Op 10-10-2017 heb ik een presentatie gegeven voor de KIVI kring Rotterdam met als onderwerp: Wat is een Blockchain en wat kun je ermee? Hierin heb ik de werking van Blockchains uitgelegd, gebruik maken van Bitcoin als voorbeeld.
170928 fex - de geheimen van een praktische blockchain toepassing - validFlevum
Innovatie | De geheimen van een praktische Blockchain toepassing
Sommige technologie goeroes voorspellen dat blockchain de hele wereld gaat veranderen. Waarom zeggen ze dat? En wat kun je er überhaupt mee, behalve betalen met bitcoins?
Tijdens deze bijeenkomst zullen de sprekers ingaan op een aantal praktische toepassingen die zij binnen Valid ontwikkeld hebben voor bedrijven.waar Valid mee samen werkt om praktische B2B-blockchain toepassingen te onderzoeken en te testen.
Het doel van deze experimenten is om een bedrijfsketen te stroomlijnen of zelfs een sector te ‘disrupten’. Een van de toepassingen hebben we ook in de praktijk gebracht. Deze praktische toepassing zullen we demonstreren. Tipje van de sluier: het heeft als doel het versnellen van het Letter of Credit proces tussen een onderneming, klanten in verre oorden en transporteurs van goederen.
Naast de demonstratie zullen ook vragen de revue passeren zoals: Wat is een blockchain eigenlijk? Wat kun je ermee? Naast mogelijkheden, zijn er ook beperkingen?
Uiteraard zal er ruimte zijn voor interactie dus neem alle vragen mee die je hebt over blockchain maar nooit heb durven stellen!
Nederlands introductie hoe je een enterprise blockchain applicatie kan bouwen en op welke platformen. Deze presentatie is gegeverns tijden de Cryto Café meetup van 15/11/2018
Op 10-10-2017 heb ik een presentatie gegeven voor de KIVI kring Rotterdam met als onderwerp: Wat is een Blockchain en wat kun je ermee? Hierin heb ik de werking van Blockchains uitgelegd, gebruik maken van Bitcoin als voorbeeld.
170928 fex - de geheimen van een praktische blockchain toepassing - validFlevum
Innovatie | De geheimen van een praktische Blockchain toepassing
Sommige technologie goeroes voorspellen dat blockchain de hele wereld gaat veranderen. Waarom zeggen ze dat? En wat kun je er überhaupt mee, behalve betalen met bitcoins?
Tijdens deze bijeenkomst zullen de sprekers ingaan op een aantal praktische toepassingen die zij binnen Valid ontwikkeld hebben voor bedrijven.waar Valid mee samen werkt om praktische B2B-blockchain toepassingen te onderzoeken en te testen.
Het doel van deze experimenten is om een bedrijfsketen te stroomlijnen of zelfs een sector te ‘disrupten’. Een van de toepassingen hebben we ook in de praktijk gebracht. Deze praktische toepassing zullen we demonstreren. Tipje van de sluier: het heeft als doel het versnellen van het Letter of Credit proces tussen een onderneming, klanten in verre oorden en transporteurs van goederen.
Naast de demonstratie zullen ook vragen de revue passeren zoals: Wat is een blockchain eigenlijk? Wat kun je ermee? Naast mogelijkheden, zijn er ook beperkingen?
Uiteraard zal er ruimte zijn voor interactie dus neem alle vragen mee die je hebt over blockchain maar nooit heb durven stellen!
Nederlands introductie hoe je een enterprise blockchain applicatie kan bouwen en op welke platformen. Deze presentatie is gegeverns tijden de Cryto Café meetup van 15/11/2018
This document contains an agenda for parallel sessions on the topic of blockchain applications in education. There are two time blocks listed, with sessions occurring from 13:30-14:30 and 15:00-16:00. Each time block contains 7 concurrent sessions taking place in different rooms. The sessions will discuss topics such as using blockchain to store learning outcomes, educational financing via blockchain, legal aspects of blockchain in education, credentialing and open badges, using semantic blockchain for diplomas, determining if blockchain answers educational questions, and paving the way from eportfolios to blockchain. Presenters include specialists from various universities and organizations.
The document discusses self-sovereign identities and their use in electronic business transactions. It proposes a Self-Sovereign Identity Framework (SSIF) that would support the creation, use, modification and deletion of self-sovereign identities. The SSIF would also support the association and revocation of attestations to identities. The goal of the SSIF infrastructure is to enable individuals to create and control digital identities, and for businesses to specify electronic business transactions that utilize digital identities. Current work is focused on modeling electronic business transactions and the requirements for valid business decisions based on digital identity data and statements.
The document discusses the problems with using blockchain for identity, noting that blockchains are more centralized than advertised, have poor scalability, consume large amounts of energy, and still require middlemen. It argues that self-sovereign identity using attribute-based credentials provides a better solution by allowing users to control access to attributes without relying on centralized identity providers or having all parties online simultaneously.
Open Badges are digital credentials that recognize skills or achievements. They provide visual representations of skills or qualifications that can be shared online. Open Badges use a common technical framework to allow badges to be issued, collected, and displayed digitally. This framework includes standards for the technical structure of badge data to ensure the validity and security of badge information. While Open Badges offer advantages as digital credentials that can motivate learning and be shared widely, some argue they may need additional identification verification and assurance of long-term availability for high-stakes uses. Blockchain technology is proposed as a potential solution to strengthen the durability of badge data over time.
Blockchain can be used in education to create secure digital student portfolios containing verified records of courses, certificates, grants and other credentials. This allows students to easily share complete educational histories with potential employers and colleges. Information in the portfolios is owned by each student and can be shared selectively while preserving privacy. Blockchain applications could streamline processes like certificate verification and travel reimbursements, while also preventing fraud and automatically revoking privileges if needed.
Rutger van Zuidam organized the Dutch Blockchain Hackathon to collaborate on developing applications for blockchain technology. The current centralized systems require a new decentralized approach using blockchain. The hackathon brings together startups, universities, regulators and others to co-create solutions. Examples of projects from past hackathons include using blockchain for refugee identity records and sharing energy through messaging apps. The hackathon focuses on an open ecosystem with both public and private partners to accelerate teams through funding and developer support.
Blockchains offer unique capabilities like verifiability, a multi-write database in untrusting contexts, and trustable execution of smart contracts. This allows for capabilities like certification on blockchains where students can receive accredited certificates. It also enables new models of employment and recruitment where skills are verified on blockchains. Other benefits include badging and reputation systems to showcase skills, as well as disintermediation where students own and control their own data rather than institutions.
Decentralized verification of official records across government, education, workforce, and certification could provide value to multiple industry sectors. The document discusses how civic records, academic records, evidence of skills, and professional licensure could benefit from decentralized verification, citing government agencies and educational institutions like the Massachusetts Institute of Technology and Republic of Malta that could utilize such a system.
The document summarizes a study conducted by the Joint Research Centre (JRC) of the European Commission on the use of blockchain technology in education. The study aims to identify current blockchain practices in education through case studies, explore potential future applications, and propose recommendations to support open education in EU member states. Main conclusions are that blockchain applications are still emerging in education but have potential to disrupt student information systems, and that open implementations utilizing open standards and self-sovereign data are more likely to achieve benefits. The study recommends a shared competence approach between the public and private sectors to ensure innovation and public interest are balanced.
Blockchains have the potential to transform education by facilitating new forms of credentialing and learning. However, significant challenges must be addressed regarding skills, knowledge, and mindsets to realize this potential. Educators and learners will need to understand blockchains and how they could impact existing systems in order to develop relevant skills and applications that leverage blockchains.
Groningen Province in the Netherlands sees opportunities for regional economic development through blockchain technology. It has strong digital infrastructure and an innovative IT sector well-positioned to develop blockchain solutions. The province will run a blockchain competition and program to fund feasibility studies and prototypes applying blockchain to challenges in healthcare, energy, and government. The goal is to strengthen regional industries and create new companies by connecting technical knowledge in fields like smart mobility and agriculture to relevant sectors through specific blockchain applications.
The document outlines an action agenda for blockchain implementation in the Netherlands presented by Dutch Digital Delta. It discusses the launch of the Dutch Blockchain Coalition between major companies, governments, and universities to collaborate on blockchain opportunities. The agenda proposes several blockchain fieldlabs across different regions and industries in the Netherlands to test applications, as well as an action line around digital identity and self-sovereign identity using blockchain. Implementation will require creating an accommodating environment and addressing challenges around developing a minimal viable ecosystem and complexity.
Joost van Keulen is an alderman and vice-mayor for the city of Groningen in the Netherlands. As an alderman, he helps govern the city and address issues facing residents. Van Keulen also serves as the vice-mayor, assisting the mayor in overseeing operations and administration of the city.
This document contains an agenda for parallel sessions on the topic of blockchain applications in education. There are two time blocks listed, with sessions occurring from 13:30-14:30 and 15:00-16:00. Each time block contains 7 concurrent sessions taking place in different rooms. The sessions will discuss topics such as using blockchain to store learning outcomes, educational financing via blockchain, legal aspects of blockchain in education, credentialing and open badges, using semantic blockchain for diplomas, determining if blockchain answers educational questions, and paving the way from eportfolios to blockchain. Presenters include specialists from various universities and organizations.
The document discusses self-sovereign identities and their use in electronic business transactions. It proposes a Self-Sovereign Identity Framework (SSIF) that would support the creation, use, modification and deletion of self-sovereign identities. The SSIF would also support the association and revocation of attestations to identities. The goal of the SSIF infrastructure is to enable individuals to create and control digital identities, and for businesses to specify electronic business transactions that utilize digital identities. Current work is focused on modeling electronic business transactions and the requirements for valid business decisions based on digital identity data and statements.
The document discusses the problems with using blockchain for identity, noting that blockchains are more centralized than advertised, have poor scalability, consume large amounts of energy, and still require middlemen. It argues that self-sovereign identity using attribute-based credentials provides a better solution by allowing users to control access to attributes without relying on centralized identity providers or having all parties online simultaneously.
Open Badges are digital credentials that recognize skills or achievements. They provide visual representations of skills or qualifications that can be shared online. Open Badges use a common technical framework to allow badges to be issued, collected, and displayed digitally. This framework includes standards for the technical structure of badge data to ensure the validity and security of badge information. While Open Badges offer advantages as digital credentials that can motivate learning and be shared widely, some argue they may need additional identification verification and assurance of long-term availability for high-stakes uses. Blockchain technology is proposed as a potential solution to strengthen the durability of badge data over time.
Blockchain can be used in education to create secure digital student portfolios containing verified records of courses, certificates, grants and other credentials. This allows students to easily share complete educational histories with potential employers and colleges. Information in the portfolios is owned by each student and can be shared selectively while preserving privacy. Blockchain applications could streamline processes like certificate verification and travel reimbursements, while also preventing fraud and automatically revoking privileges if needed.
Rutger van Zuidam organized the Dutch Blockchain Hackathon to collaborate on developing applications for blockchain technology. The current centralized systems require a new decentralized approach using blockchain. The hackathon brings together startups, universities, regulators and others to co-create solutions. Examples of projects from past hackathons include using blockchain for refugee identity records and sharing energy through messaging apps. The hackathon focuses on an open ecosystem with both public and private partners to accelerate teams through funding and developer support.
Blockchains offer unique capabilities like verifiability, a multi-write database in untrusting contexts, and trustable execution of smart contracts. This allows for capabilities like certification on blockchains where students can receive accredited certificates. It also enables new models of employment and recruitment where skills are verified on blockchains. Other benefits include badging and reputation systems to showcase skills, as well as disintermediation where students own and control their own data rather than institutions.
Decentralized verification of official records across government, education, workforce, and certification could provide value to multiple industry sectors. The document discusses how civic records, academic records, evidence of skills, and professional licensure could benefit from decentralized verification, citing government agencies and educational institutions like the Massachusetts Institute of Technology and Republic of Malta that could utilize such a system.
The document summarizes a study conducted by the Joint Research Centre (JRC) of the European Commission on the use of blockchain technology in education. The study aims to identify current blockchain practices in education through case studies, explore potential future applications, and propose recommendations to support open education in EU member states. Main conclusions are that blockchain applications are still emerging in education but have potential to disrupt student information systems, and that open implementations utilizing open standards and self-sovereign data are more likely to achieve benefits. The study recommends a shared competence approach between the public and private sectors to ensure innovation and public interest are balanced.
Blockchains have the potential to transform education by facilitating new forms of credentialing and learning. However, significant challenges must be addressed regarding skills, knowledge, and mindsets to realize this potential. Educators and learners will need to understand blockchains and how they could impact existing systems in order to develop relevant skills and applications that leverage blockchains.
Groningen Province in the Netherlands sees opportunities for regional economic development through blockchain technology. It has strong digital infrastructure and an innovative IT sector well-positioned to develop blockchain solutions. The province will run a blockchain competition and program to fund feasibility studies and prototypes applying blockchain to challenges in healthcare, energy, and government. The goal is to strengthen regional industries and create new companies by connecting technical knowledge in fields like smart mobility and agriculture to relevant sectors through specific blockchain applications.
The document outlines an action agenda for blockchain implementation in the Netherlands presented by Dutch Digital Delta. It discusses the launch of the Dutch Blockchain Coalition between major companies, governments, and universities to collaborate on blockchain opportunities. The agenda proposes several blockchain fieldlabs across different regions and industries in the Netherlands to test applications, as well as an action line around digital identity and self-sovereign identity using blockchain. Implementation will require creating an accommodating environment and addressing challenges around developing a minimal viable ecosystem and complexity.
Joost van Keulen is an alderman and vice-mayor for the city of Groningen in the Netherlands. As an alderman, he helps govern the city and address issues facing residents. Van Keulen also serves as the vice-mayor, assisting the mayor in overseeing operations and administration of the city.
2. Blockchain in Education
KENMERKEN VAN blockchain
• Onveranderbaar
– Niet aan te passen
– Hacker-proof
• Onafhankelijk verifieerbaar
– Door iedereen die toegang heeft
– Zonder centrale autoriteit
• Gedistribueerde opslag
– Redundancy, Fail-safe
3. Blockchain in Education
WAT BIEDT blockchain ONS
• Onveranderbaar
– Niet aan te passen
– Hacker-proof
• Onafhankelijk verifieerbaar
– Door iedereen die toegang heeft
– ZONDER centrale autoriteit
• Gedistribueerde opslag
– Redundancy, Fail-safe
betrouwbaarhei
d
4. Blockchain in Education
WAARMERKEN met BLOCKCHAIN
2
Maakt een elektronische vingerafdruk (hash)
van het document
1
Interactief of als een stap in het workflow
proces van het SIS.
Dus niet het document zelf.
3
Registreert alleen de vingerafdruk en de
oorsprong op de Blockchain
5. Blockchain in Education
VERIFICATIE VAN
DOCUMENTEN
6
Verificatie van de vingerafdruk op de
Blockchain en geeft resultaat +
datum-tijd en oorsprong.
5
Er wordt opnieuw een elektronische
vingerafdruk (hash) van het document gemaakt
4
Gebruiker biedt het document (brief, email
met bijlagen, etc) ter verificatie aan.
9. Blockchain in Education
Bewijskracht
Artikel 156a, Wetboek van Burgerlijke Rechtsvordering
Onderhandse akten kunnen op een andere wijze dan bij geschrift worden opgemaakt op zodanige wijze
dat het degene ten behoeve van wie de akte bewijs oplevert, in staat stelt om de inhoud van de akte op te
slaan op een wijze die deze inhoud toegankelijk maakt voor toekomstig gebruik gedurende een periode
die is afgestemd op het doel waarvoor de akte bestemd is te dienen, en die een ongewijzigde reproductie
van de inhoud van de akte mogelijk maakt.
• Art. 156a Rv. is technologie-neutraal opgesteld
• eWaarmerk is een elektronische onderhandse akte
• Levert daarmee dwingende materiële bewijskracht tussen partijen op
BEWIJSKRACHT
http://maxius.nl/wetboek-van-burgerlijke-rechtsvordering/artikel156a
https://cms.law/en/NLD/Publication/Gaat-blockchain-de-juridische-notariele-wereld-veranderen (juni 2017)
10. Blockchain in Education
KENMERKEN VAN blockchain
• Veilige Gedistribueerde opslag
– Alleen registratie van de vingerafdruk (hash)
• Nooit terug te leiden tot het document of de gegevens
– Inclusief oorsprong op basis van PKI / encryptie
• Onveranderbaar
– hackeR-proof
– bewijskracht
• Onafhankelijk verifieerbaar
– Zonder centrale autoriteit
– Burger heeft controle
– Toont oorsprong, Datum & tijd van registratie
11. Blockchain in Education
DISCUSSIEPUNTEN MBT blockchain
• PUBLIC OF PERMISSIONED BLOCKCHAIN
– WELKE INFORMATIE?
• Toon oorsprong, Datum & tijd van registratie
• OF MEER?
• Onafhankelijk verifieerbaar
– STUDENT IN controle
– Zonder OF MET HULP VAN centrale autoriteit
• STANDAARDEN
– Digital identities
– W3C Verifiable CLAIMS
• BLOCKCERTS, OPEN BADGES