> For the complete documentation index, see [llms.txt](https://docs.tangible.store/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tangible.store/ustb/ustb-token.md).

# USTB Token

USTB is a fully permissionless, cross-chain, rebasing dollar-pegged stablecoin. 

USTB is a wrapped version of [USDM](https://docs.mountainprotocol.com/reference/usdm-token), with USDM supplying 100% of the backing for USTB.

USDM is backed by Mountain Protocol's reserves of short-duration US Treasuries (T-Bills) having an average duration of less than 3 months or less. [Learn more about USDM.](/ustb/backing-asset-usdm.md)

**US Treasuries are considered one of the safest yield-producing, USD-denominated investment options. T-bills guarantee a risk-free yield, backed by the full faith and credit of the U.S. government.**

USTB is an ERC20 rebasing token, with a redemption value pegged at 1:1 to USDM, which in turn has a redemption value pegged at 1:1 for primary customers. Like other fiat-backed stablecoins, we expect USTB to trade \~$1 in the secondary market, a function of buy/sell volume, liquidity depth and arbitrage opportunities.

<table><thead><tr><th width="262">Indicator</th><th>Details</th></tr></thead><tbody><tr><td>Ticker</td><td><code>USTB</code></td></tr><tr><td>Token Type</td><td>ERC-20</td></tr><tr><td>Decimals</td><td>18</td></tr><tr><td>Contract Address</td><td><code>0x83feDBc0B85c6e29B589aA6BdefB1Cc581935ECD</code></td></tr><tr><td>Chains</td><td>re.al, OP, Base, Eth</td></tr></tbody></table>

## Getting USTB

#### Minting

USTB is minted on Ethereum in the Tangible app.

USDM, purchased on [Curve](https://curve.fi/#/ethereum/swap) (Eth) or minted directly from Mountain Protocol is wrapped into USTB. Minting can only be done on Ethereum.&#x20;

Once minting is complete, USTB can be bridged to any of the supported chains via LayerZero where it can be farmed or sold into liquidity pools.&#x20;

#### Buying

Liquidity will be available for USTB on the following chains and exchanges:

| Chain    | Exchange                                |
| -------- | --------------------------------------- |
| re.al    | [Pearl](https://www.pearl.exchange/)    |
| Optimism | [Velodrome](https://velodrome.finance/) |
| Base     | [Aerodrome](https://aerodrome.finance/) |


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.tangible.store/ustb/ustb-token.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.