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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。 - R+ t9 t ~% a- H" V+ a% G7 b
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。
: q% o- w& ?' ?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。 9 I! x0 e* U) i4 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。 2 ?) h I$ y ]" P+ q8 p
而事实上这也再一次证明了为什么 DeFi 比 CeFi 更「好」。
; J K9 R8 L8 p& E0 x关于 stETH 事件的简单回顾
% S8 ^7 c' R/ n2 Y7 [Lido 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。 9 g4 @' l, X6 |0 f* X, B
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' n( d1 b. B8 i# O
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%。 7 Q$ N5 \4 f! a# h" M

7 g+ d# q1 @' HBeacon 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。 7 }" m: q0 D- G% D% t4 W
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。 ( o, ?& @1 L/ [6 F
stETH 所谓的「脱锚」问题6 |; m _0 k2 q4 z$ T, k# t5 {
stETH 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。
+ \6 l/ J; q9 \8 t* M- j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。
t9 w- G% ^# l* Y0 L 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。
. U1 T5 z" ]' 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。 6 I. i* o# ~" z* q
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。 $ ^4 f( v3 j; i3 i7 R* J
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。 9 H1 d+ H) P/ W; o M
DeFi 中 stETH 的风险敞口/ i5 _3 g& D+ P; e1 u4 u! P
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。
$ d2 I4 y/ t2 C* X3 l3 w3 j3 v相比只有 |
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