layout: ModuleLandingPage main: true order: 0 hideResources: true tools:

• title: Cosmos SDK description: A framework for building public blockchains. links:
  • name: Learn more url: https://v1.cosmos.network/sdk
  • name: Documentation url: https://docs.cosmos.network/ image: /cosmos-sdk-icon.svg
• title: CometBFT description: Blockchain consensus engine using the Tendermint algorithm. links:
  • name: Learn more url: https://docs.cometbft.com/v0.37/
  • name: Documentation url: https://docs.cometbft.com/v0.37/core/ image: /tendermint-icon.svg
• title: Ignite CLI description: All-in-one platform to build, launch, and maintain apps on a sovereign and secured blockchain. links:
  • name: Learn more url: https://ignite.com/cli
  • name: Documentation url: https://docs.ignite.com image: /ignitecli-icon.svg
• title: IBC description: Industry standard protocol for inter-blockchain communication. links:
  • name: Learn more url: https://ibcprotocol.dev/
  • name: Documentation url: https://ibc.cosmos.network/ image: /ibc-icon.svg
• title: CosmWasm description: Smart contracting platform built for the Interchain Ecosystem. links:
  • name: Learn more url: https://cosmwasm.com/
  • name: Documentation url: https://docs.cosmwasm.com/docs image: /cosmwasm-icon.svg
• title: Cosmos Hub description: Software powering Cosmos Hub, the heart of the Interchain network, and home of the ATOM token. links:
  • name: Documentation url: https://hub.cosmos.network/ image: /generic-star-icon.svg articles:
• title: How-to Cosmos Pt. 4- Building your first application with CosmJS date: Sunday, June 4 time: 8 url: https://bit.ly/43wVQne image: /article-banner-02.png
• title: The Mind, Body, and Soul of Cosmos. date: Friday, May 27 time: 6 url: https://blog.cosmos.network/the-mind-body-and-soul-of-cosmos-140ee7cec0cd image: /article-banner-01.png
• title: "ELI5: What is IBC?" date: Tuesday, Nov 15 time: 7 url: https://medium.com/the-interchain-foundation/eli5-what-is-ibc-def44d7b5b4c image: /article-banner-04.jpg intro:
• overline: Begin Your Interchain Journey title: Developer Portal image: /graphics-sdk-course.png description: | The Interchain is a network of interoperable blockchains built on BFT consensus.
  
  The ever-expanding ecosystem provides an SDK, tokens, wallets, applications, and services. Discover the Cosmos SDK to develop application-specific blockchains.
  
  Ready to begin your journey? action: label: Start url: /academy/1-what-is-cosmos/index.html secondtext: | This is a beta version of the Developer Portal that will help you take your first steps with the Cosmos SDK.
  We would be grateful for your feedback. At the end of each are three icons to rate the page and a small box where you can give us feedback about things to improve. Enjoy your journey through the portal and good luck with the HackAtom! overview: overline: Frequently Asked Questions title: FAQ items:
  • title: Is this portal for me? description: | This portal offers an overview of the Interchain Stack (the Cosmos SDK, Ignite, CosmJS, etc.), as well as examples and exercises to help developers get a quick start.
  • title: How should I go through the portal? description: | The portal content unfolds the Interchain universe, beginning with a big-picture perspective and getting into how to create your application-specific blockchain with the Cosmos SDK. The introductory chapters give you a solid overview of the Cosmos SDK, its concepts, and dApps built on the Interchain Stack, while the hands-on exercises put theory into practice – showcasing how to address application concerns when developing such as managing gas fees, working with Ignite CLI, running a node, and making a chain IBC-enabled. A look into all chapters is recommended, as a basic understanding helps when things get tricky.
    You can follow your own path or go through the content chronologically. To follow your own path, select the tags for the subjects you are interested in and all the chapters and sections relating to that subject will be displayed.
    Additionally, you can select a version of the portal if you want to explore the content in a specific Interchain Stack version. For more information on which stack version is used in the different versions of the portal, please go to the page on Platform Versions. In general, we do recommend using the most current version.
  • title: What do I need to know? description: | For the conceptual, high-level sections, you should have a solid understanding of blockchain technology and be familiar with decentralized applications. The deep dives are specially designed for experienced developers.
  • title: How long will it take? description: | With the concept sections, you will gain a solid understanding of Cosmos and the Interchain Stack. This might be a matter of just a couple of hours. The time you spend on the other chapters and the hands-on exercise depends on you – there are endless possibilities to discover.
    
    Welcome to the Interchain!

customModules:

• title: All there is to discover description: | The portal has three different sections, with content to take you through the fundamentals of the Interchain, dive deeper in the tutorials, and apply your conceptual knowledge in the hands-on exercise chapters. useNarrowCards: true hideFilter: true image: /lp-images/ida_dev_portal_lp_background-00.png imageLightMode: /lp-images/ida_dev_portal_lp_background-00.png sections:

  • image: title: Introduction to the Interchain href: /academy/1-what-is-cosmos/ description: | From a high-level overview of the Interchain Ecosystem to the main concepts of the Cosmos SDK and IBC, take a look at these more conceptual introductions to begin your journey. tags:
    • concepts
  • image: title: Hands-on Exercise href: /hands-on-exercise/1-ignite-cli/ description: | Work with the full Interchain Stack while developing a checkers game blockchain with Ignite CLI, CosmJS and IBC, and preparing your chain to run in production. tags:
    • guided-coding
  • image: title: Tutorials href: /tutorials/1-tech-terms/ description: | Dive into these tutorials to help get you started and to take a more detailed look at IBC, CosmJS, and some of the other SDK modules. The tutorials walk you through code examples to translate interchain concepts into practice.

• title: Introduction to the Interchain description: | Discover the interchain ecosystem, Cosmos SDK, and IBC. Feel free to start with the first chapter, or select one or more tags to filter the available content. sections:

  • image: /lp-images/ida_dev_portal_lp_hero-05.png title: What is the interchain? href: /academy/1-what-is-cosmos/ description: | Get a fast overview of: links:
    • title: Blockchain technology and the interchain path: /academy/1-what-is-cosmos/1-blockchain-and-cosmos.html
    • title: The interchain ecosystem path: /academy/1-what-is-cosmos/2-cosmos-ecosystem.html
    • title: Interchain use cases path: /academy/1-what-is-cosmos/3-interchain-use-cases.html
    • title: Getting ATOM and staking it path: /academy/1-what-is-cosmos/4-atom-staking.html

      - {} Example of section break

  • image: /lp-images/cosmos_dev_portal_module-03-lp-new.png title: Interchain concepts href: /academy/2-cosmos-concepts/ description: | This chapter includes an introduction to the main concepts underlying the Interchain Stack and Cosmos SDK: links:
    • title: Blockchain app architecture path: /academy/2-cosmos-concepts/1-architecture.html tags:
      • concepts
      • cometbft
      • cosmos-sdk
    • title: Accounts path: /academy/2-cosmos-concepts/2-accounts.html
    • title: Transaction, messages, and modules path: /academy/2-cosmos-concepts/3-transactions.html
    • title: Protobuf path: /academy/2-cosmos-concepts/6-protobuf.html
    • title: Multistore and keepers path: /academy/2-cosmos-concepts/7-multistore-keepers.html
    • title: BaseApp path: /academy/2-cosmos-concepts/8-base-app.html
    • title: Queries, events, and context path: /academy/2-cosmos-concepts/9-queries.html
    • title: Testing path: /academy/2-cosmos-concepts/12-testing.html
    • title: Relaying with IBC path: /academy/2-cosmos-concepts/13-relayer-intro.html
    • title: Interchain Security path: /academy/2-cosmos-concepts/14-interchain-security.html
    • title: Bridges path: /academy/2-cosmos-concepts/15-bridges.html
    • title: Migrations path: /academy/2-cosmos-concepts/16-migrations.html
  • image: /lp-images/ida_dev_portal_lp_hero-04-b.png title: Introduction to IBC href: /academy/3-ibc/ description: | This chapter will give you an understanding of the Inter-Blockchain Communication Protocol including: links:
    • title: What is IBC? path: /academy/3-ibc/1-what-is-ibc.html
    • title: IBC/TAO - connections, channels, and clients path: /academy/3-ibc/2-connections.html
    • title: Light client development path: /academy/3-ibc/5-light-client-dev.html
    • title: Solo machine client path: /academy/3-ibc/6-solomachine.html
    • title: IBC token transfer path: /academy/3-ibc/7-token-transfer.html
    • title: Interchain accounts path: /academy/3-ibc/8-ica.html
    • title: IBC middleware path: /academy/3-ibc/9-ibc-mw-intro.html
    • title: IBC tooling path: /academy/3-ibc/12-ibc-tooling.html

• title: Tutorials description: | Get started and explore IBC, CosmJS, and Cosmos SDK modules. Feel free to start with the first chapter, or select one or more tags to filter the available content. sections:

  • image: title: Good-to-know dev terms href: /tutorials/1-tech-terms/ description: | From gRPC to Protobuf - a brief overview of dev terms you encounter in the interchain ecosystem. links:
  • image: title: Set up your work environment href: /tutorials/2-setup/ description: | Find out what you should install on your machine to work with the Cosmos SDK and work on the hands-on exercises.
  • image: title: Run a node, API, and CLI href: /tutorials/3-run-node/ description: | Take your first steps with simapp and get your first node for a Cosmos blockchain running.
  • image: title: Golang introduction href: /tutorials/4-golang-intro/ description: | Take your first steps with Go to discover the basics, including a look at Go interfaces, structures, arrays, slices, and much more.
  • image: title: Docker introduction href: /tutorials/5-docker-intro/ description: | Learn enough about Docker so as to conveniently do the hands-on exercises.
  • image: title: IBC developers href: /tutorials/6-ibc-dev/ description: | Want to become an IBC developer? Take a closer look at IBC denoms.
  • image: /lp-images/ida_dev_portal_lp_hero-09.png title: Introduction to CosmJS href: /tutorials/7-cosmjs/ description: | Want to integrate frontend user interfaces and backend servers with your Cosmos chain? Take a closer look at: links:
    • title: What is CosmJS? path: /tutorials/7-cosmjs/1-cosmjs-intro.html
    • title: Your first CosmJS actions path: /tutorials/7-cosmjs/2-first-steps.html
    • title: Compose complex transactions path: /tutorials/7-cosmjs/3-multi-msg.html
    • title: Learn to integrate Keplr path: /tutorials/7-cosmjs/4-with-keplr.html
    • title: Create custom CosmJS interfaces path: /tutorials/7-cosmjs/5-create-custom.html
  • image: /lp-images/ida_dev_portal_lp_hero-06.png title: Understand SDK modules href: /tutorials/8-understand-sdk-modules/ description: | Discover several tutorials on specific SDK modules: links:
    • title: The authz module path: /tutorials/8-understand-sdk-modules/1-authz.html
    • title: The feegrant module path: /tutorials/8-understand-sdk-modules/2-feegrant.html
    • title: The group module path: /tutorials/8-understand-sdk-modules/3-group.html
    • title: The gov module path: /tutorials/8-understand-sdk-modules/4-gov.html
  • image: /lp-images/ida_dev_portal_lp_hero-07.png title: The path to production href: /tutorials/9-path-to-prod description: | Prepare your blockchain to run in production: links:
    • title: Run in production path: /tutorials/9-path-to-prod/1-overview.html
    • title: Prepare the software to run path: /tutorials/9-path-to-prod/2-software.html
    • title: Prepare a validator and keys path: /tutorials/9-path-to-prod/3-keys.html
    • title: Prepare where the node starts path: /tutorials/9-path-to-prod/4-genesis.html
    • title: Prepare and connect to other nodes path: /tutorials/9-path-to-prod/5-network.html
    • title: Configure, run, and set up a service path: /tutorials/9-path-to-prod/6-run.html
    • title: Prepare and do migrations path: /tutorials/9-path-to-prod/7-migration.html

• title: Hands-on Exercise description: | From zero to hero - work with the full Interchain Stack while developing a checkers game blockchain. Feel free to start with the first chapter, or select one or more tags to filter the available content. sections:

  • image: /lp-images/cosmos_dev_portal_module-04-lp.png title: SDK v0.50 native href: /hands-on-exercise/0-native/ description: | Do the minimum to develop a checkers blockchain natively with Cosmos SDK v0.50: links:
    • title: Preparation path: /hands-on-exercise/0-native/1-preparation.html
    • title: Build your module path: /hands-on-exercise/0-native/2-build-module.html
    • title: Add your first object path: /hands-on-exercise/0-native/3-add-game.html
    • title: Add your first message path: /hands-on-exercise/0-native/4-add-message.html
    • title: Add your first query path: /hands-on-exercise/0-native/5-add-query.html
  • image: /lp-images/cosmos_dev_portal_module-05-lp.png title: Ignite CLI basics href: /hands-on-exercise/1-ignite-cli/ description: | Get started with Ignite CLI and begin developing a checkers blockchain: links:
    • title: Introduction to Ignite CLI path: /hands-on-exercise/1-ignite-cli/1-ignitecli.html
    • title: First steps for your checkers blockchain path: /hands-on-exercise/1-ignite-cli/2-exercise-intro.html
    • title: Store object path: /hands-on-exercise/1-ignite-cli/3-stored-game.html
    • title: Create custom messages path: /hands-on-exercise/1-ignite-cli/4-create-message.html
    • title: Create and save a game path: /hands-on-exercise/1-ignite-cli/5-create-handling.html
    • title: Add a way to make a move path: /hands-on-exercise/1-ignite-cli/6-play-game.html
    • title: Emit game information path: /hands-on-exercise/1-ignite-cli/7-events.html
    • title: Record the winners path: /hands-on-exercise/1-ignite-cli/8-game-winner.html
  • image: /lp-images/ida_dev_portal_lp_hero-02.png title: Ignite CLI advanced href: /hands-on-exercise/2-ignite-cli-adv/ description: | Continue developing your checkers blockchain with Ignite by: links:
    • title: Keep an up-to-date game deadline path: /hands-on-exercise/2-ignite-cli-adv/1-game-deadline.html
    • title: Keep track of moves being played path: /hands-on-exercise/2-ignite-cli-adv/2-move-count.html
    • title: Put your games in order path: /hands-on-exercise/2-ignite-cli-adv/3-game-fifo.html
    • title: Enforce auto-expiring of games path: /hands-on-exercise/2-ignite-cli-adv/4-game-forfeit.html
    • title: Let players set a wager path: /hands-on-exercise/2-ignite-cli-adv/5-game-wager.html
    • title: Handle wager payments path: /hands-on-exercise/2-ignite-cli-adv/6-payment-winning.html
    • title: Integration tests path: /hands-on-exercise/2-ignite-cli-adv/7-integration-tests.html
    • title: Incentivize players path: /hands-on-exercise/2-ignite-cli-adv/8-gas-meter.html
    • title: Help find a correct move path: /hands-on-exercise/2-ignite-cli-adv/9-can-play.html
    • title: Play with cross-chain tokens path: /hands-on-exercise/2-ignite-cli-adv/10-wager-denom.html
  • image: /lp-images/ida_dev_portal_lp_hero-08.png title: CosmJS advanced href: /hands-on-exercise/3-cosmjs-adv/ description: | Apply your knowledge of CosmJS to the checkers blockchain exercise. You will: links:
    • title: Create custom objects path: /hands-on-exercise/3-cosmjs-adv/1-cosmjs-objects.html
    • title: Create custom messages path: /hands-on-exercise/3-cosmjs-adv/2-cosmjs-messages.html
    • title: Get an external GUI path: /hands-on-exercise/3-cosmjs-adv/3-external-gui.html
    • title: Integrate CosmJS and Keplr path: /hands-on-exercise/3-cosmjs-adv/4-cosmjs-gui.html
    • title: Use CosmJS for game indexing path: /hands-on-exercise/3-cosmjs-adv/5-server-side.html
  • image: /lp-images/universe.png title: From code to MVP to production href: /hands-on-exercise/4-run-in-prod/ description: | Show your checkers blockchain to investors and progressively the world: links:
    • title: Simulate a production setup with Docker Compose path: /hands-on-exercise/4-run-in-prod/1-run-prod-docker.html
    • title: Tally player info after production path: /hands-on-exercise/4-run-in-prod/2-migration-info.html
    • title: Add a leaderboard as a module path: /hands-on-exercise/4-run-in-prod/3-add-leaderboard.html
    • title: Migrate the leaderboard module after production path: /hands-on-exercise/4-run-in-prod/4-migration-leaderboard.html
    • title: Simulate a migration in production with Docker Compose path: /hands-on-exercise/4-run-in-prod/5-migration-prod.html
  • image: /lp-images/ida_dev_portal_lp_hero-03.png title: IBC advanced href: /hands-on-exercise/5-ibc-adv/ description: | Test your IBC knowledge by developing your checkers blockchain further: links:
    • title: Go relayer path: /hands-on-exercise/5-ibc-adv/1-go-relayer.html
    • title: Hermes relayer path: /hands-on-exercise/5-ibc-adv/2-hermes-relayer.html
    • title: IBC app development introduction path: /hands-on-exercise/5-ibc-adv/3-ibc-app-intro.html
    • title: Make a module IBC-enabled path: /hands-on-exercise/5-ibc-adv/4-ibc-app-steps.html
    • title: Add packet and acknowledgement data path: /hands-on-exercise/5-ibc-adv/5-ibc-app-packets.html
    • title: Extend the checkers game with a leaderboard path: /hands-on-exercise/5-ibc-adv/6-ibc-app-checkers.html

    • title: Create a leaderboard chain path: /hands-on-exercise/5-ibc-adv/7-ibc-app-leaderboard.html

This repo contains the code and content for the Developer Portal and the Interchain Developer Academy.

Note: The layout metadata at the top of the README.md file controls how the tutorial page is published. Write permissions are limited to preserve the structure and contents.

These tutorials guide you through actionable steps and walk-throughs to teach you how to use the Interchain Stack. The Interchain Stack is the world’s most popular framework for building application-specific blockchains, it consists of several products:

• Cosmos SDK, a modular framework to build blockchain applications
• IBC, the Inter-Blockchain Communication protocol that allows blockchains to communicate
• Tendermint, the algorithm that provides the consensus and networking layer for your blockchain application through CometBFT

The Developer Portal contains three types of content:

• Concepts, informational content explaining how the Interchain Stack functions
• Individual Tutorials, short tutorials to get you up to speed with individual components
• Checkers Game, a modular tutorial that covers the full stack and teaches you every element from set-up to launching in production with a front-end application attached.

Going through the entire content will teach you about:

• Blockchain technology and cryptography
• Developing with the Cosmos SDK & Ignite CLI
• The CometBFT consensus algorithm
• The Inter-Blockchain Communication Protocol
• Building front- and backends with CosmJS
• Integrating wallets such as Keplr
• Relaying in the interchain network

The code and docs for each tutorial are based on a specific version of the software. Be sure to follow the tutorial instructions to download and use the right version.

Use the tutorials landing page as your entry point to articles on the Interchain blog, videos on Interchain YouTube, and ways to get help and support.

This repo manages and publishes the developer platform. If you would like to contribute, please take a look at our CONTRIBUTION GUIDELINES and /developer-portal/TECHNICAL-SETUP documents.

Deployment

The main developer portal at https://tutorials.cosmos.network (and https://developers.cosmos.network/) is deployed with GitHub Pages. The IDA deployment at https://ida.interchain.io/ and both preview deployments are processes by Netlify.