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AuthorVlad Zamfir
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Vlad Zamfir

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The History of Casper – Chapter 2

Posted on December 7th, 2016.

This chapter describes the game theory and economic security modelling we were doing in the Fall of 2014. It recounts how the “bribing attacker model” led our research directly to a radical solution to the long range attack problem. Chapter 2: The Bribing Attacker, Economic Security, and the Long Range Attack Problem Vitalik and I […]

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The History of Casper — Chapter 1

Posted on December 6th, 2016.

Vitalik suggested last week that I share my basic research and design philosophy in a blog post, I agreed but complained that it was still changing. My friend Jon West told me that everyone would really appreciate it if I told everyone about my Casper research, I mostly agreed. Then someone on reddit told me […]

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Introducing Casper “the Friendly Ghost”

Posted on August 1st, 2015.

Hi everyone – Vlad here. I’ve been working on the analysis and specification of  “proof-of-stake” blockchain architecture since September 2014. While Vitalik and I haven’t agreed on all of the details of the spec, we do have consensus on many properties of the proof-of-stake protocol that will likely be implemented for the Serenity release! It […]