在Pi网络中建立节点不是人人都能被选上但人人都有机会

原文：

Pi Phase 2 - Pi NodesAt Pi Network, we believe that everyday people should have a greater voice and capture a greater share of the value that they create in society. We believe that the best way to achieve this goal is by building a decentralized currency and economy.

Pi’s decentralized currency will eventually be secured by a distributed global network of Pioneers, rather than being controlled by one single centralized entity. Pi’s global network will be ultimately self-governed, meaning that the community can shape how Pi evolves over time.

When Pi is fully decentralized, Pioneers will also have full sovereignty and control over their own cryptocurrency holdings. Progress in decentralization brings Pi closer to the phase where Pioneers will be able to sell or exchange Pi, without centralized interference, just like bitcoin and ethereum. In other words, moving into the Phase 2, the testnet phase, takes us one step closer to Mainnet, when Pi can be traded freely with other currencies, in addition to trading for goods and services.

Pioneers who want to help secure Pi’s currency can choose to become a Node.

Nodes are the forth role in the Pi ecosystem, and run on laptops and desktops instead of mobile phones. Similar to other blockchains, Pi Nodes will be responsible for validating transactions on a distributed ledger, and resolve the challenges in maintaining a distributed currency by having all nodes come to a “consensus” on the order of new transactions getting recorded.

Unlike nodes that use proof of work such as Bitcoin or Ethereum, Pi Node uses a different consensus algorithm based on the Stellar Consensus Protocol, in which nodes form trusted groups (quorum slicess) and only agree to transactions that those trusted nodes agree to. The security circles from Pi mobile miners aggregate into a global trust graph that enables Pi nodes to form quorum slices to determine who can and cannot validate transactions on the shared ledger.

Also unlike other crypto projects, the Pi Node will continue to uphold the philosophy of user centric design. Instead of requiring much technical knowledge to set up a node, everyday people will be able to do that by installing a desktop application on their computers, just like installing any other computer app. Through this desktop application, Pioneers can switch on/off to make their devices available/unavailable for serving as a node.

By March 31, 2020, we’ll make the initial version of the Pi Node application available to download and install. This initial version of the Node will include two interfaces: the node interface and the desktop Pi interface. The desktop Pi interface will be similar to the interface of the mobile app and will allow people to check their Pi balance and use the Pi chats on their personal computer. However, only members, who apply and get selected by the core team to serve as a testnet node, will have the node interface fully activated. The detailed requirements and selection process will be announced along with the software launch.

This version of the node is the first step towards building the Pi Testnet, which will enable the core team to test the consensus algorithm and its scalability, calibrate configurations, and adapt and improve the consensus algorithm. Pioneers who run this version of the node will not need to be concerned with such processes. All they need to do is to decide if and when their devices are available/unavailable serving as a node in the Pi testnet, if they’re selected as a node.

The Nodes for Pi’s Testnet will be launched and open for application by 3/31/2020. In order to be selected to run certain versions of the node on Pi’s Testnet, Pioneers will have to undergo KYC. More KYC slots will be opened up to support node enrollment and the advancement of Testnet. More detailed selection criteria for Pi Node will be released along with the software launch. But overall, the principles of node selection will be the trustworthiness in the network, and the availability and reliability of the device.

原文翻译：

Pi阶段2 - Pi节点

在Pi网络，我们相信每一个人都应该有更大的发言权，并在他们创造的社会价值中获得更大的份额。我们认为，实现这一目标的最佳途径是建立一种去中心化的货币和经济。

圆周率去中心化的货币最终将由一个分散的全球先锋网络来保护，而不是由一个单一的中心化实体来控制。Pi的全球网络最终将是自治的，这意味着社区可以决定Pi如何随时间演变。

当圆周率完全去中心化时，先驱者也将对他们自己的加密货币持有拥有完全的主权和控制权。分散化的进展使圆周率更接近于这样一个阶段，即先驱者可以在没有集中干预的情况下销售或交换圆周率，就像比特币和以太坊(ethereum)一样。换句话说，进入第二阶段，也就是testnet阶段，我们离Mainnet又近了一步，Pi可以与其他货币自由交易，除了商品和服务的交易。

想要保护圆周率货币的先驱者可以选择成为一个节点。

节点是Pi生态系统中的第四种角色，它们运行在笔记本电脑和台式机上，而不是移动电话上。与其他区块链类似，Pi节点将负责验证分布式账本上的交易，并通过让所有节点就记录新交易的顺序达成“共识”，解决维护分布式货币的挑战。与使用比特币或Ethereum等工作证明的节点不同，Pi节点使用基于恒星一致协议的不同一致算法，其中节点形成可信组(quorum slicess)，只同意那些可信节点同意的交易。来自Pi mobile miners的安全圈聚合成一个全局信任图，该图使Pi节点能够形成quorum片，以确定谁能够和谁不能验证共享分类帐上的交易。

与其他加密项目不同的是，Pi节点将继续坚持以用户为中心的设计理念。而不需要太多技术知识建立一个节点,日常人们能够做在电脑上安装一个桌面应用程序,就像安装任何其他计算机应用。通过这个桌面应用程序,开拓者可以切换开关,让他们作为节点的设备可用/不可用。到2020年3月31日，我们将提供Pi节点应用程序的初始版本，以供下载和安装。该节点的初始版本将包括两个接口:节点接口和桌面Pi接口。桌面Pi界面将类似于移动应用程序的界面，允许人们检查他们的Pi平衡，并在他们的个人电脑上使用Pi聊天。但是，只有申请并被核心团队选择作为testnet节点的成员，才会完全激活节点接口。详细的要求和选择过程将随着软件的发布而公布。

这个版本的节点是构建Pi Testnet的第一步，它将使核心团队能够测试consensus算法及其可伸缩性、校准配置、调整和改进consensus算法。运行这个版本的节点的先驱者将不需要关心这样的过程。他们所需要做的就是决定他们的设备是否以及何时可用/不可用，作为Pi testnet中的一个节点，如果它们被选择为一个节点的话。

Pi的Testnet节点将于2020年3月31日发布并开放申请。为了被选中在Pi的Testnet上运行特定版本的节点，拓荒者必须经历KYC。更多的KYC插槽将被打开，以支持节点注册和Testnet的改进。更详细的Pi节点选择标准将随着软件的发布而发布。但是总的来说，节点选择的原则是网络的可靠性，设备的可用性和可靠性。

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编译者/作者：pi币蚂蚁社区

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