Emission schedule

Lately the founders have been facing questions about the emission schedule. Instead of responding to these questions individually, we find it more appropriate to post a public response: The emission schedule will not be changed by any of the founders, nor will any such change be endorsed by a founder in the future.

The blockchain is not merely “internet money” as the legacy financial sector is perfectly capable of creating great apps that allow for the easy transfer of digitized money. Nor is the blockchain merely a casino that allow people to gamble on the latest fad in the hopes of earning 10.000 % on their investment. The legacy financial sector is also capable of delivering that. As we see it, the blockchain is first and foremost a rebellion against arbitrary power over money. It exists to give people, if not certainty of the value of their coins in the future, then at least certainty of the rules and future amounts of those coins. If such a rebellion is to be successful, we cannot allow for the replacement of one privileged class over another; we cannot give ourselves the power that we wish to take away from other. Setting the precedence that the emission schedule is up for debate gives maintainers and stakeholders the power that no one must have. Furthermore, it jeopardizes one of the most appealing features of (good) blockchains: the inelasticity of the money supply. If the price of gold rises, gold resources that were previously uneconomical to extract might become valuable enough that they can be extracted profitably, leading the available supply of gold to rise when the price rises. Better money than gold does not have this deficiency, its supply is unaffected by the demand, in either direction.

“OK, then. I guess increasing future emissions are bad but what about decreasing them? Can’t you slow down inflation, or reduce the total supply to create a price boost that will attract more retail investors and thus make the network more popular?” No. We cannot. First of all, it would violate the principle that the emission schedule is fixed. Secondly, it would be unfair to future stake holders and thus reduce the long-term potential of Neptune. To see why, take the extreme case where all the coins are minted in the first week. This setup would only allow very few people the opportunity to mine Neptune, and the network would forever be dominated by those early miners. If the emissions are instead distributed over decades, then many more miners have a fair chance to participate in the minting. That’s one of the reasons that emissions must be distributed over long time horizons.

The time to debate the emission schedule was prior to launch of main net on February 11 2025. Now that main net is launched that window has passed. After all, code is law.

It should be noted, though, that the author is of the opinion that a functional blockchain takes precedence over the emission schedule. After many halvings, decades from now, it might be the case that the incentive to mine is not sufficient to protect the network against double-spending attacks, since reorganizations become cheap due to the diminished incentive to mine. If that were to happen, it would be up to the community and to the market in the future to consider a change of the rules to allow for tail emissions, such that there always exists an incentive to mine. For the author, this would be the only acceptable argument for a change to the emission schedule: to keep the blockchain functional, not to attempt to manipulate a price.

a) I am liking this response. edit: What is confusing is how the fork got ~66% of the value? Fork price is 4.28, NPT price is 0.20. Fork has a total supply of 4,405,665 coins, giving FDV of 18.8m usd. NPT (42m x 0.20) a FDV of 8.4m usd.

b) i am seeing the whole thing of the fork (per their Medium article) was to cut the “circulating emissions” after year 3 (the forkers claim the emissions on the original chain start increasing in year 3)

c) and to cut the premine from 831k units by half …I’m not finding the exact # on the fork’s site (neptune.io) however.

d) neptune.io has a chart of the block rewards. Neptune.cash does not

e) other: the fork has a 5m block time. The original is at 9.8m (i found it now, this is shown on neptune.cash)

I fully agree with sword-smith’s answer.

Altering the emission schedule post-launch is a violation of the network’s monetary policy and calls its immutability into question.

Furthermore, when comparing the yearly supply inflation of NPT against other privacy coins, it’s clear that Neptune Cash’s chosen emission schedule is closely aligned with established competitors like Zcash (note: Bitcoin has the same emission schedule as Zcash). It is not significantly higher than Monero’s either. For reference, the privacy coin Grin - with its constant block reward - maintains significantly higher supply inflation compared to the others.

(Supply inflation = no. of tokens created during the year / total supply at the start of the year)


Inflation represented using logarithmic y-axis.

Inflation represented using linear y-axis.

Looking at the supply of NPT and its competitors from a different perspective, we can examine the percentage of the total supply emitted each year. Due to Monero’s tail emission, I have chosen a 30-year period for this comparison. It’s a timeframe sufficiently long to assess medium/long-term distribution.

The resulting curves are similar and quite revealing, as the majority of the token supply is generated during the early years. Even for those who do not mine, a higher emission rate puts downward pressure on the token price, showing why there is a clear first-mover advantage.

In conclusion, I find the argument that Neptune Cash’s emission is too high to be unconvincing. If anyone holds this view, I would be interested to hear the specific reasoning behind it. While it is understandable for those who entered at a $10 or $20 price point to feel frustrated by the current price action, at a $600k market cap, the asymmetric risk-reward profile of the token is, in my opinion, undeniable.

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Neptune is just gonna run into the same issue Bitcoin’s dealing with which is low security due to low and then zero block rewards long term though.

I don’t understand why you guys just didn’t go for uncapped tail emissions.

When Monero’s tail emission began, its annual supply inflation was about 1%.

For Neptune Cash, it takes four halvings (12 years) to reach the same level. Therefore, this will not become a potential issue anytime soon, even if the number of transactions does not increase sufficiently. As Thorkil said above, the community can come to a consensus then on introducing a modest tail emission if it is needed to ensure security in the future. I’m confident that an agreement would be reached easily in such a scenario.

We both know that’s not gonna go down smoothly.

Imagine convincing the BTC community today of a tail emission. Not gonna happen.

As far as I know, Bitcoin currently reigns supreme on the hashing power front. It’s nowhere close to a pressing issue, now or any time soon.

Will get much easier to get consensus if it actually becomes an interesting issue of any practical relevance.

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