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Author Topic: the blockchain will be hacked  (Read 4641 times)
Bitcoinpro
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July 27, 2015, 10:32:21 AM
 #41

H_H

your walls of text and newbie accounts are hilarious

i respect u as a person like i do everyone

but can u tell ur boss at Goldman i say hello Smiley

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icedemon
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July 27, 2015, 03:19:31 PM
 #42

If bitcoin is used by billions of people the number nodes will grow in proportion to the people using it. And bitcoin can still handle the transactions.

Wrong

Miners are the nodes and wasn't nodes going down due to some states they were in are not node friendly.

Plus it doesn't matter how many nodes are writing to the public ledger as the stress test showed, the transaction volume choked it, there's plenty of nodes but the system wasn't designed to handle millions and millions of transactions in a day.

EDITED OUT

I've got years into btc, been taking it for years, I still take it today, only now I don't hold any of it, no long term growth IMO.

Opinions are like you know what, but my opinion comes with a .2% EXPERT RATING on Social Media.

Here's my credentials, I'm expert on quite a few things and bitcoin is one of them.

So it's been HACKED and the nodes can't handle a global demand, period, bitcoin is over but for now it can still be turned into fiat until a UN backed global crypto comes along with a global group managing it.

It's hard to believe your a expert when you say miners are the nodes. If you have your own wallet, then more then likely your running a node. It's hard to believe anything you say, when you don't even know the basics and yet call yourself a expert. I can only believe you joking around.
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July 27, 2015, 03:28:52 PM
 #43

It's hard to believe your a expert when you say miners are the nodes. If you have your own wallet, then more then likely your running a node. It's hard to believe anything you say, when you don't even know the basics and yet call yourself a expert. I can only believe you joking around.

I doubt anyone else ranked in the top .2% of SM for #bitcoin is posting here, this forum is notorious for kook aide drinkers on btc

Yet I am an 'expert' on the topic

I have several wallets, i prefer electrum

I don't waste my efforts 'mining'

I've acquired btc for years by integrating it into many sites we run

so I'm PRO btc as an alternative payment method, some use it

it's good for vice, porn and gambling and to some degree tech services and even minor digital sales like downloads of scripts or ebooks

the whole btc network revolves around 2 things basically

1. public ledger
2. lots of nodes mining and handling the trans that go into the public ledger

stress test showed the network has a problem with volume minor transactions

that's what it proved and kook aide drinkers ignore it

will btc disappear? not in the 'near future' but it will be replaced and the replacement IMO will be a centralized public ledger controlled by a dozen or so trusted nodes using AI level super computers and crypto that isn't even developed yet

so yes, I'm an 'expert' but experts differ on opinions

if you look at all the 'buzz' in SM about btc, I don't say much on it, yet my expert ranking is due to who follows me, who retweets the few things I say on the topic and who favs me

so lots of noise in SM about btc, and a 6 post newb saying I'm not expert and mining isn't a voice of authority

18 months of very negative value growth is all you need to know about btc

now we have the stress test issue

is there a better crypto right now? no

will there be a better crypto using some of the btc ideals? I think so

opinions are like, well you know the saying

my opinion just happens to be attached to a .2% EXPERT KLOUT ranking on bitcoin



jonald_fyookball
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July 27, 2015, 03:36:40 PM
 #44

Eventually, the blockchain will be hacked.
I know it is decentralized and the hacker needed to have control over 51% of the network to 'hack' it! BUT, like any other hack, maybe there is a way we don't know about YET! Everything is 'hackable' from the moment it is online!

What do you think about this?

AFAIK having 51% of the network hashrate does not guarantee control of the network.
It simply implies that one has greater chance of solving a block instead of the rest 49%.
The other 49% though still has great chances of solving the blocks themselves.

As you can see here 21 Inc. has only 4% of the network hashrate yet they solve blocks too Wink

Now, if an entity or group was to accumulate more than 51% of the network hashrate it would be in their best interest to actually use that power to solve most blocks and get the reward.
Remember, that they cannot control Bitcoins they don't own already, so, think about it, what would you do?

You are mistaken.

Having 51% of the network hashrate guarantees that at some point
sooner rather than later, you will be able to establish a mining monopoly
by building the longest chain and locking out all other miners.

If they win a block, you simply build a chain on top of your block
from 1 block ago.  Longest chain wins.

Also please ignore H_H.  He is mostly likely "Sol Adoni" and if
he is not, he is a very similar trolling fool.


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July 27, 2015, 03:47:11 PM
 #45

It was hacked by the stress tests and the volume problem with btc was fully exposed.

prove it ... if you talk about the split of the blockchain, it's not an hack, it's a feature (automated correct by BIP66 enforced).

during the "stress test", i have meit regulary bitcoin transaction without any issue ... BECAUSE i use the bitcoin core 0.11 and automated fees calculation.

so, in the stress test, fees has been at 0,0001 BTC
in "no" stress test situation, the normal fees are 0,00001 BTC for this 2015 year.
Meuh6879
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July 27, 2015, 03:50:45 PM
 #46

But if the bitcoin blockchain were hacked in a DDOS sense

it's not possible.

don't place the exchange at the same point of the Bitcoin network, please ...
H_H
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July 27, 2015, 04:12:45 PM
 #47

It was hacked by the stress tests and the volume problem with btc was fully exposed.

prove it ... if you talk about the split of the blockchain, it's not an hack, it's a feature (automated correct by BIP66 enforced).

during the "stress test", i have meit regulary bitcoin transaction without any issue ... BECAUSE i use the bitcoin core 0.11 and automated fees calculation.

so, in the stress test, fees has been at 0,0001 BTC
in "no" stress test situation, the normal fees are 0,00001 BTC for this 2015 year.

there's several definitions of a 'hack'

DdoS is a hack, it overwhelms a network and disrupts normal flow of traffic on the network

the stress test was equal to many as a form of DdoS attack

normal patterns of the btc network were interrupted and while the ST (stress test) was not a huge test of the network capacity to become a global ecommerce network on the leve of mc/visa, the ST was big enough to show btc has issues handling major transaction volumes, not in volume of worth, but in volume of transactions

you admit your had to change your trans fees during the ST, that's a disruption or 'hack' of a networks normal activity

now the 'buzz' all over the net during the ST was that many had huge waits for confirmations so that showed a major problem with the existing node model

did it get any info from the block chain or make changes? no

but like a DdoS attack it stopped normal network flow and exposed a volume related issue with nodes controlling the public ledger when brute force levels of transactions are entered into the daily flow of transactions

in normal daily use, many hate the slow speed of the nodes to do routine confirmations

during the ST the normally SLOW transactions became like quicksand, most people complained confirmations came to a literal stand still for them

our own network couldn't process any customers trying to get their tokens to pay for services during the ST

so while we don't run mining servers, we do interface with the usual btc protocols to generate tokens for purchases of our services and products and btc was down for the count during the ST and paypal and credit card gateways had no problems handling new orders

I don't think btc is going away soon, but I sure don't hold it now as an asset, it's just a payment gateway for us now, like mc/visa and paypal

but the transactions are way too slow normally and when the ST happened it made btc token generations impossible on our network

the ST was in my opinion a major hack of the btc network, some hacks disrupt networks some take or change data

the ST hack just made the whole btc network go into super slow motion and in business you can't have that

just like how many times have minor DdoS attacks taken this site down?

lots, just read their twitter tweets about all the DdoS hacks they suffer

the ST was a very simple form a DdoS attack and while btc survived it, it did expose a major weakness in the EXPERT opinion of many

kool aide drinkers for btc can't analyze anything about btc objectively, like I said, we take btc and paypal and mc/visa direct

the ST was a hack, that's MY OPINION and yep, unlike most here, in big SM I'm a top .2% expert on #bitcoin

did I jump up and down during the ST and bash btc? no

we did a minor story on it saying it exposed what was already known to many, huge volume will be an issue in the future with btc if it goes mainstream, which it now should never do

who wants to wait 6+ hours to move wealth around or even do minor transations?

1 hour is too long

the ST showed how slow the nodes will be if btc moves from being a hobby sort of quasi-currency into a bigger  percentage of ecommerce

btc had it's 15 mins of fame and huge value growth 2 years ago, the last 18 months shows the value now and it's a nice value, but it is still eratic and there's no reason to think it will move to levels it hit over 2 years ago, it's in a slow death spiral, a great footnote in history, but it will never be a major global currency unit, it doesn't have the ability to handle mega millions of transactions each day as major CC do

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error


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July 27, 2015, 04:53:11 PM
 #48

let's be a little bit crazy here: imagine a virus that propagates through mining software and eventually reach 51% of the network silently! By that time, the 'hacker' in control, would change/manipulate the transactions...
No, he wouldn't.

People seem to have the strangest fantasies about what someone could do with 51% network power. They can avoid transactions to be included in the blockchain (thus effectively blocking some transactions), that's about it. They can NOT change/manipulate transactions, or spend bitcoins they don't have, or create more bitcoins out of thin air, or create illegal / invalid transactions, or anything else.

now, let's suppose a hacker finds a way to know the private keys from the public keys! At the moment this is considered impossible, but.... you never know.

This would implode all the cryptocurrencies down.

error
Mickeyb
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July 27, 2015, 05:11:29 PM
 #49

Well in 6 years it still hasn't been hacked and there is a pretty nice reward for doing it so I highly doubt it. Even if something would go wrong, there is always a way to fix it.

So don't worry and relax! Smiley
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July 27, 2015, 05:30:26 PM
 #50

First post for me. I have invested modestly in bitcoin and I want it to succeed. I am well read but I am no expert - and a total ignoramus  with IT technical stuff.

I have read that if a large, rich state wanted to, they could 'hack'/break the system, presently and especially in the past . They have the '800m USD' of equipment (or whatever the figure was at that point in time) to do it without massive additional investment. So for ideological purposes and by a major power there may be a threat, but each day makes 'hacking' more difficult technically and more controversial/dangerous for that state. With govt sponsors like Goldman Sachs getting invested in BTC (albeit modestly), a hack gets less likely.

A real cynic may say "they" are interested in the technology and are using bitcoin as a live, wild field test to get people used to electronic currency - then later destroy BTC and replace with a centralised government backed/controlled copy. One thing you can be sure of is that governments would LOVE an electronic only currency only they control. But thats a concern for way further down the road and BTC doesn't threaten the dollar yet - it will be a lot more difficult to break the system by the time it does (if).  

Hacking for profit by criminals is less of a concern I think, not only because of the investment in equipment needed (I believe currently about USD 800m - 20% of bitcoins 'market cap'), but also because if you fuck the system, you are basically tainting your own loot. To plunder in a subtle way would make the investment inefficient and to do so wholeheartedly would fuck the system and probably render the bitcoins useless or a lot less useful.

One commenter mentioned the transaction limits as the major drawback rather than security, and this matches my research. I understand there to be practical ways to fix this if the price of bitcoins gets higher, making the 'mining' more profitable. Obviously with more adoptions/transactions, the price has to rise wight he finite supply. However this is something I'm going to be reading about on here, as I don't really know how solid these 'fixes' are or if my thinking is straight.

Peace and prosperity!  
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July 27, 2015, 05:43:13 PM
 #51

Eventually we will land on the sun. one day it has to become dark. then we can land.
but then there wont be any people...

as for the blockchain being hacked i believe it wont happen as its nearly impossible to control half of the whole network for 1 human or company

we could easily advanced to a space living species by then... if we get these baboons out of power that are currently in power we'll get there.
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error


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July 28, 2015, 10:36:37 AM
 #52

https://www.youtube.com/watch?v=Kjtgp5h-jEY

How a millionaire can implode bitcoin network.

error
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July 28, 2015, 10:51:51 AM
 #53

Not yet been hacked since many years.
But still can be hacked by bitcointalk hackers.

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July 28, 2015, 10:59:59 AM
 #54

Not yet been hacked since many years.
But still can be hacked by bitcointalk hackers.


as he says in the video, the attack can be happening at this time (and 'he' only needs ~33% of the entire network - 133PH/s at today's rate - if he preforms selfish mining; and not the 51% that everybody thinks.) and nobody knows until the attacker reveals it.

error
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July 28, 2015, 11:13:54 AM
 #55

https://www.youtube.com/watch?v=bi2thGzzNSs


I noticed now - tell me if i am wrong - he made the wrong calculations in this video...

1PH is 1.000.000 times bigger than 1GH, right?

1GH = 1.000.000.000
1PH = 1.000.000.000.000.000


In the video he calculates 1PH as 1000GH.

error
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July 28, 2015, 11:20:19 AM
 #56

https://www.youtube.com/watch?v=bi2thGzzNSs


I noticed now - tell me if i am wrong - he made the wrong calculations in this video...

1PH is 1.000.000 times bigger than 1GH, right?

1GH = 1.000.000.000
1PH = 1.000.000.000.000.000


In the video he calculates 1PH as 1000GH.

TH in between, so you are correct. The guy would need 1000 more hash than he calculates. Nice find.
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July 28, 2015, 12:56:03 PM
 #57

Well if you count any sort of "attack" on bitcoin a hack then sure it will.. but that's stupid.

AES encryption can easily be changed if broken.

SHA-256 not so much this is true as the mining is now ASIC but.. I don't think you really understand SHA-256 however.

Even 7 trillion penta hash is nothing compared to 1.16 x 10^77..

NOTHING.  Most people get it has 77 "zeros" but they really can't fathom how bit that number actually is. Do some math on it... Perhaps when we are computing with something other than matter it will be at risk.
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July 28, 2015, 12:59:45 PM
 #58

A 51% attack.. really... cute.
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July 28, 2015, 01:03:30 PM
 #59

Well if you count any sort of "attack" on bitcoin a hack then sure it will.. but that's stupid.

AES encryption can easily be changed if broken.

SHA-256 not so much this is true as the mining is now ASIC but.. I don't think you really understand SHA-256 however.

Even 7 trillion penta hash is nothing compared to 1.16 x 10^77..

NOTHING.  Most people get it has 77 "zeros" but they really can't fathom how bit that number actually is. Do some math on it... Perhaps when we are computing with something other than matter it will be at risk.

And even then, we would have upped the blockchain and wallets with the new 'no-matter' computing algorythms. It is not a static thing. We might be able by then to recollect the bitcoin that are now lost in lost wallets, you could go on a treasure hunt and find satoshi in old abandoned wallets, the future sounds neat Smiley

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July 28, 2015, 01:12:43 PM
 #60

I read that there has never been an attack on the block chain that resulted in stolen money. Nothing has there ever been a reported theft resulting directly from a vulnerability in the original Bitcoin client, or a vulnerability in the protocol. For now bitcoin are considered unlikely to be breakable in the near future. But... science has been wrong many times before and there may be some things we don't know yet.
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