Learn Sophia contract development and build Aeternity Dapps.

Æternity Development 101

Learn Aeternity development basics and build a voting Dapp.

In this community, we will learn about æternity and build a meme voting dæpp on top of the æternity blockchain.

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

What is æternity?

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

Sophia voting contract

In this chapter, we will build the frontend for our dæpp.

Frontend development of the dæpp

This course is for everybody who wants to get started with Aeternity development. In this course, you learn how to build an Aeternity application, you can earn Dacade coins for building your own application and you get feedback on it from your peers.

Why should I do this course?

You can earn dacade coins for making a successful submission to the challenge of the course and for giving your peers valuable feedback on their submissions If you need an idea what to build or are stuck ask on our <a href='https://t.me/dacade'>telegram</a>.

How can I earn something in this course?

In this video, we are giving a brief explanation of the challenges of smart contract platforms and æternitys response to them.

Youtube Video by dacade

Intro to æternity

In this video, we are giving a brief introduction to functional programming and explain why this is interesting for smart contracts.

Functional programming for smart contracts

In this video, we are explaining one of the most promising scaling solutions, state channels.

State channels on æternity (OPTIONAL)

In this video, we are showing you how blockchain oracles can add real-world data to the æternity blockchain.

Blockchain oracles on æternity (OPTIONAL)

Slides

Beginner Sophia Class ORT Montevideo Uruguay

In this video, we are introducing the aeternity smart contract editor and its functionalities.

Intro to the smart contract editor

In this video, we will build our first contract that can write to the aeternity blockchain and retrieve data from it. We will also learn about the state, types and functions of our contract.  ⚠️ Update:  When you enter a string as an argument in the contract editor you no longer need quotation marks as described in the videos. Instead of “url.com”, it’s url.com.

Enter and retrieve an URL from the blockchain

In this video, you will learn about maps, records and addresses in Sophia. We will further develop our smart contract and make it possible to store and retrieve multiple memes with multiple data types.

Store multiple memes with multiple values

In this video, we will finalise our contract and enable the user to vote on memes with their aeternity token.

Vote on memes with aeternity token

Advanced Sophia Class ORT Montevideo Uruguay

In this video, we will create the HTML and CSS for our dæpp.

HTML and CSS of the dæpp

In this video, we will add the javascript part for our dapp to enable some interactivity for our users. We will build a template using the mustache.js library.

Javascript of the dæpp

In this video, we will host our dæpp on GitHub and finally connect our frontend to our Sophia contract on the æternity testnet.  ⚠️Currently the baseapp is not working with the latest version of the sdk, so please load version 6.1.2 instead: https://unpkg.com/@aeternity/aepp-sdk@6.1.2/dist/aepp-sdk.browser-script.js

Connecting our dæpp to æternity

In this video, we will finalise our frontend and enable voting and registration functionality.