blockchain

  • Install Hyperledger Fabric on Kubernetes Mar 20 2019
    A step-by-step tutorial on how to install hyperledger fabric on Kubernetes. This setup uses a two node cluster but can be done on a single VM.

  • Blockchain and Decentralization will NOT fix the Internet Mar 26 2018
    Stop saying that blockchain and decentralizing everything will fix the Internet. There has been a lot of news around Cambridge Analytica abusing Facebook profile data, and Facebook for mining user data without explicit permission. Yes, I agree that these are very bad things that need to be addressed. And I also agree that while Facebook is at the front-lines of this digital privacy war, we could also blame many other companies like Google, Twitter, Amazon, etc for similar practices.

  • Javascript Hashcash Proof of Work Dec 04 2017
    Suppose that you developed an app that will give users free stuff when they click a button. Obviously, there’s nothing stopping one user from spamming the button one million times and collecting a whole bunch of free stuff. If you wanted to prevent that, you could use something like a CAPTCHA, or perhaps give each user a session and cool off period. You could also implement something called a proof of work system.

  • Build a Javascript Blockchain Dec 04 2017
    Blockchain! It’s the mystical buzzword that every company is saying right now. At its core, the basic concept of blockchain is not hard to understand; it’s essentially a distributed linked list. It’s also used by the popular cryptocurrency called Bitcoin. The advantages of Blockchain is that it allows for a decentralized collection of data whose integrity is easily verifiable, and the data itself is immutable Keep in mind that a fully robust blockchain will also contain smart contracts, mining algorithms (proof of work/proof of stake) and other flavorful elements that you could enhance the chain with.