Arc — Testnet (USDC / Meridian)

Arc is an EVM-compatible testnet where Heron deploys a Solidity vault that allocates USDC into the Meridian lending protocol.

Overview

How It Works

1. User connects EVM wallet
2. Deposits USDC into HeronVault contract
3. Keeper runs 5-min cycles, reads vault state via multicall
4. On Net-Edge approval: vault calls Meridian lending pool
5. Yield accrues from borrower interest on Arc testnet

Vault Contract

The EVM vault (HeronVault.sol) provides the same security guarantees as the Solana program:

• Merkle mandate — only whitelisted venue+function selectors can execute
• Per-action cap, epoch cap, position limit — all enforced in contract
• Single executor key — revocable by owner
• Withdrawal never blocked — even when paused
• Emergency exit — owner sweeps all venues in one tx
• Sentinel role — can lower caps / veto queue, never raise

Factory Deployment

Arc uses a factory pattern — each user's vault is deployed on first deposit:

User connects wallet
  → Frontend calls factory.createVault(wallet)
    → New HeronVault deployed with user as owner
      → Keeper discovers vault via factory events

Environment

HERON_NETWORK=arc
HERON_ARC_RPC=https://arc-testnet-rpc.example.com