Getting started with Geth to run an Ethereum node. Geth, short for Go Ethereum, is a command line client application…
Libraries in Solidity smart contracts
What are Solidity libraries Libraries in Solidity smart contracts are blocks of reusable code. They contain functions used by other…
Optimistic Ethereum layer 2 network
In this tutorial we will explain how to use Optimistic Ethereum layer 2 Mainnet and Testnet. We will review how…
Multiple ways to upgrade a Solidity smart contract
There are situations when you want to upgrade a Solidity smart contract. You might want to fix a software vulnerability,…
Ether balance in MicroPython on an ESP32 board
In this tutorial we will capture an Ether balance in MicroPython on an ESP32 board. We will write Python code…
Hide Solidity code with an external contract
How to hide Solidity code with an external contract. In Solidity a contract can reference the code of another contract.…
Crypto prices in MicroPython on an ESP32 board
The objective of this tutorial is to capture real time crypto prices in MicroPython running on an ESP32 board. We…
How to use MicroPython with a ESP32 board
In this tutorial you will learn how to use MicroPython with a ESP32 microcontroller development board. These instructions will help…