dev-resources

A list of great resources to get you going with building dApps using Rust/CosmWasm and CosmJS as well as other tools 😊

Overview of the Cudos stack:

The Cudos network is a smart-contract-enabled, layer-1 Cosmos blockchain, which facilitates a network of compute infrastructure for running Virtual Machines.

It is the perfect place to build powerful decentralised applications (dApps) with access both to the consensus-driven underlying blockchain, as well as the cloud infrastructure for the elements of an application that don't require a distributed ledger.

Your flow for building dApps with Cudos:

1. Get yourself a Cudos wallet address with the help of this guide.
2. Write a smart contract in Rust, compiled to CosmWasm.
3. Deploy your smart contract to the blockchain and initialise it, follow the guide here.
4. Build a frontend application to interact with the blockchain and your contract on it from a neat UI. These interactions are made using CosmJS to the blockchain, which you can think of simply as a database underlying a traditional application.
5. Deploy your frontend application onto the CudoCompute network in order to host your dApp.

Great resources for each of:

Cudos (The blockchain and compute platform):

• The Go-To: Cudos Docs
• cudos-blast Contract Deployment and Interaction Tool
• Cudos Sample Contracts and Code
• Cudos Node Repo

Rust (The language used for Cudos smart contracts):

• The Go-To: The Rustlang Book
• Let's Get Rusty YouTube Channel
• Intro to Command Line Apps in Rust

CosmWasm (The smart contract platform that yor Rust contracts are compiled to):

• The Go-To: CosmWasm Documentation
• Area-52 CosmWasm Tutorial

CosmJS (The frontend library for interacting with Cosmos blockchains from a UI):

• The Go-To: CosmJS Documentation
• create-cosmos-app dApp Frontend Scaffold Tool from Cosmology

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Run create-cosmos-app on CudoCompute:

Get set up on CudoCompute:

1. Register an account at CudoCompute
2. Add an SSH key per the documentation
3. Create a project as per the documentation
4. Browse to the project and follow this video to create a Virtual Machine. Note: select Ubuntu Minimal 20.04
5. SSH into the machine.
6. (leave feedback on the CudoCompute platform!)

Install create-cosmos-app on Ubuntu 20.04

Follow the the guide in this video with the text steps below:

1. Update the package manager (press 1 when prompted to):

apt-get update && apt-get -y upgrade

2. curl node:

curl -fsSL https://deb.nodesource.com/setup_19.x | sudo -E bash -

3. Use apt-get to install nodejs and git:

sudo apt-get install -y nodejs

sudo apt-get install -y git

4. Use npm to install yarn and create-cosmos-app (npm package here):

npm install --global yarn

npm install -g create-cosmos-app

5. Run create-cosmos-app:

create-cosmos-app

6. Name your app and set multi-chain:

? [name] Enter your new app name: my-app

Cloning into 'my-app'...

? [template] which template (Use arrow keys)

> connect-multi-chain

(you may need to now wait a while)

7. Change directory into your application folder and run yarn:

cd my-app

yarn && yarn dev

8. Open the IP of your server in a web browser on port 3000, eg (http://34.246.34.92:3000)
9. (Share any feedback you might have about CudoCompute here)