App Sovereignty

App Sovereignty lets any Solana application launch its own EVM environment with a custom chain ID, custom gas token, and gas revenue that flows to the application — not a shared protocol.

Overview

Each application on Rome gets a sovereign EVM instance:

• Own chain ID — your app is its own chain

• Own gas token — any SPL token (your project token, USDC, SOL)

• Gas revenue — all transaction fees accrue to your treasury

• Full EVM tooling — your users connect MetaMask, your devs use Hardhat/Foundry

• Single state — EVM users and Solana users share the same application state and liquidity

How It Works

1. Register your chain — submit a chain ID and gas token (any SPL mint, or native SOL) through the registration portal

2. Deploy infrastructure — Rome Proxy + Hercules (single-state mode) or add OP-Geth for full Ethereum RPC compatibility

3. Deploy contracts — standard Solidity deployment with Hardhat or Foundry

4. Users connect — MetaMask with your chain ID, or any EVM wallet

Gas Token Pricing

Custom gas tokens are priced via Meteora DAMM V1 pools. The Proxy configuration specifies a price_manager that reads the pool to convert between your gas token and SOL for underlying Solana transaction fees.

# Proxy config for custom gas token
price_manager:
  type: "meteora_damm_v1_pool"
  pool_address: "YOUR_METEORA_POOL_ADDRESS"

Deployment Modes

Mode	Components	Use Case
Single-state	Proxy + Hercules	Simpler, lower latency, direct Solana interaction
OP-Geth	Proxy + Hercules + OP-Geth + Rhea	Full Ethereum RPC compatibility, block explorer support

Use Case: Prediction Market Launches EVM Chain

Orra (Solana prediction market) wants EVM users:
  1. Rome deploys Orra's sovereign EVM with ORRA token as gas
  2. EVM users connect MetaMask, bridge USDC, buy prediction shares
  3. Under the hood: rUSDC (ERC-20) → unwrap to SPL → Orra CPI → buy shares
  4. Orra earns gas fees in ORRA token from every EVM transaction
  5. Single state: Solana users and EVM users see same markets, same liquidity

Status

Live — active product with partners.

What's Next

• Architecture — how Rome EVM works under the hood

• Quickstart — deploy your first contract

• Deploy Solidity — deployment guide for Hardhat and Foundry