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[虚拟币资讯]
Celsius 危机启示:为什么说 DeFi 大于 CeFi?
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在牛市中,像黑客攻击、rug pull 以及脱锚之类的事情从来不会被重视,大家一般都只是把这些事情当做茶余饭后的谈资,毕竟「印钱」才是牛市的绝对主题。 2 |6 x# [2 G+ k2 ]9 }- c" N, S& |
但在熊市中,任何一丁点「不体面」的行为都会被赋予更多世界末日的色彩。各种各样的恐慌言论通过 Twitter 等渠道快速扩散,并会在对本就岌岌可危的币价造成进一步的冲击。 9 b4 ^) ]! u* E9 I( l9 Q
不过市场糟糕的阶段也并非一无是处,这种阶段实际上为行业提供了宝贵的经验,能够把麦子从谷壳中分离出来。熊市对于真正的建设者来说非常珍贵,因为只有在这种阶段市场整体的节奏才会放缓。 ! T4 @7 F' Y: x
不久前 Terra 的崩盘让我们认识到了设计机制时可持续性的重要性。而本周伴随市场大跌而快速发酵的 Celsius 和 stETH 的案例让我们认识到了设计机制时透明度的重要性。 3 | s0 [& d5 t9 C1 Y4 B' V
而事实上这也再一次证明了为什么 DeFi 比 CeFi 更「好」。
/ f9 T! v& k! L6 @" `关于 stETH 事件的简单回顾
; U) `* _0 A2 N) A, xLido 是一个流动性质押协议,用户在此基础上向以太坊 2.0 质押存入 ETH,并收到 stETH 作为回报。stETH 是流动性质押衍生品(LSD),通过 rebases 累积质押奖励,并代表对协议所持有的基础 ETH 的兑换权,这些 ETH 被路由到各种验证器,在 Beacon 链上进行质押。 " w! {. a8 d F3 |+ m7 S& \) v
Lido 提供了一项有价值的服务,它消除了押注的机会成本,使 ETH 持有者能够累积质押奖励,同时保留资产本身的流动性,让其可以在 DeFi 内继续利用这部分资产来生息。 + D/ A3 C {" z! r K
该协议已经积累了超过 412 万枚 ETH,占信标链上 ETH 质押总量的 31.9%。 9 V/ g5 F' n' @8 B' C% T0 y

) I: l$ Q! y, }; F+ i3 |Beacon Chain 的提现功能将在合并后才会启用,届时每枚 stETH 将可以按比例兑换已存入 Lido 的 ETH 总量。在此之前,stETH 持有者可以退出他们的头寸的唯一方法是通过 DEX 的二级市场卖出。 . E" I, T$ n" G' t- j
目前 stETH 缺乏赎回机制或流动性,不过这对相信合并会成功的持有者来说没有什么问题。但这显然给那些希望提前大规模退出头寸的实体带来了很大的困扰。 % a' e- l U. R' C) y
stETH 所谓的「脱锚」问题
2 U$ H6 z) V0 DstETH 最大的流动性来源是 Curve 上的 stETH-ETH 池。这个池子的既定目标是两种资产之间保持 50/50 的平衡。不过截止发文时它的比例是 21.7% 的 ETH 对 78.2% 的 stETH。
. ?1 T: l6 T' S! G6 q, S- v4 T0 D在目前的规模下,该资金池仅持有 127,155 个 ETH 和 510,388 个 stETH。这意味着,不是每个 stETH 持有者都能「完整」退出他们的头寸。
- m, W6 v6 ~* Z" u4 b 这种不平衡是像 Alameda Research 这种「大户」退出头寸导致的。这导致 stETH/ETH 的价格在过去五周内从 1 跌至约 0.935。 ; \8 X$ L, Q: T6 f* E4 h' s. L& u
在这个市场充满不确定的阶段,某些市场参与者正在优先考虑保证自身持有资产的流动性。
9 Z% C; {6 }, p/ [5 v值得注意的是,stETH 不一定要与 ETH 平价交易。LSD 的价格对 Lido 的运作和 Ethereum 2.0 的合并都没有影响。事实上,这种折扣在熊市期间是可以预期的,因为在熊市中,流动性是溢价的。
% W& C% I I& ]" `7 p但是,这种下降确实给使用 stETH 作为抵押品的协议以及持有人带来了巨大的风险。
5 s0 g3 z/ M. Z$ F% E' e7 jDeFi 中 stETH 的风险敞口
6 K H0 B& w2 j' K9 dDeFi 中 stETH 作为抵押品的风险主要集中在两个协议之中:Aave 和 Maker。
: p; R3 P; K+ G' g S' ~相比只有 |
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