This Learning Community will be your starting point for ethereum development. Within it you will build your first decentralized application, reading and writing data to the Ethereum Blockchain.

Ethereum Development 101

In this community we will build together a dApp, a decentralized meme registry and deploy it to the ethereum blockchain.

In this chapter we will build the frontend for our dApp.

Frontend development of the dapp

In this chapter you will get a very short theoretical intro to dApps. Learn more about smart contracts and blockchains in our Introduction to Blockchain community.

What are dApps?

In this chapter, you will learn the basics of smart contracts and build the foundation for our dApp.

Programming smart contracts

In this video, we will set up our environment to build the UI for our dApp.

Youtube Video by dacade

Environment setup

In this first part of our UI development, we will build our HTML frame and connect to our smart contract.

Html for the dApp

In this video, we will connect our dApp through the Ethereum API to the Ethereum Kovan Blockchain.

Connecting the dApp to ethereum

In this final video of our tutorial, insert and retrieve data from our smart contracts through our frontend.

DApp interaction with the smart contract

In this video we are explaining the challenges, advantages and use cases decentralised applications have.

In this video, we are introducing the solidity IDE remix.

Introduction to remix

We are starting to build our first contract and have a look and variables, types, visibility and functions. ⚠️ Update: You need to change the compiler version in the compile tab to: “v0.4.25+commit.59dbf8f1.js” or lower, under “Select new compiler version”.

Variables, types, visibility and functions

In this video, we will look into structs and mappings.

Structs and mappings

We are going to look into solidity events and finish our code so we can use it with our UI.

Events and optimization

In this video, we will deploy our smart contract to the Ethereum Kovan Testnet through Metamask.