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DSD-INT 2018 Building a Blockchain - De Rooij

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Presentation by Erik de Rooij (Deltares) at the Data Science Symposium 2018, during Delft Software Days - Edition 2018. Thursday 15 November 2018, Delft.

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DSD-INT 2018 Building a Blockchain - De Rooij

  1. 1. Building a Block Chain, A proof of concept for monitoring ground water in de city of Gouda. 15 November 2018
  2. 2. Why…. 15 November 2018
  3. 3. Stakeholders • Tom Schilperoort – Water Guild • Werncke Husslage – Province of South Holland • Rene Zwan- Waterboard Rijnland • Jan Prinsen –Municipality Gouda • Marjolein Broos – Municipality Gouda Wareco Riemer de Witte - Wareco Xurux Niek de Feijter – Project lead - Xurux Chakir Amras – IT Architect – Xurux Peter Mols – Director - Xurux Deltares Gilles Erkens – Subsidence expert Erik de Rooij – Software developer Frans van de Ven – Expert advisor Urban Land & Water management Joost Icke – Programme management Next Generation Software Bob Hoogendoorn – Project lead 15 November 2018 We want access to data that is accepted by all parties.
  4. 4. 15 November 2018
  5. 5. 15 November 2018 Blockchain: 3 domains brought together CryptographyDatabase- technique Distributed PeertoPeer network Blockchain
  6. 6. 15 November 2018 Database- technique ▪ Chain of blocks
  7. 7. 15 November 2018 Don’t mutate, Only record - Only add new registrations - Don’t change existing blocks - Cannot rewrite history
  8. 8. 15 November 2018 Cryptography (one-way) b89eaac7e61417341b710b727 768294d0e6a277b The quick brown fox jumps over the lazy dog The quick brown fox jumps over the lazy dog. 2fc5a684737ce1bf7b3b239df43 2416e0dd07357 = “#”
  9. 9. 15 November 2018 ▪ One network ▪ Every node is a complete copy of the Blockchain* ▪ Every node validates new transactions Distributed network
  10. 10. Building a block chain 15 November 2018 Use of Blockchain to raise trust between citizens and municipality. Proof of concept for monitoring water levels inner city of Gouda.
  11. 11. InSAR ground level change Gouda 2013-11-25 to 2016-09-24 15 November 2018
  12. 12. The project will deliver a so-called private blockchain to provide a fixed number of stakeholders access to a limited dataset and its associated workflow and gain experience with this new technology. Every stakeholder will have full access to the data and in addition there will be an interface presenting data integrity, showing who has submitted and accessed the data and if the data were processed and or edited. Such actions will be authenticated, verified and registered on a local node that is under control of the stakeholders. This provides full insight and control on the data provenance and processing. It is our expectation that this will increase the trust in the acquired and processed data with all stakeholders. 15 November 2018
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  14. 14. Existing data flow 15 November 2018
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  21. 21. https://geoblockchain.nl/blockchain/ 15 November 2018
  22. 22. Feedback and presentations Stakeholder feedback (31-October) - Important step in gaining experience - Little interest in technology. Happy with insight and identify possible bottlenecks in process. - Happy to be working together with all stakeholders. Presentations: - Blockchain symposium Zuid-Holland 19 June - Waterbouwdag 5 October Publications: - Journal Civiele Techniek - Invitation PIB Blockchain Singapore 12-16 November 15 November 2018
  23. 23. Thank you Questions? 15 November 2018
  24. 24. Participate 15 November 2018
  25. 25. 15 November 2018
  26. 26. Laatste stap Eerste feedback van stakeholders; - positief, maar de technologie is nog een “black box”. - ‘wat schiet ik ermee op? Evaluatie en nieuwe toepassingen: - INSAR (Interferometric synthetic-aperture radar)… Bodemdaling in Gouda… 15 November 2018
  27. 27. Links https://www.nature.com/news/the-environment-needs-cryptogovernance-1.22023 https://toplink.weforum.org/knowledge/insight/a1Gb00000038qmPEAQ/explore/dimension/a1Gb000 0001kJzKEAU/summary https://www.mckinsey.com/industries/high-tech/our-insights/how-blockchains-could-change-the- world http://futurethinkers.org/blockchain-environment-climate-change/ http://www.straitstimes.com/opinion/forget-bitcoin-its-blockchain-that-will-change-the-world http://www.lokaalbestuur.nl/lokaal_bestuur/artikel/t/heel_holland_zakt/bron/lokaalbestuur/uitgave/10 5 https://www.da2020.nl/sites/default/files/2017- 03/Verkenningen_Pilots%20bij%20Rijksoverheid_Resultaten%20blockchainpilots%20jun- nov%202016.pdf 15 November 2018

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