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Democracy is vulnerable to a 51% attack

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Blog is Moving

September 21, 2018 ~ joelkatz ~ Leave a comment

I’ll have more details shortly. But this blog is being relaunched as “Distributed Agreement”. Head on over to DistributedAgreement.com and check it out. But be patient, the relaunch is not yet official.

Censorship and Censorship Resistance

June 19, 2018June 19, 2018 ~ joelkatz ~ 1 Comment

People in the blockchain space often talk about censorship and censorship resistance. It is often claimed that censorship resistance is one of the key properties that decentralized, blockchain systems can provide at a level not possible with previous technologies. But exactly what is censorship resistance?

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Practical Byzantine Agreement

October 20, 2016October 20, 2016 ~ joelkatz ~ 1 Comment

How might we use a blockchain to solve a real-world Byzantine agreement problem?

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The war on financial crime

July 31, 2016July 31, 2016 ~ joelkatz ~ Leave a comment

Are we fighting terrorism and money laundering deaf and blind, stifling innovation, and violating rights?

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The global war on cash

June 29, 2016June 29, 2016 ~ joelkatz ~ Leave a comment

Governments around the world are deliberately making it as difficult as possible to use cash. At the same time, financial institutions are cooperating to refuse service to customers for shocking reasons, for example, that corrupt regimes have designated them “terrorists” just because they oppose that regime.

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Some hard numbers

June 9, 2016June 9, 2016 ~ joelkatz ~ Leave a comment

My solar power system has now been fully operational for one month. My electric bill is about $330 less than it would have been without the system.

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Are Bitcoiners against innovation?

June 3, 2016June 4, 2016 ~ joelkatz ~ 2 Comments

Today, a company I advise, Chronicled, got some good press. But then something happened that really bothered me.

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The war on cash

May 22, 2016June 20, 2016 ~ joelkatz ~ 4 Comments

Recently, I posted a tweet, “The war on cash means you can buy a coffee if, and only if, an FI can make a profit on it.” The tweet was prompted by another tweet from a coffee shop that only accepts credit cards.

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Byzantine Fault Tolerance

May 16, 2016May 16, 2016 ~ joelkatz ~ 1 Comment

Lately, I’ve been thinking a lot about Byzantine agreement protocols. The Byzantine generals is a famously unsolvable problem in computer science. Except now we have ways to solve it, and that might mean we need to rethink some things.

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Huli huli chicken wings

May 15, 2016May 24, 2016 ~ joelkatz ~ Leave a comment

My wife and I recently spent some time in Hawaii.
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