Sabatoge: "Losing" Bitcoins (AKA the Goldfinger Attack)

bitplane

sr. member

Activity: 321

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Firstbits: 1gyzhw

Quote from: harik on June 29, 2011, 05:29:34 PM

For all the "Why would they do it instead of cashing out?!?!?" remember that a sufficently notorious theft could be tracked and the address-tree blacklisted. But destroying them makes your own stash more valuable, and makes any link between your profit and the destruction immensely difficult to prove.

Exactly. If you had a huge number of bitcoins then introducing innocent-looking bad code into the official client to destroy a larger number of bitcoins would be a cheaper option than trying to take over the block chain.

harik

newbie

Activity: 26

Merit: 0

For all the "Why would they do it instead of cashing out?!?!?" remember that a sufficently notorious theft could be tracked and the address-tree blacklisted. But destroying them makes your own stash more valuable, and makes any link between your profit and the destruction immensely difficult to prove.

bitplane

sr. member

Activity: 321

Merit: 250

Firstbits: 1gyzhw

Completely feasible. A good strategy would be to pay for a multi-pronged attack taking advantage of 0-day vulnerabilities in all the popular clients that are connected to the network, then send all the money somewhere like here:

http://blockexplorer.com/address/1BitcoinEaterAddressDontSendf59kuE

These coins would not be retrievable using the current system

BkkCoins

hero member

Activity: 784

Merit: 1009

firstbits:1MinerQ

Read up on "moving the decimal". If the reduced amount of BitCoins after such an attack caused them to surge in value such that buying them cost too much, then the system will be able to do what is essentially a "stock split" operation. Move the decimal over 1 and re-calibrate. If it was costing $1000 to get a coin then it now costs $100 or $10. Whatever.

It just needs some agreement or co-ordination. How that gets arranged I do not know. I guess the devs decide to code it and the software makes it sync up.

This is how countries re-value their money too.

Fuzzy

hero member

Activity: 560

Merit: 500

EVEN IF somehow, someone destroyed ALL the bitcoins ever, what would be the point?

The next week they'd have to go after the UberMark, the iPoints, NetNotes and Digi-Dollars.

Seriously, eliminating the Bitcoin would only give rise to currencies far stronger and entrenched.

westkybitcoins

legendary

Activity: 980

Merit: 1004

Firstbits: Compromised. Thanks, Android!

Quote from: foggyb on June 21, 2011, 03:02:12 PM

Is it possible to sabotage Bitcoin by accumulating coins (through purchase, theft, or exchange breach, etc.) and then deliberately destroy the wallet that contains the key to these coins?

Presumably these coins are henceforth lost, essentially.

The way to do this with greater certainty would be by actually sending the bitcoins to an inaccessible address, rather than deleting the wallet. Never know when some pesky thief, who copied the wallet via a trojan a while back, might decide to access the coins himself.

But really, you'd just be redistributing wealth to all the other holders of bitcoins. It would take acquisition of a significant majority of the bitcoins in existence before any lack of liquidity affects the marketplace. Right now, we're only using 4 digits beyond the decimal point, right? So there's still plenty of room left for finer divisions. Even acquiring (somehow) and wiping out 50% of the 6-7 million bitcoins that have been mined so far probably wouldn't require any greater accuracy.

And then the remaining 14-15 million bitcoins eventually get mined.

Any attacker attempting to use this method just to "sabotage Bitcoin" is not one to be feared, but rather laughed at.

But hey, if you know anyone wanting to burn their own money, have at it:

1BitcoinEaterAddressDontSendf59kuE

nhodges

sr. member

Activity: 322

Merit: 251

Quote from: foggyb on June 21, 2011, 04:02:59 PM

Can you be more specific please?

You made the analogy to burning dollars. This is obviously a very poor analogy. We can always print more dollars unless you also destroy all the ink in the world, and all the printing presses. Not to mention the fact that only a small fraction of dollars actually exist in physical form. In fact, if I burn a billion dollars, that may theoretically impact the economy in a positive way, since commissioning the printing of a billion dollars in cash will create economic growth.

Does the answer to the hypothetical sabotage lie in creating a new blockchain, or Bitcoin 2.0?

I think your question is a Neo/Matrix question. Who is such a true anarchist they would take something that represents everything they stand for and throw it away? Only the "one" who was destined to destroy the system. Hardly anyone, IF anyone, would do something to such effect. People are driven by greed.

kjj

legendary

Activity: 1302

Merit: 1026

Just like a regular bitcoin, but slightly larger.

indicasteve

full member

Activity: 140

Merit: 100

We used to put pennies on the railroad tracks....then my cousin took a few to the store to try and spend them....lol...the old lady at the store gave him shit and told him it was illegal to do that.

hmm.../me wonders what a bitcoin on the railroad tracks would look like. Huh

wumpus

hero member

Activity: 812

Merit: 1022

No Maps for These Territories

Quote from: Enzo on June 23, 2011, 12:03:53 PM

Here in Italy, it is a crime to burn or otherwise destroy money, even your own money.
I never have known exactly why. I suppose this law has never been applied...

Same here in the Netherlands.

I know of no cases where someone was actually prosecuted for destroying money, but it's certainly not allowed, only the central bank is allowed to do that.

Enzo

newbie

Activity: 14

Merit: 0

Quote from: TiagoTiago on June 21, 2011, 03:54:12 PM

How is burning your own money an attack on the economy?

Here in Italy, it is a crime to burn or otherwise destroy money, even your own money.
I never have known exactly why. I suppose this law has never been applied...

foggyb

legendary

Activity: 1736

Merit: 1006

Quote from: JoelKatz on June 21, 2011, 07:31:25 PM

Do we worry that someone will buy all the coffee in the world and then resell it for much higher prices? This would only be even remotely worth worrying about if bitcoins were so dominant that using other currencies was impractical.

Bitcoins don't grow on small shrubs all over the world. And yes, there are individuals who's job is to worry about monopolies in commodity markets.

The motive behind this hypothetical attack would not be one of profit anyway. Surely you understand this.

JoelKatz

legendary

Activity: 1596

Merit: 1012

Democracy is vulnerable to a 51% attack.

Quote from: foggyb on June 21, 2011, 03:02:12 PM

Is it possible to sabotage Bitcoin by accumulating coins (through purchase, theft, or exchange breach, etc.) and then deliberately destroy the wallet that contains the key to these coins?

Presumably these coins are henceforth lost, essentially.

By losing the coins, the "attacker" would also lose whatever value he had exchanged to accumulate those coins. If he stole the coins or acquired them through other nefarious means, the attack doesn't add anything except it reduces his ability to cash out.

Theoretically, a person could acquire a large number of bitcoins and then use some kind of attack to destroy other people's bitcoins. His goal would be to increase the value of the bitcoins he didn't destroy. The logic would have to be that he couldn't steal those bitcoins as easily as he could destroy them (otherwise, stealing them gives him 100% of their value, obviously more). While he would benefit from this attack (just as he would benefit from simply stealing bitcoins) he would have to divide his gain with everyone else who holds bitcoins. So it seems like it would be so inefficient that it's not worth worrying about.

Do we worry that someone will buy all the coffee in the world and then resell it for much higher prices? This would only be even remotely worth worrying about if bitcoins were so dominant that using other currencies was impractical.

kjj

legendary

Activity: 1302

Merit: 1026

Quote from: Luke-Jr on June 21, 2011, 07:05:25 PM

Quote from: foggyb on June 21, 2011, 04:16:17 PM

In other words, Bitcoin is INFINITELY divisible, therefore the loss of even 99.9% of all bitcoins is not a problem?

Bitcoins are only division down to 2.1e15 units. Changing that is no less difficult than increasing the total BTC count from 21 million to 21 billion, or making it infinite.

But far more likely to be accepted by the community.

Luke-Jr

legendary

Activity: 2576

Merit: 1186

Quote from: foggyb on June 21, 2011, 04:16:17 PM

In other words, Bitcoin is INFINITELY divisible, therefore the loss of even 99.9% of all bitcoins is not a problem?

Bitcoins are only division down to 2.1e15 units. Changing that is no less difficult than increasing the total BTC count from 21 million to 21 billion, or making it infinite.

kjj

legendary

Activity: 1302

Merit: 1026

Quote from: foggyb on June 21, 2011, 04:16:17 PM

In other words, Bitcoin is INFINITELY divisible, therefore the loss of even 99.9% of all bitcoins is not a problem?

Yes. Should the need ever arise, we can switch to arbitrary precision representation.

Coins that are permanently lost are essentially a gift of value to the rest of the bitcoin using world.

foggyb

legendary

Activity: 1736

Merit: 1006

In other words, Bitcoin is INFINITELY divisible, therefore the loss of even 99.9% of all bitcoins is not a problem?

Luke-Jr

legendary

Activity: 2576

Merit: 1186

Quote from: foggyb on June 21, 2011, 03:29:41 PM

How will fractional transactions be expressed if such a sabatoge took place?

Seems cumbersome to ask for 10^-8.002345 coins as payment for a product or service.

Decimal people can use SI units: mBTC or μBTC

Ideally more people might adopt the Tonal system, in which case TBC is a fairly reasonable size.

See also: https://en.bitcoin.it/wiki/Units

foggyb

legendary

Activity: 1736

Merit: 1006

Can you be more specific please?

You made the analogy to burning dollars. This is obviously a very poor analogy. We can always print more dollars unless you also destroy all the ink in the world, and all the printing presses. Not to mention the fact that only a small fraction of dollars actually exist in physical form. In fact, if I burn a billion dollars, that may theoretically impact the economy in a positive way, since commissioning the printing of a billion dollars in cash will create economic growth.

Does the answer to the hypothetical sabotage lie in creating a new blockchain, or Bitcoin 2.0?

TiagoTiago

hero member

Activity: 616

Merit: 500

Firstbits.com/1fg4i :)

No nerve; i just don't think what you describe can harm Bitcoin and it's users in any way (except the part about stealing coins from people)

Topic: Sabatoge: "Losing" Bitcoins (AKA the Goldfinger Attack) (Read 6003 times)