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381  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][DRK] Darkcoin | First Anonymous Coin | Inventor of X11, DGW, Darksend and InstantX on: March 10, 2015, 04:27:59 PM

Evan, is it correct what your other developers, like Vertoe, say? They claim this was a unilateral decision made without their input and now Vertoe has left the team.

Also, how do you respond to Vertoe leaving? It seems like a mighty setback to the overall project.
Thanks,
JL

Nope. I approached nearly everyone internally and most were for the rebranding. I missed Vertoe, but I already knew what he thought from public comments.
382  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][DRK] Darkcoin | First Anonymous Coin | Inventor of X11, DGW, Darksend and InstantX on: March 10, 2015, 04:15:09 PM
Honestly, I always liked the DRK technology but I never invested in it just because of the name. Anything DARK, I don't want to be associated with it. This morning when I saw a change, I have put 1,5 BTC into it. You have just gotten another person on board.

I don't understand the moaning. Why not have the best of both worlds? Wider adoption that will be associated with the normal name and also underground transaction thanks to its anonymity.

People that want to use anonymous coin will use it no matter if the name is Dark, Dash or Tomato coin.

Just my 2 cents.

+1 Tomato Coin
383  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][DRK] Darkcoin | First Anonymous Coin | Inventor of X11, DGW, Darksend and InstantX on: March 10, 2015, 04:03:58 PM
There seems to be some misunderstanding about the re-branding effort that I would like to clear up.

We've been watching the various conversations pop up about re-branding since the inception of the foundation. When the name "Dash" was recommended by the community, we saw there was a decent amount of support for the name. It also represented what we're attempting to accomplish with Darkcoin, something fast and private as cash. It also sounds very friendly and works as a verb.

After this the foundation started doing some research and found a patent application for the name "Dash". If this patent application was approved it means we couldn't use the name at all. Instead of approaching the community at this point and saying we were thinking about rebranding, we decided to hire a patent attorney to challenge this. We were hoping that we would be able to clear up all of the legal work before approaching the community about the name.

To challenge the patent application required that we purchase the rights to Dashcoin. We need to be able to show prior use of the name "Dash" in order to be able to challenge the application. At this point we could have approached the community with what we were doing and asked the community to fund it, but this would have created a good deal of uncertainty in the market. Instead, I funded the purchase of Dashcoin out of my own pocket, which cost a substantial amount of money. The purpose of this was incase the trademark challenge didn't work, we just would bury the project and leave it be.

If it wasn't for the patent application, this would have been much more transparent. But we were trying to protect the interests of the investors of the coin and not create unnecessary uncertainty.
384  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][DRK] Darkcoin | First Anonymous Coin | Inventor of X11, DGW, Darksend and InstantX on: March 10, 2015, 03:40:59 PM
If the re-branding is going to coincide with a shift away from anonymity I think the DASH dev knows something we don't, perhaps some flaw not yet disclosed to general public was discovered which is so fatal to anonymity that only re-purposing and re-braning the whole project makes sense.

 Absolutely not!!
 
 Evan has been quite open since the beginning that DRK was NEVER created to serve the dark markets and illegal activity. He created Xcoin with X11, and very intelligently changed to a snappier Darkcoin - which made perfect sense at the time

BTC
LTC
DRK

It was the logical progression and a smart name change!!

A year in cryptos is more than dog years. Mt.Gox seems decades ago, but in reality it was just about 1 year ago.

Darkcoin has evolved into something MUCH bigger than its original premise! And the name is holding us down.

Things have changed considerably, and with so much bullshit scamming/silk roads/Ulbrichs/Karpeles/Green a.k.a. Kennedy/Shreems etc etc etc... "dark" is not going to help one bit.

That does NOT MEAN that a name change will change the fundamental "mission statement" made when he created XCoin originally.

+1

There is NO issue with Darksend, in fact the new masternode blinding system is quite impressive. The mission statement will remain the same with the addition that we want to challenge the monopoly that Bitcoin has on the space. I think it's quite unhealthy if it grows to be the only game in town.
385  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][DRK] Darkcoin | First Anonymous Coin | Inventor of X11, DGW, Darksend and InstantX on: March 10, 2015, 08:50:35 AM

Moved to https://darkcointalk.org/threads/rebranding-followup.4266/
386  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][DRK] Darkcoin | First Anonymous Coin | Inventor of X11, DGW, Darksend and InstantX on: March 10, 2015, 08:50:06 AM
Rebranding Followup

https://darkcointalk.org/threads/rebranding-followup.4266/
387  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][DRK] Darkcoin | First Anonymous Coin | Inventor of X11, DGW, Darksend and InstantX on: March 09, 2015, 04:06:23 PM
Rebranding and Scalability:

https://darkcointalk.org/threads/rebranding-and-scalability.4254/
388  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][DRK] Darkcoin | First Anonymous Coin | Inventor of X11, DGW, Darksend and InstantX on: March 08, 2015, 08:54:44 PM
Huge respect to crowning and snogcel for their latest git pull request... I think they must have borrowed Thor's hammer to beat that one into the QT client.  Smiley

It's absolutely beautiful! Great work crowning & snogcel. For anyone wondering what we're talking about: https://github.com/darkcoin/darkcoin/pull/234
389  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][DRK] Darkcoin | First Anonymous Coin | Inventor of X11, DGW, Darksend and InstantX on: March 07, 2015, 06:50:28 PM
I wish there was a way to use it in conjunction with starting masternodes from cold wallets for the ultimate protection.

I agree. Currently the "cold" wallet masternode start requires exposing a 1000DRK private key to an internet connected computer.

With Electrum, it is possible to use a computer with zero internet connectivity to sign transactions with a private key, then go to an online computer with a "private key-less" Electrum to broadcast them.  Once we have Electrum-DRK, it might be easy to implement a masternode start in a similar fashion (and for the extra-paranoid, use a hardware wallet like Trezor on the offline computer).  

Given the frequency of mandatory coldwallet starts and the ever-increasing $/BTC value of those 1000DRK private keys, offline masternode starting/signing (by means of a HW wallet or an offline computer) should be a high priority, IMO.

I agree too. I think this can be an important improvement to the system.

I think Evan posted something like that to be implemented in the next releases. Can you Evan or someone confirm this?  

tnks,

bump

Confirmed. Offline starting of masternodes will be supported.

Thanks alot for the info.

This will be really useful for the community to maintain Masternodes when we are abroad, far away of our beloved cold wallets

I was going to just hack start-many and start-alias to have an option to dump encoded hex with the masternode broadcast. So your cold-wallet could be a non-internet connected computer, you would just boot it up and run "masternode start-many-offline "password", then you would just take the hex dump and paste it into the online computer, like "masternode broadcast-raw encoded-message".

So you'll still need physical access to the box, but it'll be a million times more secure  Smiley
390  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][DRK] Darkcoin | First Anonymous Coin | Inventor of X11, DGW, Darksend and InstantX on: March 07, 2015, 03:31:27 PM
I wish there was a way to use it in conjunction with starting masternodes from cold wallets for the ultimate protection.

I agree. Currently the "cold" wallet masternode start requires exposing a 1000DRK private key to an internet connected computer.

With Electrum, it is possible to use a computer with zero internet connectivity to sign transactions with a private key, then go to an online computer with a "private key-less" Electrum to broadcast them.  Once we have Electrum-DRK, it might be easy to implement a masternode start in a similar fashion (and for the extra-paranoid, use a hardware wallet like Trezor on the offline computer).  

Given the frequency of mandatory coldwallet starts and the ever-increasing $/BTC value of those 1000DRK private keys, offline masternode starting/signing (by means of a HW wallet or an offline computer) should be a high priority, IMO.

I agree too. I think this can be an important improvement to the system.

I think Evan posted something like that to be implemented in the next releases. Can you Evan or someone confirm this?  

tnks,

bump

Confirmed. Offline starting of masternodes will be supported.
391  Alternate cryptocurrencies / Altcoin Discussion / Re: [DRK] Darkcoin is NOT Anonymous? Possible Proof inside. on: March 06, 2015, 04:32:25 PM
Okay, agreed on this.
However, as you have provided the original outputs sent by the clients we see that we at least have the correct order of them.
And the point is that I do not think that it is important to know whether it is 1,2 or 3 people. As long as we have the correct order, all three trails will eventually lead to the originator.

I am pretty sure that a transaction deanonymizer, which does this order reversal, could walk his way all the way back to the transactions where people started to denominating their funds, and get the # of users from the change outputs.


Also, what I just thought, you can surely know which outputs belong together. Its just a little bit of bruteforce work from now on.

As you said, those input belong together:


0   396016fb9d...:19   0.100001   XmEdFdQi99xwqn4SvZ47GQTgGWrwr8wGCj   72:3045...ad81 33:0322...86ef
1   7fdd4b736c...:45   1.00001   Xrw1JYmX2DgQ3GZ6g4EzpqigWrN7PFgmre   71:3044...ac81 33:039e...cee5
2   396016fb9d...:21   0.100001   XhyqpyLSRFWQrP2LuZup5XqZQ7o5qP4jvq   71:3044...8c81 33:0261...21a2
3   aa87251f58...:12   10.0001   Xg9cD2y8UVviaFLst3xESqt1gNPzfHxq25   72:3045...e881 33:02a8...6d95
4   7098889f50...:50   0.100001   XqKzxHmJT1V2p4mUFQVp4tRMoKuiY5ooTU   72:3045...ed81 33:02fe...8220
5   50ce277e21...:35   0.100001   Xged1P2SQ9Ntdb4yFxpiMHmuDCUkFbcwwS   71:3044...f881 33:02bf...eda9
6   b46f161497...:13   0.100001   Xyrz9y6J7633ZMRdsh7r5gY9ZVjQLRr9UL   72:3045...e981 33:023e...07d2
7   4a067e00c7...:59   0.100001   XgVS4zvMm4ikZDtN2DSFgSgrrTrD2w5pq5   71:3044...8081 33:03f3...d69d
8   4a067e00c7...:11   1.00001   XmAEq7k7n2spMATZbN2CpyPT6U4hNiefbr   72:3045...b981 33:03c4...ab69
9   4a067e00c7...:41   1.00001   XmnDvUgBM8kQze5RATyozfkA9bazyWQ1W3   71:3044...2181 33:021a...a289

10   b4534361c8...:23   1.00001   Xmi5ZRQUhV5eBicMYg3kLeVtgUYFtdPuco   72:3045...0381 33:0364...0ed3
11   b4534361c8...:11   0.100001   XvjDt1hjmNeX8Te2BSHMMrx794S3RW2UBh   72:3045...5681 33:03fb...f75f

12   4a067e00c7...:55   1.00001   XvaXzvnWTwHRMfzLricVyxa3FtMqJvohRR   72:3045...8881 33:02b1...33f4
13   4a067e00c7...:20   0.100001   XmHZ4DvHbBLmrHTHWCXYahp4n2SfnxWugt   72:3045...f081 33:02dd...b541



The blocks of the same color are in the correct order.
The only open question is which of the blocks comes first, which second.
For this we have 10*9*8*7*6*5*4*3*2 possibilities,

SO TO CHECK HOW THE OUTPUTS WERE ORDERED IN THE PREVIOUS TRANSACTION
... we have to think.

If the first input in the last transaction had a value of 0.10, only 5 of these blocks are candidates to come first.
... and so on!

It is really easy and in a simple python test most transactions could be uncovered this way.



You should try to build the python deanonymizer. I'd like to see what kind of results you get.
392  Alternate cryptocurrencies / Altcoin Discussion / Re: [DRK] Darkcoin is NOT Anonymous? Possible Proof inside. on: March 06, 2015, 04:23:46 PM
It's possible that 1-3 participants are submitting funds from 4a067e00c76ccb554638c0d14d20e8f501f094ce9093fbf598c358c0835d77e5,
it's impossible to tell otherwise.

Then I just made the impossible possible,
I know that these are exactly 2 people.

When looking at
http://explorer.darkcoin.io/tx/b649ff67a9863a9757049e6d6acc722043030b386d052f75839410f1f32bf3e5

There are exactly two sorted blocks from the 4a06 transaction appearing in the sorted input list of b649ff...  which do not appear directly under each other
They must have been submitted from two different people at two different times.

Code:
7 	4a067e00c7...:59 	0.100001 	XgVS4zvMm4ikZDtN2DSFgSgrrTrD2w5pq5 	71:3044...8081 33:03f3...d69d
8 4a067e00c7...:11 1.00001 XmAEq7k7n2spMATZbN2CpyPT6U4hNiefbr 72:3045...b981 33:03c4...ab69
9 4a067e00c7...:41 1.00001 XmnDvUgBM8kQze5RATyozfkA9bazyWQ1W3 71:3044...2181 33:021a...a289

and

Code:
12 	4a067e00c7...:55 	1.00001 	XvaXzvnWTwHRMfzLricVyxa3FtMqJvohRR 	72:3045...8881 33:02b1...33f4
13 4a067e00c7...:20 0.100001 XmHZ4DvHbBLmrHTHWCXYahp4n2SfnxWugt 72:3045...f081 33:02dd...b541
14 4a067e00c7...:50 1.00001 XbXrsJLGZSeW839LEHQh4K8HS7AvDRXjr6 71:3044...2d81 33:0231...538f
15 4a067e00c7...:7 0.100001 XxdCZkeNWnUzkQfG13greKNXEzzQFwzxx9 72:3045...5681 33:0358...d9ea
16 4a067e00c7...:3 0.100001 XqvRbqBQMtxRdQMpJCCY3qYT62USrZtAqw 72:3045...ef81 33:0271...3602

I think you're misunderstanding the random behavior of the client. It takes multiple transactions and submits them like this. Masternode blinding makes this whole conversation meaningless though, inputs will be random.

Something like this:

(This isn't deanonymizing the TX, I don't know who submitted what, it's just an example)
Client 1:
Code:
0	396016fb9d...:19	0.100001	XmEdFdQi99xwqn4SvZ47GQTgGWrwr8wGCj	72:3045...ad81 33:0322...86ef
1 7fdd4b736c...:45 1.00001 Xrw1JYmX2DgQ3GZ6g4EzpqigWrN7PFgmre 71:3044...ac81 33:039e...cee5
2 396016fb9d...:21 0.100001 XhyqpyLSRFWQrP2LuZup5XqZQ7o5qP4jvq 71:3044...8c81 33:0261...21a2
3 aa87251f58...:12 10.0001 Xg9cD2y8UVviaFLst3xESqt1gNPzfHxq25 72:3045...e881 33:02a8...6d95
4 7098889f50...:50 0.100001 XqKzxHmJT1V2p4mUFQVp4tRMoKuiY5ooTU 72:3045...ed81 33:02fe...8220
5 50ce277e21...:35 0.100001 Xged1P2SQ9Ntdb4yFxpiMHmuDCUkFbcwwS 71:3044...f881 33:02bf...eda9
6 b46f161497...:13 0.100001 Xyrz9y6J7633ZMRdsh7r5gY9ZVjQLRr9UL 72:3045...e981 33:023e...07d2
7 4a067e00c7...:59 0.100001 XgVS4zvMm4ikZDtN2DSFgSgrrTrD2w5pq5 71:3044...8081 33:03f3...d69d
8 4a067e00c7...:11 1.00001 XmAEq7k7n2spMATZbN2CpyPT6U4hNiefbr 72:3045...b981 33:03c4...ab69
9 4a067e00c7...:41 1.00001 XmnDvUgBM8kQze5RATyozfkA9bazyWQ1W3 71:3044...2181 33:021a...a289
10 b4534361c8...:23 1.00001 Xmi5ZRQUhV5eBicMYg3kLeVtgUYFtdPuco 72:3045...0381 33:0364...0ed3
11 b4534361c8...:11 0.100001 XvjDt1hjmNeX8Te2BSHMMrx794S3RW2UBh 72:3045...5681 33:03fb...f75f
12 4a067e00c7...:55 1.00001 XvaXzvnWTwHRMfzLricVyxa3FtMqJvohRR 72:3045...8881 33:02b1...33f4
13 4a067e00c7...:20 0.100001 XmHZ4DvHbBLmrHTHWCXYahp4n2SfnxWugt 72:3045...f081 33:02dd...b541
Client 2
Code:
14	4a067e00c7...:50	1.00001	XbXrsJLGZSeW839LEHQh4K8HS7AvDRXjr6	71:3044...2d81 33:0231...538f
15 4a067e00c7...:7 0.100001 XxdCZkeNWnUzkQfG13greKNXEzzQFwzxx9 72:3045...5681 33:0358...d9ea
16 4a067e00c7...:3 0.100001 XqvRbqBQMtxRdQMpJCCY3qYT62USrZtAqw 72:3045...ef81 33:0271...3602
17 b4534361c8...:30 10.0001 XfKGmCRBgC7ihLjyLhu3yjcvyobZNXof96 71:3044...6281 33:0317...a427
18 e0891c5fbe...:8 0.100001 XjvmB3XF6tfQW4TpZHFmmb5VpSdJfz63VU 71:3044...3881 33:0342...8b7b
19 9d96213345...:22 1.00001 XwUav8pZke2CJCBwZNQJwQVqcsVfLT9J13 71:3044...1981 33:0303...94ca
20 9d96213345...:27 10.0001 XcCvifmjfKvqNSpF83k61QyEosAQaWTRAg 72:3045...d981 33:0206...99ac
Client 3
Code:
21	8410744e1a...:57	0.100001	Xkj7CsXf9umYCTGSXH36UMV15Uyb4bFR1Z	71:3044...b981 33:0357...185e
22 e0891c5fbe...:1 0.100001 XbNQNmpa7ewvXkx6hrZH6bnJd7u5wNxB6S 71:3044...e081 33:020e...afa2
23 8410744e1a...:37 0.100001 XtDvF85gLNht6hKJpTFqgttYLimp3QfTti 71:3044...9381 33:03dc...7413
24 396016fb9d...:49 0.100001 Xs677i24pRnNFDdTXJNdwRiD9Vxx9HqUsb 72:3045...3f81 33:0313...0491
25 e0891c5fbe...:4 1.00001 XvUis97P6tRiWKCwF7cKf2DdsNfhGhEELg 72:3045...2881 33:032d...386c

Example 2:

Client 1:
Code:
0	396016fb9d...:19	0.100001	XmEdFdQi99xwqn4SvZ47GQTgGWrwr8wGCj	72:3045...ad81 33:0322...86ef
1 7fdd4b736c...:45 1.00001 Xrw1JYmX2DgQ3GZ6g4EzpqigWrN7PFgmre 71:3044...ac81 33:039e...cee5
2 396016fb9d...:21 0.100001 XhyqpyLSRFWQrP2LuZup5XqZQ7o5qP4jvq 71:3044...8c81 33:0261...21a2
3 aa87251f58...:12 10.0001 Xg9cD2y8UVviaFLst3xESqt1gNPzfHxq25 72:3045...e881 33:02a8...6d95
4 7098889f50...:50 0.100001 XqKzxHmJT1V2p4mUFQVp4tRMoKuiY5ooTU 72:3045...ed81 33:02fe...8220
5 50ce277e21...:35 0.100001 Xged1P2SQ9Ntdb4yFxpiMHmuDCUkFbcwwS 71:3044...f881 33:02bf...eda9
6 b46f161497...:13 0.100001 Xyrz9y6J7633ZMRdsh7r5gY9ZVjQLRr9UL 72:3045...e981 33:023e...07d2
7 4a067e00c7...:59 0.100001 XgVS4zvMm4ikZDtN2DSFgSgrrTrD2w5pq5 71:3044...8081 33:03f3...d69d
8 4a067e00c7...:11 1.00001 XmAEq7k7n2spMATZbN2CpyPT6U4hNiefbr 72:3045...b981 33:03c4...ab69
Client 2
Code:
9	4a067e00c7...:41	1.00001	XmnDvUgBM8kQze5RATyozfkA9bazyWQ1W3	71:3044...2181 33:021a...a289
10 b4534361c8...:23 1.00001 Xmi5ZRQUhV5eBicMYg3kLeVtgUYFtdPuco 72:3045...0381 33:0364...0ed3
11 b4534361c8...:11 0.100001 XvjDt1hjmNeX8Te2BSHMMrx794S3RW2UBh 72:3045...5681 33:03fb...f75f
12 4a067e00c7...:55 1.00001 XvaXzvnWTwHRMfzLricVyxa3FtMqJvohRR 72:3045...8881 33:02b1...33f4
13 4a067e00c7...:20 0.100001 XmHZ4DvHbBLmrHTHWCXYahp4n2SfnxWugt 72:3045...f081 33:02dd...b541
14 4a067e00c7...:50 1.00001 XbXrsJLGZSeW839LEHQh4K8HS7AvDRXjr6 71:3044...2d81 33:0231...538f
15 4a067e00c7...:7 0.100001 XxdCZkeNWnUzkQfG13greKNXEzzQFwzxx9 72:3045...5681 33:0358...d9ea
16 4a067e00c7...:3 0.100001 XqvRbqBQMtxRdQMpJCCY3qYT62USrZtAqw 72:3045...ef81 33:0271...3602
17 b4534361c8...:30 10.0001 XfKGmCRBgC7ihLjyLhu3yjcvyobZNXof96 71:3044...6281 33:0317...a427
Client 3
Code:
18	e0891c5fbe...:8	0.100001	XjvmB3XF6tfQW4TpZHFmmb5VpSdJfz63VU	71:3044...3881 33:0342...8b7b
19 9d96213345...:22 1.00001 XwUav8pZke2CJCBwZNQJwQVqcsVfLT9J13 71:3044...1981 33:0303...94ca
20 9d96213345...:27 10.0001 XcCvifmjfKvqNSpF83k61QyEosAQaWTRAg 72:3045...d981 33:0206...99ac
21 8410744e1a...:57 0.100001 Xkj7CsXf9umYCTGSXH36UMV15Uyb4bFR1Z 71:3044...b981 33:0357...185e
22 e0891c5fbe...:1 0.100001 XbNQNmpa7ewvXkx6hrZH6bnJd7u5wNxB6S 71:3044...e081 33:020e...afa2
23 8410744e1a...:37 0.100001 XtDvF85gLNht6hKJpTFqgttYLimp3QfTti 71:3044...9381 33:03dc...7413
24 396016fb9d...:49 0.100001 Xs677i24pRnNFDdTXJNdwRiD9Vxx9HqUsb 72:3045...3f81 33:0313...0491
25 e0891c5fbe...:4 1.00001 XvUis97P6tRiWKCwF7cKf2DdsNfhGhEELg 72:3045...2881 33:032d...386c

Example 3:

Client 1:
Code:
0	396016fb9d...:19	0.100001	XmEdFdQi99xwqn4SvZ47GQTgGWrwr8wGCj	72:3045...ad81 33:0322...86ef
1 7fdd4b736c...:45 1.00001 Xrw1JYmX2DgQ3GZ6g4EzpqigWrN7PFgmre 71:3044...ac81 33:039e...cee5
2 396016fb9d...:21 0.100001 XhyqpyLSRFWQrP2LuZup5XqZQ7o5qP4jvq 71:3044...8c81 33:0261...21a2
3 aa87251f58...:12 10.0001 Xg9cD2y8UVviaFLst3xESqt1gNPzfHxq25 72:3045...e881 33:02a8...6d95
Client 2
Code:
4	7098889f50...:50	0.100001	XqKzxHmJT1V2p4mUFQVp4tRMoKuiY5ooTU	72:3045...ed81 33:02fe...8220
5 50ce277e21...:35 0.100001 Xged1P2SQ9Ntdb4yFxpiMHmuDCUkFbcwwS 71:3044...f881 33:02bf...eda9
6 b46f161497...:13 0.100001 Xyrz9y6J7633ZMRdsh7r5gY9ZVjQLRr9UL 72:3045...e981 33:023e...07d2
7 4a067e00c7...:59 0.100001 XgVS4zvMm4ikZDtN2DSFgSgrrTrD2w5pq5 71:3044...8081 33:03f3...d69d
8 4a067e00c7...:11 1.00001 XmAEq7k7n2spMATZbN2CpyPT6U4hNiefbr 72:3045...b981 33:03c4...ab69
9 4a067e00c7...:41 1.00001 XmnDvUgBM8kQze5RATyozfkA9bazyWQ1W3 71:3044...2181 33:021a...a289
10 b4534361c8...:23 1.00001 Xmi5ZRQUhV5eBicMYg3kLeVtgUYFtdPuco 72:3045...0381 33:0364...0ed3
Client 3
Code:
11	b4534361c8...:11	0.100001	XvjDt1hjmNeX8Te2BSHMMrx794S3RW2UBh	72:3045...5681 33:03fb...f75f
12 4a067e00c7...:55 1.00001 XvaXzvnWTwHRMfzLricVyxa3FtMqJvohRR 72:3045...8881 33:02b1...33f4
13 4a067e00c7...:20 0.100001 XmHZ4DvHbBLmrHTHWCXYahp4n2SfnxWugt 72:3045...f081 33:02dd...b541
14 4a067e00c7...:50 1.00001 XbXrsJLGZSeW839LEHQh4K8HS7AvDRXjr6 71:3044...2d81 33:0231...538f
15 4a067e00c7...:7 0.100001 XxdCZkeNWnUzkQfG13greKNXEzzQFwzxx9 72:3045...5681 33:0358...d9ea
16 4a067e00c7...:3 0.100001 XqvRbqBQMtxRdQMpJCCY3qYT62USrZtAqw 72:3045...ef81 33:0271...3602
17 b4534361c8...:30 10.0001 XfKGmCRBgC7ihLjyLhu3yjcvyobZNXof96 71:3044...6281 33:0317...a427
18 e0891c5fbe...:8 0.100001 XjvmB3XF6tfQW4TpZHFmmb5VpSdJfz63VU 71:3044...3881 33:0342...8b7b
19 9d96213345...:22 1.00001 XwUav8pZke2CJCBwZNQJwQVqcsVfLT9J13 71:3044...1981 33:0303...94ca
20 9d96213345...:27 10.0001 XcCvifmjfKvqNSpF83k61QyEosAQaWTRAg 72:3045...d981 33:0206...99ac
21 8410744e1a...:57 0.100001 Xkj7CsXf9umYCTGSXH36UMV15Uyb4bFR1Z 71:3044...b981 33:0357...185e
22 e0891c5fbe...:1 0.100001 XbNQNmpa7ewvXkx6hrZH6bnJd7u5wNxB6S 71:3044...e081 33:020e...afa2
23 8410744e1a...:37 0.100001 XtDvF85gLNht6hKJpTFqgttYLimp3QfTti 71:3044...9381 33:03dc...7413
24 396016fb9d...:49 0.100001 Xs677i24pRnNFDdTXJNdwRiD9Vxx9HqUsb 72:3045...3f81 33:0313...0491
25 e0891c5fbe...:4 1.00001 XvUis97P6tRiWKCwF7cKf2DdsNfhGhEELg 72:3045...2881 33:032d...386c
393  Alternate cryptocurrencies / Altcoin Discussion / Re: [DRK] Darkcoin is NOT Anonymous? Possible Proof inside. on: March 06, 2015, 04:00:49 PM
Notice the inputs reference 5 transactions, but there's 3 participants. You can't tell where one stops and the next begins. Also, it's possible that multiple clients in this transaction were actually in 5bafee7a5397ad505658b1e37af812e64ebb2834601224e4f6f6675b4a25728b or b4534361c8247abcc6b428fd85a17546f23413b2777f3e3f372578d100b20c4e for example.

I do not agree on this actually.

From the transaction 5bafee... for example you can be sure that the inputs belong to one person only, as there is only one change output in the outputs list. (2 people would indicate two change outputs).
Other input transactions can be analyzed the same way.


Those transactions are a bad example of what I was saying.
5bafee7a5397ad505658b1e37af812e64ebb2834601224e4f6f6675b4a25728b and http://explorer.darkcoin.io/tx/b4534361c8247abcc6b428fd85a17546f23413b2777f3e3f372578d100b20c4e aren't mixing rounds at all. It's clients creating darksend compatible inputs.

For example, this transaction http://explorer.darkcoin.io/tx/b649ff67a9863a9757049e6d6acc722043030b386d052f75839410f1f32bf3e5#i16 has 11 source transactions:

http://explorer.darkcoin.io/tx/396016fb9d48cd648cbd46df016614128ca6ff71451548a64ef7cfd1bd6b86df#o19
http://explorer.darkcoin.io/tx/7fdd4b736c9a9a78e5d09bdd5137c87af5d82c20035cbb4cbaf9970ea7f4b129#o45
http://explorer.darkcoin.io/tx/aa87251f58213e5999d56fcd80fc5d4ddab0317af76bcb58751756fc27e05f7a#o12
http://explorer.darkcoin.io/tx/7098889f50598e8e385e8f6108bcffbe4b9284165fb14f3d435c42a6fad50552#o50
http://explorer.darkcoin.io/tx/50ce277e21dda233620163d2818a4998280381c937681d5ca1617ebc4d95ff9b#o35
http://explorer.darkcoin.io/tx/b4534361c8247abcc6b428fd85a17546f23413b2777f3e3f372578d100b20c4e#o11
http://explorer.darkcoin.io/tx/e0891c5fbebb9547cd86858646883fcd2d889c5a1f000b680ea06581a987f9c2#o8
http://explorer.darkcoin.io/tx/8410744e1ab1f7a4e992031cd8f023fb00f65cf8271aecbe3aae0056c034cf99#o57
http://explorer.darkcoin.io/tx/e0891c5fbebb9547cd86858646883fcd2d889c5a1f000b680ea06581a987f9c2#o4

It's possible that 1-3 participants are submitting funds from 4a067e00c76ccb554638c0d14d20e8f501f094ce9093fbf598c358c0835d77e5, it's impossible to tell otherwise.
394  Alternate cryptocurrencies / Altcoin Discussion / Re: [DRK] Darkcoin is NOT Anonymous? Possible Proof inside. on: March 06, 2015, 03:42:14 PM
Interesting approach, although the input order isn't random, it's randomly generated from multiple transactions on the client side. Even if it was completely not random, that doesn't allow you to "jump" the mixing transaction and know which outputs belong to which inputs.

Source TX:

http://explorer.darkcoin.io/tx/9ad01adae3814abf9a9731f0003d95a0f9bf701d055152f7b54ee4b6be47bfca:

Notice the inputs reference 5 transactions, but there's 3 participants. You can't tell where one stops and the next begins. Also, it's possible that multiple clients in this transaction were actually in 5bafee7a5397ad505658b1e37af812e64ebb2834601224e4f6f6675b4a25728b or b4534361c8247abcc6b428fd85a17546f23413b2777f3e3f372578d100b20c4e for example.

http://explorer.darkcoin.io/tx/5bafee7a5397ad505658b1e37af812e64ebb2834601224e4f6f6675b4a25728b#o39
http://explorer.darkcoin.io/tx/b4534361c8247abcc6b428fd85a17546f23413b2777f3e3f372578d100b20c4e#o40
http://explorer.darkcoin.io/tx/1c1769d578f4632971dd699987931cf676a7356196a5b122c60d737fce3c836e#o76
http://explorer.darkcoin.io/tx/7e452c1c5229fbbfdc1b4fc1d8577a6b9d0932bf5f00030d28ec7759dd9273ea#o61
http://explorer.darkcoin.io/tx/3fba31e9cc32cd5e2c002ad4a8bd6908f3a76321e2d892f046265eb14352676e#o60

One more thing to note is that after coins are mixed through multiple sessions, there are "final" outputs that are just spent randomly. That can happen in any session, which causes more randomness. You most definitely can't map those randomly spent outputs to the inputs at all. That's what you should be trying to do, you need to be able to show anonymously spent coins and their original source funds.

Nice try though

PS. If you believe it's really a weakness you need to map the outputs to the inputs and show who's anonymously spending money on what. I'm not sure it's worth the time though, because masternode blinding randomizes the input order anyway.  
395  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][DRK] Darkcoin | First Anonymous Coin | Inventor of X11, DGW, Darksend and InstantX on: March 06, 2015, 12:45:52 AM
I have not get a single payment on one of my nodes since the 1st of feb?
I thought an enforcement cycle lasts 4days at most, anyone facing the same?

Send me your masternode addresses and I'll check it out.
396  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][DRK] Darkcoin | First Anonymous Coin | Inventor of X11, DGW, Darksend and InstantX on: March 05, 2015, 06:31:38 PM
Evan on Testnet: Darksend rounds with MN Blinding are 100x more secure!

https://darkcointalk.org/threads/v0-11-2-x-testing.4202/page-3#post-44576

I knew it was more secure, but that's something else!

How can one say they are 100x more secure now, or 90x? I mean, where is this number coming from?


Probability of following Darksend through
  - 4 non-blinded rounds with 10 masternodes* is (10/2300)^4 == 3.5734577849564574e-10
  - 4 blinded rounds with 10 masternodes is ((10/2300.0)^20)**4 == 1.1528508353537067e-189

Each round uses 20 random masternodes of 2300, so you must control 20 of 2300 four times in a row. It's super secure .

Here's the new probablities for each successive round:
  - 1 rounds with 10 masternodes is ((10/2300.0)^20)^1 == 5.826976675086318e-48
  - 2 rounds with 10 masternodes is ((10/2300.0)^20)^2 == 3.3953657171999996e-95
  - 3 rounds with 10 masternodes is ((10/2300.0)^20)^3 == 1.9784716837512123e-142
  - 4 rounds with 1000 masternodes is ((1000/2300.0)^20)^4 == 1.1528508353537028e-29
* attacker controlled
397  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][DRK] Darkcoin | First Anonymous Coin | Inventor of X11, DGW, Darksend and InstantX on: March 04, 2015, 06:33:24 PM
*************** 11.2.0 - Testing *************************

Come help test 11.2.0!

https://darkcointalk.org/threads/v0-11-2-x-testing.4202/
398  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][DRK] Darkcoin | First Anonymous Coin | Inventor of X11, DGW, Darksend and InstantX on: March 03, 2015, 09:14:48 PM
Masternode blinding is working   Grin

It's super fast, secure and should reduce mixing time by 80%+

https://github.com/darkcoin/darkcoin/commits/masternode-blinding
399  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][DRK] Darkcoin | First Anonymous Coin | Inventor of X11, DGW, Darksend and InstantX on: March 03, 2015, 02:41:39 PM
Is everything ok with enforcement?
I have just built a new masternode and it immediately received a payment of 2.60072 DRK (around 3 hours since the start)

Everything seems to be working great, did you fund the masternode more than a few days ago?
400  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][DRK] Darkcoin | First Anonymous Coin | Inventor of X11, DGW, Darksend and InstantX on: March 02, 2015, 07:48:11 PM

http://www.ecb.europa.eu/pub/pdf/other/virtualcurrencyschemesen.pdf

"Different algorithms, i.e. the mathematical procedure for calculating and processing data
(it determines the speed at which the next “block” – set of transactions – is generated, how coins
are released, etc.).13 Despite being a very changeable attribute, two major algorithms can currently
be identified: SHA-256 (e.g. Bitcoin, Peercoin, Namecoin, Mastercoin) and Scrypt (e.g. Litecoin,
Dogecoin, Auroracoin), which could be described as an extension of the SHA-256 algorithm but
requiring more physical memory. In contrast to the former, for which specialised equipment for
“mining” was developed, deployed and therefore also needed to still be successful as “miner”, the
latter allowed “miners” to perform their activities with regular hardware. Currently, efforts are put
into using the X11 algorithm for reasons of higher cryptographic security and lower processing
costs, so it is quite possible that the algorithms mentioned above will be replaced shortly.  "

Apparently X11 is going to replace SHA-256 and Scrypt  Grin
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