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Version: v0.50.x

Overview

Synopsis

Building your first Cosmos-SDK blockchain with Spawn. This tutorial focuses on a 'nameservice' where you set your account to a name you choose.

  • Generating a new chain
  • Creating a new module
  • Adding custom logic
  • Run locally
  • Interacting with the network

Prerequisites​

Generate a New Chain​

Let's create a new chain called 'rollchain'. You are going to set defining characteristics such as

  • Which modules to disable from the template if any
  • Proof of Stake consensus
  • Wallet prefix (bech32)
  • Token name (denom)
  • Binary executable (bin)
spawn new rollchain --consensus=pos --disable=cosmwasm --bech32=roll --denom=uroll --bin=rolld

🎉 Your new blockchain 'rollchain' is now generated!

Scaffold the Module​

Now it is time to build the nameservice module structure.

Move into the 'rollchain' directory and generate the new module with the following commands:

# moves into the rollchain directory you just generated
cd rollchain

# scaffolds your new nameservice module
spawn module new nameservice

This creates a new template module with the name nameservice in the x and proto directories. It also automatically connected to your application and is ready for use.