What are the different layers in the blockchain system? What do these layers do? — A blockchain-based solution is composed of many layers. These layers are stacked one over the other. …

Simple methods that make a Blockchain vulnerable — I hear plenty of buzz that blockchains are supersecure and attack proof and so are used global scale shared public ledgers. Before I try to understand what and how blockchains are made attack proof, I was wanted to know what attacks are possible on a blockchain. …

Methods to ensure security and validity — In my last article, “How to Derail a Blockchain?”, we saw the two attacks- Sybil attack and 51% attack- towards which blockchain systems are vulnerable. In this article, I look into the various methods by which blockchain systems are secured. CONSENSUS PROTOCOLS The security and the correctness of blockchain systems are achieved…