> For the complete documentation index, see [llms.txt](https://allblue-docs.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://allblue-docs.gitbook.io/docs/en/allblue-stable/core-contracts/b-token.md).

# b-Token

b-Tokens are ERC-20 tokens issued through AllBlue Stable and represent supported stable token positions within the protocol.

Each supported underlying token has a corresponding b-Token.

### Supported b-Tokens

| Underlying Token | b-Token |
| ---------------- | ------- |
| USDt             | bUSDT   |
| USDC             | bUSDC   |
| AUSD             | bAUSD   |

### Role

* Represents a supported stable token position within AllBlue Stable
* Used in the minting and redemption flow of the Stable protocol
* Can be transferred as an ERC-20 token
* May be used in supported AllBlue V2 Pairs
* May be used in supported AllBlue V3 Pools

The availability of specific b-Token liquidity pools may change according to the supported AllBlue markets.