主网升级公告和信息
01
PAI 区块链主网升级硬分叉将会在区块高度 154,550 进行，对应于太平洋时间约2020年10月6日上午10:30（约北京时间2020年10月7日凌晨1：30）
PAI区块链过渡到混合共识将从硬分叉开始，并根据以下时间轴进行：
（上图时间仅为估算时间，具体时间取决于区块高度到达时间）
●从2020年10月6日分叉前的几个小时开始，PAI Coin Pool的提币和存币将会暂停，直到完成向混合共识的过渡为止。 一经确认分叉后的 PAI 区块链的稳定性，便会立即恢复充币和提币。我们将在分叉临近时进行更准确的估算，并宣布恢复充提的具体日期和时间。
● 如果您使用PAI Up 移动App钱包，请按照此教程写下您的助记词。 您需要用它来在新版本的PAI Up（一个单独的移动应用程序）和/或 PAI Up 网页钱包（wallet.paiup.com）上面恢复您的钱包。
● 以下是与PAI区块链硬分叉相关的其他信息：
如何准备混合共识硬分叉（最新版）：今天的另一篇文章
如何设置和维护PAI币全节点
混合共识分叉之后，PCP PAI币池中的挖矿和质押将如何变化？
如何进行单节点质押：即将推出！
如何进行单节点挖矿：即将推出！
写下您的PAI Up 钱包助记词
在您的PAI Up 移动App钱包中，进入” 菜单→安全设置→助记词→再次写下助记词”。接下来输入您的PIN，然后记录下显示的12个单词并将其存储在安全的地方。
每周更新
02
PAI 混合共识
下面是我们开发人员在上周的一些提交/ 更新：
●解决了MiningCore和cpuminer之间的Stratum序列化问题；
●建立了一个由paicoin，采矿核心和cpuminer组成的完整的测试系统；
●开始有关支付系统更新的工作；
●在混合共识叉之后完成了Stratum集成的cpuminer更改；
●致力于在cpuminer中为每个挖矿任务启用单一解决方案；
●在paicoin中进行混合共识分叉后增加了可配置的初始强度（difficulty）；
●在权益验证高度之后添加了币库地址白名单的可配置到期时间；
●在混合共识分叉之前调查了特殊的交易验证问题；
●研究了内存池中的撤销和购买与现有冲突过多的问题，并在自动撤销器和自动购买器中添加了检查以在购买前检查内存池，以避免这些冲突；
●在CreateNewBlock中添加了代码，以等待更多的投票（以防万一），以允许挖出的区块包含尽可能多的投票。
问题和建议
03
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PAI News – September 23, 2020
Hard Fork Announcements & Information
The PAI Blockchain Mainnet Hard Fork will occur at block height 154,550, corresponding to approximately 10:30 AM Pacific Time (5:30 PM UTC) on October, 6, 2020.
PAI Coin Pool deposits and withdrawals will be suspended starting a few hours before the fork on October 6, 2020 until the transition to Hybrid Consensus is complete. Deposits and withdrawals will be resumed as soon as the stability of the forked blockchain is confirmed. More specific dates and times will be announced closer to the fork, when the estimates will be more accurate.
If you use PAI Up Mobile, WRITE DOWN YOUR PAPER KEY according to the instructions below. You will need this to restore your wallet on the new version of PAI Up, which will be a separate app, and/or PAI Up Web Wallet.
Here is additional information relevant to the fork:
●How to prepare for the Hybrid Consensus hard fork:
https://paiforum.com/t/09-23-hybrid-consensus-hard-fork/2142
●How to setup and maintain a PAI Coin Full Node:
https://paiforum.com/t/building-and-maintaining-a-pai-coin-full-node/2138
●How mining and staking on PAI Coin Pool will change after the Hybrid Fork:
https://paiforum.com/t/pai-coin-pool-and-hybrid-pow-pos/2130
●How to solo stake: Coming soon!
●How to solo mine: Coming soon!
Write Down Your PAI Up Paper Key
In your PAI Up Mobile, go to Menu → Security Settings → Paper Key → Write Down Paper Key Again. Enter your PIN, then physically write down the 12 words that are displayed and store them in a safe place.
PAI Hybrid Consensus
Here’s a snapshot of development work the team has been focused on:
●resolved Stratum serialization issues between MiningCore and cpuminer;
●set up a full test system composed of paicoin, mining core and cpuminer;
●started work on payment system updates;
●finalized cpuminer changes for Stratum integration after hybrid consensus fork;
●worked on enabling single solution per mining job in cpuminer;
●added configurable initial difficulty after hybrid consensus fork in paicoin;
●added configurable expiration of coinbase address whitelist after stake validation height;
●investigated special transaction validation issues before hybrid consensus fork;
●investigated an issue where there were too many revocations and purchases in the mempool conflicting with existing ones, added checks in the auto-revoker and auto-buyer to check mempool before buying to avoid these conflicts;
●added code in CreateNewBlock to wait for more votes, in case they are in transit, to allow mined blocks to include as many votes as possible
Questions? Comments? Feedback?
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Thank you for your support!
来源：PAI
