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5601  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 09:09:59 PM
brief recap

Bounty 100000 NXT for each of top 5 DAC's
Need community suggestions for the set of DACs that will make etherium least relevant

James

Thanks jl777 for your efforts on these initiatives, really like the energy, I'll help wherever I can.
Still sure I work in marketing? Smiley
5602  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 09:07:49 PM
brief recap

Bounty 100000 NXT for each of top 5 DAC's
Need community suggestions for the set of DACs that will make etherium least relevant

James

Do you mean 100000 NXT for implementation?
Yes. First we need a lists of the top 5 DAC's
Then the 100K NXT authorized for valid implementations (open sourced)
My understanding is that nexern's client will have built in support for DNA, which allows DAC's to be quickly implemented. Not sure how much work it will be. Also, as long as the fee structure of the DAC's are not excessive, in addition to bounty, developer of DAC will make income from DAC. I guess we need to define acceptable fee structure for the bounty funded DAC's, but first we need the DAC ideas.

We need ideas for what exact DAC's will make NXT dominate etherium. maybe someone can research what DAC's etherium is promoting? Gotta go offline for a few hours.

James
5603  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 09:01:26 PM
brief recap

Bounty 100000 NXT for each of top 5 DAC's
Need community suggestions for the set of DACs that will make etherium least relevant

James
5604  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 08:50:42 PM
OpenSSH just adopted Curve25519 as default.

OpenSSH version 6.5 adds support for the key exchange using elliptic-curve Diffie Hellman within cryptographer Daniel Bernstein’s elliptic-curve Curve25519. A 32-byte secret key will now be the default when both the client and server support it.

http://threatpost.com/boasting-better-encryption-bug-fixes-openssh-6-5-released
Hmmm.. Does this mean BCNext was ahead of the rest of the industry in choosing the Curve25519? Might perhaps this show that BCNext is one of top cryptographers in the world?

James
5605  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 08:44:56 PM
You clearly have a lot of energy and now a lot of NXT, so why not work to make NXT increase in value? It will only help you add to your NXT that you have been "borrowing" from the poor newbies with weak password and your NEX suckers

Just BUILD on NXT and that would add value. You don't need to be a troll anymore now that you have so much NXT in your pockets.

The issue here is that Friction unfortunately has no skills to build anything worthwhile
He is very skilled at automating BTT acct creation. Look at his sockpuppet army. Probably has 25%+ of NEM. He also knows enough tech to sound halfway intelligent, just has problems with the details and gets carried away with preconceived conclusions. If he didn't ignore facts, he could be a very useful tester and even come up with some cool ideas.

We just need to convert him. Maybe when he scams the one million NXT from the hapless NEX crowd, the NXT will automatically convert him?
5606  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 08:41:31 PM
I'm tired of people making these dumb assumptions that proof of stake forging makes the rich richer, leading to some sort of financial crisis when they have all the nxt. this is only true if they hoard them forever and never trade them... also, the only reason someone has >10k in transaction fees is because of the alias landslide... im sure the fees each day is pretty insignificant right now.

says the guy that had 28 million NXT in the account...  http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=7579216551136708118

This rich (He took a big risk) vs. poor (you didn't take any risk) obsession is really getting tiring, here was my response to this a few days ago:

I think instead of focusing on the rich getting richer, we should focus on the poor not getting poorer.

In Bitcoin (and all it's clones), holders are basically paying a fee (10% of their holdings a year currently) just to hold their bitcoins. This fee is paid to miners, and the inflation it causes devalues everyone's stake. So the only people not getting poorer are ASIC manufacturers+friends mining huge amounts of bitcoin to dump, and passing that cost onto bitcoin holders. Thus, this is a very real situation of the rich getting richer, and the poor getting poorer.

In NXT, everyone who is a stakeholder is guaranteed to not lose a single percent of their stake, ever. Sure, the rich may forge the majority of blocks, but that in no way affects the small stakeholder's holdings. This lets the small stakeholder build his stake up over time (let's say he works hard and gets paid in NXT), his stake will continue to grow and grow as long as he makes the effort. He may eventually even become a big stakeholder himself. In Bitcoin, the small stakeholder loses 10% of his stake every year, and has to fight an overwhelming uphill battle to get to the top.

So if you truly believe Bitcoin is better distributed (which, it is not: http://nxtcoin.blogspot.com/2014/01/nxt-distribution-infographics.html), if you truly believe that all miners are equal (which it is not, ASIC manufacturers own the scene now), and if you truly think that your Bitcoins aren't losing value over time (which they are, due to inflation caused by mining), then stick to Bitcoin.

Otherwise, why are you concerned with who holds what? Envy? In NXT, at least the small guys don't get screwed over by huge inflation pushing them lower and lower because they can't afford entire ASIC farms (which also assumes you get your ASIC on time, and not after they become worthless). If you work hard, present novel ideas, and get rewarded in NXT, your stake will only grow over time.

I was very late in finding NXT (after it was .00005), but after I saw how the NXT community was so different from anything else I have seen, I sold all my altcoins and bought NXT. Then I became active here and starting selling all my BTC for NXT, buying the dips. I got more and more involved and by liquidating other assets I gradually built up to a halfway respectable amount of NXT. I will never get to 50 million NXT, but with hard work and putting most all my money into NXT (taking a risk) I am up to ~1 million NXT. I guess I am a late early adopter Smiley

If NXT fails, then I will have lost a lot. If NXT succeeds, then I can retire comfortably, hopefully on just the forged income. ALL NXT accounts are averaging about 0.5% per year on their NXT. This is as fair as anything can get in the real world. I am all in, with occasional forays into DOGE when the NXT/DOGE ratio goes to a short term peak.

Now what makes me confident enough in NXT to put all my money into it? It is this community! By adding value in the way that I can, I can influence the future value of NXT. What other investment allows you to get personally involved and help maximize the value of your investment?

If you bought shares in google, do they let you work for them? No. Can you meaningfully change the value of any other top crypto? Doubtful.

I have had direct dealings with almost all the founders and they are all very generous and intelligent people. They were given an unexpected windfall and responsibility and are doing the best they can. Put yourself in their shoes, you know you have all this NXT and you have to distribute it, but you want to be sure it is spent on the right things.

I think most of the super large whale accts are from early adopter investors who are not the founders. Their mindset come from a purely buy low sell high mentality and I think they are not universally of the NXT founder mindset. I appeal to the 50 million+ NXT holders to invest a small percentage into the NXTfund. 100% of the NXTfund will be spent to increase the value of NXT and it will do you more good than just sitting in your acct. Think of it as a cost of doing business. Of course, wait until you are comfortable with what the NXTfund is doing. PM me if you have any specific things you want achieved with your donation. Directed donations are fine.

rickyjames is the treasurer of the NXTfund. I will not pay any of the NXTfund to myself, nor will I even be able to touch the money.

Now that I have been entrusted with 1.525 million NXT all of a sudden I have the responsibility of deciding the best way to allocate it. It is not easy. I am still not even sure which area it is best spent on. It is super important that the funds are spent as effectively as possible.

I want to show the NXT community that the NXTfund will do its best to maximize the value of NXT and to reflect the collective will of the community. As long as there is consensus, then my job is easy. However, if there is no consensus, then I will be forced to decide the exact allocation and if I make everybody equally unhappy then that probably means I am doing a good job.

As you know, I am a believer in marketing, but I am also somewhat technical. I try to see all sides and approach things as a generalist. At the high level I think allocating the NXTfund one third to tech, one third to marketing and one third for tbd is what makes sense. If anybody feels strongly about a different allocation, please post. The tbd is to deal with stuff I can't predict.

On the marketing side, we have all seen the power of making contacts at trade shows. Getting visibility with crypto industry decision makers. Recruiting new NXT community members. These are things that are pretty important. I am hoping that NXTfund will get directed donations for the marketing efforts so we can fully fund attendance at all the relevant trade shows.

On the tech side, there are many new competitors and NXT already has in progress features that match or exceed almost all of them. klee has rightly identified zerocoin functionality as a strategic feature and put 1 million NXT of his to make it happen. I agree with him and as you know I am actively working on that project. What other significant tech features are needed to make NXT have everything it needs? At this point the only significant missing piece I see is a whole set of DAC's to combat etherium.

I am projecting a few months into the future and assuming Asset Exchange clients are released, Account Control is done, etc. If NXT had half a dozen meaningful and significant DAC's running and working, we will be ahead of etherium in real world functionality and installed base, possibly before they officially launch!

If anybody has any other big tech piece that NXT needs in the next 6 months, please post ASAP. What I need help with now is figuring out what the most important DAC's to have are. I am looking for specific proposals for DAC's that will add the most value to NXT. I am still a bit unsure as to what exactly DAC's can do, but from what I can tell, it can do pretty much anything you can imagine. Even non techies can help with daydreaming about the ideal set of DAC's for NXT. Post ideas please!

I hope that Pin can keep track of all the suggested DAC's and if there are more than 5 of them, we can vote to which ones the community wants. I am thinking of 100,000 NXT bounty for each of the top 5 DAC's that are implemented. The sixth DAC is the NXTcash DAC that will be funded from klee's bounty.

Please, the 1.5 million NXT is this community's NXT to spend to maximize the value of NXT. As trustee, I am obligated to listen to this community's desires and reflect the spending accordingly. If you are against 500,000 NXT for the top 5 DAC's please speak up.

Sorry for the long post, I am the anti-CfB when it comes to post length

James
5607  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 07:56:47 PM
And emule gets an answer he cant come back to. Loser him and fc are probs siamese twins or summat.
Nexern definatley said march for an estimated fully working client.
I dont know where emule the homosexual donkey gets his false facts from?

March?  Can we get it earlier?  Is the source code out there?

you dont need him there are two other clients just use them! till the time hé is finished we have moved on to eterum and Emunie and many other.

I'm not familiar what is open source in Nxt and what is not,

Which clients are available for the taking?

What about block explorers,  any available that I can take?

Instant wallets,  does one exist?

How about Android and iOS apps,  any one available?

lol, thanks FC.


Yes "take".  Oh, that's not polite... my apologies .. "borrow".  What can I borrow?
You actually made a useful post or two, thats progress! Then you went back to your old self...
You clearly have a lot of energy and now a lot of NXT, so why not work to make NXT increase in value? It will only help you add to your NXT that you have been "borrowing" from the poor newbies with weak password and your NEX suckers

Just BUILD on NXT and that would add value. You don't need to be a troll anymore now that you have so much NXT in your pockets.

yuriygeorge converted (where are his nice orderbook charts?) maybe you can too?

darkNXT is what I called the NXT that is in an account without any public password. Kind of like dark matter. Only 64 bit protection so you can easily crack the publicly accessible NXT. I think you said you can crack any such acct in a few hours instead of the years it is supposed to take so clearly you are the master cryptographer we need to bow down to.

James
5608  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 07:51:20 PM
is it too late to buy nxt for 100x profit ?  Undecided
Not too late, you will just have to buy and hold for 666 days
5609  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 07:48:19 PM
And emule gets an answer he cant come back to. Loser him and fc are probs siamese twins or summat.
Nexern definatley said march for an estimated fully working client.
I dont know where emule the homosexual donkey gets his false facts from?

https://bitcointalk.org/index.php?topic=412138.0

The "date" listed on that thread is Jan 26



So it does say the 26/1/?? Lol.
But in this main thread we are on nexern himself gave a time line for his work. That stated it would be ready for beta and release for early march.
Maybe there has been a mistake somewhere.

my first goal was to test the client around 26 jan and if everything is working well to release it after these tests.
atm i am testing and since not everything is working as i like this has to fixed before release.  
moreover, i am having 24 coding days on my clock now. some days (not planed) was used for DNA features instead AE.
i know DNA is not most important now but it will pay off later. nxt needs besides a client also usefull showcases to gain
media attention. even if i am mainly a coder i am running my own business a long time to know that these parts are
important too. therefore, i will stop on this topic now and just continue to work. ;-)

ps: emule, please stop over here time by time. i like to have a short break and laugh a little. it just relaxed my neck while sitting in front of my monitors.  Grin

I think DNA will be very useful to implement NXTcash
DNA working with AE and AM
5610  Alternate cryptocurrencies / Announcements (Altcoins) / Re: Nxt marketing & promotion :: Nxt now on Cryptmarket! [articles bounties] on: January 31, 2014, 06:47:17 PM
I've just gotten a friendly webdeveloper interested in creating Nxt payment modules for Wordpress, prestashop and magento (possibly other open source e-commerce systems, too).

He's currently swamped with work, but is going to read up this week and I expect a reaction during next week.



Didnt you contact wesleyh? I thought he had all that.

Pin

Didn't contact him yet, but will do that too today.

The thing is that this guy can deliver complete modules. i don't know if wesley already has those, or just the "how-to" instructions.

I will ask however. In any case, my guy at least can implement it. I would hardly take wes's time from him for that. He is no doubt working on his cross-platform client Smiley

Wesley is about halfway done with the modules to allow websites to accept NXT. They should definitely work together.

There is a 25000 NXT bounty from neer.g to get NXT integrated with websites.
5611  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 07:18:04 AM
Does anybody have experience with JNA or JNI?
We need somebody to make libzerocoin callable from Java and I think JNI allows us to do that.

http://en.wikipedia.org/wiki/Java_Native_Interface

If you can help with this please let me know.

James

I'm still reading about Zerocoin and do not yet understand it fully, so take that into consideration with the following:

You don't necessarily have to use JNI if you intend to have Zerocoin live in AM storage.

Make a stand-alone program linked to libzerocoin that will use JSON (JSON-GLib with libSoup) to talk to the Nxt server.

I am, however, not clear on exactly how one would mint Zerocoin from NXT and transform previously minted Zerocoin back to NXT without a change to the Nxt server.  We can easily destroy NXT that is converted to newly minted Zerocoin by sending the NXT to the genesis account.  We cannot, however, generate new NXT when we want to redeem Zerocoin for NXT.  What might be needed is to change the Nxt server to allow for some sort of global public NXT accumulator to keep track of number of "converted" coins at any given time (account # -1, perhaps?).  But I haven't finished reading about Zerocoin so this might not be needed?  I might not understand how this part is supposed to work yet.  Not sure.

libzercoin also appears to be tailored to the Bitcoin blockchain. 


Just a thought, but couldn't a parallel blockchain be used elusively for mixing purposes? You send your NXT to alt block chain, pay whatever fees, do zerocoin magic, and then your NXT appears in the parallel chain. The NXT in the parallel chain is completely identical to NXT in the main chain, so just do the reverse to get your coins back in the main chain in whatever account you specify. Nodes are encouraged to forge the parallel blockchain from the fees produced by people sending coins in and out of the mixing chain. Side-effect is that this will not bloat the main chain.

I'm not sure of the implications of the security risks though...
The improved zerocash algos create 288 bytes per transaction, so that is 3 transactions in an AM. I think that is small enough that we don't have to worry about bloat. I want to use as much of the existing infrastructure as possible.

I sort of like this approach, it allows the user to optionally use anon or not, since anon will obviously be more expensive

This has been discussed in length regarding BTC and anonymizing the protocol. It has to be everyone or no-one. The non-participators nullify the anonymity of the participators. Half measures are unacceptable. It has to be integrated into the whole network at the most basic level. Half measures are unacceptable. The marginal time/money cost should be considered collateral for the purpose that is serves and will always be open to optimization in the future anyways. Moving money in crypto is already dirt cheap. Adding a marginal cost on top of that at the protocol level for something so important is a trivial consideration.
Are you sure about it having to be an all or nothing? The zerocoin approach seems to get around this. Of course, if there is just one person using it, then it would be pretty easy to figure out who is using it, but if it was an asset in the Asset Exchange, it really would be separate from NXT so not sure why all of NXT needs to be anonymized.

In fact, since zerocoin was designed to be built on top of bitcoin, they clearly did not require all bitcoin users to use zerocoin. Similarily, our plan is to build zerocoin (NXTcash) on top of NXT. If zerocoin on top of bitcoin did not require all of bitcoin to be anonymized, I don't see how zerocoin on top of NXT requires all of NXT to be anonymized.

What am I missing?

James

P.S. zerocoin algos are pretty new, maybe the bitcoin discussions you talk about predate last summer?
5612  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 06:35:01 AM
Separately, would it be possible to get an API call that somehow implements...

I think it's possible.
Great! I knew you could solve this. Please let us know when you have any details on this, I will feel much better about zerocoin port knowing the exact mechanism for this. Maybe it has to do with special account 0?

If all the peers can validate all the spends, then I guess all the account balances update properly and no client needs to get password for any special acct?

Feel free to post a specific API call you could implement. That will give client devs a framework to code against.

Thanks!
5613  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 06:22:15 AM
P.S. Any chance of reserving the NXTcash asset name so all of NXT could use a common sense name for it? Not sure if Asset Names are transferable. does anybody know?

No chance to reserve, but u could offer the highest fee when AE is activated. Asset names r not transferable.
Seems too complicated as we are far from even knowing if we need a robot gateway for this and how will that even be implemented, details, details...

Separately, would it be possible to get an API call that somehow implements:

The client (spender) generates a CoinSpend signature on the transaction that includes the hash of the transaction as well as the Accumulator and PrivateCoin object. The resulting CoinSpend embeds both a coin serial number and a set of zero-knowledge proofs that prove (A) that the spender knows a coin in the transaction set, (B) that the serial number is consistent with the coin, and (C) the spender knows the secret values for the coin. These are all tied to the transaction hash. The client (spender) serializes the CoinSpend object and transmits the completed ZEROCOIN_SPEND transaction to the network.
[from https://github.com/Zerocoin/libzerocoin/wiki/Integrating-with-bitcoin-clients]

The above needs to trigger a NXT payment from some magic acct that previously received NXT. I just can't figure out the logistics of all that.

James
5614  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 06:15:11 AM
Its quiet here, perhaps the calm before the storm. jl777, great job on the zerocoin project, do you think its doable from the code you have?
As long as we get several more people to help, we can get a proof of concept NXTcash testnet (Mar?). It won't be usable for end users, but it will show the zerocoin team we are serious. At that point we will either get direct help from them or early releases of their upcoming zerocash as we would be able to help them debug it. Even if we don't we would have shown we can encapsulate C++ and call it from NXT Java code, so as soon as their zerocash is released in May, we can start porting.

At that point, depending on how it tests out, we might even be able to release it, or we might have to refactor it into 100% Java. Not sure on that point.

Still need to solve a few mysteries, too tired now, but maybe somebody else will find an easy solution. Battling with where and how the redeemed NXTcash gets sent. Will it be an asset in Asset Exchange with a decentralized autonomous gateway? Stuff like that. Suggestions welcomed that's for sure as this is pretty cutting edge stuff I don't think many people have much reference to go by, any idea is potentially a good idea.

https://github.com/Zerocoin/libzerocoin/wiki/Integrating-with-bitcoin-clients is the key info on how to integrate zerocoin onto NXT.

The important thing is that NXTcash will be purely optional and if someone does not want to use it, they wont have to. Converting NXT -> NXTcash will be done locally and take about a minute, that is the longest time with the upcoming zerocash release. Also, anybody using NXTcash will need 7gigs on their HDD, so probably will never work so good on smartphones. Current cost will be 2 NXT and maybe a bit more, not sure until we figure out exact redemption control flow.

Feeling a lot more optimistic about this, even without any help from zerocoin team. We just need help from the key NXT peoples!

NXTcash, the next form of cash!!

James
5615  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 05:34:05 AM
this has to be a record amount of time between comments in this thread
I thought it must have been broken!
If it weren't for my blabber, it would have been over 90 minutes between posts.

wonder why its so quiet. it isnt some sort of holiday or something is it.

chinese new year!
This means 90% of all the regulars are all from China!
5616  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 05:10:21 AM
this has to be a record amount of time between comments in this thread
I thought it must have been broken!
If it weren't for my blabber, it would have been over 90 minutes between posts.
5617  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 04:11:05 AM
libzerocoin v0.11 test utility.

Testing if an RSA modulus can be generated...
   [PASS]
Testing if parameter sizes are correct...
   [PASS]
Testing if group/field parameters can be generated...
   [PASS]
Testing if parameter generation is correct...
   [PASS]
Testing if coins can be minted...
   [PASS]
Testing if the accumulator works...
   [PASS]
Testing if the commitment equality PoK works...
   [PASS]
Testing if a minted coin can be spent...
   [PASS]

Average coin size is 133 bytes.
Serial number size is 32 bytes.
Spend proof size is 23567 bytes.

8 out of 8 tests passed.

OK, so I have verified libzerocoin functions in isolation. No major issues getting it running. Now to encapsulate it so Java can call the libzerocoin.
5618  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 04:06:28 AM
libzerocoin v0.11 tutorial.

Successfully loaded parameters.
Successfully minted a zerocoin.
Deserialized and verified the coin.
Successfully accumulated coins.
Successfully generated a coin spend transaction.
Successfully verified a coin spend transaction.

Coin serial number is:
50670758816621627632275390863152275966382160624109318714908837898946724293259

Installed libzerocoin and generated a test coin Smiley
5619  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 03:45:24 AM
I think one of the top priorities for the NXT guys going to Austin BTC is to try to meet up with some zerocoin folks.
+1
By then we hope to have proof of concept NXTcash.

NXTcash could be in Asset Exchange, so that it will definitely be separate from NXT itself. If you don't want to use NXTcash, there is no reason to do so. Still early days so a lot can change, but there will be some unavoidable fees when using NXTcash, probably 2 transaction fees, possibly more. Not sure.

We might also need a DAC to act as cashier. This could be a really cool proof of concept that shows that all the fancy stuff other coins are talking about could be done on top of NXT.

I hope that after client is released, nexern could help with NXTcash. We need some client changes and might need his DNA. Not sure on the latter.

James

P.S. Any chance of reserving the NXTcash asset name so all of NXT could use a common sense name for it? Not sure if Asset Names are transferable. does anybody know?
5620  Alternate cryptocurrencies / Announcements (Altcoins) / Re: NXT :: descendant of Bitcoin - Updated Information on: January 31, 2014, 02:33:47 AM
Does anybody have experience with JNA or JNI?
We need somebody to make libzerocoin callable from Java and I think JNI allows us to do that.

http://en.wikipedia.org/wiki/Java_Native_Interface

If you can help with this please let me know.

James

I'm still reading about Zerocoin and do not yet understand it fully, so take that into consideration with the following:

You don't necessarily have to use JNI if you intend to have Zerocoin live in AM storage.

Make a stand-alone program linked to libzerocoin that will use JSON (JSON-GLib with libSoup) to talk to the Nxt server.

I am, however, not clear on exactly how one would mint Zerocoin from NXT and transform previously minted Zerocoin back to NXT without a change to the Nxt server.  We can easily destroy NXT that is converted to newly minted Zerocoin by sending the NXT to the genesis account.  We cannot, however, generate new NXT when we want to redeem Zerocoin for NXT.  What might be needed is to change the Nxt server to allow for some sort of global public NXT accumulator to keep track of number of "converted" coins at any given time (account # -1, perhaps?).  But I haven't finished reading about Zerocoin so this might not be needed?  I might not understand how this part is supposed to work yet.  Not sure.

libzercoin also appears to be tailored to the Bitcoin blockchain. 


Just a thought, but couldn't a parallel blockchain be used elusively for mixing purposes? You send your NXT to alt block chain, pay whatever fees, do zerocoin magic, and then your NXT appears in the parallel chain. The NXT in the parallel chain is completely identical to NXT in the main chain, so just do the reverse to get your coins back in the main chain in whatever account you specify. Nodes are encouraged to forge the parallel blockchain from the fees produced by people sending coins in and out of the mixing chain. Side-effect is that this will not bloat the main chain.

I'm not sure of the implications of the security risks though...
The improved zerocash algos create 288 bytes per transaction, so that is 3 transactions in an AM. I think that is small enough that we don't have to worry about bloat. I want to use as much of the existing infrastructure as possible.
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