Balancing privacy and accountability in digital payment methods using zk-SNARKs

In this paper we propose and implement a digital permissioned decentralized anonymous payment scheme that finds a balance between anonymity and auditability. This approach allows banks to ensure that their clients are not participating in illegal financial transactions, whilst clients stay in control over their sensitive, personal information....

Aligning Stakeholder Interests Governance Requirements and Blockchain Design in Business and Government Information Sharing

Supply chain visibility ledger

Improved situational awareness, also known as Supply Chain Visibility, contributes to better decisions with the ability to synchronize processes and reduce costs. It requires data sharing of for instance positions, speed, direction, and estimated time of arrival and—departure at locations of vessels, trucks, barges, and trains. Any two...

Practical Mutation Testing for Smart Contracts

Solidity smart contracts operate in a hostile environment, which introduces the need for the adequate application of testing techniques to ensure mitigation of the risk of a security incident. Mutation testing is one such technique. It allows for the evaluation of the efficiency of a test suite in detecting faults in a program, allowing...

A Methodological Approach for Development and Deployment of Data Sharing in Complex Organizational Supply and Logistics Networks with Blockchain Technology

Each manufacturer, supplier, and retailer has its own chain of collaborating stakeholders to meet their customer demands. Many perspectives can be taken like food safety, security, and sustainability, which may each lead to separate solutions that are not necessarily interoperable with each other. Data can only be shared within the context of...

Geef Blockchain een goede basis

Proefprojecten met blockchains, die minder bureaucratie en een betere dienstverlening beloven, schieten in Nederland als paddenstoelen uit de grond. Daarom is het hoog tijd om werk te maken van een goede onderliggende infrastructuur, zegt TNO-onderzoeker Oskar van Deventer.

Applying blockchain technology for situational awareness in logistics: An example from rail

Improved situational awareness, also known as supply chain visibility, contributes to better decisions with the ability to synchronize processes and reduce costs. It requires data sharing of for instance positions and Estimated Time of Arrival (ETA) of transport means. Blockchain technology could be a means to support data sharing, due to its...

The Applicability of Blockchain Technology in the Mobility and Logistics Domain

Blockchain technology in the last 3–4 years has attracted a great deal of attention due to its potential for the disruption various sectors of the economy including the financial sector, and more recently the mobility and logistics domain. The technology, which was developed as the foundation for the cryptocurrency Bitcoin, has developed much...

Blockchain en de toekomst van de organisatie [Blockchain and the future of the work organisation]

Blockchain has become popular because of Bitcoin. This Information and Communication Technology offers several opportunities as backbone IT-infrastructure for organisations. To understand the impact of blockchains on organising, a theoretical framework on information and communication costs has been used. The immutable ledger, smart contracts...

Rethinking blockchain security: Position paper

Blockchain technology has become almost as famous for incidents involving security breaches as for its innovative potential. We shed light on the prevalence and nature of these incidents through a database structured using the STIX format. Apart from OPSEC-related incidents, we find that the nature of many incidents is specific to blockchain...

Techruption Consortium Blockchain: What it takes to run a blockchain together

ICN4blockchain: efficient blockchain acces via information-centric networking

Blockchains or blockchain technology (BCT) are technologies based on peer-to-peer cryptographic functions in a fully distributed architecture. The scalability of blockchains is threatened by the suboptimality of its data exchange model, due to the fact that most data is exchanged redundantly many times. Blockchain scalability is a widely...

Trust in a multi-tenant, logistics, data sharing infrastructure: Opportunities for blockchain technology

In support of the trend towards ever more complex supply chain collaboration for the Physical Internet, a trusted, multi-tenant (and interoperable) data sharing infrastructure has to be enabled. Trust is a condition sine qua non organizations may not be prepared to share potentially competitive sensitive information. As such, trust has to be an...

Applying blockchain technology for hyperconnected logistics

Blockchain technology receives a lot of interest and investments the last three years. It promises a trusted environment for (un)permissioned data sharing. With respect to logistics, enterprises and authorities can (near) real time share state information. Whenever a stakeholder changes the state of one or more objects like discharging a...