Blockchain Security on krash.dev

Navigating the Ethereum Yellow Paper

Mon, 23 Feb 2026 00:00:00 +0000

I’ll be honest with you: I attempted to read the Yellow Paper four times before I actually finished it. The first three times, I opened the PDF, saw equations like Υ(σ, T) ≡ σ', and promptly closed it, convinced it was written for people far smarter than me.

The fourth time, I changed my approach entirely. Instead of trying to understand it linearly, I treated it like - “I don’t have an option but to understand this”. This post is the map I wish I’d had.

Blockchain Architecture: Layers

Mon, 29 Dec 2025 00:00:00 +0000

In the last two blogs, we looked at the pieces that make a blockchain work and how the network agrees on what is true .

In here, we will look at how all those pieces sit together as layers, how blockchains are structured, and how Layer 1 and Layer 2 actually differ in practice. Once we know what each layer is responsible for, concepts like rollups, sequencers, proofs and scaling start making sense.

Consensus: How Blockchains Agree

Sun, 28 Dec 2025 00:00:00 +0000

Decentralization sounds simple until you realise every node acts on its own. In a blockchain each node holds its own copy of the ledger and processes data independently. Nodes see transactions at different times, some go offline, some behave incorrectly and some may try to cheat. Without a way to agree the network would split into a thousand truths. Consensus is what keeps all those independent nodes and all those independent ledgers marching in the same direction.

Blockchain Components

Sat, 27 Dec 2025 00:00:00 +0000

If you’re still asking ‘Why do I even need to learn Blockchain security? ’ No worries. I wrote this blog to answer exactly that. Give it a read, then come back and we’ll dive into Blockchain 101 together.

Now that you are here, let’s start by understanding what is Blockchain?

But wait, a bit of warning, there is way too much text in the entire blog - I tried putting some AI generated images (which make sense for the blog), but they also were not able to do much, so all the best!

Why Learn Blockchain & Blockchain Security?

Fri, 12 Sep 2025 00:00:00 +0000

In the world of AI, I’m gonna go rebel and talk about Blockchains. Why? Because I’ve been learning and tinkering with it, and I thought it’d be fun to share. Honestly, this is as much for my own notes as it is for anyone reading.

Blockchain isn’t as shiny as AI right now, but it’s still a big deal. Here’s the thing: blockchain is too important to ignore, but too risky to approach without understanding security. It’s not just a playground for developers writing smart contracts. Entrepreneurs building products, investors betting on tokens, policy makers drafting regulations, and security folks trying to protect users, they all have skin in the game.