Blockchain technology is fast becoming the most transformative technology of recent times
and has created hype and optimism, gaining much attention from the public and private …

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 …

Blockchains are currently gaining attention as a newly emerging technology in both
academia and industry, capable of impacting a variety of domains beyond cryptocurrencies …

Blockchain protocols' primary security goal is consensus: one version of the global ledger
that everyone in the network agrees on. Their proofs of security depend on assumptions on …

As an append-only distributed database, blockchain is utilized in a vast variety of
applications including the cryptocurrency and Internet-of-Things (IoT). The existing …

Public permissionless blockchains facilitate peer-to-peer digital transactions, yet face
performance challenges, specifically minimizing transaction confirmation time to decrease …

As an append-only distributed database, blockchain is utilized in a vast variety of
applications including the cryptocurrency and Internet-of-Things (IoT). The existing …

Safeguarding blockchain peer-to-peer (P2P) networks is more critical than ever in light of
recent network attacks. Bitcoin has been successfully handling traditional Sybil and eclipse …

Improving transaction throughput is an important challenge for Bitcoin. However, shortening
the block generation interval or increasing the block size to improve throughput makes it …

Efficient and reliable propagation of blocks is vital to the scalability of the Bitcoin network. As
a result, several schemes, such as the compact block protocol (BIP 152), have been …