Tag: Ethereum

Whenever we need to query data from the blockchain, we fetch it from a node. An archive node differs from a full node since the first holds the entire history of network transactions. Thus, some queries for older block transactions cannot be fetched easily on a full node. In this tutorial, we will programmatically fetch data from the blockchain, switching between full and archive nodes when necessary.

In the third part of the brownie tutorial series, we dive deep into testnets, we show you how to configure certain aspects of your project and we will also see how to use the brownie mixes feature for building projects.

The tutorial shows you how to build a simple Web3 dashboard using web3.py, google sheets and the data from EVM-based blockchains.

How to use GraphQL to fetch pending transaction data from Geth. And compares GraphQL and JSON-RPC in terms of speed and data size.

In this comprehensive step-by-step guide, you will learn how The Merge impacts Ethereum’s application and infrastructure layer, the 5 most common merge-misconceptions, and what you need to do with your DApp and your nodes for a smooth transition to proof-of-stake.

Chainlink is one of the most popular decentralized oracles in DeFi today, while Foundry is an up and coming smart contract development framework that promises blazing fast speeds. Learn a bit about both in this tutorial by deploying a chainlink smart contract using Foundry.