2014•ACM SIGMETRICS Performance Evaluation ReviewRequires access

Proof of Activity

Iddo Bentov, Charles Lee, Alex Mizrahi, Meni Rosenfeld

Abstract

We propose a new protocol for a cryptocurrency, that builds upon the Bitcoin protocol by combining its Proof of Work component with a Proof of Stake type of system. Our Proof of Activity protocol offers good security against possibly practical attacks on Bitcoin, and has a relatively low penalty in terms of network communication and storage space.

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Key concepts: Proof-of-work system, Cryptocurrency, Protocol (science), Computer science, Proof of concept, Component (thermodynamics), Computer security, Computer network