# 比特币质押的挑战

BTC的市值约为 1.48 万亿美元 (2024/11/06)，通常被认为是加密数字资产的支柱。然而，尽管BTC占据主导地位，但只有一小部分BTC被质押。相比之下，ETH近 28% 的供应量被抵押，释放了数十亿美元的经济价值。如果BTC持有者以类似的水平质押其所持BTC的一小部分，就可以额外释放 3300 亿美元的价值。那么为什么会出现这种差异呢？

**答案在于比特币质押面临独特的挑战：**

* 跨链复杂性：质押BTC通常需要繁琐的跨链交易，这使得用户很难参与质押活动。
* 有限的可编程性：与以太坊不同，比特币网络缺乏原生智能合约功能，限制了部署复杂的质押协议的能力。
* 流动性问题：BTC持有者经常发现其质押的BTC在保持流动性方面具有挑战性，从而阻碍了更广泛的参与。

这些问题使得BTC持有者很难在保持BTC流动性的同时获得质押奖励。这就是质押抽象层 (SAL) 发挥作用的地方。


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