Skip to main content


Showing posts from July, 2018

Introduction to Blockchain - Evolution (Part 2)

In the last part of this series , we discussed the basic concepts of blockchain technology. In this post, we are going to discuss the evolution of blockchain and it the latter part of the post, I will introduce the concept of bitcoin technology at a high level. Hashing and Hash Functions The concept of hashing is the backbone of the blockchain technology and it helps us to speed up the searching process. Hashing allows us to map any data to a fixed size. The entity which performs hashing is called a Hash Function. For e.g, H(x) = x%n ( % is the modulo operator - returns remainder when x is divided by n ) , as it is evident that x can be of any value but H(x) will always be in the range [0, n-1] . x is called Message H(x) is called Message Digest Cryptographic Hash Function It is a mathematical algorithm that maps data of arbitrary size to a bit string of a fixed size (a hash). It is a one-way function i.e. we can find H(x) if x and n are given but if H(x) and n

Introduction to Blockchain - Basics (Part 1)

The blockchain isn't just the backbone of cryptocurrency - it could change the world. Applications are endless. It is one of the most sought-after skills these days. Blockchain developers are in huge demand but there are only a few who can elegantly develop a blockchain application. I will admit that I am a newbie to this field and all the related terminology. Recently I have decided to dive into this field and after learning a few nuances, I thought it would be a good idea to share my understanding with everyone. Hence, this blog. This is the first blog of this series and without further ado let's learn together the awesome concepts of Blockchain technology.  What is a blockchain? It is a decentralized  platform which enables multiple domains , who do not trust each other to collaborate in a decision-making process . Main keywords from the above definition are -  Decentralized - There is no single centralized authority that makes decisions on behalf of a