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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。 ; r3 ~3 m) `* N) ^3 O$ H! A+ x1 d
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。
$ ]1 Q6 [4 M5 A9 s8 x& W 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。 . M& N: c [. @$ n( v
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。 * d' N; O/ V) B* j. U4 I e- M3 p
而事实上这也再一次证明了为什么 DeFi 比 CeFi 更「好」。
2 ^' k& _+ z, ?8 u( G# M, E# o关于 stETH 事件的简单回顾
; w$ b$ b2 h6 [) T ~: g5 WLido 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。
# ^+ `3 f+ D5 ILido 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。 . t! z Y3 B& q, M7 }' J& G6 ?
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%。
2 K3 z; P, ~ Y2 B& c4 [: D( c * g0 y2 X3 W: C6 Q$ s! Z- {
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。
, z& [. e- c4 E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。
, y# _% t& S" @! A0 p3 m3 BstETH 所谓的「脱锚」问题
" @2 b& E G2 k/ x. C z: z# FstETH 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。 3 {' [, w$ n/ O, ]# w' _
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。 ; F7 T/ d6 @7 U0 U
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。 + O+ g' `3 X$ ~& q0 @, ~& o0 g/ }
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。 3 ?/ f* ~5 P+ Z% i" U8 O
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。 3 L0 ~. `3 W. h) Z$ y
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。 ' l4 R: |( h5 @4 Y2 u v$ M, A& L! P
DeFi 中 stETH 的风险敞口$ _: _- T0 p5 \& B9 G) Y+ i$ m
DeFi 中 stETH 作为抵押品的风险主要集中在两个协议之中:Aave 和 Maker。 6 y* ^+ A% B& y1 T# [" N4 V& O
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