Bitcoin Forum

And growing rapidly.

https://blockchain.info/pools?timespan=24hrs

4 days ago it was 38%

https://blockchain.info/pools?timespan=4days

This feels like ghash.io all over again, except this time there's not even a face on the potential threat...

Probably the BFL guys mining with their clients' mining rigs.

Well PBmining claims to be doing 106 THz. There's a small chunk.

And didn't you read the red letters at the top of the page?

nmaping some of these new players leads me to believe it's an assortment of delivered hardware

https://212.75.96.160/

I'm aware that it doesn't necessarily mean an attack.  But it'd be nice to have an idea of where at least some of that is coming from.  And 106 out of 18000 or so isn't much accounted for...

http://organofcorti.blogspot.co.uk/

check it out. unknowns at ~11%

As long as the unknown 43% is not from the same source, it is ok for me.

Oops, sorry guys. I was playing around with my settings and accidently super-duper-turbo-charged my miner...I'll go ahead and turn it down.

The Antminer S2 finished production and is being shipped in China since a few days.
We should not under-estimate their mass-production capacity.

lol


It could a bunch of solo miners? But chances of that...possibly very low or miners on private pools possibly.

Well, there goes the diff another 20%  ;D

Its only a concern if the whole 45% are coming from a single source. I would highly doubt that.

implying they've even produced mining rigs

Or perhaps they might have bought it from someone else, using their clients' money. They'll mine it for some 6-7 months, and then they'll ship it to the unfortunate client.

Over 45 and we need to be on red alert.

quantum mining.  I posted a tutorial on it yesterday   ::)

"sources" not "source"; all your base are belong to us!

Don't worry about pbmining. they don't have actual hardware.

someone is gonna be able to do a 51% attack pretty quickly..Bitcoin is over, PoS FTW!!!!

It's the NSA.

I suspect a lot of this is the 1Th/s Antminer S2 rolling off the production line and waiting for dispatch on 10th April...  

Remember that the S2 has the power supply built in, so as soon as each machine is complete they will have in running right until it needs to be boxed up and dispatched.

Look back through the difficultly increase, back in oct/nov when the antminer s1 was released the difficultly was rising by 40% every 2 weeks.

They would be foolish not to mine with them for a few weeks before dispatching.

This Dave Carlson guy produces probably close to 10% of the unknown hashrate. So I wouldn't be that worried yet.

http://arstechnica.com/information-technology/2014/03/meet-the-manic-miner-who-wants-to-mint-10-of-all-new-bitcoins/ (http://arstechnica.com/information-technology/2014/03/meet-the-manic-miner-who-wants-to-mint-10-of-all-new-bitcoins/)

This is odd. Seems to be related to the 2^n transactions in blocks. Seems possible there's some flaw somewhere?

31% right now. I guess it depends where you look. This is a pretty acurate site: http://blockorigin.pfoe.be/chart.php

I believe that unknown is actually the company "cloudhashing".
Can anyone confirm or deny?

Aww shit sorry guys. I'll tone my mining rig down a bit.

Just means that PFOE found the source of the remaining 12% hashrate.

Pardon? Do you even understand how a 51% works?
Do you guys also not understand that"unknown source" is not one single miner or group..

Who cares. It's not one group/company/person. Even if it was, they'd be losing money with the prices where they are right now unless they are getting free electricity.

Oh no! A fifty-one percent attack is imminent!

Dave carlson mines with BTCguild.
   MegaBigPower   500,921.75 GH/s

http://organofcorti.blogspot.com

Looks like Andreas Antonopolis is on permanent amber alet for FUD spreading Bitcointalk threads now since the whole malliability thing.

Within minutes of this thread appearing there's now a remark in red on the graph saying:

A large portion of Unknown blocks does not mean an attack on the network, it simply means we have been unable to determine the origin.

LoL !! I can just see him with his head in his hands in despair - oh jeez, another b.s. fud spreading Bitcointalk thread. Better go and do necessaries...

http://thumb9.shutterstock.com/display_pic_with_logo/1279450/138946526/stock-photo-man-holding-his-head-in-his-hands-sitting-on-floor-over-black-background-despair-depression-138946526.jpg

Thanks! You almost attacked us all.

Yeah I bet Andreas reads every single bct post.

Looks like megabigpower is doing a withholding attack against BTCGuild

#5 ranked with most shares
Nowhere to be seen in the blocks found top list.

https://www.btcguild.com/index.php?page=rankings&section=teams

Indeed it looks like withholding attack,
seems like a huge thing

Yes, but this should account for only a fraction of his hashrate. That's "only" around 1% of the current total network hashrate.

We are at 2 PH

Don't forget the Swedes

https://i.imgur.com/pLjE4sS.jpg

I didn't say that anyone was attacking the fucking network :/

I'm sure that the unknown hashrate is from several sources.  Notice I did say "potential".  For all I know, the NSA has contracted a chip foundry to build them their own ASICs.  Is that pretty far fetched?  You bet, very.  Impossible?  No.

Just pointing out that a month ago we had a pretty good idea where 80% of the network resided, now we for sure about barely half.

I was hoping that a few posts in this thread may shed some light on it, and it has, a bit.  We at least know where 2PH is coming from...

You know, even if one entity had 43% of the hashrate, I wouldn't be too worried.

If I had that, I wouldn't even think of doing any sort of attack and jeopardizing my potential 3600 * 43% = 1548 BTC per day.

Yep. A 51% attack would just kill the trust in BTC and will take the value down to zero and the attacker would have all the BTC for himself that have ZERO value.

for those skipping 3 pages of waffle

in short the 'unknown' IS multiple sources that are not linked together via mining, but just put into one category on the piechart.

May be aliens just decided to change their own currency for bitcoin.. ;D Wait for more, i believe it's just the beginning

Are you sure it was Bitcoin and not 'North Korea Coin'?

Don't panic it's just Asicminer getting ready to play!

Bitcoin is dying, 43% of hashrate, that means someone is very close to being able to do the 51% attack, and Control bitcoin.

Bitcoin is dead.

You're assuming an entity doing a 51% attack cares about money.  I'm sure there are several entities in the world who would rather Bitcoin die out because they ahve their "money" in another form and don't want Bitcoin messing with it.

Please stop trolling. For the paranoid: the 43% is not a single miner -- it represents all the miners that have not identified themselves.

Ergo, is anyone else concerned that 51% of the pie is being eaten by an unknown source?

I propose...

http://images.sodahead.com/profiles/0/0/3/2/2/1/8/8/7/pie-chart-86619171852.jpeg

12%

Turn a 2 upside down and mirror it, now looks like a 5.
Do the same to 1, still looks like a 1.
Reverse the order.

That makes 51%

51% attack confirmed. Bitcoin is dead.

not me i'm mining PP coin   :D

Does it really matter where it is coming from? The network is secure.

This.

and

That.

I'm still very very concerned, that 43% hashrate could reach 51% soon, which would allow that person to do a 51% attack and destroy bitcoin.

Can it be NSA or Google?

You aren't concerned. This is just more of your usual FUD. The unknown portion is made up of all the miners that don't identify themselves.

Happy to see someone else has noticed that.

Well it's dropped to 20% now.

Didn't someone already point out that this percentage, which you say is now 20%, is unknown sources, meaning it is almost certainly more than 1 source?  Then it's not like 1 person is controlling all the hash power.

That's the fact that would turn this exciting thread boring. Let's ignore it and get on with our alien theories.

This.

What would the benefits of a 51% attack even be except destroying the bitcoin currency?

As long as they are not from the same source it's a good thing.

This thread should have died long ago. This forum is too cluttered with shit for noobs to learn anything. Time to clean out the junk. This forum should be about bitcoin and the bitcoin protocol. Not stankcoin, geekcoin, potcoin, and every other dumb shit scam alt.

There is no benefit. It happens all the time just like other's have pointed out. It could be 100 different reason's none of which is worth me worrying about. As long as its not one source and its been proven its not. It actually BENEFITS bitcoin blockchain not hurts I repeat it BENEFITS. So don't get all excited over nothing.

Steve