In the early 2000’s, a group of activists advocating the wide-spread use of cryptography and privacy-enhancing technologies were engaging over the `cypherpunks’ mailing-list in an effort to create an anonymous, monitor-free digital cash.

At the core of Bitcoin is a method for reaching agreement on a shared chain of blocks where each block contains a sequence of transactions. This core is called the Blockchain. In many ways the Blockchain is the most intriguing and innovative aspect of Bitcoin.

…….read more if you are interested in our study of Blockchain through the lens of the theory of distributed computing. Our goal is to present analogies and connections between Blockchain protocols and Byzantine fault tolerant (BFT) protocols. We also discuss opportunities to consider hybrid solutions:

The Greek Tragedy of Industrial Computing Research Labs

The recent passing of Bob Taylor resurfaced the fascinating love-hate relationship of industrial research labs across generations.

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Flexible Paxos: A new breed of scalable, resilient and performant consensus algorithms is made possible

Early in the summer one of the interns, a Cambridge UK student of Jon Crowcroft named Heidi Howard, approached me with a surprising observation about Paxos:

   Each of the phases of Paxos may use non-intersecting quorums. Only quorums from different phases are required to intersect. Majority quorums are not necessary as intersection is required only across phases.

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