Chainstack Blog

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

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.

An overview of Lens Protocol, how it works and building a simple application with Lens API, React.js, and Tailwind CSS.

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.

Ape is a Python smart contract development and testing framework by ApewWorX, focusing on a modular approach.

This article is about using python to analyse data from Raydium – a popular DEX on Solana. In this tutorial you will learn how blockchain AMM handles token exchange.