> For the complete documentation index, see [llms.txt](https://docs.wandfi.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wandfi.io/products/collateral-vault/core-concept/usb-stablecoin.md).

# USB-Stablecoin

## What is USB?

Like the DAI in the MakerDAO protocol, USB(Universal Stable Basis) is a decentralized, asset-backed circulating token designed with a price using Oracle feeds, serving as a soft peg to the US dollar.

## How to Obtain USB?

USB is minted through the process of depositing collateral into the Vault. The protocol supports a variety of assets for minting USB. Conversely, holding USB grants users the ability to redeem their collateral from the Vault, with each USB token representing $1 worth of collateral. This design effectively ties the value of USB to the US dollar, ensuring its stability and reliability as a medium of exchange.

## Where do the earnings come from?

USB is a rebasable, interest-bearing stablecoin, generating earnings through:

* **Blast Native Yield:** A feature exclusive to the Blast network.
* **Financing Interest:** Paid by holders of margin tokens.

To receive the aforementioned earnings, users simply need to hold USB. Furthermore, USB can be utilized to engage in  [PTY--Price Trigger Yield](/products/collateral-vault/earn/pty-price-trigger-yield.md) for farming, as well as earn arbitrage profits from the [Discount Offer](/products/collateral-vault/discount-offer.md).

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