Smart Contract

3. Execute Smart Contract

3.1 Data Sensing

3.2 Execute Business Rule Set

3.3 Trigger Action / Send Event

4. Manage Assets

(A) Distributed

Ledger

Smart Contracts

NetworkAssets

registers is for a specific

Policy

appliesdifferent

InterledgerProtocol

Roles

PrivacyConsensus Mechanism

has a degree ofhas ahas a

applies

applies

Building blocks of a distrubuted ledger

52

martijn.zoet@zuyd.nl(@mzoet)

“Working together to develop and spread new insights and solutions for practical problems.“

53

Slide Photo Artist/Contributor

2 Tower Nimishgogri

2 Classroom Edwin11

2 Medical Tubs SNRE

10 Front of a One Dollar Bill Sarah Corriher

11 Front of a one dollar bill Sarah Corriher

11 Back of a one dollar bill Sarah Corriher

12 Lego Block Ben Rimes

13 Kettle Waytru

16 Servers Paul Hammond

17 Myst Corin@ 2008

18 Woman in White Rennesi

18 Woman in Black PumpkinCat

18 Business Man Hamed Saber

18 Elderly Man Roger Blackwell

18 Safe (DesignContest – www.designcontest.com)

18 Written Note Dirk Haun

19 Woman in White Rennesi

54

This presentation used photos and artwork offered under the creative commons license “attribution generic” . None of the artists / licensors who created the work have endorsed me or my use of their work. The Creative Commons Photos can be found on http://www.flickr.com/. Photos and artwork listed with a URL can be found on the specified URL. Photos and artwork not listed are copyrighted

by the author or 3rd parties.

Slide Photo Artist/Contributor

19 Woman in Black PumpkinCat

19 Business Man Hamed Saber

19 Elderly Man Roger Blackwell

19 Safe (DesignContest – www.designcontest.com)

19 Written Note Dirk Haun

19 Safe Lock Oxygen Team IconSet (http://www.iconarchive.com/)

20,22,23 Woman in Black PumpkinCat

20,22,23,24,25,27,30,32,

33,34

Woman in White Rennesi

20,22,23,24,25,27,30,32,

33,34

Business Man Hamed Saber

20,22,23,24,25,27,30,32,

33,34

Elderly Man Roger Blackwell

20,22,23,24,25,27,30,32,

33,34

Safe (DesignContest – www.designcontest.com)

This presentation used photos and artwork offered under the creative commons license “attribution generic” . None of the artists / licensors who created the work have endorsed me or my use of their work. The Creative Commons Photos can be found on http://www.flickr.com/. Photos and artwork listed with a URL can be found on the specified URL. Photos and artwork not listed are copyrighted

by the author or 3rd parties.

55

Slide Photo Artist/Contributor

20,22,23,24,25,27,30,32,

33,34

Written Note Dirk Haun

20,22,23,24,25,27,30,32,

33,34

Safe Lock Oxygen Team IconSet (http://www.iconarchive.com/)

27,30,32,33,34

Calculator Oxygen Team IconSet (http://www.iconarchive.com/)

27,30,32,33,34

Calculator Oxygen Team IconSet (http://www.iconarchive.com/)

31 Puzzle Rob Pongsjapan

32, 33, 34 Box with Search Glass Oxygen Team IconSet (http://www.iconarchive.com/)

35 Myst Corin@ 2008

40 Database Oxygen Team IconSet (http://www.iconarchive.com/)

41 Pencils FHG Photo

42 Group of people Joi ITO

43 Group of people Joi ITO

44 Badge/Shield Banspy

45 Birds Sue Cantan

46 Boy in Door Georgie Pauwels 56

This presentation used photos and artwork offered under the creative commons license “attribution generic” . None of the artists / licensors who created the work have endorsed me or my use of their work. The Creative Commons Photos can be found on http://www.flickr.com/. Photos and artwork listed with a URL can be found on the specified URL. Photos and artwork not listed are copyrighted

by the author or 3rd parties.

Slide Photo Artist/Contributor

47 Business Woman Victor 1558

48 Business Woman Victor 1558

49 Soldiers Usasoc News Service

50 Kettle Waytru

53 Tower Nimishgogri

53 Classroom Edwin11

53 Medical Tubs SNRE

57

This presentation used photos and artwork offered under the creative commons license “attribution generic” . None of the artists / licensors who created the work have endorsed me or my use of their work. The Creative Commons Photos can be found on http://www.flickr.com/. Photos and artwork listed with a URL can be found on the specified URL. Photos and artwork not listed are copyrighted

by the author or 3rd parties.