With the recent advent of blockchains, we have witnessed a plethora of blockchain
proposals. These proposals range from using work to using time, storage or stake in order to …

REM: Resource-Efficient Mining for Blockchains Page 1 This paper is included in the
Proceedings of the 26th USENIX Security Symposium August 16–18, 2017 • Vancouver, BC …

Existing blockchain systems scale poorly because of their distributed consensus protocols.
Current attempts at improving blockchain scalability are limited to cryptocurrency. Scaling …

Blockchains from a distributed computing perspective Page 1 78 COMMUNICATIONS OF THE
ACM | FEBRUARY 2019 | VOL. 62 | NO. 2 review articles IMA GE B Y ANDRIJ BOR YS A …

The blockchain (BC) world is rapidly becoming a universe of several ledgers designed for a
specific purpose, holding data previously stored (ie, siloed) in centralized databases. The …

The expansion of blockchain technologies from financial applications to other fields
intensifies the problem of an increasing size of data stored in the blockchain. Unfortunately …

Blockchain technologies are gaining massive momentum in the last few years. Blockchains
are distributed ledgers that enable parties who do not fully trust each other to maintain a set …

Blockchain is increasingly deployed in a broad range of sectors, ranging from banking and
finance to manufacturing to energy to transportation, and so on. While many technological …

The blockchain emerges as an innovative tool that has the potential to positively impact the
way we design a number of online applications today. In many ways, the blockchain …

Current blockchain platforms, especially the recent permissioned systems, have
architectural limitations: smart contracts run sequentially, all node executes all smart …