Blockchain is an inspiring emerging technology that takes much attention from various
researchers and companies. The technology offers various benefits such as data security …

Bitcoin introduced delegation of control over a monetary system from a select few to all who
participate in that system. This delegation is known as the decentralization of controlling …

The Blockchain technology, featured with its decentralized tamper-resistance based on a
Peer-to-Peer network, has been widely applied in financial applications, and even further …

We present a novel Proof-of-Stake (PoS) protocol, Ouroboros Genesis, that enables parties
to safely join (or rejoin) the protocol execution using only the genesis block information. Prior …

Since the inception of Bitcoin, a plethora of distributed ledgers differing in design and
purpose has been created. While by design, blockchains provide no means to securely …

Cryptocurrencies gain trust in users by publicly disclosing the full creation and transaction
history. In return, the transaction history faithfully records the whole spectrum of …

Blockchain technology has gained tremendous popularity both in practice and academia.
The goal of this article is to develop a coherent overview of the state of the art in blockchain …

While blockchains and more generally distributed ledger technologies (DLTs) are passing
over their hype curve peak, their shortcomings are becoming more apparent. One relatively …

We present a novel way for cryptocurrency miners to manipulate the effective interest-rate on
loans or deposits they make on decentralized finance (DeFi) platforms by manipulating …

Miners play a key role in cryptocurrencies such as Bitcoin: they invest substantial
computational resources in processing transactions and minting new currency units. It is well …