[Discussion] Contract to create web interface code that one can use to sell/buy Nubits with fiat online

Draft proposal, although it’s basically just what you wrote above. I read the thread on hashing motions but @assistant didn’t reply to my test message hash; either I did it wrong or it’s down.

@dysconnect, there is a difference between liquidity services and software development. I have no liquidity to provide. I am able to design and build software.

I am aware there are significant security considerations with this. Many of them are external to this project: for instance, an operator of such a site will need to secure their machine to start with which is non-trivial. I am not signing up for operating a service like this. Nor do I expect that my code will be perfect with regard to security but frankly this isn’t an especially complicated task from a security standpoint, it’s “merely” that it’s important to get right.

Edit: Eh, I don’t like calling it not complicated either…I mean, sure, there are interesting edge cases of various sorts. But it’s not like anything here is original research in the sense of solving some problem from an algorithmic standpoint.

A customer can send more funds than the site has available to convert and that will need to be handled. A customer could attempt a double-spend attack with NBT, and so a configurable option for number of confirmations required makes sense. I’m certainly glad to listen to specific concerns.

Can you give a few examples of possible security issues? The usecases given in the OP seem to expose very small attack surface although I think we should look hard into it.

As for profitablity, it’s not in the scope of this project to guarantee profit for the user. But I see almost no cost of running the site except for opportunity cost of funds put into the system and server cost, which is zero if you already has an VPS or run it on a Ras-pi. If set with 2-3% spread, which is normal in the Internet exchange world, profit (not normalized with hack risks) doesn;t seem hard to achieve.

On the other hand profit might not be the goal for some users at all. Nu could use this system to set up many not-for-profit nubit-fiat liquidity providing mini exchanges, the advantage being -


Haven’t had time to read all of the above but I’ve been longing for a direct way to buy Nubit - Fiat and sell Nubit - Fiat without the need of an exchange ever since I’ve heard about Nubits! This would help us out so much and have the additional benefit of us being able to remove the costly support of numerous exchanges in favor of B&C Exchange when it arrives. Customers could use Fiat to buy Nubits directly and then use those Nubits to fund their trading account at B&C Exchange!


This is what makes me hesitate to set this up, although the idea is definitely interesting. Many of these rules apply also in other countries like New Zealand.

Have you looked into Cryptopia at all? I know they operate out of New Zealand (they’re the only exchange for NYAN currently, which is part of my interest in projects like B&C Exchange).

It’s frustrating, because this would be a really cool type of operation to be able to run. I’ve wanted to do “buyabit” concepts and stuff like that before but the legal concerns make it untenable for me.

I should be safe writing and testing it though. And it would be fun to see what experiences people have operating it. I would expect the spread to be relatively small like NuBits typically has, so presumably it would be people with a lot of liquidity for the operation and a lot of volume going through who would do well with it.

A “LocalBitcoins” version for Nubits would be something interesting.

But I dunno what the required changes are…

We’ve got a different situation here…

Although @CoinaDay is gone, it’s still a valid point that contracting a community member to do the development has advantages. So I think I will just ask @desrever @CoinGame @woolly_sammoth @willy @woodstockmerkle @ttutdxh @dysconnect @jooize @Ben and any other developers I missed (and I can only mention 10 users in a post) – if any of you are interested in developing the web-based Nubit-fiat exchange software?

This software is not only a convenience utility to the Nubits seller/buyers. It is potentially as important as the Automated Liquidity Pool (ALP) software that enables individuals to provide liquidity to pegs. The difference is that ALP works for Nubits/crypto pairs on centralized exchanges; this software is for Nubit/fiat pairs on a single web page, taking advantage that there is no exchange rate to track for NBT/USD and no order book is required. The software is decentralized and free from exchange risks. It’s a missing piece of Nu liquidity provision system.

I welcome comments and suggestions on aspects of the proposal – scope, price, should it be a bounty or a fixed price contract offer?


Paging @glv @mably @JetJet13 @peerchemist @sandakersmann @erasmospunk @SigmundAlpha @pennybreaker please read the post above. I can only mention 10 users in a post.

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thanks @mhps to bump this up . I will add this in the backlog, unfortunately at the moment I won’t be unable to allocate resources to it. I forwarded this post to a friend who might be interested

Personally I think the networks money is better spent throwing it at developing the NuBer LocalNuBits concept I wrote about.

Developing a gateway connected to payment processors puts the people in charge of that service in significant risk. Those processors could choose to shutdown the service, the service has to earn some money for the people running it (harsh truth… it won’t earn them anything. The demand for NuBits isn’t there yet). There’s probably other downsides.

Why does updating NuDroid to assist in becoming a LocalNuBits platform make more sense? Local NuBits traders can trade literally anything for NuBits. It doesn’t just have to be USD… It can be Euro, Yuan, Bitcoins, Ethereum, a car, cookies, cat food… anything. The platform would simply streamline the process of getting someone who wants NuBits in touch with someone willing to trade for them. Any web service connected to the platform wouldn’t actually be involved in any trading, and because of that it’s much less likely to be shut down. Any connected web service would be for metadata or statistics of the LocalNuBits platform. Trading would happen directly between buyers and sellers locally. It would put the legal obligations on the shoulders of the people making the actual trades as well. This would also encourage moving NuBits where we want them. Off exchanges and into peoples pockets where they will most likely use them. Like cash in their pocket instead of sitting on some exchange account (assuming they’ll meet somewhere in public and trade via mobile apps). Even if the mobile app gets banned the apk can still be distributed and installed.

I think there’s a lot more benefit in trying to encourage individuals to transfer NuBits among each other (even personally for goods and services).


I think these two projects don’t overlap in scope much and from what you describe the LocalNuBits site and NuDroid upgrade would cost in the tune of $20k while the barebone site in the OP will cost more ten times less – the cost is not only in the money, but also project management difficulty. So we are talking about an apple and an orange.

I don’t understand why developing a gateway could put the service provider at risk. If you mean the service provider has risk with the regulators, we see that regulation risk varies greatly across the world. In the US where traditional financial sector provides fairly good service and rules with an iron fist through the government there is little survival space to e-currrencies and cryptocurrencies. But in the emerging economic countries people are not happy with services from the banking sector and the regulations toward alternative services are more friendly, e-currrencies and cryptocurrencies thrive. That is why the biggest and most number of processors and exchanges are from Eastern European countries, Hongkong and China. The site in the OP could significantly reduce the difficulty for aspiring small service providers to buy/sell nubits.

It’s not truth but your opinion, unless you can show supporting evidence. I find more than 30 PEGs sites trading cryptos with e-currencies. How come they don’t get sutdown and for all we know are making money?

Further more, why the service provider of such NBT-fiat site have to make money from selling currencies? Does any Nu liquidity provider make money that way? With such software Nu will be able to pay NBT-fiat service providers just like it does with pool operators, at greatly reduced rate because exchange default risk is reduced.

Anyway if someone can promise to manage the project you propose I will support it. I will still promote the creation of the simple web interface for nbt/fiat in the OP because I like simple focused tools that users can tinker with and use as a building block to do amazing things even the creator of the tool might not imagine – and it only costs 1.5k.


I’m not comparing the services directly. We’re talking about what the market prefers. So maybe we are talking about apples and oranges, but we’re not doing it in the context of comparing them. We’re talking about whether or not the market prefers apples or oranges which is apt in this discussion. Also, i’m not sure where you come up with those figures but I’m fairly confident they’re conjecture at best. The difference between the two approaches is that we actually have a very talented developer and project manager for NuDroid who we can work with to define parameters for the project. That will also give us an accurate cost projection for shareholders. We have nobody to rely on in building the gateway service.


Check out transactions per day. Most of that is probably ALP payments. Our transaction volume on CoinMarketCap compared to on blockchain transactions tell the clear story of what is happening. For all we know it could be one person driving that volume. That is why I think encouraging people to get NuBits on their phone (which LocalNuBits trades would encourage) is better than some web service to purchase NuBits which has already existed and ultimately removed our asset. The suggestion of building a stand alone service for this purpose is neither novel or interesting.

https://bittylicious.com/ had NuBits available to buy through credit card for a while. I wasn’t expecting this but it looks like they took them down. Why? Probably because nobody bought them.

I think we’re confusing a bounty with costs here. Saying we’re willing to spend 1800 NBT is different than saying it will only cost us 1800. Considering nobody is jumping at the offer (at least openly) so i’m assuming it’s not a very attractive offer. Maybe it’s better to invest the time and resources in developing something more interesting. Make it very easy for anyone that wants to sell NBT to connect with people who want to buy it locally, and let them negotiate what pair they will tade with. Whether it’s NBT/FIAT, NBT/Car NBT/Baseball cards collection. The sellers will need to replenish their supply and they can get them off of the exchanges onto their phones. Which is what we want to encourage.

I think network money is better spend on trying something new, interesting, and innovative. Instead of trying to recreate existing solutions that evidence supports won’t be utilized. Though if someone decides to take up the bounty offer and build out the service then great. I’m just not sold it’s something people will be excited about or use. I think people going to crypto events showing off their NuDroid LocalNuBits wallet and trading on the spot is a much more compelling experience to promote.

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I think there’s a place and maybe a need for both.
Each of recreating something old and creating something new has benefits.
I’d like to see both tools.


Sorry for derailing the discussion but I was summoned to this thread and my thoughts on it obviously differ.

I don’t agree that these two project compete much. The bounty, if approved, will be posted on e.g. bitcointalk to attract developers outside Nu community. Neither project posted a timeline to finish so there is currently no certainty they will happen at the same time.

That is OK. Go on with defining parameters. I might even chip in. Developing the web interface could be done before “defining parameters” finishes.

That is EXACTLY why I think we should break out this dead end catering-for-the-traders economy model of Nu by trying to make nubits available on e-currency exchange world where poeple get alt financial service to pay for goods and services.

Do you agree that the proposal you made is at least 10 times more complex and costly than the web interface nbt/fiat software?

I think a web interface that could be adapted to buy/sell/even get paid in nubits on anyone’s own personal page is new, interesting, and innovative. I see support from @masterOfDisaster, @dhume, @creon, @desrever, @cryptog, @crypto_coiner , @JordanLee, @nmei, @Nagalim

Further more, this is part of Nu infrastrucure. I wouldn’t disagree with improving liquid provision software just because it doesn’t seem new, interesting, and innovative.

I will update the OP on applications in other uses and Nu infrastructure.


I have updated OP from title to explanation to requirements based on input I got.

  • bounty is changed to contract;
  • possible applications that might not be obvious;
  • dev and payment schedule
  • requirement refactoring
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I will just offer a link to where I brought up this topic - but I was discussing PayPal…

Not that there are hard feelings, but there was a lot of negative input in that thread. It boiled down to:

  • Paypal charges too much in conversion fees
  • As a money exchange you have to ensure you won’t become a money laundering site

I was ready, but I pulled back. I still think a direct exchange is a great idea. But I don’t know how we get around exchange fees and KYC/AML.

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I would support such a project.

This has to be left to the owners and users of the website. Some owners may already have licenses and want to offer Nubits as part of their existing business, some may be allowed, under local laws, to operate with no redtape if the daily amount is below certain level.

We just provide tools to facilitate Nubits adoption. That is all.

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Just bumping it to prevent it from being buried too deep. It’s important after all…