5 billion Pi will be reserved for liquidity pools to provide liquidity for any ecosystem participants, including Pioneers and Pi apps developers. Liquidity is key for an ecosystem to be viable, active, and healthy. If businesses or individuals want to participate in ecosystem activities (e.g., by selling and buying goods and services in Pi), they must have timely access to Pi. Without liquidity, the ecosystem will not have a healthy flow of Pi, hence harming the creation of utilities.
将为流动资金池预留 50 亿 PI，为任何生态系统参与者提供流动性，包括先锋和 PI 应用程序开发人员。流动性是生态系统生存、活跃和健康的关键。如果企业或个人想要参与生态系统活动(例如，通过在 PI 中销售和购买商品和服务)，他们必须及时获得 PI。如果没有流动性，生态系统就不会有健康的 PI 流动，从而损害公用事业的创造。
As discussed in the Roadmap chapter, one benefit of the Enclosed Network period of the Mainnet is to allow calibrations on the token model, if any, based on the early Mainnet results. Therefore, the token model is subject to tweaking before the Open Network period starts. Also, in the future, for the health of the network and ecosystem, the network may face questions such as whether there needs to be any inflation after the completion of the distribution of the 100 Billion Pi. The inflation may be necessary to further incentivize contributions through more mining rewards, make up for any loss of Pi from circulation due to accidents or death, provide for more liquidity, mitigate hoarding that inhibits usage and utility creation, etc. At that time, the foundation and its committees specialized in these matters will organize and guide the community to reach a conclusion on the matter in a decentralized way.
正如路线图章节中所讨论的，封闭的 Mainnet 网络期的一个好处是允许根据早期的 Mainnet 结果对令牌模型(如果有的话)进行校准。因此，令牌模型会在开放网络时期开始之前进行调整。另外，在未来，为了网络和生态系统的健康，网络可能会面临千亿 PI 分配完成后是否需要有通胀等问题。通货膨胀可能是必要的，以通过更多的采矿奖励来进一步激励贡献，弥补因事故或死亡而造成的 PI 流通损失，提供更多的流动性，减轻阻碍使用和公用事业创造的囤积行为，等等。届时，专门从事这些事务的基金会及其委员会将组织和引导社区以分散的方式就此事达成结论。
Mining Mechanism 挖掘机制
Pi Network’s mining mechanism has been allowing Pioneers to contribute to the growth, distribution and security of the network and be rewarded in Pi meritocratically. The pre-Mainnet mining mechanism has helped the network achieve an impressive growth of over 30 million engaged members, a widely distributed currency and Testnet, and a trust graph of Security Circle aggregates that will feed the consensus algorithm of the Pi blockchain.
Pi Network 的挖掘机制一直允许先锋公司为网络的发展、分布和安全做出贡献，并在 Pi 中定期获得奖励。Pre-Mainnet 挖掘机制帮助网络实现了 3000 多万参与成员的惊人增长，广泛分布的货币和 Testnet，以及将为 PI 区块链的共识算法提供支持的 Security Circle 聚合的信任图。
Looking ahead into the Mainnet phase, Pi Network needs further contributions, as well as more diverse types of contributions from all its members, to become a true economy while continuing its growth and inclusion. In the Mainnet phase, we want to further achieve decentralization, utilities, stability and longevity, in addition to growth, inclusion, and security. These goals can only be achieved if all Pioneers in the network work together. Hence, the new Pi mining mechanism is designed to achieve these goals by incentivizing all Pioneers to contribute diversely to the network based on the same meritocratic principle. Below, we first describe the pre-Mainnet mining formula, followed by the changes in the Mainnet formula.
展望主网阶段，Pi Network 需要更多的贡献，以及所有成员更多样化的贡献，才能成为真正的经济体，同时继续增长和包容。在 Mainnet 阶段，除了增长、包容和安全之外，我们还希望进一步实现去中心化、公用事业、稳定性和长寿。这些目标只有在网络中的所有先锋人员共同努力的情况下才能实现。因此，新的 PI 挖掘机制旨在通过激励所有先锋公司基于相同的任人唯贤原则为网络做出不同贡献来实现这些目标。下面，我们首先描述 Mainnet 之前的挖掘公式，然后描述 Mainnet 公式的变化。
Pre-Mainnet Formula 公式
The pre-Mainnet mining formula demonstrates a meritocratic determination of a Pioneer’s hourly mining rate. Actively mining Pioneers received at least a minimum rate and were further rewarded for their contributions to security and growth of the network. The following formula determined the rate at which Pioneers mined Pi per hour:
Pre-Mainnet 采矿公式展示了先锋每小时采矿率的任人唯贤的决定。积极采矿的先锋们至少得到了最低费率，并因他们对网络安全和增长的贡献而获得进一步奖励。以下公式确定了先锋公司每小时开采 PI 的速度：
M = I(B, S) + E(I), where
M is the total Pioneer mining rate,
I is the Individual Pioneer base mining rate,
B is the systemwide base mining rate,
S is the Security Circle reward, which is a component of the individual Pioneer base mining rate from valid Security Circle connections, and
E is the Referral Team reward from active Referral Team members.
The systemwide base mining rate B started as 3.1415926 Pi/h and halved every time the network of Engaged Pioneers increased in size by a factor of 10x, starting at 1000 Pioneers. As listed below, there have been five halving events thus far:
M 是先锋公司的总开采率，
我是个人先锋基地开采率，
B 是整个系统的基本开采率，
S 是安全圈奖励，它是有效安全圈连接的个人先锋基本开采率的一个组成部分，以及。
E 是来自活跃的推荐团队成员的推荐团队奖励。
全系统的基本开采率 B 从 3.1415926 皮/小时开始，每增加一倍，从 1,000 名先锋开始，每增加一倍，采矿率就会减半。如下所示，到目前为止，已经有五个减半事件：
I(B,S) = B + S(B)
S(B) = 0.2 • min(Sc,5) • B, where
Sc is the count of valid Security Circle connections.
E(I) = Ec • I(B,S) • 0.25, where
Ec is the count of active Referral Team members who mine concurrently.
The mining formula can also be written as a multiple of B:
M = I(B,S) + E(I)
M = [B + S(B)] + [Ec • I(B,S) • 0.25], or
M = [B + {0.2 • min(Sc,5) • B}] + [Ec • 0.25 • {B + {0.2 • min(Sc,5) • B}}], or
M = B • [1 + {0.2 • min(Sc,5)} + {Ec • 0.25 • {1 + 0.2 • min(Sc,5)}}], or
M = B • [(1 + Ec • 0.25) • {1 + 0.2 • min(Sc,5)}]
Pre-Mainnet Systemwide Base Mining Rate 全系统基础采矿率
Every active Pioneer received at least the system wide base mining rate (B). That is, if Sc = 0 and Ec = 0 in the mining formula above, then M = B. In any case, the total Pioneer mining rate was a multiple of the systemwide base mining rate. The value of B was pre-determined before the Mainnet, and as shown in the table above, it changed only five times. The max supply was undetermined due to the dynamic progress of the pre-Mainnet mining mechanism, e.g. how large the network is and how fast the network reaches the next halving event. It would only be determined when B dropped to 0. However, as explained in the next section, the value of B at Mainnet is calculated in real time, dynamically adjusting based on the total annual Pi supply and the total mining coefficient across all the Pioneers. The supply of Pi is finite at Mainnet
每个活跃的先锋至少得到系统范围内的基础采矿率(B)。也就是说，在上面的挖掘公式中，如果 SC=0 和 EC=0，则 M=B。在任何情况下，先锋公司的总开采率都是系统范围基本开采率的倍数。B 的值是在 Mainnet 之前预先确定的，如上表所示，它只更改了五次。由于 Pre-Mainnet 挖掘机制的动态进展，例如网络有多大以及网络到达下一个减半事件的速度，最大供应量无法确定。只有当 B 降到 0 时才能确定。然而，正如下一节所述，Mainnet 的 B 值是实时计算的，根据每年 PI 供应总量和所有先锋公司的总开采系数动态调整。主网中 PI 的供给是有限的
Security Circle Reward 安全圈奖励
Pi’s consensus algorithm relies on a global trust graph, which is aggregated from the millions of intertwining Security Circles of individual Pioneers. Thus, a Pioneer was rewarded with additional Pi per hour for each new valid Security Circle connection, up to 5 such connections. The Security Circles are so central to the security of the Pi blockchain that the Security Circle reward raised the total Pioneer mining rate in two ways:
Pi 的共识算法依赖于一个全局信任图，该信任图是由数百万个相互交织的先锋安全圈聚合而成的。因此，对于每个新的有效安全圈连接，先锋每小时可获得额外的 PI 奖励，最多可达 5 个此类连接。安全圈对 PI 区块链的安全至关重要，安全圈奖励通过两种方式提高了先锋总开采率：
by directly adding to the individual Pioneer base mining rate (I), and by boosting the Referral Team reward, if any.
直接增加个人先锋基地开采率(I)，并提高推荐团队奖励(如果有的话)。
In fact, a full Security Circle—that is, having at least five valid connections—doubled both the individual Pioneer base mining rate and the Referral Team reward.
事实上，一个完整的安全圈子--也就是至少有五个有效的联系--会使个人先锋基地的开采率和推荐团队的奖励都翻一番。
Referral Team Reward 推荐团队奖励
Pioneers can also invite others to join Pi Network and form their Referral Team. The inviter and invitee share an equal split of the Referral Team bonus rewards, that is a 25% boost to their respective individual Pioneer base mining rates, whenever both are mining concurrently. Pioneers mined more Pi per hour with each concurrently mining Referral Team member. This Referral Team reward recognized the Pioneers’ contribution to the growth of the network and the distribution of the Pi token.
先驱者也可以邀请其他人加入 PI Network，组成他们的推荐团队。邀请者和被邀请者平分推荐团队的奖金奖励，即当双方同时开采时，他们各自的先锋基地采矿率将增加 25%。先锋们每小时挖掘更多的 PI，同时挖掘转诊团队的每个成员。这项推荐团队奖励表彰了先锋队对网络发展和 PI 令牌分发的贡献。
