# 什么是 SAL?

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**质押抽象层 (SAL)** 是Solv协议的核心基础设施。它抽象化了跨多个生态系统质押BTC的复杂性，并为BTC持有者提供了统一的前端界面。借助 SAL，用户可以在不同的区块链上访问一系列收益策略，同时获得具有流动性的BTC资产凭证代币——SolvBTC。

通过与各种DeFi平台和生态系统集成，SAL简化了BTC持有者的参与流程，使其收益策略多样化，同时保持对BTC资产的持有。


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