Bitcoin Forum
November 21, 2017, 05:16:12 AM *
News: Latest stable version of Bitcoin Core: 0.15.1  [Torrent].
 
   Home   Help Search Donate Login Register  
Pages: « 1 [2] 3 4 5 6 »  All
  Print  
Author Topic: Is Bitcoin about to be 51%ed???  (Read 4839 times)
irobotnik8
Newbie
*
Offline Offline

Activity: 6


View Profile
June 10, 2014, 11:42:08 AM
 #21

These scare threads are stupid. "HURR DURR POOL HAS 51% OF MINING POWR" What are they going to do? It's not like miners will continue to support that 51% after an attack. The pool would be finished. There is no incentive whatsoever for a pool such as GHash.io to attack the Bitcoin network.

Dude, do you know who runs ghash.io and who owns it?
Check that out and come back later.
You mean cex.io? Yes, I happen to have an account there. There is STILL no incentive for Ghash to attack the Bitcoin network because it would mean a serious loss of customers for CEX.
Join ICO Now A blockchain platform for effective freelancing
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1511241372
Hero Member
*
Offline Offline

Posts: 1511241372

View Profile Personal Message (Offline)

Ignore
1511241372
Reply with quote  #2

1511241372
Report to moderator
Labteck
Sr. Member
****
Offline Offline

Activity: 312


View Profile
June 10, 2014, 11:45:45 AM
 #22

You guys are so cool.But the risk is there.
We have to "belive" in good on gihash?

I have to trust all my money in "they will never do that"?

doent'l like.

▄████████████████████████████████████████████████████████▄
██████████████████████████████████████████████████████████
██████████████████████████████████████████████████████████
██████████████████████████████████████████████████████████
██████████████████████████████████████████████████████████
██████████████████████████████████████████████████████████
██████████████████████████████████████████████████████████
████████████████████  █████████████████████████████████████
███████████████████  ██████████████████████████████████████
██████████████████  ███████████████████████████████████████
██████████████████████████████████████████████████████████
██████████████████████████████████████████████████████████
██████████████████████████████████████████████████████████
 ▀███████████████████████████████████████████████████████▀
       VIORCOIN[by_conty] ▄████████████████████████████████████████████████████████▄
██████████████████████████████████████████████████████████
██████████████████████████████████████████████████████████
██████████████████████████████████████████████████████████
██████████████████████████████████████████████████████████
██████████████████████████████████████████████████████████
██████████████████████████████████████████████████████████
████████████████████  █████████████████████████████████████
███████████████████  ██████████████████████████████████████
██████████████████  ███████████████████████████████████████
██████████████████████████████████████████████████████████
██████████████████████████████████████████████████████████
██████████████████████████████████████████████████████████
 ▀███████████████████████████████████████████████████████▀
        Make International Calls
      Cheap and More Secure
jonald_fyookball
Legendary
*
Offline Offline

Activity: 1246


Core dev leaves me neg feedback #abuse #political


View Profile
June 10, 2014, 05:08:08 PM
 #23

This is serious shit going down.
http://newsbtc.com/2014/06/08/bitcoin-community-abuzz-ghash-ios-uncomfortably-high-hashrate/

Ghash.io at 47% hashrate for the last 24 hours.
Currently between 39-42%.

Just knock off one of the other big pools and its FORKING TIME.

uh...no.

51% attack isn't a fork.


bitcoiner49er
Sr. Member
****
Offline Offline

Activity: 457



View Profile
June 10, 2014, 05:14:45 PM
 #24

Does anyone KNOW what actual % Ghash owns? Anyone with half a brain knows that if miners see to much % at Ghash, they just point their miners at another pool. I just wish more miners would realize that bigger pools don't mean bigger payouts. MAYBE if you pool hop just right, but in the long run it all averages out.

Homo doctus is se semper divitias habet
BetMoose
Sr. Member
****
Offline Offline

Activity: 354

Real Bets. Real People. By Anyone, on anything


View Profile WWW
June 10, 2014, 05:22:51 PM
 #25

Do you really think so? Join the party:

___________Ghash.io will reach 51% (or more) in the next month
Options: Yes | No

BetMoose.com - Wager on real world events. Profit from predicting the future. Create and share your own contracts.
Notanon
Sr. Member
****
Offline Offline

Activity: 383


Pastor of Muppets


View Profile
June 10, 2014, 05:27:05 PM
 #26

Someone else like Cloudhashing or another large-scale hosted setup would start getting close enough to ensure that 51% becomes impossible for GHash.io to pull off, in conjunction with, say, some of the smaller mining pools merging to better increase the chances of them getting shares. Things will gradually move towards share or contract-style setups due to economies of scale. A third or fourth pool of a similar size to both would in effect be increased insurance of the chance of 51% ever occurring.

TL;DR, the odds will shrink in the future of a 51% attack occurring through consolidation and competing services.

AMHash
ASICMINERROCKMINER ● Purchase from: AMHash (20Th/s min) ● Havelock (1Gh/s min)
Cloud-mining contracts: 0.0012 BTC per Gh ● Maintenance fee: $0.001551 per Gh per day ● Upto 6% Christmas Bonus

manrus
Legendary
*
Offline Offline

Activity: 1363


TTM


View Profile
June 10, 2014, 07:55:13 PM
 #27

47%  Shocked
phillipsjk
Legendary
*
Offline Offline

Activity: 1008

Let the chips fall where they may.


View Profile WWW
June 10, 2014, 08:00:10 PM
 #28

Ghash.io did turn off 'some' hashes to lower their network %.

How would you verify that? an attacker keeps their hashing secret until they release their private copy of the chain.

James' OpenPGP public key fingerprint: EB14 9E5B F80C 1F2D 3EBE  0A2F B3DE 81FF 7B9D 5160
jonald_fyookball
Legendary
*
Offline Offline

Activity: 1246


Core dev leaves me neg feedback #abuse #political


View Profile
June 10, 2014, 08:02:43 PM
 #29

people should leave Gash... its too big.


spazzdla
Legendary
*
Offline Offline

Activity: 1358


View Profile
June 10, 2014, 08:04:05 PM
 #30

people should leave Gash... its too big.



Slushies miner here.. but I only have 720 G/hs..

I think it should be common pratice to leave any pool at 35%.
jonald_fyookball
Legendary
*
Offline Offline

Activity: 1246


Core dev leaves me neg feedback #abuse #political


View Profile
June 10, 2014, 08:05:21 PM
 #31


I think it should be common pratice to leave any pool at 35%.

+1.

or even 33 or 30%.

OROBTC
Legendary
*
Offline Offline

Activity: 1316



View Profile
June 10, 2014, 08:17:13 PM
 #32

...

Non-expert OROBTC would like to see a Discus Fish, a Slush, a BTC Guild, an Eligius, or others make it easy and profitable to cloudmine for those of us not ready for primetime, but who want in.

Then droves of people like me would sign up

"AMF" to GHash.IO worries!

What´s say other mining pools? 

Make it worth our while, maybe you will get rich(er?)!!!

Joe_Bauers
Hero Member
*****
Offline Offline

Activity: 783


GCVMMWH


View Profile
June 10, 2014, 08:20:10 PM
 #33

Even if gigahash was at 75% it doesn't mean Bitcoin has been forked or 51%ed. It just means that they would have that option. I'm certainly not saying this is ideal or good and I personally believe in p2p pools, but there would be no legitimate reason for any pool to 51% Bitcoin unless their goal from day 1 was nefarious.  

All that being said, there are some other really nice pools (slush being my recommendation) out there besides gigahash.io, that might be worth a try for some of you to help even things out a bit Wink
halfawake
Hero Member
*****
Offline Offline

Activity: 490


View Profile
June 10, 2014, 08:26:28 PM
 #34

It'll be interesting to watch the price of bitcoins if Gigahash goes over 51%.  My guess: it won't change much.  I suspect that the typical bitcoin user doesn't worry about a 51% attack all that much.  In any case, even if Gigahash gets 51%, unless they aren't legitimate miners and are someone with a vested interest in taking down Bitcoin, which I suspect isn't the case, it's in their own interest to not execute a double spend attack.  They have the most mining power and the coins that they're generating will be devalued if they do, because them hitting 51% might not affect the price of bitcoins much.  But you can bet them executing a 51% attack would definitely negatively impact the price of bitcoins.

Ultimately, I do agree with others who say that miners in Gigahash would be wise to switch to another pool until they get down to the 30% range.  Even if they have no intentions to do a double spend attack on the network, the mere possibility of them doing so might cause a bit of a panic if I'm mistaken and this is something that typical bitcoin users worry about.

BTC: 13kJEpqhkW5MnQhWLvum7N5v8LbTAhzeWj
Joe_Bauers
Hero Member
*****
Offline Offline

Activity: 783


GCVMMWH


View Profile
June 10, 2014, 08:28:04 PM
 #35

Another thought. A real nice TODO for the next version of cgminer would be a pool hop function based of pool hash %.

So if pool A >= 30% move to pool B, etc...
jonald_fyookball
Legendary
*
Offline Offline

Activity: 1246


Core dev leaves me neg feedback #abuse #political


View Profile
June 10, 2014, 08:33:37 PM
 #36

 I suspect that the typical bitcoin user doesn't worry about a 51% attack all that much.  In any case, even if Gigahash gets 51%, unless they aren't legitimate miners and are someone with a vested interest in taking down Bitcoin, which I suspect isn't the case, it's in their own interest to not execute a double spend attack.  


It is not a good idea to let them have 51%.   They could decide at any time to engage in selfish mining and institute a monopoly.
51% power means they could solve 100% of the blocks by producing the longest chains and shut everyone else out...
IF they chose to do that.


Beliathon
Hero Member
*****
Offline Offline

Activity: 784


https://youtu.be/PZm8TTLR2NU


View Profile WWW
June 10, 2014, 08:43:32 PM
 #37

Hardware mining is fail. Use NXT.
I'll CONSIDER investigating NXT when the first google result isn't this: http://www.wwe.com/shows/wwenxt

Until then, YOU are the fail, and nobody cares.

Remember Aaron Swartz, a 26 year old computer scientist who died defending the free flow of information.
Ron~Popeil
Sr. Member
****
Offline Offline

Activity: 406



View Profile
June 10, 2014, 09:07:45 PM
 #38

Ah another fear mongering thread. All of the screeching does more damage than the infinitesimally remote chance that someone might destroy their own profitable business in order to hurt bit coin.

ljudotina
Legendary
*
Offline Offline

Activity: 1022


View Profile
June 10, 2014, 09:08:45 PM
 #39

1) 51% by itself is not a problem. It becomes problem if person who is in control of those 51% does something silly which is highly not in their intrest

2) Fear of 51% attach should not be in "someone massing large amounts of ASIC hardware" or "someone attracting more than 51% of mining power". It's much easier to destroy bitcoin network. All NSA (for example) needs to do is to get to leaders of top 3-4 mining pools (somehow...some dark secrets etc.), and it's game over. As users switch from largest one to smaller pool, nothing change. They are still getting into controlled one. Person / system who would control those 3-4 people (and we all agree it's not hard to control 3-4 individuals) would be running bitcoin network as he wants and would have ability to undermine it so hard that it wouldnt come back up

3) Hardware is not protection of the network. Bitcoin is not strong because of ASIC's, it's strong because of it's protocol. So, if you need to protect software, you dont protect it with hardware, you protect it on software side. Soltions to "pool mining", "51% attack" etc. are out there. Devs just need to implement them inside code.
Robert Paulson
Sr. Member
****
Offline Offline

Activity: 448


View Profile
June 10, 2014, 09:17:07 PM
 #40

51% is totally a problem.
if someone has 51% of hashing power then we have to trust they aren't going to shut bitcoin down one day.
if you want a system where you need to trust someone then it already exists, its called a bank.
Pages: « 1 [2] 3 4 5 6 »  All
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!