Presentation, verification and storage of identity information remains a challenge in today’s digital infrastructure. Even today, we are often requested to scan our passports and send them over a barely...
This position statement argues that we need countermeasures against coercion of verifiable credentials, especially COVID-19 credentials. We propose an initial set of countermeasures, which are an amalgamation...
This blog proposes a Proof-of-Customer model for public permissioned blockchains, like Sovrin and Ripple. This is an economic incentive model for validators, similar to the Proof-of-Work incentives for...
This blog discusses the concept of “guardianship” in the context of self-sovereign identity (SSI). Whereas SSI emphasizes the self-sovereignty of persons, there are many use cases where a person is unable...
Smart contract governance? This blog proposes a governor bootstrapping design pattern for smart contract governance, which makes it possible to future-proof smart contracts from the get-go. We also provide...
Self-sovereign identity (SSI) promises to empower citizens with new means to manage privacy, elimination of logins, and much faster transactions via the internet as well as in real life. SSI promises to...
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...
Whereas the business model for validators (‘miners’) is clear in unpermissioned blockchains, it is less obvious in permissioned blockchains. A viable business model should have economic incentives for...
Proposals to implement blockchain as a replacement for existing approaches to exchange data are often accompanied by promises of significant technological, legal and organisational improvements. But do...
The term ‘Self-Sovereign Identity’ (SSId) has been attracting quite some attention in the (relatively small) world of ‘Internet-and-Identity’, with initiatives such as Sovrin and uPort as examples (and,...
Much of the excitement and hype surrounding blockchain technology revolves around the promise of co-called smart contracts. Their immutability is what makes the concept of smart contracts so powerful,...
Blockchains are expected to be beneficial to Dutch business and government. This whitepaper argues that there is an opportunity for a Dutch public blockchain facility, possibly organised through a Dutch...
The elevator pitch of Lightning Network is “faster and cheaper bitcoin transactions”. As many know, the bitcoin network is regularly reaching its capacity, resulting in excessive transaction fees (many...