> For the complete documentation index, see [llms.txt](https://docs.aspidanet.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aspidanet.com/aspida/how-it-works/duo-token-model.md).

# Duo Token Model

Aspida's LSD operates on a dual-token model consisting of the wrapped token, aETH (a deposit certificate of native ETH tokens wrapped 1:1 with ETH), and saETH (ERC4626), the staking token representation minted upon aETH staking. 

Primarily, aETH serves as a means for protocol-controlled liquidity provision, significantly enhancing liquidity efficiency. The amount of saETH staking yield increases as users hold more aETH (with no yield). This dual-token model allows users the freedom to choose the yields they wish to capture, whether from liquidity provision or staking.