Interchain Developer Academy

Developer Course

Interchain Developer Academy

Welcome to the Interchain Developer Academy!

Over the next seven weeks, you will dive deep into the interchain ecosystem. Let's get started!

Start learning!Resources

Important program information

Timeline and deadlines

What you will learn

How to get the most out of the Academy

How much time do I need to dedicate to the Academy?

What support will I get in the Academy?

How do I access Discord?

How do I get certified?

Weekly Plan

The Academy runs for seven weeks. You can follow the weekly structure or decide to go your individual path - just make sure to be ready for the Final Exam at the end of the program.

DevOps

Cosmos SDK

IBC

CosmJS

CosmWasm

CometBFT

Ignite-CLI

Cosmos Hub

Concept

Tutorial

Guided Coding

This chapter is completely optional and a good introduction if you are new to blockchain technology or need a refresher on Golang and Docker or a short overview of dev terms you will encounter when working with the Interchain Stack:

Blockchain basics

Golang introduction

Good-to-know dev terms

Docker introduction

You will discover the interchain ecosystem and learn about the main concepts of the Cosmos SDK, from its Tendermint consensus to learning how keys, accounts, and transactions relate to each other. Dive into:

Blockchain technology and the interchain

The interchain ecosystem

Interchain use cases

Getting ATOM and staking it

Blockchain app architecture

Accounts

Transactions, messages, and modules

Protobuf

Multistore and keepers

BaseApp

Queries, events, and context

You will discover how to run a node and learn how to build your own chain by following the example implementation of a checkers blockchain, first natively and then with Ignite CLI:

Set up your work environment

Run a node, API, and CLI

SDK v0.50 native preparation

Build your v0.50 module

Add your first object

Add your first message

Add your first query

Introduction to Ignite CLI

Exercise - Make a checkers blockchain

Store a game

Create your first message

Create and save a game

Add a way to make a move

Emit game events

Record the game winners

Exam Coding Exercise 1

You will dive into IBC to learn more about cross-chain communication and take a look at how to use CosmJS for your chain:

What is IBC?

IBC/TAO - connections, channels, and clients (OPTIONAL)

IBC token transfer

Interchain accounts (OPTIONAL)

IBC middleware (OPTIONAL)

IBC tooling

What is CosmJS?

Your first CosmJS actions

Compose complex transactions

Learn to integrate Keplr

Create custom CosmJS interfaces

Exam Coding Exercise 2

You will dive deeper into customizing the checkers blockchain to make your game more interesting and unique with Ignite, while also testing and expanding your IBC knowledge to:

Keep a game deadline

Keep a move count

Put your games in order

Auto-expiring games

Let players set a wager

Handle wager payments

Integration tests

Incentivize players

Help find a correct move

Play with cross-chain tokens

Understand IBC denoms

Go relayer

Hermes relayer

Exam Coding Exercise 3

You will build on your previous work with CosmJS to implement a sound game GUI and a backend script that improves the user experience by:

Create custom objects

Create custom messages

Get an external GUI

Integrate CosmJS and Keplr

Backend script for game indexing

Exam Coding Exercise 4

Ready for an IBC deep dive? In this chapter, you will further deepen your knowledge of IBC by looking into:

IBC app developer introduction

Make a module IBC-enabled

Adding packet and acknowledgement data

Extend the checkers game with a leaderboard

Create a leaderboard chain

IBC Operation Exercise

In this chapter, you will build on your previous work for the checkers blockchain to adapt your blockchain to the demands of running in production:

Run in Production

Prepare the software to run

Prepare a validator and keys

Prepare where the node starts

Prepare and connect to other nodes

Configure, run, and set up a service

Prepare and do migrations

Simulate production in Docker

Tally player info after production

Add a leaderboard as a module

Migrate the leaderboard module after production

Simulate production migration with Docker Compose

Developer Resources

Cosmos SDK

A framework to build application-specific blockchains

Documentation

CometBFT

Blockchain consensus engine and application interface

Documentation

Cosmos Hub

First interconnected public blockchain in the Interchain network

Documentation

IBC

Industry standard protocol for inter-blockchain communication

Documentation

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Documentation

Cosmos SDK Cosmos Hub CometBFT IBC Protocol

Community

Interchain blog Forum Discord

Contributing

Source code on GitHub

Interchain Developer Academy

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