公告和信息

请注意更新! PAI节点版本 2.3.1 已经上线!

这是所有PAI完整节点的必需更新。

此更新改进了选票的传播，以减少链停顿的可能性。完整详细信息在这里：

https://github.com/projectpai/paicoin/releases/tag/2.3.1

在Linux上，可以通过在paicoin目录中运行以下命令来下载和编译此更新：

git pull

git fetch –tags

git checkout 2.3.1

make clean

make

sudo make install

paicoin-cli stop # if your paicoind is still running

paicoind # to restart paicoind

注意，独立质押者们

如果你们在向以下地址挖矿请联系我们

Pv4pdcHeaCG9T3AexmST7B7ER1eUeCQ1Uj

PuE74wwEsx674GiUo6BFURh6K7P4Zi7K8Y

PcnehRyFxyh1fV4aooKhLiHrepNdJu2C2x

PddKy88kfVSSBSjd2en3BQQkA2rqtJMRVx

请您发邮件给 contact@projectpai.com，或联系Project PAI的社区负责人

●在此链接参考DCR和PAI之间的比较: Project PAI 混合共识与Decred共识机制比较（DCR）

○在PAI论坛上查看

https://paiforum.com/t/project-pai-decred-dcr/2428

○您也可以下载PDF文档并查看:

https://paiforum.com/uploads/short-url/eayLyKcSpzc57AmGq2yGnTyu9f9.pdf

●PAI UP iOS v1.4.8版本下载，现已更新到App Store美国区：

○PAI UP iOS v1.4.8下载链接 :

https://apps.apple.com/us/app/pai-up/id1533457193

● Google Play商店现已提供PAI Up Android：

○ 在此处下载PAI Up Android：

https://play.google.com/store/apps/details?id=ai.lanier.paiup

● 移动钱包链接 paiup.com

● 演示版本所述的PAI数据协议现在可用于测试，使用户能够尝试使用加密和存储数据的 PDP2协议规范。它目前用于PAI Pass等服务。

○ 请在这里测试PAI数据协议：

https://paiforum.com/t/pai-data-storage-demo/2339

PAI COIN 池质押奖励摘要

目前未到期的质押：

●总额：8060 万PAI

●迄今为止，待发放的奖励总额：480万PAI

●平均质押持续时间：50.6周

目前已到期的质押

●总质押金额：6090万PAI

●总奖励: 1490万 PAI

●平均质押持续时间: 18.5周

搭建PAI节点激励计划

设置一个完整的节点并获得666 PAI的PAI Coin Pool 奖金！请根据此教程搭建完整节点，然后请您用与您的PCP帐户相关联的电子邮件地址发送电子邮件至：

promotions@projectpai.com

在电子邮件中，填写完整节点的IP地址或URL。我们将回复有关如何领取奖励的更多说明。

搭建PAI Coin应用程序

● 创建paicoind的预编译二进制版本供他人使用，来获得10,000 PAI币奖励！我们希望使社区成员更轻松地运行完整节点，以及独立挖矿&独立质押。我们执行此操作的方法之一是通过提供PAI Coin Core软件（包括paicoind和paicoin-cli）的预编译二进制文件，从而使用户不必从源代码进行编译。

● 如果您想参与，请通过电子邮件发送链接，以将您预编译的二进制文件（适用于Linux，macOS或Windows）发送到promotions@projectpai.com。每个平台收到的前三个有效方案将有资格获得奖励。

Project PAI 去中心化经济的演变

任何新产品的成功都取决于许多因素和各个方面。成功是分阶段进行的，并且有重叠的阶段，这需要并且取决于利益相关者在每个阶段进行协作。根据协作的结构，其价值主张和法规要求，遇到和预测到的挑战可能都会有所不同。

当应用于PAI区块链时，最初的核心开发人员开始着手在具有比特币协议线路上为网络协议的开源代码贡献代码，并具有一些与众不同的功能，例如分布式存储。该代码是完全开源的，任何开发人员都可以快速使用它，也可以为开源做出贡献。网络本身也完全是去中心化的，这样任何人都可以贡献计算资源来支持网络。开源的挖矿共识也完成了设计和部署，这可以避免对网络的恶意攻击。作为开放源代码协议的一部分，Project PAI提供的API允许任何开发人员从任何应用程序进行接口。开发人员维护开源代码，并为新开发人员提供支持。

完全去中心化带来了诸如缺乏任何中央管理机构或领导层的挑战。因此，用户、开发人员和支持者的社区都有责任将其认为适合改进协议的事情向前推进。社区是网络协议成功的关键。实际上，有人可能会从”梅特卡夫定律”中发现，开源、去中心化网络的价值取决于其背后的社区的作用。

开源协议类似于操作系统（OS）。它的采用将取决于用户如何与之交互。通常使用应用程序层（通常称为应用程序，可以转换为Web和本地移动应用程序）来完成此操作。优秀的开发人员不仅应考虑网络协议的价值主张，还应考虑其背后的支持社区，其KPI，并提出不仅具有实际意义而且还具有可持续业务和收益模式的可持续发展的应用程序。

作为应用程序的一部分，作为操作系统的区块链仍处于市场采用的早期阶段。它带来了一些挑战，例如高昂的交易费用，缺乏易于使用的用户界面，数字资产的安全性以及使用与底层区块链相关的数字代币的原因。但是，每一项挑战也带来了早期采用者的机会。

开发人员应考虑使用PAI协议的一些原因包括但不限于：

●PAI协议已完全去中心化

●所有代码以及与网络协议交互的API均在GitHub上可用且开源

●有一个由不同国家/地区的用户组成的社区，它们充当适当应用程序的早期采用者并提供营销支持，从而降低了应用程序开发人员为其应用程序吸引用户的成本

●它具有去中心化和分布式的存储协议

●它具有用于识别目的和单点登录帐户管理的开源KYC系统

●可选择性地用于交易的数字令牌

鼓励开发人员利用区块链领域当前的市场趋势，开发应用程序并在整个开发过程中与社区进行交互，扩展到最小可用产品（MVP）推出及以后。

即将到来的利用PAI协议的应用程序的示例包括基于NFT的艺术市场，该市场利用了网络协议的所有上述功能。该应用程序执行以下操作：

●艺术家可以使用单点登录（SSO）创建个人资料，并列出要出售的艺术品（数字形式和实物形式）

●所有上传的艺术品都存储在分布式分散式存储系统中

●收藏家/买家可以使用SSO创建其个人资料并浏览列出的艺术品

●收集者和购买者可以使用安全的消息传递系统进行交互

●收藏家可以使用数字令牌和/或法定货币为艺术品付款

Project PAI 鼓励开发人员在paiforum.com上与社区讨论有关新应用的想法。活跃的社区期待收到更多的项目并也使用它们。

每周更新

PAI 开发进度

下面是Project PAI核心团队的开发工作简报：

● [PAI Coin Core]发现一个问题，导致从PAI Coin Core命令行钱包进行的一些标准交易也被卡住了，这些命令行钱包也正在购买质押凭证。这导致了几起PAI币池提款延迟的事件，此后已逐案解决。

○ 按照设计，如果在质押难度调整之前未接受成块交易，则在内存池中的质押凭证购买交易将被冲销并返回给购买者。放样难度调整每144个区块进行一次。

○ 此”卡住交易”问题的根本原因是，给定质押凭证购买交易将要到期的区块高度已从交易数据中删除，然后再广播给同级。

○ 结果，在质押难度调整后，未包含在区块中的质押凭证购买交易将被购买节点准确地认为已过期，但会被同级错误地继续认为是有效的。

○ 如果购买节点随后尝试花费最初用于为过期的质押凭证购买交易提供资金的PAI币，而同行仍然认为它是有效的，则新交易将被同行标记为两次支出尝试，因此被卡住。

○ PAI Coin Core v2.3.1通过确保在执行交易时将给定的质押凭证购买交易到期的区块高度传送给对等方来解决此问题。

● [PAI Coin Core] 目前超过88％已开采的区块不包含质押凭证 (SV)。这些区块是由第三方开采的。目前尚不清楚排除SV是偶然还是有目的的。无论接下来的情况，都需要有第三方矿工提供合作，以解决这开采的问题。为此，PAI团队正在研究技术解决方案，以确保在任何来源开采的100％开采的区块中都包含质押凭证 (SV)。

○ 团队已就解决未开采的质押凭证的区块问题达成了解决方案，并将于本周开始实施。

● [PAI Coin Core] 成功完成测试后，paicoind v2.3.1 现已可用! 请您尽快更新。

● [PAI Up Android] 在PAI Up Android中发现一个问题，导致区块链同步在完成之前暂停。技术小组已经确定了问题的原因，并正在准备一个新版本以在本周提供。同时，我们鼓励用户使用PAI Up Web（https://wallet.paiup.com）来管理其资产。感谢所有Android用户在此问题上的耐心配合和理解。

● [Catena NFT市场]

○ 建立Catena NFT技术文档

○ PAI PASS服务器维护

○ PAI Pass / Catena本地安装过程已经过验证

问题和建议

有问题或者建议？

欢迎来 PAI 论坛发表!

感谢您一直以来的支持！

PAI News – May 10, 2021

Announcements & Reminders

UPDATE! v2.3.1 is finally here!

This is a REQUIRED update for all full nodes.

This update improves vote propagation to reduce the possibility of chain stalls. Full details here:

https://github.com/projectpai/paicoin/releases/tag/2.3.1

On Linux, the update can be downloaded and compiled by running the following commands in your paicoin directory:

git pull

git fetch –tags

git checkout 2.3.1

make clean

make

sudo make install

paicoin-cli stop # if your paicoind is still running

paicoind # to restart paicoind

Attention: SOLO MINERS

Please contact us if you are mining to any of the following addresses

Pv4pdcHeaCG9T3AexmST7B7ER1eUeCQ1Uj

PuE74wwEsx674GiUo6BFURh6K7P4Zi7K8Y

PcnehRyFxyh1fV4aooKhLiHrepNdJu2C2x

PddKy88kfVSSBSjd2en3BQQkA2rqtJMRVx

To reach out to us for next steps, you can email the contributors at contact@projectpai.com, or reach out to a PAI Community Lead in a PAI Community Group.

●Check out the comparison between DCR and PAI here:

○Project PAI – Hybrid Consensus vs Decred Comparison

https://paiforum.com/t/project-pai-hybrid-consensus-vs-decred-comparison/2426

○Download the PDF:

https://paiforum.com/uploads/short-url/u0E5jsDXKAL3aNgtZpZoOR5g4VY.pdf

●PAI Up iOS is now available in the US Apple App Store:

○Download PAI Up iOS here:

https://apps.apple.com/us/app/pai-up/id1533457193

●PAI Up Android is now available in the Google Play Store.

○Download PAI Up Android here:

https://play.google.com/store/apps/details?id=ai.lanier.paiup

You can also download the Android APK version and follow the mobile wallet links on paiup.com

●A demo version of the The PAI Data Protocol is now available to test, enabling users to try to encrypt and store data using the PDP2 protocol specification. It’s currently used for services such as PAI Pass.

○Test out the PAI Data Protocol here today:

https://paiforum.com/t/pai-data-storage-demo/2339

PAI Coin Pool Staking Rewards Summary

Currently pending stakes

●Total staked amount: 80.6 million PAI (+0.2%)

●Total pending rewards to date: 4.8 million PAI (+4.3%)

●Average stake duration: 50.6 weeks (+0.8%)

Matured stakes

●Total staked amount: 60.9 million PAI

●Total rewards: 14.9 million PAI [24.5% over principal]

●Average stake duration: 18.5 weeks (+2.2%)

Promotions

●Set up a full node and earn a PAI Coin Pool bonus of 666 PAI! Set up a full node according to these instructions, then email promotions@projectpai.com from the email address associated with your PCP account. In the email, include the IP address or URL of your full node. We will reply with further instructions on how to claim your reward.

● Create a pre-compiled binary version of paicoind for others to use and get rewarded 10,000 PAI Coin! We want to make it easier for community members to run full nodes and to solo mine and solo stake. One of the ways we can do this is by providing precompiled binaries of the PAI Coin Core software (which comprises paicoind and the paicoin-cli) so that users don’t have to compile the software from source.

○ In order to participate, email a link to download your pre-compiled binary (either for Linux, macOS, or Windows) to promotions@projectpai.com. The first three valid entries received for each platform will be eligible for the reward.

The Evolution of a Decentralized Economy

The success of any new creation is a function of many factors and moving parts. Success happens in stages and has overlapping phases, which requires and depends upon the stakeholders to collaborate at every stage. The challenges encountered and forecasted can vary depending upon the structure of the creation, its value proposition and regulation.

As applied to the PAI blockchain, the initial core developers set about contributing code to open source for a network protocol on the lines of bitcoin protocol with some differentiating features such as decentralized storage. The code is completely open source and any developer can utilize it quickly and also contribute back to open source as well. The network by itself is also completely decentralized such that any person is able to contribute computational resources in order to support the network. The open source mining consensus has also been designed in a way to avoid malicious attacks on the network. The APIs available as part of the open source protocol allows any developer to interface from any applications. The developers maintain the open source code and provide support to new developers as well.

Complete decentralization brings challenges such as a lack of any central governing body or leadership. Thus the onus is on the community of users, developers and supporters to move things forward as they deem fit for the improvement of the protocol. The community holds the key to the success of the network protocol. In fact, one could potentially argue and imply from Metcalfe’s law that the value of an open source, decentralized network is a function of the role of the community behind it.

An open source protocol is analogous to an operating system (OS). Its adoption will depend upon how users interact with it. This is typically done using application layers (commonly known as apps, which can translate to both web and native mobile apps). A good developer should not only consider the value proposition of the network protocol but also the supporting community behind it, their KPI’s, and come up with apps which not just make practical sense but are also sustainable on its own with a viable business and revenue model.

Blockchain as an OS is still in a very early stage of market adoption as part as applications are concerned. It presents several challenges such as high transaction fees, lack of easy to use user interfaces, safety of digital assets and the reason to use digital tokens associated with the underlying blockchain. But every challenge also brings with it early adopter opportunities.

Some reasons that developers should consider using the PAI protocol include but are not limited to:

● The PAI Protocol is fully decentralized

● All code is available and open-sourced on GitHub, along with APIs for interacting with the network protocol

● A community of users in different countries which act as the early adopter for an appropriate app and provides marketing support, thus driving down the cost of user acquisition for the app developer for their app

● It has a decentralized and distributed storage protocol

● It has an open source KYC system for identification purposes and single sign-on account management

● Digital tokens which can optionally be utilized for transactions

Developers are encouraged to take advantage of current market trends in the blockchain space and create apps and interact with the community across the development process, extending to MVP launch and beyond.

Examples of upcoming applications utilizing the PAI protocol include an NFT-based art marketplace which utilizes all the above listed features of the network protocol. This application does the following:

● Artists can create profiles using single-sign on (SSO) and list their art pieces (in both digital and physical form) for sale

● All uploaded pieces of art are stored on a distributed and decentralized storage system

● Collectors/Buyers can create their profiles using SSO and browse through listed artwork

● Collectors and Buyers can interact with each other using a secure messaging system

● Collectors can pay for art using digital tokens and/or fiat currency

Developers are encouraged to discuss on paiforum.com with the community about their ideas for new apps. The active community is looking forward to receiving more projects and using them as well.

PAI Weekly Updates

Here’s a snapshot of development work the team has been focused on:

● [PAI Coin Core] An issue was identified causing some standard transactions from a PAI Coin Core command line wallet that is also purchasing stake vouchers to become stuck. This resulted in a few incidents of delayed PAI Coin Pool withdrawals, which have since been resolved on a case-by-case basis.

○ By design, stake voucher purchase transactions in the mempool are reversed and returned to the purchaser if not accepted into a block before a stake difficulty adjustment. Stake difficulty adjustments occur every 144 blocks.

○ The root cause of this “stuck-transaction” issue was that the block height at which a given stake voucher purchase transaction was to be expired was being dropped from the transaction data prior to being broadcast to peers.

○ As a result, stake voucher purchase transactions not included in a block would be accurately considered expired by the purchasing node upon a stake difficulty adjustment but would erroneously continue to be considered valid by peers.

○ If the purchasing node then tried to spend the PAI Coin originally used to fund the expired stake voucher purchase transaction while it was still considered valid by peers, the new transaction would get flagged as a double-spend attempt by peers and consequently get stuck.

○ PAI Coin Core v2.3.1 addresses this issue by ensuring that the block height at which a given stake voucher purchase transaction is to be expired is transmitted to peers upon transaction execution.

● [PAI Coin Core] Currently, over 88% of blocks mined do not include stake vouchers. These blocks are being mined by a third party and it is unclear if the exclusion of the SVs is accidental or purposeful. In either case, barring cooperation from the third-party miner(s)—which we have called for—a mechanism to address this behavior is necessary. To that end, the team has been researching technical solutions to ensure that Stake Vouchers are included in 100% of blocks mined, regardless of origin, moving forward.

○ The team has agreed on a solution for addressing the issue of blocks without stake vouchers being mined and will begin to implement it this week barring any more urgent needs that arise.

● As noted above, PAI Coin Core (paicoind) v2.3.1 is now available! Please update at your earliest convenience.

● [PAI Up Android] An issue was identified with PAI Up Android causing a blockchain sync to pause prior to completion. The team has identified the cause of the problem and is preparing a new release to make available this week. In the meantime, users are encouraged to use PAI Up Web (https://wallet.paiup.com) to access their funds. We thank all Android users for their patience and understanding with this matter.

● [Catena NFT Marketplace]

○ Ongoing technical documentation work

○ Server maintenance for PAI PASS

○ Verified local install process for PAI Pass/Catena

Questions? Comments? Feedback?

Sound off on PAI Forum!

Thank you for your support!

来源：pai