https://lucassaldanha.github.io/Personal blog of Lucas Saldanha. 2026-05-14T17:28:25+12:00 Lucas Saldanha https://lucassaldanha.github.io/ Jekyll © 2026 Lucas Saldanha /assets/img/favicons/favicon.ico /assets/img/favicons/favicon-96x96.png 2025-03-13T08:58:00+13:00 2025-03-13T08:58:00+13:00 https://lucassaldanha.github.io/posts/who-moved-my-cheese-testnet/ Lucas Saldanha

The recent incidents on the Holesky and Sepolia networks have made me think about our current state of testnets and who is most affected by these issues. It also made me reflect on our current approaches for testing hardforks and other coordinated rollouts and where we can improve. In this post, I am hoping to share a little bit of my view on the current state of our testnets and give some sugg...

2019-11-05T22:41:15+13:00 2019-11-05T22:41:15+13:00 https://lucassaldanha.github.io/posts/transaction-execution-ethereum-yellow-paper-walkthrough-4-7/ Lucas Saldanha

In this post, we will look at how the Ethereum platform executes transactions. We will learn the transaction validity rules and why they exist. After that, we will deep-dive into the transaction execution and understand the steps taken by the node while processing a transaction. This post is the fourth in the series Ethereum Yellow Paper Walkthrough. The goal of this series is to demystify the...

2019-03-04T18:08:19+13:00 2019-03-04T18:08:19+13:00 https://lucassaldanha.github.io/posts/ethereum-yellow-paper-walkthrough-3-7-gas-and-payment/ Lucas Saldanha

Another day, another Ethereum Yellow Paper blog post! In this post, we will learn more about Gas and Payments in Ethereum. We will also brush over the economics behind Ethereum and why fees are so important in the Ethereum ecosystem. After reading this post, we will understand why transaction costs are called gas and what the difference is between gasPrice and gasLimit. We will also understand...

2018-12-11T09:42:00+13:00 2018-12-11T09:42:00+13:00 https://lucassaldanha.github.io/posts/ethereum-yellow-paper-walkthrough-2/ Lucas Saldanha

Hi everyone! This is another post in our series exploring the Ethereum Yellow Paper. In this post, we will learn more about the main objects in Ethereum and their role. We’ll also briefly discuss how Merkle trees are used in Ethereum. I hope that after reading this post, you’ll know what Merkle trees are and the role that they play in Ethereum, what the world state and account state are, and w...

2018-02-14T15:24:31+13:00 2018-02-14T15:24:31+13:00 https://lucassaldanha.github.io/posts/ethereum-yellow-paper-walkthrough-1/ Lucas Saldanha

Hi folks! It’s been a long time without posting anything here. I don’t know if you saw my last update but recently I joined ConsenSys as a Blockchain Protocol Engineer. I’m new to this whole Blockchain world and I’ve been learning lots of things in the past weeks. I’m really excited about this new challenge and I’m having a lot of fun in the process. The idea for this post started when I star...