What is Hubble Protocol?

Hubble is an innovative decentralized finance (DeFi) protocol built on the Solana blockchain. In Phase 1 of development, Hubble enables you to borrow USDH against multiple assets. Borrowing USDH allows users to access the liquidity (cash on hand) in their long-term holding tokens through zero-interest borrowing.

What can I do on Hubble?

With Hubble’s borrowing platform, you can:
  • Borrow USDH interest-free for as long as you’d like
  • Deposit multiple cryptos to mint USDH: SOL, BTC, ETH, RAY, SRM, FTT, and more
  • Yield positive interest on collateral deposits (earn while you borrow)
  • Earn protocol rewards by staking HBB
  • Earn from liquidations by depositing USDH in the Stability Vault (formerly Stability Pool).

How do I use Hubble?

Hubble has its own decentralized application (dApp) where all our services are available in a single integrated platform. All you need to use Hubble is a Solana wallet, SOL to pay for gas, and any of the tokens accepted for borrowing on Hubble.

Why should I borrow through Hubble?

Hubble combines several features into one borrowing platform that increases capital efficiency in multiple ways.
If you want to go long on SOL, Hubble lets you hold onto your SOL as it appreciates in value and borrow USDH to do other things.
Hubble doesn’t charge interest and doesn’t require a payment due date, so you are free to repay the amount you borrowed at any time along with a 0.5% fee. Your debt does not increase unless you borrow more USDH.
Hubble also allows a 80% loan-to-value (LTV) for borrowing (133% collateral ratio). The liquidation penalty is set at only 10%, so you will be returned a portion of your collateral if you are liquidated.
Note: If your loan is grandfathered in at 90.9% LTV, then no collateral will be returned upon liquidation.

What is loan-to-value?

Loan-to-value, or LTV, is the total value of borrowed USDH compared to the total value of collateral deposited. LTV is expressed as a percentage.
LTV can be calculated as follows:
So, if a borrower deposits $200 SOL and borrows 120 USDH:
The borrower now has a 60% LTV with 15% borrowing power remaining. If the borrower's LTV rises above 80%, they will be liquidated.

What fees are involved in using Hubble?

Fees are charged once and at the time of borrowing. There is currently ZERO cumulative interest to be paid on Hubble.

Borrowing fees:

  • Each time you borrow, you pay a 0.5% fee of the total USDH you borrow. For example: Borrowing 100 USDH means you owe 100.5 USDH.
You can get a full breakdown of Hubble’s fee mechanics in our Fee Rate doc.

Where can I find Hubble’s market cap and current supply?

Our market cap and supply can be viewed live on Solscan.