Recently, I've been looking into miners' payment scheme choices and found that many people still don't clearly understand the difference between PPS+ and PPLNS. These two models each have their own reasons and merits, so it's worth a good discussion.

Let's start with a reality: if you only have a few mining rigs, solo mining is basically hopeless. That's why everyone is flocking to mining pools. Mining pools aggregate the computing power of miners worldwide, solving hash puzzles together, and then distribute the block rewards based on contribution. But here’s the problem: some people connect 10 rigs, others only 1. How can rewards be fairly distributed?

Over the years, more than a dozen distribution schemes have appeared, and currently, there are five mainstream ones. Among them, PPS+ and PPLNS are the most widely used. PPS+ is an upgraded version introduced by ViaBTC in 2016. Its core idea is: block rewards are distributed via PPS, and transaction fees are distributed via PPLNS. The advantage of this approach is high stability; miners can predict their income without worrying too much about the luck factor in mining pool performance.

In comparison, PPLNS is more "exciting." It settles based on the most recent N valid shares. When the pool finds a block, rewards are distributed according to your share of these N shares. This means your income fluctuates depending on when blocks are found. Sometimes, luck is on your side, and earnings are high; other times, luck is poor, and earnings are low.

From what I’ve seen, choosing between these schemes mainly depends on your risk preference. If you're a miner who prefers stable cash flow and doesn't want to worry too much, PPS+ is indeed more suitable. The fixed return rate provides peace of mind. But if you have patience, are willing to accept income fluctuations, and trust the mining pool, PPLNS might give you higher long-term gains, especially when the pool is lucky.

Currently, ViaBTC’s KAS mining pool supports PPS+, offering KAS miners more flexible options. Overall, mainstream mining pools are optimizing these payment models, increasing miners’ choices. The key is to decide based on your own situation and your understanding of schemes like PPLNS—don't follow the trend blindly.