Gro Protocol

Gro Protocol is a stablecoin yield aggregator that tranches risk and yield into two sister products: PWRD — a stablecoin with built-in deposit protection and passive yield via a rebasing mechanism — and Vault (GVT) — a leveraged stablecoin yield optimizer that earns higher yields by absorbing losses first through the protocol's Risk Balancer. It serves both risk-off users seeking protected savings yields and risk-on users looking for leveraged DeFi exposure, all via deposits of DAI, USDC, or USDT.

Gro earns yield from three places in DeFi: lending interest (from platforms like Compound, Aave, and CREAM), trading fees from automated market makers (such as Curve and Uniswap), and protocol reward tokens (like COMP and IDLE) that get farmed and sold for more yield.

The system runs on a modified version of Yearn's vault design, using 4 vaults (one each for DAI, USDC, USDT, and one for the Curve 3pool's 3CRV token) and 7 different strategies to put deposited stablecoins to work. These strategies include lending stablecoins on platforms like CREAM; farming COMP and IDLE tokens and compounding the rewards; and providing liquidity into Curve's highest-yield pool, then depositing those LP tokens into the corresponding Yearn vault.

Once yield comes in, the Risk Balancer splits it between Gro's two products:

• PWRD holders get a protected (safer but lower) portion of the yield, delivered as automatic rebasing inflows to their token balance.
• Vault (GVT) holders get leveraged yield — effectively, PWRD's capital acts like borrowed money to boost Vault's returns.

If something goes wrong — like a stablecoin losing its peg or a strategy failing — Vault absorbs the losses first, shielding PWRD from harm.

A few extra mechanics round out the system:

• A HODL fee of 0.5% on withdrawals (adjustable by governance) rewards long-term holders.
• The performance fee is currently 0% (also changeable by governance).
• To keep gas costs low, deposits are sized into tiers: small "sardine" transactions skip swaps; medium "tuna" ones may swap into whichever stablecoin is most under- or over-exposed; large "whale" ones trigger a full rebalance.
• A small portion of total value is kept uninvested so users can withdraw cheaply without needing to pull funds out of active strategies.