为什么WETH不可能暴雷?WETH和WBTC有什么区别?

PanewsPublished on 2022-11-29Last updated on 2022-11-29

Abstract

WETH只是ETH的ERC-20版本,只需经过简单的Wrapped Ether合约即可完成互换,几乎不可能暴雷。

WETH只是ETH的ERC-20版本,只需经过简单的Wrapped Ether合约即可完成互换,几乎不可能暴雷。

随着Genesis暴雷、灰度GBTC大幅脱钩,WBTC/BTC兑换比例也小幅低于1。在各种不利的外部条件下,FUD进一步传播到WETH。在各路大V的玩笑之下,部分用户被误导以为WETH存在风险。

先说结论,WETH几乎不可能暴雷,网上传播的关于Uniswap中ETH和WETH兑换比例不为1的图片,可能来自于P图或者自己发行的假币。

为什么WETH不可能暴雷?

WETH全称Wrapped Ether,即为封装的ETH。将ETH封装为WETH的合约非常简单,几乎不可能出现错误。且该合约已经存在多年,保存着数十亿美元的ETH,用户随时可以1:1地将ETH兑换为WETH,或者将WETH兑换为ETH。常用的Uniswap等DEX也提供了兑换的入口。

从以太坊区块链浏览器Etherscan上也可以看到,截至11月28日下午,发行的WETH总量为3799267枚,而该地址中也持有完全相同数量的ETH。

为什么需要WETH?

既然ETH和WETH可以完全1:1地进行兑换,那为什么还需要WETH呢?

在以太坊的链上操作中,细心的朋友可能会发现,使用ERC-20代币和新的合约进行交互时需要先进行授权操作,而使用ETH并不需要,两者遵循不同的标准。ETH可以在以太坊上作为燃料费,但它却早于ERC-20格式诞生,并不是ERC-20标准的代币。对于一些只接受ERC-20代币的DeFi应用,就不能接受非该格式的ETH,因此就出现了ERC-20格式的WETH。

对于部分合约开发者而言,直接使用WETH,不用再额外开发支持ETH的合约,就可以节省开发时间。比如想要使用ETH提供流动性或者作为抵押品进行借贷,可能就需要先将ETH转变为ERC-20标准的WETH。

WETH和WBTC的区别

虽然WETH(Wrapped Ether)和WBTC(Wrapped Bitcoin)的名称看起来相似,但两者发行的原理却完全不同。PANews此前也撰文详细介绍了WBTC的相关机制。

因为原生BTC存在于比特币网络上,要在以太坊的智能合约中使用,只能将原生BTC跨链到以太坊网络上。

已经暴雷的Alameda Research曾是WBTC最大的商家,有人担心WBTC会暴雷,但这种担心是多余的。以太坊上WBTC的商家、托管人由一个多重签名合约控制,多签合约的密钥由加密领域的知名机构持有。Kyber的CEO Victor Tran 11月25日在GitHub提出,将WBTC Big DAO迁移到新的签名合约,投票人数由原来的11/18变更为8/13,FTX相关的Blockfolio(FTX)地址将被删除。新的成员包括B.Protocol、Badger、Balancer、BitGo、Chainlink、Compound、Gopax、Krystal、Kyber、Loopring、Multichain、Ren、Tom Bean。

所以WBTC本质上是跨链发行的BTC锚定币,受多签控制,相对比较安全。而WETH就是ETH的ERC-20版本,只需经过简单的Wrapped Ether合约即可完成互换,并不需要复杂的跨链过程,也没有人可以控制WETH中的资金,几乎不可能出现问题。

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