Blockchains, in general, and cryptocurrencies such as Bitcoin, in particular, are realized
using distributed systems and hence critically rely on the performance and security of the …

Blockchain-based cryptocurrencies have received extensive attention recently. Massive data
has been stored on permission-less blockchains. The analysis of massive blockchain data …

Decentralization has been widely acknowledged as a core virtue of blockchains. However,
in the past, there have been few measurement studies on measuring and comparing the …

Hyperledger Fabric is a popular open-source project for deploying permissioned
blockchains. Many performance characteristics of the latest Hyperledger Fabric (eg …

Blockchain-based cryptocurrencies and applications have flourished in blockchain research
community. Massive data generated from diverse blockchain systems bring not only huge …

The Bitcoin blockchain safety relies on strong network synchrony. Therefore, violating the
blockchain safety requires strong adversaries that control a mining pool with 51% hash rate …

Due to decentralization, immutability, circulation, anonymity, blockchain technology has
become a hot topic but also a hotbed of various cyber-crimes. Many perpetrators attack …

Decentralization has been touted as the principal security advantage which propelled
blockchain systems at the forefront of developments in the financial technology space. Its …

Rapidly growing distributed ledger technologies (DLTs) have recently received attention
among researchers in both industry and academia. While a lot of existing analysis (mainly) …

Miners in a blockchain system are suffering from ever-increasing storage costs, which in
general have not been properly compensated by the users' transaction fees. This reduces …