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Blockchain: Een reis door de mist

The document discusses distributed ledger technology and blockchains. It begins by asking why blockchains exist and explores some of the components that make up distributed ledgers, including distributed networks, smart contracts, roles, and consensus mechanisms. It then examines situations where blockchains may provide added value, such as when multiple distrusting parties need to write to a shared database, and where they may not provide value, such as in situations without a distributed network or where parties fully trust each other. The document aims to provide an overview of blockchains and distributed ledgers and discuss both their potential uses and limitations.

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De Blockchain: Een reis door de mist Lectoraat Optimaliseren Kennisintensieve Bedrijfsprocessen Martijn Zoet 1
martijn.zoet@zuyd.nl (@mzoet) “Working together to develop and spread new insights and solutions for practical problems.“ 2
Gegevens Beslissingen Processen Observatie (Data) Beloning Antwoord (Data) Communicatie Informatie Technologie Onderzoekslijn2 Onderzoekslijn1 Onderzoekslijn3 3 Synthetische bedrijfsregels Analytische bedrijfsregels Synthetische bedrijfsregels Analytische bedrijfsregels
4
5 Waarom bestaat de blockchain?
6 (copyright http://www.bitchcoin.biz/)
7
8 all others must bring data
9 The text on a Blockchain transaction: “In proof we trust”
10 Satoshi Nakamoto
11 Waarom worden mensen enthousiast van de Blockchain?
12 (copyright https://www.gnosis.pm/)
13 (copyright http://counterparty.io/)
14 (copyright https://nxt.org/)
15 (copyright https://www.bigchaindb.com/)
16 (copyright https://ipfs.io/#why)
17 (copyright https://www.bitstamp.net/)
18 (copyright https://openbazaar.org/)
19 (copyright http://www.evernym.com/)
20 (copyright http://2way.io/)
21 (copyright https://slock.it/)
22 (copyright https://gem.co/health)
23 (copyright http://www.pointnurse.com/)
24 (copyright http://kyc-chain.com/)
25 (copyright http://uniquid.com/)
26
27 Vanuit een traditioneel oogpunt
28 Vanuit een traditioneel oogpunt (ECB Occasional Paper 172, April 2016)
29 Vanuit een ‘filosofisch’ oogpunt (copyright https://daohub.org/)
DAB DAG DAS DAO 30 Vanuit een ‘filosofisch’ oogpunt
DAB DAG DAS DAO Decentralized Autonomous Organization Decentralized Autonomous Business Unit Decentralized Autonomous Society Decentralized Autonomous Government 31 Vanuit een ‘filosofisch’ oogpunt
32 Vanuit een het ‘gehypet’ oogpunt Welkom op het gratis geld ehhh…………, ik bedoel Blockchain feestje
33 Uit welke onderdelen bestaat een Distributed Ledger?
De absolute basis 34
(A) Distributed Ledger Smart Contracts NetworkAssets registers is for a specific Policy applies different Interledger Protocol Roles PrivacyConsensus Mechanism has a degree ofhas ahas a applies applies Bouwblokken: gedistribueerd grootboek 35
(A) Distributed Ledger Smart Contracts NetworkAssets registers is for a specific Policy applies different Interledger Protocol Roles PrivacyConsensus Mechanism has a degree ofhas ahas a applies applies 1. Financial, Payments 1. People 2. Organizations 3. Institutions 4. Countries 1. Accountantholders 2. Miners (Validators) 1. Open 1. None 1. Very Very Simple Simple Contracts (Not intended for) 1. In Place (to detailed to described in this picture) 1. Proof of Work De BitCoin 36
(A) Distributed Ledger Smart Contracts NetworkAssets registers is for a specific Policy applies different Interledger Protocol Roles PrivacyConsensus Mechanism has a degree ofhas ahas a applies applies 1. Financial, Payments 1. Organizations 2. People 1. Customers 2. Merchants 3. Gateways 4. Marketmaker 1. Zero Knowledge 1. Available 1. Multiple Languages Supported 1. Only Customers of the organization (the rest to detailed to describe) 1. Federated Consensus Een Private Oplossing 37
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 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 38
39 In welke situaties biedt de Blockchain toegevoegde waarde?
(A) Distributed Ledger Smart Contracts NetworkAssets registers is for a specific Policy applies different Interledger Protocol 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) 40
(A) Distributed Ledger Smart Contracts NetworkAssets registers is for a specific Policy applies different Interledger Protocol 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? 41
(A) Distributed Ledger Smart Contracts NetworkAssets registers is for a specific Policy applies different Interledger Protocol 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 applies different Interledger Protocol 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 dreiging van 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 applies different Interledger Protocol Roles PrivacyConsensus Mechanism has a degree ofhas ahas a applies applies Vraag 4 – Rollen: Is er een ‘trusted third party’ 44
(A) Distributed Ledger Smart Contracts NetworkAssets registers is for a specific Policy applies different Interledger Protocol Roles PrivacyConsensus Mechanism has a degree ofhas ahas a applies applies Vraag 5 – Assets: Is er ‘samenhang’ tussen de transacties (assets)? 45
46 Welcome to Distributed Ledgers
(A) Distributed Ledger Smart Contracts NetworkAssets registers is for a specific Policy applies different Interledger Protocol 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 applies different Interledger Protocol Roles PrivacyConsensus Mechanism has a degree ofhas ahas a applies applies Vraag 7 – Rollen en Consensus: Waarom vertrouwen de personen/organisaties die valideren ? 48
(A) Distributed Ledger Smart Contracts NetworkAssets registers is for a specific Policy applies different Interledger Protocol 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? 49
50 (Levine, 2016)
“Complicating matters is that unlike traditional corporations Jetzsch’s open- source codebase was written on the ethereum blockchain and free for anyone to use. No one has ever publicly claimed responsibility for the launch of this particular DAO that has come to be known simply as "The DAO", and no single person or group exists with the explicit authority or mandate to rectify the situation.” “This means the task of cleaning up the mess has fallen largely to altruistic community members. Initially, two solutions were considered, though this has become more complex in recent weeks.” 51 Characteristics Use Cases DL (9/9) (Michael del Castillo, 2016)
(A) Distributed Ledger Smart Contracts NetworkAssets registers is for a specific Policy applies different Interledger Protocol Roles PrivacyConsensus Mechanism has a degree ofhas ahas a applies applies Verschillende Configuraties 52
(A) Distributed Ledger Smart Contracts NetworkAssets registers is for a specific Policy applies different Interledger Protocol Roles PrivacyConsensus Mechanism has a degree ofhas ahas a applies applies 1. Financial, Payments 1. People 2. Organizations 3. Institutions 4. Countries 1. Accountantholders 2. Miners (Validators) 1. Open 1. None 1. Very Very Simple Simple Contracts (Not intended for) 1. In Place (to detailed to described in this picture) 1. Proof of Work De BitCoin 53
(A) Distributed Ledger Smart Contracts NetworkAssets registers is for a specific Policy applies different Interledger Protocol Roles PrivacyConsensus Mechanism has a degree ofhas ahas a applies applies 1. Financial, Payments 1. Organizations 2. People 1. Customers 2. Merchants 3. Gateways 4. Marketmaker 1. Zero Knowledge 1. Available 1. Multiple Languages Supported 1. Only Customers of the organization (the rest to detailed to describe) 1. Federated Consensus Een Private Oplossing 54
55 In welke situaties biedt de Blockchain geen toegevoegde waarde?
(A) Distributed Ledger Smart Contracts NetworkAssets registers is for a specific Policy applies different Interledger Protocol Roles PrivacyConsensus Mechanism has a degree ofhas ahas a applies applies Vraag 3 – Het Netwerk: Vertrouwen de partijen elkaar? 56
(A) Distributed Ledger Smart Contracts NetworkAssets registers is for a specific Policy applies different Interledger Protocol Roles PrivacyConsensus Mechanism has a degree ofhas ahas a applies applies 57
(A) Distributed Ledger Smart Contracts NetworkAssets registers is for a specific Policy applies different Interledger Protocol Roles Privacy has a degree ofhas ahas a applies applies 58
59 Wat is de grootste onzin en wat zijn de grootste leugens rond Blockchain?
60
61 Waarom bestaat de blockchain? Wat is de grootste onzin en wat zijn de grootste leugens rond Blockchain? In welke situaties biedt de Blockchain toegevoegde w Uit welke onderdelen bestaat een Distributed Ledger? In welke situaties biedt de Blockchain geen toegevoegde waarde?
martijn.zoet@zuyd.nl (@mzoet) “Working together to develop and spread new insights and solutions for practical problems.“ 62
Slide Photo Artist/Contributor 2 Tower Nimishgogri 2 Classroom Edwin11 2 Medical Tubs SNRE 3 Judge Aha-Soft (www.aha-software.com) 3 Police Agent Aha-Soft (www.aha-software.com) 3 Nurse Icons-Land (www.icons-land.com) 3 Writer Icons-Land (www.icons-land.com) 3 Swimmer Icons-Land (www.icons-land.com) 3 Law Book Lawyer Wordpress Themes (www.lawyerwordpresstheme.com) 3 Briefcase Lawyer Wordpress Themes (www.lawyerwordpresstheme.com) 3 Robot Iconka.com (ww.iconka.com) 3 Business men Icons-Land (www.icons-land.com) 3 Business Women Icons-Land (www.icons-land.com) 4 Myst Corin@ 2008 5 Myst Corin@ 2008 7 Front of a One Dollar Bill Sarah Corriher 8 Front of a one dollar bill Sarah Corriher 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 not listed are copyrighted by the author or 3rd parties.
Slide Photo Artist/Contributor 8 Back of a one dollar bill Sarah Corriher 9 Lego Block Ben Rimes 10 Guy in the left corner David Goehring 10 Business Man Hamed Saber 10 Child Bilal Kamoon 10 Guy with sunglasses Hamed Saber 10 Woman in green Pedro Simoes 10 Elderly Women Twenty Mind Something 10 Men in White Shirt Jcoterhals 10 Woman looking sharp Jumfer Groot 10 Woman in Black Dress Rennesi 10 Guy in Black Shit hvrojego 10 Woman in Red Shirt Jodi Womack 10 US Navy Team Official US Navy Imagery 11 Myst Corin@ 2008 27 Drifting Car Grandpar Bordeaux France 27 Fingers Victor 1558 27 Euro’s TaxRebate.org.uk 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 not listed are copyrighted by the author or 3rd parties.
Slide Photo Artist/Contributor 27 Lab Horia Varlan 32 Euro’s TaxRebate.org.uk 32 Pounds TaxRebate.org.uk 32 Euro’s as Plants TaxRebate.org.uk 33 Myst Corin@ 2008 34 Ledger Pea Green Girl 39 Myst Corin@ 2008 40 Database Oxygen Team– Oxyhen Icons - IconArchive 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 47 Business Woman Victor 1558 48 Business Woman Victor 1558 49 Soldiers Usasoc News Service 55 Myst Corin@ 2008 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 not listed are copyrighted by the author or 3rd parties.
Slide Photo Artist/Contributor 56 Group of people Joi ITO 59 Myst Corin@ 2008 60 Kettle Waytru 61 Myst Corin@ 2008 62 Tower Nimishgogri 62 Classroom Edwin11 62 Medical Tubs SNRE 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 not listed are copyrighted by the author or 3rd parties.