# Bridge

### BABELFISH CROSS-CHAIN STABLECOIN AGGREGATOR BRIDGE <a href="#using-the-sovryn-cross-chain-bridge" id="using-the-sovryn-cross-chain-bridge"></a>

The BabelFish Cross-Chain Stablecoin Bridge allows easy and permissionless transfers of your stablecoins from one chain/sidechain to another.

The way that BabelFish Bridge works is aggregating deposits of certain stablecoins and issuing XUSD - a meta-stablecoin in 1 to 1 ratio. XUSD is the main USD-pegged stablecoin which is commonly used in the Sovryn and Rootstock ecosystems. If a user decides to swap his XUSD to other stablecoins, he has the ability to choose from currently available aggregated stablecoins. At present time there are 3 main chains/sidechains included in the Cross-Chain Bridge: **Rootstock** (RSK) , **Ethereum** (ETH), and **Binance Smart Chain** (BSC).

**XUSD** contract: [**0xb5999795BE0EbB5bAb23144AA5FD6A02D080299F**](https://blockscout.com/rsk/mainnet/address/0xb5999795BE0eBb5BAb23144Aa5fD6a02d080299f)

**BabelFish Aggregator** contract: [**0x1440d19436bEEaf8517896bffB957A88ec95a00F**](https://blockscout.com/rsk/mainnet/address/0x1440d19436bEEaf8517896bffB957A88ec95a00F/tokens#address-tabs)

The BabelFish Cross-Chain Aggregator Bridge (Web App) can be accessed [**here**](https://app.babelfish.money).

### Ethereum <a href="#ethereum" id="ethereum"></a>

Currently, bridging between **Ethereum** and **Rootstock** ecosystems facilitates the transfer of 3 stablecoins (**USDT**, **USDC** and **DAI**) from ETH-mainnet to the RSK-mainnet:

* **USDT:** [**0xdac17f958d2ee523a2206206994597c13d831ec7**](https://etherscan.io/address/0xdac17f958d2ee523a2206206994597c13d831ec7)
* **USDC:** [**0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48**](https://etherscan.io/address/0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48)
* **DAI:** [**0x6b175474e89094c44da98b954eedeac495271d0f**](https://etherscan.io/address/0x6b175474e89094c44da98b954eedeac495271d0f)

### Binance Smart Chain (BSC) <a href="#binance-smart-chain-bsc" id="binance-smart-chain-bsc"></a>

Bridging between **Binance Smart Chain** and **Rootstock** ecosystems facilitates the transfer of 4 stablecoins (**BUSD**, **BUSDT**, **USDC** and **DAI**) from ETH-mainnet to the RSK-mainnet:

* **BUSD:** [**0xe9e7cea3dedca5984780bafc599bd69add087d56**](https://bscscan.com/address/0xe9e7cea3dedca5984780bafc599bd69add087d56)
* **BUSDT:** [**0x55d398326f99059ff775485246999027b3197955**](https://bscscan.com/address/0x55d398326f99059ff775485246999027b3197955)
* **USDC:** [**0x8ac76a51cc950d9822d68b83fe1ad97b32cd580d**](https://bscscan.com/address/0x8ac76a51cc950d9822d68b83fe1ad97b32cd580d)
* **DAI:** [**0x1af3f329e8be154074d8769d1ffa4ee058b1dbc3**](https://bscscan.com/address/0x1af3f329e8be154074d8769d1ffa4ee058b1dbc3)

### Rootstock (RSK) <a href="#binance-smart-chain-bsc" id="binance-smart-chain-bsc"></a>

BabelFish enables also swaps of stablecoins within Rootstock ecosystem. Currently 4 stablecoins are supported:

* **DLLR:** [0xc1411567D2670E24D9c4Daaa7CdA95686E1250Aa](https://rootstock.blockscout.com/token/0xc1411567D2670E24D9c4Daaa7CdA95686E1250Aa)&#x20;
* **DOC:** [**0xE700691Da7B9851F2F35f8b8182C69C53ccad9DB**](https://blockscout.com/rsk/mainnet/address/0xE700691Da7B9851F2F35f8b8182C69C53ccad9DB)
* **rUSDT:** [**0xEf213441a85DF4d7acBdAe0Cf78004E1e486BB96**](https://blockscout.com/rsk/mainnet/address/0xEf213441a85DF4d7acBdAe0Cf78004E1e486BB96)
* **rDOC:** [**0x2d919f19D4892381d58EdEbEcA66D5642ceF1A1F**](https://blockscout.com/rsk/mainnet/address/0x2d919f19D4892381d58EdEbEcA66D5642ceF1A1F)\
  (deposits temporarily paused, withdrawals are enabled)