Topic: NXT :: descendant of Bitcoin - Updated Information - page 1234. (Read 2761626 times)

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

its sort of like the recognition of this problem has caused people to attempt to compensate for it and in so doing they created a situation where its less of a problem in the system where its supposedly a problem than in other systems where its not.

No chance to reserve, but u could offer the highest fee when AE is activated. Asset names r not transferable.

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

It's OK to clone even for u as long as u don't try to scam ppl.

CFB won't kill clones.

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?

i looked it up. a lot of countries celebrate chinese new year, not just china.

This means 90% of all the regulars are all from China!

chinese new year!

+theft

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

First chapters of NxtMyths as infographics:
http://nxtcoin.blogspot.cz/2014/01/nxt-distribution-infographics.html
= multimedia

Best quality:


Good night  

PS: donations, as usual   15003961341330858247

I thought it must have been broken!
If it weren't for my blabber, it would have been over 90 minutes between posts.

this has to be a record amount of time between comments in this thread

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.

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

+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?

Southern Germany  

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.