Bitcoin Forum

Worldcoin was recently 51% attacked, but has now been fixed by RealSolid the developer of MCXNOW.com.
The culprit has also been caught. Details in the link below.

http://www.worldcoinfoundation.org/news/confirmed-51-attack-double-spend-attack-worldcoin

http://pastebin.com/s6gMwLRg



P.S. MCXNOW feeshares are now being sold to the public, get them while they're hot!

No need Worry WDC team working on this now!!

we will inform ppls more about this...

unm he flashed a 5 mill wall on wdc wat more proof u need

Who flashed a 5 million wall?

Updated original post with link to worldcoin foundation website with more details on the attack.

I am updating the pool http://wdc.theblocksfactory.com/ to worlcoind 0.6.4.6 (this version rollback the double spend)

Expected downtime : 20 sec

Thanks for quick Fix! ;)

here is more information on this!

http://www.worldcoinfoundation.org/news/confirmed-51-attack-double-spend-attack-worldcoin

We giving big thaanks to gudmunsn (main Dev on WDC) for also this fixing chain ok and clients now!

hope more major pools get fixed asap! :)

Cannot update to the latest version :


With ~ 29GB of free memory, I don't think it's a memory problem

Ok it seems we have to redownload the block chain :s

Pool down till we download 750 K blocks !!

informed DEV's! hope u get answer asap..
main coder is now out for while.. he got loong night fix those things..

nice if u got it working..!

http://wdc.vircurpool.com  seems to be working fine.

Can we please move this discussion to the official thread:  https://bitcointalk.org/index.php?topic=322776.0


Thank you!

so 5 posts, praising realsolid, pumping worldcoin and mcnow fee shares
are we to assume this is a realsolid shill account?

secondly, it's more than a coicidence  worldcoin is being pumped on that exchange before the new site launch
then this 'application' sent to trade worldcoin has all the hallmarks of what mcxnow just did, fee shares, on a site with no indfo or history, and under privacy
scharmbeck.com

can we assume realsolid bought or took over worldcoin and is his latest pumptoy?

please also point out to noobs, there is over quarter or a BILLION of these worldcoins
265,000,000 I think

reserved

Hmm, the plot thickens.

There are only 28,463,236 WDC (http://coinmarketcap.com/) in circulation right now.  Let's be sure to use easily accessible facts when making statements.  

WDC has always been a pump and dump scamcoin from day one.

Its funny how you say educate the noobs and then quote a number an order more than the current supply.

How is it a marketing thread? He didn't even mention buying fee shares in the op...oh wait...couldn't even wait until 2nd post. I like RS a lot for what he has made mcx, even though he did bullshit in the past, but this smells bad  :(

Quite obvious, this series of events...

The marketing is the emphasis on how wonderful his technology was that detected this attack even before anyone but himself was aware of it.

He should be careful, he might break his arms patting himself on the back that hard.

 But yes, mcxNOW is a kickass exchange, it doesn't need the phony hype.


~BCX~

I was trying to be ironic, but I fear that it was lost in the text

I think you might be misinformed on a few things.  How exactly is scharmbeck.com under privacy?  With a little research (very little really), you can find who the owners are.  It is public knowledge.

This why mcxNOW is not going away anytime soon...
It's the PLATFORM for everything that RS has ever dreamed of doing.

Pumping scam-coins, launching MicroCash, hosting his Gaming Ideas, etc, etc...
This dude is a fountain of endless creativity...
And the PLATFORM can make him the biggest Player in the Alt Space.

We agree for once.


~BCX~

Don't know what has happened exactly at MCX, but back-checkpointing and forking the block chain was a very bad move. No doubt RS has protected his coins this way, but do the Worldcoin devs realise how they have screwed up their miners? Many of them are still mining on non-updated pools. I see WDC going down the drain with such project management. PXC has tested it already with the previous developer, never again.

+1

Is anybody have a good explanation about that 51% attack?

By the time of the attack the WDC network had nearly 1 Gh/s of power on the lowest, this means that the attacker needs 1,* Gh/s of power and the network then raises up to 2 GH/s .

This is a lot of hashrate, i think, and a big manouver to only win 64.000 WDC...

Who is this guy? Having such power it a real threat to altcoins ....

Who cares.. Pump and Dump -> Bye Bye

If you knew about the inner workings of the WDC "development" crew, none of this would come as a surprise to you.

clearly I meant TOTAL number of coins possible
as anyone who buys this coin knows the 265 million figure , or should

it's in total to be released: Coins: 265,420,800
to be exact, according to site

also your link  which states 28,463,236 as fact
coinmarketcap is showing wdc out there now as;
9,813,813

http://postimg.org/image/6kavl8pt1/

don't know whether this has anything to do with mining pools out, block explorer problems, don't know


and 3 minutes later, there's 10,511,554 !
http://postimg.org/image/n1808j9pd/

so truth is , you're easily accessible facts , aren't facts at all


the only fact we have is TOTAL number of coins I quoted which is off worlcoin site and original ann thread



see above

If these sites depend on wdc.cryptocoinexplorer.com (http://wdc.cryptocoinexplorer.com)  , the stats will be off for a little while.

With the update, I needed to reconstruct the database and it takes time with a chain over 700,000 blocks long.

I have left the explorer online, and one can see how far the reconstruction is by simply looking at the top block on the home page.

What was the actual fix? I thought just a checkpoint was added to keep it on one of the forks for the moment.