★★DigiByte|极特币★★[DGB]✔ Core v6.16.5.1 - DigiShield, DigiSpeed, Segwit

[DigiByte]

I'd stopped mining of this currency for some time because I didn't see evolution compared to what had been announced, yet al origin i liked this currency

Recently I'm mining some other coins, but turn them immediately into DigiByte. 

+1. There is only so much room at the top. DigiByte has the most potential of getting there. And we will get there!

[1715177874]

1715177874

[DigiByte]

Will anyone from the forum be there in NYC for the convention? We have some free extra tickets to give away.

[,./,./]

DIGIBYTE


there is a solecism in the image

by google play store stay: send digibytes from your moble device

kan you change that?

[BlazingHashes]

www.blazinghashes.com

[Painful Truth]

DigiByte is going main stream. Will you be there with us?

for sure! one of my fave alts.. up in the top 5!

[sammy007]

What is X11 algo status?

Dev, If you are going to change algo to X11, you probably interested in the following bounties https://bitcointalk.org/index.php?topic=554261.0

[DigiByte]

@digibyte  have u guys seen this and have u done anything for this fix yet to digishield?                    
Re: Regarding Auroracoin TW exploit
Today at 01:30:08 PM
   
Reply with quote  #35
Quote from: Nite69 on April 01, 2014, 06:18:18 PM
Quote from: illodin on April 01, 2014, 04:10:21 PM
Every coin that uses KGW should apply the fix as well asap right?
Yes, I think so.
Quote from: illodin on April 01, 2014, 04:10:21 PM

Any idea if digishield or dgw (version2) are susceptible to the same exploit?
Have not yet dig too deeply on it, but:
Digishield: not the same, but possibly similar. KGW counts a lot of blocks to calculate adjustment, digishield only one, so it quite different. In KGW, attacker can 'jump over' the block in the future, which is not possible with only 1 block. Not yet sure, but there might be another TW exploit: Can you generate 2 blocks with dT less than 2xtarget so difficulty won't rise? If you generate block with dT 0, you get diff +25%, if I calculated correctly. next question: can you generate a block with -25% difficulty with less than 2*timespan? I think you get only -12.5% with 2 blocks time, so this hole is not open :-). But not sure if there are others.
 Edit: this is dogecoin digishiel, don't know others..

DGW: possibly, quick peek reveals no fix, but it might be there, have to make deeper look at it to be sure.



I must make a re-estimate on digishield. It does allow back to median 11 blocks, ie one can go back in time.
1 Go to the future 12:00:00 -> get diff -50%
2 Go back 11:59:30 -> get diff +25%

Yes, there is attack vector.
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Re: Regarding Auroracoin TW exploit
Today at 02:24:59 PM
   
Reply with quote  #36
Quote from: Nite69 on Today at 01:30:08 PM
Quote from: Nite69 on April 01, 2014, 06:18:18 PM
Quote from: illodin on April 01, 2014, 04:10:21 PM
Every coin that uses KGW should apply the fix as well asap right?
Yes, I think so.
Quote from: illodin on April 01, 2014, 04:10:21 PM

Any idea if digishield or dgw (version2) are susceptible to the same exploit?
Have not yet dig too deeply on it, but:
Digishield: not the same, but possibly similar. KGW counts a lot of blocks to calculate adjustment, digishield only one, so it quite different. In KGW, attacker can 'jump over' the block in the future, which is not possible with only 1 block. Not yet sure, but there might be another TW exploit: Can you generate 2 blocks with dT less than 2xtarget so difficulty won't rise? If you generate block with dT 0, you get diff +25%, if I calculated correctly. next question: can you generate a block with -25% difficulty with less than 2*timespan? I think you get only -12.5% with 2 blocks time, so this hole is not open :-). But not sure if there are others.
 Edit: this is dogecoin digishiel, don't know others..

DGW: possibly, quick peek reveals no fix, but it might be there, have to make deeper look at it to be sure.


I must make a re-estimate on digishield. It does allow back to median 11 blocks, ie one can go back in time.
1 Go to the future 12:00:00 -> get diff -50%
2 Go back 11:59:30 -> get diff +25%

Yes, there is attack vector.

When the KGW exploit came to light I began to look over other one block readjustment algorithms.  The DigiShield, as DigiByte currently has it implemented, does allow for an attack through time stamp manipulation.  I have looked over Dogecoin's implementation, and it is more than likely vulnerable as well.  It is hard to say however, because Dogecoin has a significantly higher hash rate than most other coins and has included a dampening on the adjustment.  Again, this could be worked around through a determined attack on the largest pools and would probably just cause an attacker to have to work longer at building his chain.  BCX stated that Auroracoin would have needed a hash rate of at least 25X his in order to prevent his attack.  If that number holds true for the DigiShield, then any coin implementing the algorithm is at risk unless changes are made.  The DigiShield algorithm allows for larger drops in difficulty than it does for larger increases, and this makes an attack easier. 

I have yet to run through the numbers on the DGW.  The first version was definitely vulnerable, but the second version, which allows for negatives to decrease the average time, may have plugged the hole.
                                 

Thank you for posting, we will look into this for sure.

[DigiByte]

DIGIBYTE


there is a solecism in the image

by google play store stay: send digibytes from your moble device

kan you change that?

Thank you for pointing this out to us!

[,./,./]

promo video digibyte

discussion topic now live on digibytetalk give feedback see the older version. and looks for the newest updates!

http://digibytetalk.com/digibyte-general-discussion/digibyte-promo-video-**version-1-1-1**/msg800/#msg800

[The_Cashier]

Better rewards
Coins deposited directly in your wallet
DDoS resistant
No registration needed, just a DigiByte address as username
If node is down, you don't lose your DigiByte, your work is saved on network.

JOIN US TO MINE

[DigiByte]

promo video digibyte

discussion topic now live on digibytetalk give feedback see the older version. and looks for the newest updates!

http://digibytetalk.com/digibyte-general-discussion/digibyte-promo-video-**version-1-1-1**/msg800/#msg800

Which video editing program did you use for the video?

[P2PHash]

P2pool using DigiByte v2.0. Now with Cryptsy price displayed
Address: dgb.p2phash.com

P2Pool benefits:
* No registration required
* Distributed hashrate
* Immediate payouts after a block is found
* Higher payouts with transaction fees paid to miners
* No account hack possible

Fee: only 0.5%
Start mining within seconds! Just point your miner to p2phash.com:9022 and use the DigiByte address from your wallet for username, the password doesn't matter.

You can now follow us on twitter: https://twitter.com/P2PHash

[DigiByte]

There has never been a better time to buy DGB!

[DigiByte]

We wanted to give everyone an update on the potential algorithm change. While we are still focusing on gearing up for the Crypto Currency convention next week we are planning on doing several tests with a multi-algorithm implementation in the next couple weeks.

[amdfxman1701]

There has never been a better time to buy DGB!

I agree! Ya'll are doing a great job. Only a handful of other coins have devs as dedicated as ya'll. For that reason alone, I believe Digibyte has a bright 2014-2015.

Can't wait!

[Th3P]

We wanted to give everyone an update on the potential algorithm change. While we are still focusing on gearing up for the Crypto Currency convention next week we are planning on doing several tests with a multi-algorithm implementation in the next couple weeks.

Good to hear, Really hope the convention goes well

[Th3P]

Also people please read and donate DGB to the Washington State Mudslide

https://bitcointalk.org/index.php?topic=549068.msg5975520#msg5975520

Just donated 40k myself

[,./,./]

promo video digibyte

discussion topic now live on digibytetalk give feedback see the older version. and looks for the newest updates!

http://digibytetalk.com/digibyte-general-discussion/digibyte-promo-video-**version-1-1-1**/msg800/#msg800

Which video editing program did you use for the video?

-final cut pro x
-Imovie

have you already  a new image of the crypto convention?

[DigiByte]

promo video digibyte

discussion topic now live on digibytetalk give feedback see the older version. and looks for the newest updates!

http://digibytetalk.com/digibyte-general-discussion/digibyte-promo-video-**version-1-1-1**/msg800/#msg800

Which video editing program did you use for the video?

-final cut pro x
-Imovie

have you already  a new image of the crypto convention?

Thanks! We are still working on some images, we have got most of them off to the printer, we are just finishing the brochure at the moment.

[DigiByte]

Will anyone from the forum here be going to the NYC convention?