Articles

Transaction Execution — Ethereum Yellow Paper Walkthrough (4/7)

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In this post, we start looking into how the Ethereum platform executes transactions. We will learn transaction validity rules and why they exist. After that, we will deep-dive into transaction execution and understand the steps taken by nodes 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 concepts in the paper, making it accessible to a broader audience. If you missed the previous posts, here they are!

Source de l’article sur DZONE

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Building on Ethereum (Part 3): Set Up and Test

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In this series, I’m discussing the phases of a project encompassing a non-trivial set of Ethereum smart contracts and the React/Redux application that communicates with them.

The project, called In-App Pro Shop, aims to help Ethereum developers easily support in-app purchases, and it was written over the last half of 2018 as a way of learning about the Ethereum development ecosystem.

This project revealed many aspects of the power and constraints of Ethereum and its programming language Solidity. I hope to pass as much of that on to you as possible in this series.

Source de l’article sur DZONE

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51% Attack Proves Blockchain Is ‘Unhackable’ The Way The Titanic Was ‘Unsinkable’

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Ethereum BlockchainPhoto credit Flickr/Descryptive.com

Turns out, blockchain technology isn’t quite as foolproof as all the hype would have you believe. A new article from MIT Technology Review explains that as blockchain systems become increasingly complicated, the likelihood that they can – and most assuredly will – be hacked goes through the roof.

Source de l’article sur DZONE

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Building on Ethereum (Part 1): Decisions

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In this series, I’ll be discussing the phases of a project encompassing a non-trivial set of Ethereum smart contracts and the React/Redux application that communicates with them. The project, called In-App Pro Shop, aims to help Ethereum developers easily support in-app purchases, and it was written over the last half of 2018 as a way of learning about the Ethereum development ecosystem. This project revealed many aspects of the power and constraints of Ethereum and its programming language Solidity. I hope to pass as much of that on to you as possible in this series.

The Goal

I wanted to create a system wherein developers of Ethereum-based apps or games with in-app purchases could mint the items they sell as ERC-721 tokens (like CryptoKitties). It would handle most of the heavy lifting so that those developers could get on with the business of writing a kick-ass product.

Source de l’article sur DZONE

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