A blockchain is a decentralized peer to peer platform which provides security services based
on some key concepts, namely authentication, confidentiality, integrity and authorization. It is …

Self-sovereign identity (SSI) is a digital identity management model managed in a
decentralized manner. It allows identity owners to manage and store their digital identities in …

Selfish mining is a typical malicious attack targeting the blockchain-based bitcoin system, an
emerging crypto asset. Because of the non-incentive compatibility of the bitcoin mining …

Blockchain technology has gained prominence over the last decade. Numerous
achievements have been made regarding how this technology can be utilized in different …

Bitcoin-NG is an extensible blockchain protocol based on the same trust model as Bitcoin. It
divides each epoch into one keyblock and multiple microblocks, effectively improving the …

Blockchains provide decentralized data storage and have gained popularity over the past
decade. Their popularity has led to a multitude of attacks in research and practice. We …