Blockchain technology provides a data structure with inherent security properties that
include cryptography, decentralization, and consensus, which ensure trust in transactions. It …

Future Internet involves several emerging technologies such as 5G and beyond 5G
networks, vehicular networks, unmanned aerial vehicle (UAV) networks, and Internet of …

Decentralized Finance (DeFi), a blockchain powered peer-to-peer financial system, is
mushrooming. Two years ago the total value locked in DeFi systems was approximately …

Blockchains, and specifically smart contracts, have promised to create fair and transparent
trading ecosystems. Unfortunately, we show that this promise has not been met. We …

Permissionless blockchains such as Bitcoin have excelled at financial services. Yet,
opportunistic traders extract monetary value from the mesh of decentralized finance (DeFi) …

In this paper, we systematically explore the attack surface of the Blockchain technology, with
an emphasis on public Blockchains. Towards this goal, we attribute attack viability in the …

Permissionless blockchains require a protocol to generate consensus. Many prominent
permissionless blockchains employ Proof-of-Work (PoW) for that purpose, but PoW …

Bitcoin is a popular cryptocurrency that records all transactions in a distributed append-only
public ledger called blockchain. The security of Bitcoin heavily relies on the incentive …

To non-experts, the traditional Centralized Finance (CeFi) ecosystem may seem obscure,
because users are typically not aware of the underlying rules or agreements of financial …

The core technical component of blockchains is consensus: how to reach agreement among
a distributed network of nodes. A plethora of blockchain consensus protocols have been …