Wrapped Tokens and sTokens | Symbiosis
The Symbiosis protocol uses sTokens (a type of wrapped tokens) to do cross-chain operations. More information on sToken, sToken's liquidity pools, and the supported blockchains in this document.

Wrapped Tokens vs. sTokens

A wrapped token is a representation of one token through another: the original asset is locked in a special smart-contract on the blockchain where this asset exists, and
  1. 1.
    The wrapped version is issued (minted) on the same blockchain OR
  2. 2.
    The wrapped version is issued (mined) on another blockchain.
Wrapped tokens are widely used to:
  • Exchange one asset for another within one blockchain;
  • Bridge blockchains. When blockchains are bridged, cross-chain operations become possible.
The Symbiosis protocol uses both types of wrapped tokens:
  1. 1.
    A wrapped token minted on the same blockchain is used to handle operations with a native cryptocurrency. We do not use any special name for this type of wrapped tokens.
  2. 2.
    A wrapped token mined on another blockchain is used to handle cross-chain operations (cross-chain swaps, interchain communicating, cross-chain zapping, bridging). To distinguish this type of wrapped tokens, we call it sToken*: sUSDT, sUSDC, sBUSD etc.. *sToken stands for Synthetic Token.
By design, the Symbiosis protocol ensures that each wrapped token and sToken is backed 1:1 ratio by the original asset locked in a special smart-contract.
For example, each sUSDC is backed by the original USDC on Ethereum, and that USDC is locked in a special Symbiosis' smart contract (Scheme 1).
Scheme 1. sUSDC on Binance Smart Chain (the representation of USDC).
Any asset of one blockchain can have its representation on another blockchain. However, in fact:
  1. 1.
    We chose a stablecoin on each blockchain supported by the Symbiosis protocol,
  2. 2.
    For each blockchain' pair sTokens are processed on the blockchain with the minimal gas fee.
For example, in the case Ethereum - Binance Smart Chain:
  1. 1.
    We chose USDC on Ethereum and BUSD on Binance Smart Chain,
  2. 2.
    sUSDCs are minted on Binance Smart Chain,
  3. 3.
    There is no sBUSD on Ethereum.
For information on liquidity pools containing sTokens, please refer to Liquidity Pools | Symbiosis

Supported Blockchains

Schemes 2 shows a graph of the blockchains supported by the Symbiosis protocol:
  • A node on the graphs is a supported blockchain, and
  • A link between two nodes means that direct cross-chain swaps are supported for this pair.
Scheme 2. Blockchains supported by the Symbiosis protocol on Mainnet.
  1. 1.
    Ethereum,
  2. 2.
    Binance Smart Chain (BSC),
  3. 3.
    Polygon,
  4. 4.
    Avalanche,
  5. 5.
    Boba,
  6. 6.
    Telos,
  7. 7.
    Aurora

Wrapped Tokens and End Users

sTokens are used for technical purposes. The end users cannot trade sTokens, though they can:
  • Become liquidity providers and add sTokens to liquidity pools owned by Symbiosis. Please check out Sources of Rewarding | Symbiosis for more information and
  • Exchange sTokens for stablecoins on liquidity pools owned by Symbiosis.
There is a user guide for Symbiosis WebApp on sTokens: Dealing with sTokens

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Wrapped Tokens vs. sTokens
Supported Blockchains
Wrapped Tokens and End Users
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