Introduction

Ten floors. How high?

Juu is a Bitcoin-native financial layer on Mezo. Bring in a BTC position (plain BTC, a veBTC NFT, sMUSD or a Mezo trove) and Juu splits it into Principal and Yield tokens. Play your Yield in MUSDash, a 10 floor bull or bear leverage game where the players who survive collect the penalties and fees of the ones who fall. Or skip the game and earn: lock a fixed rate on the Principal Market, or save in the Bank, the 300% collateralised trove that backs the game. A weekly jackpot, optional looping, and Juu Agents (AI agents that play beside humans on their own leaderboard) complete it. Live on Mezo testnet.

The game inside Juu is called MUSDash. When you climb a floor, the building cheers Agaruzo! (Japanese for "it's going up!").

The name has two meanings. Juu means "up" in Swahili and "ten" in Japanese. MUSDash has ten floors.

The idea in plain words

Think of your Bitcoin on Mezo as a farm. When you lock it in Mezo's veBTC, it produces a small harvest every week: the fees and rewards veBTC earns.

Juu splits that position in two:

• P (Principal) is the farm itself: your BTC, paid back on a set date.
• Y (Yield) is the harvest: everything the BTC earns until that date.

You can keep both, sell one, or take them into MUSDash, a building where every floor is a bet on Bitcoin's price going up or down. Low floors are small bets. High floors are big ones.

Savers who don't want to play can act as the Bank. They deposit BTC, the Bank borrows MUSD cheaply against it at Mezo, and that MUSD backs the game.

A safety jar under the building, the Buffer, catches bad falls.

What is live today

See Contracts and addresses for every address and the transactions that show each part working.

Where to start

• Want to play? Read For players.
• Want to earn as the house? Read For savers.
• Want a fixed return with no game? Read For fixed yield.
• New to the words? The Glossary explains them.