前言
Foreword to
Unitimes AMA（Ask Me Anything）是 Unitimes 重点打造的微信群线上问答系列活动，每周举办一期。我们邀请发展较成熟的区块链项目的创始人、CEO、CTO或核心开发者等嘉宾做客社群，与群成员就该项目的突出技术亮点以及用例等进行高质量互动问答，旨在学习交流区块链最新技术和应用。
Unitimes AMA (Ask Me Anything) is a series of questions and answers on the micro-message line focused on Unitimes, which is held once a week. We invite guests such as founders, CEOs, CTOs or core developers of the mature block chain to serve as guest communities for high-quality interactive questions and answers with group members on the salient technical highlights of the project and the use of examples to share the latest technologies and applications of the block chain.
期数：第23期
term: No. 23
特邀项目：Liqudity.Network
Special invitees: Liquency.Network
特邀嘉宾：Guillaume Felley，运营总监
Special guest at
主题：Liquidity.Network ——代币交易和交换平台
Theme: Liquidity.Network - Monetic Exchange and Exchange Platform
AMA分为固定问答和自由问答两个环节。
AMA is divided into a permanent question-and-answer period and a free question-and-answer period.
固定问答
1
Unitimes：Guillaume，你好。欢迎参加 Unitimes AMA。请先介绍一下你自己以及Liquidity.Network吧！
Welcome to Unitimes AMA. Please introduce yourself and Liquidity.Network!
我叫 Guillaume，住在瑞士。大约一年前，我从苏黎世联邦理工学院大学计算机科学与技术专业毕业后就开始在 Liquidity 工作。Liquidity Network 正在构建区块链扩展解决方案，称为 Layer-2（L2）。 我们的一些主要贡献是 NOCUST 和 Revive 协议。 我们已经实施了 NOCUST，它现在正在主网上运行。在 Liquidity Network，我们想进一步推动区块链的研究 :)
My name is Guillaume, who lives in Switzerland. About a year ago, I started working in Liquidity after graduating from the University of Computer Science and Technology at the Federal Institute of Technology in Zurich. Liquidity Network is building a block extension solution called Layer-2 (L2). Our main contribution is the NOCUST and Revive Agreement. We have implemented NOCUST, which is now operating on the main web site. At Liquidity Network, we want to further research on the block chain:
2
Unitimes：Liquidity.Network 的 NOCUST 是什么？它和 Plasma 有什么不一样？
Unites: Liquidity. Network & nbsp; NOCUST? What's the difference between it and Plasma?
NOCUST 是 Layer-2 支付系统，允许创建一种集中处理但无需信任的支付枢纽。NOCUST 支付枢纽的用户的资金是非托管的，并由他们自己保留其私钥。
NOCUST is a Layer-2 payment system that allows for the creation of a centralized but untrusted payment hub. NOCUST pays users for the hub for money that is not hosted and they keep their private keys.
与 Plasma 的主要区别在于它的架构，Plasma 是基于 UTXO（比如比特币），而 NOCUST 是基于帐户的（比如以太坊）。
The main difference with Plasma is its structure, which is based on UTXO (e.g. Bitcoin), while NOCUST is based on accounts (e.g. Etheria).
基于账户提供了优于 UTXO 的几个优势：资产是完全可替代的。 Plasma针对不可替代资产（ERC721）进行了优化，而 NOCUST 则更多地用于支付。
The account provided several advantages in favour of UTXO: the assets were entirely irreplaceable; Plasma was optimized for non-renewable assets (ERC721), while NOCUST was paid more.
此外，我们已经完全指定并演示了 NOCSUT 的安全属性。 大家可以在这里查看我们发表的学术论文：
In addition, we have fully specified and demonstrated the security properties of NOCSUT, where you can look at our academic papers:
https://eprint.iacr.org/2018/642.pdf
3
Unitimes：现在有很多其他的支付通道网络的项目。请问 Liquidity.Network和这些项目相比有什么优势？
Unitimes: There are many other payment channel networks. What advantages do Liquidity.Network have in relation to these projects?
首先，我们在 Liquidity Network 建设的网络与支付通道网络（PCN）（如闪电网络或雷电网络）截然不同。支付通道仅支持单方付款通道来进行1对1的互动。我们正在建立的是可以被视为多方支付通道的支付枢纽（Hubs）。 底层技术非常不同。
First, the network we are building at Liquidity Network is very different from the PCN (e.g. lightning or thunder network). Payment corridors support only one-to-one interactions with one-on-one channels. We are building payment hubs that can be considered multiple payment channels (Hubs).
基于 Hubs 有以下几个优点：
Based on Hubs, there are several advantages:
支付通道枢纽的抵押品效率更高（需要的抵押品比 PCN 少）
More efficient collateral to pay for tunnel hubs (less collateral required than PCN)
UX（用户体验）更好。 例如，在接收付款时，收款方不需要在线（与闪电/雷电网络相反），或者在加入网络时不需要进行链上交易（无需在链上打开支付通道）等
UX (user experience) is better. For example, when receiving payments, the payee does not need to be online (as opposed to the lightning/ thunder network) or, when joining the network, a chain transaction (as opposed to opening payment channels on the chain) etc.
支付更加可靠，因为支付通道网络中的路由支付非常困难，因为支付必须找到正确的路线
Payment is more reliable because payment by route in the network of payment corridors is very difficult because payment has to find the right route
有了 NOCUST 这样的支付枢纽，路由选择是直接的，因此支付成功率很高。
With a payment hub such as NOCUST, route selection is direct and the rate of success of payment is high.
4
Unitimes：怎么运行一个NOCUST Hub（枢纽）？有没有什么操作指南？
目前有我们来为大家运行 NOCUST 支付枢纽。未来我们将开源服务器代码，允许任何人都能够运行 NOCUST 枢纽。但是，用户现在可以做的是使用我们的 JS 客户端库创建使用 NOCUST 枢纽的应用程序：
We are now running the NOCUST payment hub for everyone. In the future, we will open the server code to allow anyone to run the NOCUST hub. But what users can do now is to create applications using the NOCUST hub using our JS client library:
https://www.npmjs.com/package/nocust-client
大家可以在这里找到更多资源：
You can find more resources here:
https://liquidity-network.gitbook.io/project/
5
Unitimes：为什么两方支付通道枢纽存在区块链拥堵的问题？
Unitimes: Why are there block congestion at the two parties' payment corridor hubs?
如果你的交易对手行为不当，两方支付通道必须要实时监控区块链才能关闭交易通道。如果区块链变得拥堵，可能就无法提前关闭交易以确保资金安全。如果每个人都试图同时关闭各自的通道，那将会让区块链变得更加拥堵，为恶意交易方提供更多的可乘之机，问题就会变得更严重。
If your counterparty behaves inappropriately, the payment route will have to be monitored in real time in order to close the route. If the block chain becomes clogged, it may not be possible to close the transaction early to ensure financial security.
而使用 NOCUST 时，如果系统操作员试图进行欺骗，只需要通过一个链上交易，因此 NOCUST 更加抗拥堵。
When NOCUST is used, if the system operator tries to cheat, it only needs to be traded through a chain, so NOCUST is more resistant to congestion.
6
Unitimes：Liquidity.Network 现在有哪些核心产品？
What are the core products now?
当前的核心产品是我们提供给开发者的JS客户端库：
The current core product is our JS client library for developers:
https://liquidity-network.gitbook.io/project/
和支持 NOCUST hub 的移动钱包App。
Also supports NOCUST hub's mobile wallet App.
安卓版：
Andre:
https://play.google.com/store/apps/details?id=com.liquiditynetwork.wallet
安卓版安装包：
Andre's installation package:
https://liquidity.network/assets/media/files/mobile_wallet.0.1.3.apk
iOS版：
iOS version:
https://itunes.apple.com/ch/app/liquidity-network-wallet/id1395924630
很快我们就会发布我们的非托管交易所（Liquidity Dex）。
Soon we will publish our non-custody Dex.
7
Unitimes：基于 NOCUST 的支付枢纽允许用户在不接触区块链且没有任何可信第三方的情况下进行链下交易。 那么如何确保交易的实时性和安全性？
我们现在在做的就是确保交易的实时性和安全性。
What we are doing now is to ensure that transactions are real-time and secure.
简言之，我们将 NOCUST 交易批量处理为每隔36小时就在区块链上提交的单个哈希。通过 NOCUST 智能合约的链上挑战/响应机制，基于账户的安全性会阻止枢纽运营商更改账户余额欺骗他们用户。NOCUST 智能合约会保管资金，确保运营商不能作弊。
In short, we treat NOCUST transactions as a single Hashi that is submitted every 36 hours on the block chain. Through NOCUST smart contracts, the security-based challenge/response mechanism on the chain will prevent hub operators from changing account balances to deceive their users. NOCUST smart contracts will hold funds and ensure that operators do not cheat.
关于实时性，NOCUST 枢纽运营商提供一些抵押金，让交易可以快速被最终确定。如果运营商的承诺变卦，那么用户可以拿到这些抵押金以保证他们的交易顺利完成。
With regard to real time, NOCUST hub operators provide some collateral that allows the transaction to be finalized quickly. If the operator's promise is changed, the user can get the collateral to ensure that their deal is done smoothly.
8
Unitimes：开通和关闭支付通道的时候需要付费吗？交易需要付手续费吗？
大家可以使用 NOCUST 用枢纽在链下开通一个通道，所以连 gas 费用都不需要支付。开放通道只需要通过简单的链下签名，用户就可以准备接收资金了。
You can use NOCUST to open a channel under the chain with a hub, so you don't even have to pay for gas & nbsp. Open access only needs to be signed under a simple chain, so the user can be ready to receive the money.
然后，如果用户希望将部分以太币存入 NOCUST 枢纽，那么他就需要支付一定的 gas 费用。目前我们没有收取任何运行枢纽的费用。NOCUST 交易是免费的，不需要支付 gas 费用，而且交易是即时的。
Then, if the user wants to put part of it in the NOCUST hub, he'll have to pay some gas. We don't charge for running the hub at this point. NOCUST deals are free, they don't need to pay gas, and they're instantaneous.
9
Unitimes：你们把自己视为雷电网络的竞争者还是合作伙伴？
链下解决方案具有互操作性。将 NOCUST 枢纽链接到一个支付通道网络是可行的。目前我们的重点放在提供最好的用户和开发人员体验上。
The chain solution is interoperable. Linking the NOCUST hub to a payment channel network is feasible. Our focus is now on providing the best user and developer experience.
10
Unitimes：Liquidity.Network 什么时候会将你们的智能合约、客户端和服务器的代码开源？
Unitives:Liquidity.Network When will you open up your smart contracts, client and server codes?
我们计划很快就会开源智能合约。为了我们的社区和其他研究者，我们在做将这些合约做成文档的收尾工作。
We're planning to open smart contracts soon. For our communities and other researchers, we're working on the closing of these contracts into documents.
自由问答
Free Questions & Answers
固定问答环节结束后，参与此次AMA的成员可以自由提问。以下为 Unitimes 从群成员的提问中精选的几个问答：
At the end of the regular question-and-answer period, the AMA participants are free to ask questions.
1
谢谢你 Guillaume。请问类似雷电网络或者说链接支付的交易存在哪些问题？
Thank you, Guillaume. What's the problem with a transaction like a thunder network or a link payment?
路由很困难且不可靠
Routes are difficult and unreliable.
需要很多抵押金
It takes a lot of collateral.
用户体验不好，用户必须管理自己的支付通道，而且收款人需要在线接收付款
Users have bad experience, users have to manage their own payment channels, and recipients need to receive payments online
2
用户在 Liqudity DEX上抵押代币的时候，需要支付一定的 gas 费用吗？
Does the user of
需要，而且需要支付的 gas 费用稍微高一点，因为这是一个智能合约的功能，但费用是很合理的。
There is a need, and the cost of the gas is slightly higher, because it is a function of an intelligent contract, but the cost is reasonable.
3
你们准备什么时候上线 Liquidity DEX?在把代币发到 Liquidity DEX 上之前需要在先在链下兑换代币吗？具体怎么操作的?
When are you going to get on line Liquidity DEX? Do you need to exchange tokens under the chain before sending them to Liquidity DEX? How does it work?
我们已经宣布了4月份会更新Dex的测试网，5月份上主网。是的，用户的确要先把资产转换成链下的，然后才能开始交易。
We've announced that Dex's testing network will be updated in April and will be on the main network in May. Yes, users do have to convert assets into chains before they start trading.
4
交易真的是0手续费吗？那这样的话怎么激励矿工去处理交易？
Is it really a zero fee for the strong deal? How do you motivate the miners to handle the deal?
矿工不需要处理或者说根本不知道链下交易——这是扩容的意义所在。
Miners do not have to deal with, or are unaware of, the chain trade — that is the meaning of magnification.
5
你好，什么是 REVIVE？在什么场景下使用？
Hello, what's REVIVE? What's the scene?
Revive 是一个允许完全在链下重新平衡支付通道的协议。
Revive is an agreement that allows for a complete rebalancing of payment corridors under the chain.
6
用户转换的 ETH 数量是否会受限于 Hub 所抵押的 ETH 的数量，是不是只有具备足量的资金的人才可以运营一个 Hub？
Will the number of ETHs converted by the 1 ETH=1 NOCUST ETH 。系统保证每个NOCUST ETH 都有一个对应的锁定在智能合约中的链上ETH。每个人都可以运营 Hub。 1 ETH = 1 NOCUST ETH. The system ensures that every NOCUST ETH has a corresponding ETH locked in the chain of an intelligent contract. Everyone can run Hub. 7 在把代币转换为链下的之后，除了 Liquidity App，我的代币还可以存在哪里？ After converting the tokens into chains, where else can my tokens exist other than Liquidity App? 你有私钥，所以你的代币是安全的。你可以把你的私钥写在纸上或者使用硬件钱包。 You have a private key, so your token is safe. You can write your private key on paper or use your hardware wallet. 8 Liquidty Network 主要是为微支付服务的吗？ LiquidtyNetwork > mainly for micro-payments? Liquidity 非常适合用于小额支付，因为我们不收取交易费。 Liquidity is perfect for small payments because we don't charge transaction fees. 9 DEX 的通病就是没有足够的用户，还有流动性的问题…… 那大家为什么要用 Liquidity Dex？ There's not enough users and there's a problem with mobility... so why do you use Liquidity Dex? 我们的区别在于，Liquidity DEX 是一种链下（但非托管）的交易所。因此，它比当前的 DEX 扩展性更好，能够达到中心化交易所的可用性水平。 Our difference is that Liquidity DEX is a chain (but not a trustee) exchange. So it is much more extensive than the current DEX, and it can reach the level of availability of a central exchange. 10 你们计划将 LQD 挂牌到更大的交易所吗？ Are you planning on placing LQD on a bigger exchange? 我们正在准备挂牌的事情，但目前还不能透露具体信息。请关注我们哦~ We're getting ready for the sign-up, but we can't tell the details yet. Please pay attention to us. 11 关于 SLA 服务费用收取会根据币价进行不定期调整，还是固定的？ SLA 的价格是固定的，相关资产的价格或交易量的大小对其没有影响。 The price of SLA is fixed and the price of the asset or the volume of the transaction does not affect it. 以上是本次 AMA 的全部内容，非常感谢社群成员对 Unitimes 的大力支持，感谢 Guillaume~ This is all about AMA. Thank you very much to community members for your strong support for Unitimes. Thank you, Guillaume. 相关阅读： Relevant readings: 往期AMA精选： Previous AMA selection: 本文首发于微信公众号：Unitimes。文章内容属作者个人观点，不代表和讯网立场。投资者据此操作，风险请自担。 The article is based on the author’s personal opinion and does not represent the network’s position.
注册有任何问题请添加 微信：MVIP619 拉你进入群
打开微信扫一扫
添加客服
进入交流群
发表评论