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随着1500万美元的资金流向Liquid侧链,加密交易的隐私得到提振

2020-1-9 16:50

最大的stablecoin公司tether最近进行了一项价值1500万美元的区块链到区块链的令牌交换,加强了隐私保护。


1月7日上午11点27分,stablecoin的发行者Tether进行了一项跨链互换,将约1500万美元的USDT储备从以太坊(ethereum)转移到Blockstream的Liquid,这是一种与比特币区块链并行的联合边链。USDT首次推出液体燃料的技术可能性是在2019年7月宣布的。


乍一看,这一转移无伤大雅,但它对数字资产交易和更大的缆线市场都有影响。在2019年期间,基于比特币的协议Omni大规模迁移至以太坊,甚至是Tron。


但Liquid提供的是隐私。


通过保密资产——一种通过一种称为“保密交易”的协议来蒙蔽公众账簿上资产价值的隐私工具——这些束缚可能永远不会再出现在公众视线中。事实上,这可能是私人数字资产大规模交易的首例。


匿名的Blockstream社区经理Grubles通过Telegram告诉CoinDesk,通过隐藏流动性场外账户和交易所之间的转账,交易者可以“不用担心领跑者”就能转移资产。


例如,一名交易员可以将一些基于流动性的绳索转移到交易所,目的是购买比特币,而不会在购买之前向其他可能推高比特币价格的人伸手。


“一般情况下可以追踪系绳的运动,但也可以追踪到往来交易所的情况,这是很有价值的信息。”人们绝对是根据这些信息进行交易的。“在交易环境中,从交易透明的区块链账户转向流动性账户是一件无需动脑筋的事情。”


根据Messari的稳定资产指数,Tether相对于其他稳定资产保持着健康的竞争优势,其日交易量几乎是下一个领先的稳定资产——Paxos标准(PAX)的75倍。Grubles指出,如今交易人员普遍使用tether,与privacy tech合作只会增加tether的竞争优势。


此外,据Blockstream CSO Samson Mow称,缆绳上的液体可能是第一个半私人的马厩。


Mow告诉CoinDesk:“像Whale Alert这样的跟踪资产流动的服务,对流动的机密资产是无效的。”


然而,通过Blockstream block explorer发布在液体上的令牌的数量仍然是公开的,Grubles说,这可能会缓和一些令牌怀疑者的担忧。stablecoin的发行人及其姊妹公司Bitfinex目前正在接受纽约总检察长办公室的调查,原因是它们涉嫌将公司资金和客户资金混在一起。

 

隐藏Tether交易


Blocksteam的员工在2017年4月发表的一篇学术论文中首次正式提出了保密资产(CAs)的概念,该论文由比特币研究人员安德鲁•波尔斯特拉(Andrew Poelstra)、亚当•巴克(Adam Back)、马克•弗里登巴赫(Mark Friedenbach)、格雷戈里•马克斯韦尔(Gregory Maxwell)和皮特•维尔(Pieter Wuille)撰写。


正如论文中所描述的,研究人员使用Pedersen承诺(一种能够屏蔽输入信息同时证明其整体有效性的数学函数)来“屏蔽所有未使用的事务输出的数量(UTXOs,表示单个区块链值的术语)”。


通过核证机关,硬币既可以被藏起来不被人发现,也可以被证明仍然存在。CoinDesk的首席技术官保罗·阿尔多诺(Paolo Ardoino)表示,客户的需求促使公司决定将价值1500万美元的以太坊转换成Liquid版本。


Mow表示:“在保密交易中,你无法看到资金从一方流向另一方。”“这意味着在液体网络中发布的USDT比在其他链上发布的USDT提供了更好的隐私。”

 

Tether的迁移


作为一种用于加密交易和价格波动保护的工具,考虑到它的优势,更多的USDT将被铸造在流动性上。而且,这也不是说Tether以前没有玩过nomad。


“我们可能正在见证另一场从ERC20到液体的迁移的开始,”Crypt播客的主持人Marty Bent在周二的一篇博文中说。(ERC20是标准的Tether,用于在ethereum上创建标记。)


tether于2014年7月以RealCoin的身份推出,目前在多个区块链上发行,其中最大的区块链是ethereum、Omni和Tron。数据提供商CoinMetrics的数据显示,Tether在2019年4月将ethereum区块链的发行额提高到了峰值,在短短四周内从6000万美元增至4亿美元。


8个月后,随着以太坊的债券发行在今年冬天早些时候超过Omni,市场出现了某种程度的波动。截止发稿时,ethereum发行了价值23亿美元的tether, Omni发行了价值15亿美元的tether。


虽然1,500万美元可能与6,000万美元相距甚远,更不用说15亿或23亿美元了,但Tether去年推出的ethereum演示了潮流的变化有多快。

 

“从Omni到ERC20标准转变的动力,据我所知,是因为他们的钱包支持(低于标准)。到目前为止,Ethereum做得很好的一点是,它让服务可以很容易地启动钱包并接受随机的代币,”Bent写道。“对Tether用户来说,向ERC20标准的过渡还没有解决的一个问题是鲸鱼警报问题。”

 

Stronger privacy is coming to the largest stablecoin, tether, with a recent blockchain-to-blockchain swap of $15 million worth of tokens.

 

At 11:27 UTC on Jan. 7, stablecoin issuer Tether conducted a cross-chain swap of some 15 million USDT reserves from ethereum to Blockstream’s Liquid, a federated sidechain running parallel to the bitcoin blockchain. The technical possibility of USDT’s Liquid debut was first announced in July 2019.

 

Innocuous at first glance, the transfer has implications for both digital asset trading and the larger tether market, which saw a mass migration from Omni, a bitcoin-based protocol, to ethereum and even Tron over the course of 2019.

 

But what Liquid offers is privacy.

 

Through confidential assets – a privacy tool which blinds asset values on public ledgers via a protocol called “confidential transactions” – these tether may never see public light again. In fact, it may be the first instance of private digital asset trading at scale.

 

By hiding tether transfers between off-exchange accounts on Liquid and exchanges themselves, traders can move assets around “without worrying about frontrunning,” pseudonymous Blockstream community manager Grubles told CoinDesk via Telegram.

 

For example, a trader could move some Liquid-based tether to an exchange, with the intent of buying bitcoin without tipping her hand to others who might drive the price up before she can make the purchase.

 

“Movements of tether can be tracked in general but also particularly to and from exchanges, which is valuable information. People absolutely trade based on this information,” Grubles said. “Moving from a blockchain that has transparent transactions and onto Liquid is somewhat of a no-brainer in the context of trading.”

 

Tether maintains a healthy competitive advantage against other stablecoins with nearly 75 times the daily trading volume of the next leading stablecoin, the Paxos Standard (PAX), according to Messari’s Stablecoin Index. Noting its ubiquitous use today by traders, Grubles said a pairing with privacy tech only adds to tether’s competitive edge.

 

Moreover, tether on Liquid may be the first instance of a semi-private stablecoin, according to Blockstream CSO Samson Mow.

 

“Services like Whale Alert, that track movements of assets, would not work for confidential assets in Liquid,” Mow told CoinDesk.

 

However, the number of tether tokens issued on Liquid remains public via the Blockstream block explorer, said Grubles, potentially assuaging some of the concerns of Tether skeptics. The stablecoin issuer and its sister company, Bitfinex, are currently under investigation by the New York Attorney General’s Office for allegedly commingling corporate and customer funds.


Shielded tethers

 

Confidential assets (CAs) were first formally proposed by Blocksteam employees in an April 2017 academic paper penned by bitcoin researchers Andrew Poelstra, Adam Back, Mark Friedenbach, Gregory Maxwell and Pieter Wuille.

 

As described in the paper, the researchers used Pedersen commitments, a mathematical function capable of shielding input information while proving its overall validity, to “blind the amounts of all unspent transaction outputs (UTXOs, the term for individual blockchain values).”

 

Through CAs, coins can be both hidden from prying eyes and proven to still exist. Customer demand drove the decision to convert $15 million worth of tether from ethereum to the Liquid version, Tether CTO Paolo Ardoino told CoinDesk.

 

“With Confidential Transactions you can’t see the amounts being sent from one party to another,” said Mow. “That means that USDT issued in the Liquid Network provides better privacy than USDT on other chains.”


Tether’s blockchain hop

 

s a vehicle for crypto trading and price volatility protection, it’s likely more USDT will be minted on Liquid given the advantages. And, it's not like Tether hasn’t played nomad before.

 

“We may be witnessing the beginning of another Tether migration from ERC20 to Liquid,” said Tales from the Crypt podcast host Marty Bent in a blog post Tuesday. (ERC20 is the standard Tether has used to create tokens on top of ethereum.)

 

Launched as RealCoin in July 2014, tether is currently issued on multiple blockchains, the largest of which are ethereum, Omni and Tron. As data provider CoinMetrics shows, Tether kicked issuance onto the ethereum blockchain into high gear in April 2019, rising from $60 million to $400 million in a mere four weeks.

 

Eight months later and a flippening of sorts occured, with tether issuance on ethereum overtaking Omni earlier this winter. As of press time, some $2.3 billion tether is issued on ethereum compared to $1.5 billion on Omni.

 

While $15 million may be a far cry from $60 million, let alone $1.5 billion or $2.3 billion, Tether’s last year with ethereum demonstrates how fast the tide can shift.

 

“The impetus for the transition away from Omni to an ERC20 standard is, from what I understand, because their wallet support is [subpar]. What Ethereum has done really well to date is make it really easy for services to spin up a wallet and accept random tokens,” Bent wrote. “One thing the transition to an ERC20 standard hasn't solved for Tether users is the Whale Alert problem.”

原作者: William Foxley 来自: coindesk