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该文是恢复Waves协议完整生态和全部功能的总体计划。 7 ?. D2 X6 t: p/ \2 |; k- k
2022年 4月2日,Neutrino协议稳定币 — USDN与美元脱钩。这是由于在Curve Finance的USDN流动性池中出现大量代币出售。与美元脱钩本身就很不幸,但我们看到问题继续出现。后续,基于Waves的贷款协议 Vires Finance 陷入了流动性危机,即“银行挤兑”—提供流动性的用户出于担心急忙从协议中撤出了自己的头寸。 # T1 n0 F; P# V2 y0 d) h8 l
这两个问题今天仍然存在。就Neutrino而言,USDN几乎已经回铆—恢复了两次。由于 2022 年 5月10日左右的 LUNA/UST 危机,第二次大规模脱钩发生。在撰写本文时,USDN为0.97美元。在Vires的情况中,用户提款受到限制,因为大部分存入的资金都已被借出。几个非常大的借款人阻止了存款人提取资金,贷款方必须还款,存款人才能撤出流动性。 1 \9 ?# [( ?. }
本文将展示 Waves DeFi 协议已经采取的用来解决这种情况的措施,以及它们为何如此重要。不过,社区的大多数用户一直在等待一个完整的总体规划:即我们下一步将做什么以及我们如何看待解决问题的方法。
3 r( a. r" z8 y4 J. v: Z这就是计划。 " g& O3 }) X" O& d% M
恢复的步骤0 K J* B9 Z1 m" X- `% s; R
银行挤兑情况导致协议彻底崩溃,纠正它不是一件容易的事。然而,有两件事帮助我们度过了这场风暴。首先,Neutrino和 Vires Finance 团队立即采取行动寻找并提出解决方案。其次,Waves社区成员对这些提案的理解和快速投票。
3 H: {0 T) ]( u) k* y; C! z修正铆钉
" D, Y4 ]4 o+ z+ `& G首先要解决的问题是脱钩。如果没有价值1美元的稳定币,后续计划将无法实施。
6 g4 z: q+ k H4 K4 t: H6 b投票#7:定义最大兑换金额参数 ' `) J5 l- l$ Q, s7 R
· 这做了什么:更改了兑换参数,使USDN更容易通过套利恢复锚定。更改了之后,用户可以以更少的NSBT来将1美元的WAVES兑换成USDN。
g8 o! O9 k( k: y }$ B+ D1 C· 原因:以前,用户需要大量NSBT(Neutrino治理代币)才能直接与智能合约交互,并以硬编码的1美元汇率将USDN换成 WAVES。这限制了可以参与套利的用户数量(以脱钩价值在Curve池中购买USDN,然后以硬编码的1美元汇率将其卖给智能合约)。通过更改这些参数,需要的NSBT更少,因此,更多的用户可以参与到USDN回锚的过程中来。 ; A' T- a% a9 Z2 i
· 结果:这效果很好,大量用户从Curve池中购买了大量的金额,并且为用户提供了数百万美金的套利收入,使USDN在过去两个月中两次恢复锚定。
/ h& p, R0 O% x+ m; x5 h解决流动性危机 % |6 h+ l( o1 A& d
第二个问题是在社区信心受到严重影响的情况下,如何将足够的流动性带回Vires Finance。如何在避免同样情况发生的前提下做到这一点?当前,只要新的流动性存入,就会被瞬间提取出来,这意味着速度最快的用户—通常是机器人—可以收回自己的存款,但大部分用户仍然无法提取存款。
) S$ A2 J$ _+ l( S将 WAVES/USDN/EURN 清算阈值设置为 1,所有资产的 最大借款APR设置为400
+ _+ b4 O+ M% ~; J· 它意味着什么:所有借款人必须归还 99.98%的贷款以避免清算头寸。用户需要支付的贷款利率从原来的80%降低到40%
' Q4 S9 g3 Q/ U- ^, V· 原因:这是对社区愤怒以及发现存在价格操纵的证据的反映。几个大户口借了大部分存款。我们意识到,如果这些借款被清算,问题将被迅速解决,因为它们的抵押品可恢复存款人需要的流动性。
% m v4 ]6 ]0 n. a· 结果:该提案被社区拒绝,因为用户希望保留自由市场原则,且认为提案过于严苛。
. g1 U/ b6 s# R$ D) h* X为 USDT 和 USDC 设置每日提款限额
# C$ w% U! o, ~, |3 B& o; H3 Q· 内容: |
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