Hubble is a fee-sharing decentralized finance (DeFi) protocol built on Solana. Hubble will offer multiple DeFi services as the protocol and DeFi continue to mature and expand.

Hubble begins its DeFi journey in Phase 1 with a focus on borrowing and minting USDH. Users can deposit multiple kinds of crypto assets like SOL, BTC, ETH, and others to borrow up to 90.9% LTV in USDH. While borrowing, users can earn yield on their deposits.

These borrows are guaranteed through a Stability Pool of USDH deposits made by Stability Pool providers who pay off bad loans and earn the ~10% difference in liquidated assets. In addition, users who deposit USDH in the Stability Pool earn HBB, Hubble's governance token.

HBB can be staked on Hubble to earn fees from the protocol. In the future, HBB will be used to vote on improvement proposals as Hubble DAO's governance token.

Staking HBB earns users 85% of the revenue Hubble Protocol generates from its services.

This revenue will originally come from the 0.5% fee for minting USDH and the 0.5% fee for redeeming USDH for collateral. As the protocol expands, HBB stakers will be exposed to additional streams of revenue.