Parachain Guide Resources

This is meant to be followed with the Parachain Development Guide by W3F. Be sure to set the substrate-parachain-template to version This repository contains the compiled runtimes, JSON, and SCALE encoded chain specifications for quickly running a local, native relay and parachain setup.

This is primarily for learning purposes and to learn at a more granular level how to provision networks from scratch. For a more ready-made solution to provision and spawn networks which includes a CLI, please use Zombienet.

Parachain

The parachain here is based off of the Cumulus template: substrate-parachain-template. It is able to be modified and compiled if needed:

# Make sure you're in the correct branch/version (1.0.0)
cd substrate-parachain-template/
git checkout polkadot-v1.0.0
git switch -c parachain-v1.0.0

# Build the chain
cargo build --release

# Build initial chain spec 
./target/release/parachain-template-node build-spec > ../parachain/parachain_chain_spec.json  

# Build the raw chain spec
./target/release/parachain-template-node build-spec --chain ../parachain/parachain_chain_spec.json --disable-default-bootnode --raw > ../parachain/parachain_chain_spec_raw.json

# Compile the Wasm bundle
./target/release/parachain-template-node export-genesis-wasm --chain ../parachain/parachain_chain_spec_raw.json parachain-wasm

# Compile the genesis bundle
./target/release/parachain-template-node export-genesis-state --chain ../parachain/parachain_chain_spec.json ../parachain/parachain-genesis-state 

Chain Specification

The chain specification is based off of the default template. If you wish to modify this, consider recompiling the node and regenerating as per above.

Runtime & Genesis

Both are based off of the default template with no added modifications.

Relay Chain

The relay chain configuration is a rococo_local testnet. The relay chain does not need much - but you must have the polkadot binary installed and in your path in order to successfully run the commands.