[ANN][DASH] Dash (dash.org) | First Self-Funding Self-Governing Crypto Currency

[cannonfodder]

I've tried everything, but my 7950s won't cooperate. The 7850 in my desktop, which is the one I usually have issues with, is happily mining along.

Hmm.. can't understand what it may be about... what cmd line are you using right now?

I've run without any arguments, I've used --thread-concurrency 8192 -g 2 -w 256 --lookup-gap 2, I've changed the g to 1, w to 128, TC from 1792 up to ~24000. I don't think there's much I haven't tried.

The cards mine scrypt, kekkak, scrypt-jane, scrypt n, etc. etc. just fine. Not working with this whatsoever. 

[Lebubar]

Hello,

I've got a question for buying BTC.
As I think it's low, I was thinking in buying BTC with $.

But what I saw in coinbase : Bank Accounts Used to buy and sell bitcoins — U.S. only
Can't use visa credit card there?

I already try the VirWox.. They closed/banned my account directly because I was suspicious lol.. They never told me why, the country?

What? For information I'm French living in Mexico.

How can I do to buy BTC with fiat? I never did it, always haing BTC by mining other coin....

If you do have credit card, i can refer a good merchant.

Yes I have... More than one. also paypal...

[AlexGR]

I've tried everything, but my 7950s won't cooperate. The 7850 in my desktop, which is the one I usually have issues with, is happily mining along.

Hmm.. can't understand what it may be about... what cmd line are you using right now?

I've run without any arguments, I've used --thread-concurrency 8192 -g 2 -w 256 --lookup-gap 2, I've changed the g to 1, w to 128, TC from 1792 up to ~24000. I don't think there's much I haven't tried.

The cards mine scrypt, kekkak, scrypt-jane, scrypt n, etc. etc. just fine. Not working with this whatsoever.  

Ok a few far fetched tries:

-try setting the shader count in case it is misdetecting them (?) with --shaders XXXX (numbers of shaders on your card)

-try tc value of 1, then 2, then 4, 8, 16, 32 etc (I know it sounds funny but try it),

-reduce intensity from 13 to something less.

-try one gpu at a time

-delete the .bin files

[fusecavator]

Other ideas?

I’m open to ideas on how to provide the best security to the network. I would love to hear what people have in mind.

How about adding an option for adding decoy transactions?

Sometimes coinjoins can be picked apart just by looking at what adds up. This was painfully obvious on the darksend testnet the other day, as I remember seeing darksend transactions like Inputs: 500, 5 Outputs: 400, 100, 4, 1 where there's only one possible solution of who sent what.

One could easily construct decoy transactions to specifically add up to the amounts of the legit transaction. For example:
Intended transaction:
Input: 100
Output: 20, 80(change)
Decoy transaction:
Input: 500
Output: 10, 90, 50, 50, 35, 65, 95, 5, 100(all sent to change addresses)

If that decoy transaction is coinjoined with the intended transaction, there becomes 5 extra possibilities of where the 100 was sent to even if no transactions by others help mask it

Also, use more inputs than necessary, and use several change addresses instead of just one to help mask the intentions, and also having more and smaller outputs causes it to be more likely that they can be useful to help mask other transactions joined with them.

[eduffield]

Other ideas?

I’m open to ideas on how to provide the best security to the network. I would love to hear what people have in mind.

How about adding an option for adding decoy transactions?

Sometimes coinjoins can be picked apart just by looking at what adds up. This was painfully obvious on the darksend testnet the other day, as I remember seeing darksend transactions like Inputs: 500, 5 Outputs: 400, 100, 4, 1 where there's only one possible solution of who sent what.

One could easily construct decoy transactions to specifically add up to the amounts of the legit transaction. For example:
Intended transaction:
Input: 100
Output: 20, 80(change)
Decoy transaction:
Input: 500
Output: 10, 90, 50, 50, 35, 65, 95, 5, 100(all sent to change addresses)

If that decoy transaction is coinjoined with the intended transaction, there becomes 5 extra possibilities of where the 100 was sent to even if no transactions by others help mask it

Also, use more inputs than necessary, and use several change addresses instead of just one to help mask the intentions, and also having more and smaller outputs causes it to be more likely that they can be useful to help mask other transactions joined with them.

The testing we did was just a test of the transaction pooling and remote signing of inputs, not a test of anonymity (good eye though checking that out). One of the next tests we should have that working.

Here’s the plan for anonymizing amounts if anyone is interested:

DarkSend anonymizes unique amounts like 15.15 by using “denominations” of currency in the different transaction pools available. These denominations come in the amounts of 5000, 1000, 500, 100, 50, 20, 5, 1, .50, .25, .10, .05, and .01. For example a payment of 15.15 would be broken down and submitted to the following transaction pools:

Submit payment for 10DRK to addr Xyz using pool 10  (in pool 10 ALL outputs are for 10DRK)
Submit payment for 5DRK to addr Xyz   using pool 5     (in pool 5 ALL outputs are for 5DRK)
Submit payment for 0.10DRK to addr Xyz   using pool .10
Submit payment for 0.05DRK to addr Xyz   using pool .05

The four payments total 15.15, just like paying in cash, except you have no idea who paid you.

Users receiving anonymous payments will then receive separate out of order payments for various amounts adding up to the total amount they were intending on receiving.  

With this methodology, payments could be as granular as 0.01, this could be changed in the future if the currency becomes more valuable by adding smaller denominations.  

[cannonfodder]

Ok a few far fetched tries:

-try setting the shader count in case it is misdetecting them (?) with --shaders XXXX (numbers of shaders on your card)

-try tc value of 1, then 2, then 4, 8, 16, 32 etc (I know it sounds funny but try it),

-reduce intensity from 13 to something less.

-try one gpu at a time

-delete the .bin files

.bin files have been getting deleted each time I try something new. Ran with just the shaders option (1792) and intensity 8 (giving only 50kh/s), lowered tc to 1......nothing works for whatever reason. Redownloaded the miner and started from scratch. Copied the miner from my working computer, still nothing but hw errors.

[phm]

Thanks but I've already have DRK. (and don't want to sell one!!)
I'm searching BTC at the price of coinbase : Buy Price $575.03   Sell Price $571
I can go 585 for one.

How about bitcurex.com? It's a Polish exchange, but they also have BTC/EUR market. I sold a dozen of BTC there, everything without problems. They don't have any complicated identity verification procedures, at least they didn't when I registered.

[Chris180Z]

Is this SHA? Difficulty is 309. If this is scrypt then that is crazy!

[phm]

Anyone can help with mining on 7950s?

My 7850 in my desktop can mine no problem using it's standard values used for scrypt mining, but the 7950s only return HW errors. I've been trying for two days. I've tried no parameters at all in the BAT file, multiple TCs and multiple values of every other variable imaginable. I've also tried underclocking, limiting it to just one GPU to see if I could get something working, upgrading drivers, downgrading drivers, etc. etc. Am I missing something? If someone can help, I'll tip you something. Probably in LTC since I don't have any DRK. Feel free to PM me if you'd like.

This is very strange. Did you try the new miner posted there: https://bitcointalk.org/index.php?topic=475795.0 ? Remember to add -k darkcoin with this one.

[TanteStefana]

Other ideas?

I’m open to ideas on how to provide the best security to the network. I would love to hear what people have in mind.

How about adding an option for adding decoy transactions?

Sometimes coinjoins can be picked apart just by looking at what adds up. This was painfully obvious on the darksend testnet the other day, as I remember seeing darksend transactions like Inputs: 500, 5 Outputs: 400, 100, 4, 1 where there's only one possible solution of who sent what.

One could easily construct decoy transactions to specifically add up to the amounts of the legit transaction. For example:
Intended transaction:
Input: 100
Output: 20, 80(change)
Decoy transaction:
Input: 500
Output: 10, 90, 50, 50, 35, 65, 95, 5, 100(all sent to change addresses)

If that decoy transaction is coinjoined with the intended transaction, there becomes 5 extra possibilities of where the 100 was sent to even if no transactions by others help mask it

Also, use more inputs than necessary, and use several change addresses instead of just one to help mask the intentions, and also having more and smaller outputs causes it to be more likely that they can be useful to help mask other transactions joined with them.

The testing we did was just a test of the transaction pooling and remote signing of inputs, not a test of anonymity (good eye though checking that out). One of the next tests we should have that working.

Here’s the plan for anonymizing amounts if anyone is interested:

DarkSend anonymizes unique amounts like 15.15 by using “denominations” of currency in the different transaction pools available. These denominations come in the amounts of 5000, 1000, 500, 100, 50, 20, 5, 1, .50, .25, .10, .05, and .01. For example a payment of 15.15 would be broken down and submitted to the following transaction pools:

Submit payment for 10DRK to addr Xyz using pool 10  (in pool 10 ALL outputs are for 10DRK)
Submit payment for 5DRK to addr Xyz   using pool 5     (in pool 5 ALL outputs are for 5DRK)
Submit payment for 0.10DRK to addr Xyz   using pool .10
Submit payment for 0.05DRK to addr Xyz   using pool .05

The four payments total 15.15, just like paying in cash, except you have no idea who paid you.

Users receiving anonymous payments will then receive separate out of order payments for various amounts adding up to the total amount they were intending on receiving.  

With this methodology, payments could be as granular as 0.01, this could be changed in the future if the currency becomes more valuable by adding smaller denominations.  

If you leave the smaller units out, and they are used all the time, won't that be a weak link from which you can figure out where the transactions came from?

[tabnk]

DRK COIN to brighten our LIFE.

A DARKCOIN Charity Foundation for needy children.  

DONATION ADDRESS (DRK): XifqN6SNh4JngM9MqYbS1e77tAmoerQSaE

http://explorer.darkcoin.io/address/XifqN6SNh4JngM9MqYbS1e77tAmoerQSaE

[alphacenturion]

Hmm.
What normal hashrate for 280x, 270x and 7850?
On 280x i have 1.8mh
270x - 1.176mh
7850 - 1.050mh

Its normal?

on my 280x i get 2.18 mhash

Care to share your conf settings? Im running at approx 1800 khash per r9 280x

[AlexGR]

DRK COIN to brighten our LIFE.

A DARKCOIN Charity Foundation for needy children.  

DONATION ADDRESS (DRK): XifqN6SNh4JngM9MqYbS1e77tAmoerQSaE

Is this approved by anyone? 

[Lebubar]

Thanks but I've already have DRK. (and don't want to sell one!!)
I'm searching BTC at the price of coinbase : Buy Price $575.03   Sell Price $571
I can go 585 for one.

How about bitcurex.com? It's a Polish exchange, but they also have BTC/EUR market. I sold a dozen of BTC there, everything without problems. They don't have any complicated identity verification procedures, at least they didn't when I registered.

Thanks, I'll try.
Was looking localbitcoins, for the moment did nt find something interesenting..

[eduffield]

Other ideas?

I’m open to ideas on how to provide the best security to the network. I would love to hear what people have in mind.

How about adding an option for adding decoy transactions?

Sometimes coinjoins can be picked apart just by looking at what adds up. This was painfully obvious on the darksend testnet the other day, as I remember seeing darksend transactions like Inputs: 500, 5 Outputs: 400, 100, 4, 1 where there's only one possible solution of who sent what.

One could easily construct decoy transactions to specifically add up to the amounts of the legit transaction. For example:
Intended transaction:
Input: 100
Output: 20, 80(change)
Decoy transaction:
Input: 500
Output: 10, 90, 50, 50, 35, 65, 95, 5, 100(all sent to change addresses)

If that decoy transaction is coinjoined with the intended transaction, there becomes 5 extra possibilities of where the 100 was sent to even if no transactions by others help mask it

Also, use more inputs than necessary, and use several change addresses instead of just one to help mask the intentions, and also having more and smaller outputs causes it to be more likely that they can be useful to help mask other transactions joined with them.

The testing we did was just a test of the transaction pooling and remote signing of inputs, not a test of anonymity (good eye though checking that out). One of the next tests we should have that working.

Here’s the plan for anonymizing amounts if anyone is interested:

DarkSend anonymizes unique amounts like 15.15 by using “denominations” of currency in the different transaction pools available. These denominations come in the amounts of 5000, 1000, 500, 100, 50, 20, 5, 1, .50, .25, .10, .05, and .01. For example a payment of 15.15 would be broken down and submitted to the following transaction pools:

Submit payment for 10DRK to addr Xyz using pool 10  (in pool 10 ALL outputs are for 10DRK)
Submit payment for 5DRK to addr Xyz   using pool 5     (in pool 5 ALL outputs are for 5DRK)
Submit payment for 0.10DRK to addr Xyz   using pool .10
Submit payment for 0.05DRK to addr Xyz   using pool .05

The four payments total 15.15, just like paying in cash, except you have no idea who paid you.

Users receiving anonymous payments will then receive separate out of order payments for various amounts adding up to the total amount they were intending on receiving.  

With this methodology, payments could be as granular as 0.01, this could be changed in the future if the currency becomes more valuable by adding smaller denominations.  

If you leave the smaller units out, and they are used all the time, won't that be a weak link from which you can figure out where the transactions came from?

Nope, for example if you sent 30DRK, you would use 2 of the pools. Pool 10 and Pool 20, the transactions then look like this:

Users 1,2,3,4,5 send 10DRK to users A,B,C,D,E
Users 1,2,3,4,5 send 20DRK to users A,B,C,D,E

It just requires the network to process 4 of each of the 10/20 denominations to anonymize them.

[TanteStefana]

I meant transactions like 10.25636012 what happens to the .00636012 if you're only going down to two decimal places, and won't that make the .00636012 easy to track?

[cannonfodder]

Anyone can help with mining on 7950s?

My 7850 in my desktop can mine no problem using it's standard values used for scrypt mining, but the 7950s only return HW errors. I've been trying for two days. I've tried no parameters at all in the BAT file, multiple TCs and multiple values of every other variable imaginable. I've also tried underclocking, limiting it to just one GPU to see if I could get something working, upgrading drivers, downgrading drivers, etc. etc. Am I missing something? If someone can help, I'll tip you something. Probably in LTC since I don't have any DRK. Feel free to PM me if you'd like.

This is very strange. Did you try the new miner posted there: https://bitcointalk.org/index.php?topic=475795.0 ? Remember to add -k darkcoin with this one.

Same results with the original and updated miner.

[montecristo83]

Very interesting coin! Been skimming through this topic and decided to throw some hash power at it. Sure, it's not the most profitable coin to mine atm - but that's not why I'm here.

Hmm.
What normal hashrate for 280x, 270x and 7850?
On 280x i have 1.8mh
270x - 1.176mh
7850 - 1.050mh

Its normal?

on my 280x i get 2.18 mhash

Care to share your conf settings? Im running at approx 1800 khash per r9 280x

I've experimented with 3 different 280X' and some older GPUs using the latest GPU miner.

280X:
ASUS DC2T (1160/1750): 2.4MH/s
Gigabyte Windforce 3X (1100/1500): 2.29MH/s
Sapphire Dual-X OC (1100/1500): 2.16MH/s

Fans at 60% = 60C-64C in a 29C ambient room

Code:

-g 2 -w 256 --thread-concurrency 8192 --shaders 2048 --lookup-gap 2

No intensity setting apparently means dynamic intensity of 13-14

Older GPUs:
MSI R6970 Twin Frozr III (940/1350): 1.57MH/s
ASUS DC2 HD6950 (810/1250): 1.41MH/s   <<<--- flashed to 6970
ASUS DC2 HD6950 (810/1250): 1.32MH/s   <<<--- this donk doesn't want to get flashed

Code:

-I 18 -g 1 -w 256 --gpu-fan 60,50,50 --lookup-gap 2 --thread-concurrency 8000,8000,8192 --shaders 1536,1536,1408

Fans at 60%/50%/50% = 64C-70C in a 29C ambient room

[badman74]

Anyone can help with mining on 7950s?

My 7850 in my desktop can mine no problem using it's standard values used for scrypt mining, but the 7950s only return HW errors. I've been trying for two days. I've tried no parameters at all in the BAT file, multiple TCs and multiple values of every other variable imaginable. I've also tried underclocking, limiting it to just one GPU to see if I could get something working, upgrading drivers, downgrading drivers, etc. etc. Am I missing something? If someone can help, I'll tip you something. Probably in LTC since I don't have any DRK. Feel free to PM me if you'd like.

This is very strange. Did you try the new miner posted there: https://bitcointalk.org/index.php?topic=475795.0 ? Remember to add -k darkcoin with this one.

Same results with the original and updated miner.

someone else was having this problem due to running 6 cards on the same board
he modded one of the catalyst drivers to fix it
check the phm-sgminer thread for details

[tabnk]

I'm approved !!!  . Founding FATHER  

DRK COIN to brighten our LIFE.

A DARKCOIN Charity Foundation for needy children.  

DONATION ADDRESS (DRK): XifqN6SNh4JngM9MqYbS1e77tAmoerQSaE

Is this approved by anyone?