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Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 ) singapore
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Author Topic: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )  (Read 22681 times)

madawc

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #80 on: January 10, 2016, 02:58:44 pm »

Can somebody send the needed NXT TESTNET amount for shuffling test to this address?

NXT-JL3E-P2LB-JGXA-2TL4B
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Riker

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #81 on: January 10, 2016, 03:29:16 pm »

Can somebody send the needed NXT TESTNET amount for shuffling test to this address?

NXT-JL3E-P2LB-JGXA-2TL4B

5000 sent. I think you'll need to issue one outgoing transaction from this account in order to secure it with a public key before you can participate in shuffling.
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MrCluster87

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #82 on: January 10, 2016, 04:02:42 pm »

Hey reposting my testing for sunday 10/01/2016:

NXT-CRPE-VQ5C-BEP9-A9UA3 tx ID: 4481834241760927452

nrs log:

2016-01-10 16:55:29 FINE: Forger 9269331474830941868 deadline 500633 hit 67647524 started
2016-01-10 16:58:12 FINE: Forger 9269331474830941868 deadline 508250 hit 67655288 is already forging
2016-01-10 16:58:39 FINE: Account 9269331474830941868 registering for shuffling 2124423094059631953
2016-01-10 16:58:39 FINE: Accepted new transaction 4481834241760927452
2016-01-10 16:58:39 INFO: Started shuffler for account 9269331474830941868, shuffling 2124423094059631953
2016-01-10 16:58:58 FINE: Shuffling 2124423094059631953 entered stage PROCESSING, assignee 5652097202546745855, remaining blocks 10
2016-01-10 17:01:48 FINE: Shuffling participant 5652097202546745855 changed state to PROCESSED
2016-01-10 17:04:46 FINE: Shuffling participant 11274269400387066343 changed state to PROCESSED
2016-01-10 17:04:46 FINE: Average database transaction time is 0.010 seconds
2016-01-10 17:05:31 FINE: Shuffling participant 11580081983047651163 changed state to PROCESSED
2016-01-10 17:12:59 FINE: Participant 4746332744157016036 did not submit processing
2016-01-10 17:12:59 FINE: Shuffling penalty 1.750000 NXT awarded to forger at height 534355
2016-01-10 17:12:59 FINE: Shuffling penalty 1.750000 NXT awarded to forger at height 534354
2016-01-10 17:12:59 FINE: Shuffling penalty 1.750000 NXT awarded to forger at height 534353
2016-01-10 17:12:59 FINE: Shuffling penalty 1.750000 NXT awarded to forger at height 534356
2016-01-10 17:12:59 FINE: Shuffling 2124423094059631953 entered stage CANCELLED, assignee 4746332744157016036, remaining blocks 0
2016-01-10 17:12:59 FINE: Shuffling 2124423094059631953 was cancelled, blaming account 4746332744157016036

So, basically the 1.000 NXT returned to the account...but even if the transaction didn't went through I cannot re-use the previous new account (NXT-XS5Z-HTGC-3PVY-H45F5).  That's quite annoying...every-time creating a brand new account...

tx ID: 4245768122586685791

2016-01-10 17:58:28 FINE: Shuffling 14337746518512921017 entered stage PROCESSING, assignee 16936981465227549021, remaining blocks 10
2016-01-10 18:00:57 FINE: Shuffling participant 16936981465227549021 changed state to PROCESSED
2016-01-10 18:03:18 FINE: Shuffling participant 11580081983047651163 changed state to PROCESSED
2016-01-10 18:05:09 FINE: Shuffling participant 11274269400387066343 changed state to PROCESSED
2016-01-10 18:05:09 FINE: Account 9269331474830941868 processing shuffling 14337746518512921017
2016-01-10 18:05:09 FINE: Will broadcast new transaction later 16530277300287744564
2016-01-10 18:06:10 FINE: Shuffling participant 9269331474830941868 changed state to PROCESSED
2016-01-10 18:07:04 FINE: Shuffling participant 5652097202546745855 changed state to PROCESSED
2016-01-10 18:07:04 FINE: Shuffling participant 5652097202546745855 changed state to VERIFIED
2016-01-10 18:07:04 FINE: Shuffling 14337746518512921017 entered stage VERIFICATION, assignee 0, remaining blocks 15
2016-01-10 18:07:04 FINE: Account 9269331474830941868 verifying shuffling 14337746518512921017
2016-01-10 18:07:04 FINE: Will broadcast new transaction later 9624570247287340177
2016-01-10 18:09:09 FINE: Shuffling participant 11274269400387066343 changed state to VERIFIED
2016-01-10 18:09:09 FINE: Shuffling participant 16936981465227549021 changed state to VERIFIED
2016-01-10 18:09:09 FINE: Shuffling participant 9269331474830941868 changed state to VERIFIED
2016-01-10 18:09:09 FINE: Shuffling participant 11580081983047651163 changed state to VERIFIED
2016-01-10 18:09:09 FINE: Shuffling 14337746518512921017 entered stage DONE, assignee 0, remaining blocks 0
2016-01-10 18:09:09 FINE: Shuffling 14337746518512921017 was distributed
« Last Edit: January 10, 2016, 05:10:25 pm by MrCluster87 »
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PoofKnuckle

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #83 on: January 10, 2016, 05:42:57 pm »

That bit is annoying. Other than that, my shuffling worked out fine today.

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Riker

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #84 on: January 10, 2016, 06:36:33 pm »

So, basically the 1.000 NXT returned to the account...but even if the transaction didn't went through I cannot re-use the previous new account (NXT-XS5Z-HTGC-3PVY-H45F5).  That's quite annoying...every-time creating a brand new account...

I think it's because the shuffler is left running for 720 blocks after the shuffling is cancelled just in case there is a re-org.
If you'll wait 720 blocks or restart your node, you should be able to reuse the account.
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EvilDave

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #85 on: January 11, 2016, 09:45:27 pm »

Thanks to everyone who participated in the second Shuffling Sunday.....much appreciated.
Looks like we got some useful testing done, but there are no reports of any interesting bugs/exploits, sadly.

I'm wondering if we should run another ShuffSun on the 17th, or leave it at this ?
Does anyone have any good ideas on implementing a CoinShuffle exploit ?
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PoofKnuckle

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #86 on: January 17, 2016, 11:37:08 am »

So... we shuffling today?

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EvilDave

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #87 on: January 17, 2016, 12:15:34 pm »

So, far all of our shuffling testing has produced a lot of useful feedback, but no serious issues.
Everything seems to work as intended...... ;D, and no-one has come up with  any ideas for an exploit (or at least not an economically viable one)

I'm going to set up a few shuffles anyway, see if anyone comes up with an idea.....
 
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EvilDave

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #88 on: January 17, 2016, 12:52:44 pm »

Quick NRS improvement suggestion: for asset/currency shufflings, it would be very useful to have a drop down list box allowing users to directly choose from the assets/currencies that they hold, instead of having to hunt around for asset IDs. There is already a lot of information to be entered into the shuffling creation interface, this would make the process a little bit easier.
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PoofKnuckle

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #89 on: January 17, 2016, 01:23:22 pm »

So, I have shuffled NXT and also assets. When I go to the account I sent the NXT to, it appears to have a balance with no history... I mean, it is an account that has a balance that is a shuffling distribution, but that's it. There is no way to reconstruct where the NXT came from? I am just trying to wrap my head around how shuffling provides anonymity.

Thanks!

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mystcoin

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #90 on: January 17, 2016, 01:44:18 pm »

I can't participate in the SHUFF shuffle because there are no offers to exchange SHUFF for NXT.
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coretechs

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #91 on: January 17, 2016, 05:05:34 pm »

So, I have shuffled NXT and also assets. When I go to the account I sent the NXT to, it appears to have a balance with no history... I mean, it is an account that has a balance that is a shuffling distribution, but that's it. There is no way to reconstruct where the NXT came from? I am just trying to wrap my head around how shuffling provides anonymity.

Thanks!

It can be reconstructed based on the times that the shuffling occurred and who participated in the shuffling.  As shuffled coins are spent/de-anonymized, the privacy of the other participants is reduced.  However, since you can participate in any number of subsequent shufflings you should be able to achieve a reasonable level of anonymity/privacy, especially if shufflings are a constantly active with many participants.
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Riker

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #92 on: January 17, 2016, 05:23:17 pm »

So, I have shuffled NXT and also assets. When I go to the account I sent the NXT to, it appears to have a balance with no history... I mean, it is an account that has a balance that is a shuffling distribution, but that's it. There is no way to reconstruct where the NXT came from? I am just trying to wrap my head around how shuffling provides anonymity.

Thanks!

Hope I understand your question. The idea is that you receive some funds that you don't want other people to track, for example salary, supplier invoices, birthday presents comes to mind. The problem is that these transactions are written forever in the blockchain so if anyone ever finds your account address, for example when you pay for coffee at the cafeteria, then they can reconstruct your payment history and see that every month you get X nxt and deduce it's your salary or that you sent a transaction around the time of your wife's birthday and deduce how much you paid for her present. If instead you provide your employer every month a fresh new account address or several of them and your employer creates a shuffling when paying you, it would be much more difficult to deduce your salary in the future since it would be dispersed over many un-linkable accounts.
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PoofKnuckle

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #93 on: January 17, 2016, 06:24:16 pm »

Hope I understand your question. The idea is that you receive some funds that you don't want other people to track, for example salary, supplier invoices, birthday presents comes to mind. The problem is that these transactions are written forever in the blockchain so if anyone ever finds your account address, for example when you pay for coffee at the cafeteria, then they can reconstruct your payment history and see that every month you get X nxt and deduce it's your salary or that you sent a transaction around the time of your wife's birthday and deduce how much you paid for her present. If instead you provide your employer every month a fresh new account address or several of them and your employer creates a shuffling when paying you, it would be much more difficult to deduce your salary in the future since it would be dispersed over many un-linkable accounts.

Yes, that gets at what I was asking, which is, are the shuffled NXT un-linkable to any other accounts? It seems to me this should be a huge coup for NXT. BTC has mixers, but are there any coins that have this built-in?

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EvilDave

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #94 on: January 30, 2016, 11:32:33 am »

Just to wrap this topic/thread up: thanks very much to all the people who helped out with Coin Shuffle testing on TestNet.
If any of the testers from the last 2 Shuffling Sundays (10 + 17 Jan) would like to see some bounty: send me a screenshot of your shuffles from those 2 days, please.

As an example:




Moving on.....I'd like to propose that we carry on with the Shuffling Sunday tradition on MainNet.
AS there are not all that many Shuffles active at any one moment: let's co-ordinate Shuffling activity to take place on each Sunday

This will give people a much better chance of finding an active Shuffle to join, and will give the devs a chance to do some more advanced testing / data gathering on CoinShuffle functionality.
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PoofKnuckle

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #95 on: January 30, 2016, 01:03:06 pm »


Moving on.....I'd like to propose that we carry on with the Shuffling Sunday tradition on MainNet.
AS there are not all that many Shuffles active at any one moment: let's co-ordinate Shuffling activity to take place on each Sunday

This will give people a much better chance of finding an active Shuffle to join, and will give the devs a chance to do some more advanced testing / data gathering on CoinShuffle functionality.

I like this idea! I am up for it :)

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apenzl

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Re: Shuffling Sunday ! (testing NRS 1.7.4 CoinShuffle, 10+17-01-2016 )
« Reply #96 on: February 02, 2016, 11:12:12 am »


Moving on.....I'd like to propose that we carry on with the Shuffling Sunday tradition on MainNet.
AS there are not all that many Shuffles active at any one moment: let's co-ordinate Shuffling activity to take place on each Sunday

This will give people a much better chance of finding an active Shuffle to join, and will give the devs a chance to do some more advanced testing / data gathering on CoinShuffle functionality.

I like this idea! I am up for it :)

Agreed, great initiative.

+ https://www.mynxt.info/shuffles/
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