Prerequisites

Before setting up Dong Chain development environment, ensure you have the following.

Hardware Requirements

Component	Minimum	Recommended
CPU	8 cores	16+ cores
RAM	32 GB	64 GB
Storage	1 TB NVMe	2 TB NVMe
Network	100 Mbps	1 Gbps
GPU (ZK prover only)	NVIDIA RTX 3080	NVIDIA A100

Note: The 1TB minimum is for running Bitcoin + OmniCore full node. For contract development only (no Bitcoin node), 100 GB SSD is sufficient.

Operating System

• Linux (Ubuntu 22.04 LTS recommended)
• macOS 13+ (for local development, not production)
• Windows WSL2 (development only)

Required Software

Rust Toolchain

# Install rustup
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
source ~/.cargo/env

# Install required targets and components
rustup update stable
rustup target add riscv32e-unknown-none-elf     # For RISC-V contract compilation
rustup target add wasm32-unknown-unknown        # For Substrate runtime WASM
rustup component add rust-src clippy rustfmt

# Verify
rustc --version   # >= 1.78.0
cargo --version

Substrate Build Dependencies

# Ubuntu/Debian
sudo apt-get update && sudo apt-get install -y \
    build-essential \
    clang \
    curl \
    git \
    libssl-dev \
    llvm \
    pkg-config \
    protobuf-compiler \
    cmake

# macOS
brew install cmake llvm openssl protobuf

resolc (Revive Solidity Compiler)

# Install from source
cargo install resolc

# Or download binary release (check GitHub releases)
# https://github.com/paritytech/resolc/releases

resolc --version   # Verify installation

Bitcoin Core + OmniCore

# Ubuntu
sudo add-apt-repository ppa:bitcoin/bitcoin
sudo apt-get update
sudo apt-get install bitcoind

# OmniCore (replaces bitcoind)
# Download from: https://github.com/OmniLayer/omnicore/releases
wget https://github.com/OmniLayer/omnicore/releases/download/v0.12.0/omnicore-0.12.0-x86_64-linux-gnu.tar.gz
tar -xzf omnicore-*.tar.gz
sudo mv omnicore-*/bin/* /usr/local/bin/

Node.js & npm (for Hardhat/Bundler)

# NVM recommended
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash
nvm install 20
nvm use 20
node --version   # >= 20.0.0
npm --version

Foundry

curl -L https://foundry.paradigm.xyz | bash
foundryup
forge --version   # >= 0.2.0
cast --version

Knowledge Prerequisites

Area	Level Required	Resources
Rust programming	Intermediate	The Rust Book
Substrate/Polkadot basics	Beginner	Substrate Docs
Solidity smart contracts	Intermediate	Solidity Docs
Ethereum JSON-RPC	Basic	Ethereum JSON-RPC Spec
Bitcoin/UTXO model	Basic	Bitcoin Developer Guide
ERC-4337 Account Abstraction	Basic	ERC-4337 Spec

Development Tools (Optional but Recommended)

# cargo-contract (for ink! contracts, optional)
cargo install cargo-contract

# subkey (Substrate key generation)
cargo install subkey

# polkadot-js/api (JavaScript SDK)
npm install -g @polkadot/api

# cast (Foundry transaction tool)
# included with foundry

Next Steps

→ Environment Setup