This shouldn't happen in the lifetime of the universe(Vanity Address generated) - page 2.

jacklito

newbie

Activity: 16

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Quote from: Spoetnik on November 07, 2015, 01:30:11 PM

why would you create a vanity address that looks like random meaningless crap ?
then why on earth would you go and run right away and check i fit had coins in it ?
i think your behavior+story is fishy / sketchy guy..

Well as explained in the OP. Here's more detail of what occurred.

I was testing in armory the import private key function. So typed something random and clicked enter in vanitygen.
I then proceeded to add it to my wallet to only find my wallet displaying a balance. Confused. I checked blockchain and to much my surprise
noticed there was a balance sitting on that address.

I was going to do one test then go to generate an address using the first few chrs of some significance like a name, object for example.

Yes again you shouldn't believe me and I don't believe it either since such an event is astronomically improbable. I mostly just wanted to know the odds
and got my answer in this thread.

Spoetnik

legendary

Activity: 1540

Merit: 1011

FUD Philanthropist™

why would you create a vanity address that looks like random meaningless crap ?
then why on earth would you go and run right away and check i fit had coins in it ?
i think your behavior+story is fishy / sketchy guy..

jacklito

newbie

Activity: 16

Merit: 0

Quote from: FanEagle on November 07, 2015, 01:13:31 PM

Let's say it my way.
It's possible like if I win powerball jackpot for 5 times in a row.

Are you saying I should play the lottery? Maybe I should but then again chances have no memory. So my odds of winning the lottery is still just as likely as anyone else
and probably wouldn't win even if I played for 100's to 1000's of years.

Also If I did win 5 times in a row. They'd probably think I rigged it or have some inner rigged mechanisms and I'd bet I wouldn't get paid out and probably end up in prison for
fraud or attempting to manipulate the results. Just due to the improbability of such an event.

FanEagle

legendary

Activity: 2884

Merit: 1117

Let's say it my way.
It's possible like if I win powerball jackpot for 5 times in a row.

jacklito

newbie

Activity: 16

Merit: 0

Quote from: Kozlov on November 07, 2015, 12:46:14 PM

the chances are extremely low.

Indeed

Kozlov

full member

Activity: 212

Merit: 100

the chances are extremely low.

RustyNomad

sr. member

Activity: 336

Merit: 251

Just some odd bits plucked from the internet...

Quote

However, if one was to chose a random seed, here are the probabilities of accidentally ending up with the same keypair / address:

To obtain the same address, the result of RIPEMD-160 hashing would need to be the same. Probability of that happening is 1 in 2^160.

To obtain the same private key, it is a probability of 1 in n, where n is the order of secp256k1 and equal to FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFE BAAEDCE6 AF48A03B BFD25E8C D0364141, or about 2^256.

Quote

In simple terms, if you were testing against 500k patterns at 25/Mkey a second, it'd take about 25 quadrillion years to get a few collisions. Factoring out the randomness of course, as the nature of randomness entails that it could take 2 seconds or 2 sextillion years.

Even if you put all the calculating power of the entire bitcoin network on it, it would still take 10^12+ years.

This site explains it quite nicely...

Quote

Let’s say it’s 2045 and the world population is 9 billion. In an unrealistic scenario, every single person on the earth is using Bitcoin and each person has created and used 10 million addresses; yes let’s go overboard with this: that would mean a total of 90,000,000,000,000,000 addresses spent addresses.
So, the possibility of collision, in this scenario is:
90,000,000,000,000,000 / 2^160 = 0.00000000000000000000000000000000615%
You see, 2^160 is really a very large number. Very large. Much larger than our brains can comprehend.

http://www.miguelmoreno.net/bitcoin-address-collision/

Quote

Comparatively speaking, your odds of being struck by lightning are about 1 in 280,000, so you’re about 500,000,000,000,000,000,000 times more likely to be struck by lightning than to find an address within the first year. Since that’s also a big number, the odds are equivalent to being struck by lightning about 4.6 times in your lifetime.

jacklito

newbie

Activity: 16

Merit: 0

Quote from: Kozlov on November 07, 2015, 12:09:57 PM

Quote from: jacklito on November 07, 2015, 12:08:32 PM

Quote from: Kozlov on November 07, 2015, 11:32:31 AM

it looks like a fake/madeup address.

https://blockchain.info/address/1AxPR69MZ3FnadhGrG4wMq69Q7svvnqdti
The address is a real valid bitcoin address.

Its a valid address but does anyone in the world have the private keys for that address?

I would of replied sooner, but there is a newbie restriction of posting every 10 mins or so.
Program: https://en.bitcoin.it/wiki/Vanitygen

Well if I did find a address containing coins. Yes theoretically there should be another person out there that has the private keys to that address as well.
Me and that person. It is possible to find the private key of an address containing coins of another person address but its so improbable we are talking many universe lifetimes.
I am just wondering what the odds are that if someone here can calculate the odds of such an event occurring.

Kozlov

full member

Activity: 212

Merit: 100

Quote from: jacklito on November 07, 2015, 12:08:32 PM

Quote from: Kozlov on November 07, 2015, 11:32:31 AM

it looks like a fake/madeup address.

https://blockchain.info/address/1AxPR69MZ3FnadhGrG4wMq69Q7svvnqdti
The address is a real valid bitcoin address.

Its a valid address but does anyone in the world have the private keys for that address?

jacklito

newbie

Activity: 16

Merit: 0

Quote from: Kozlov on November 07, 2015, 11:32:31 AM

it looks like a fake/madeup address.

https://blockchain.info/address/1AxPR69MZ3FnadhGrG4wMq69Q7svvnqdti
The address is a real valid bitcoin address.

Kozlov

full member

Activity: 212

Merit: 100

it looks like a fake/madeup address.

techboy2

newbie

Activity: 84

Merit: 0

Ok. I'd be interested to know the probability for this as well. And I'd also like to know why shouldn't such a simple thing have a probability of 0. Sounds absurd to me.

jacklito

newbie

Activity: 16

Merit: 0

Quote from: FanEagle on November 07, 2015, 10:19:10 AM

Highly improbable, but somehow possible, with quantistic computers? Roll Eyes

Theoretically, but only with an address that has spent once. You could in theory get the private key from the public key using quantum computers.
However this address has never spent, so that wouldn't be possible.

Quote from: techboy2 on November 07, 2015, 10:24:40 AM

What is the proof that you're not lying? Also, what is the proof that somebody didn't transfer you BTC? I am new to Bitcoin. Can you please elaborate how is your proof infallible?

Yes this isn't really possible. Let alone even if I were to sign it, I could of theoretically payed someone to sign the address for me, etc. To 100% proof it, is a bit of a problem
in computer science. You shouldn't believe me anyways, I can understand why you wouldn't. I wouldn't in your situation for sure.

All I wanted to know is the odds of such an event occurring. Can someone calculate this and post the answer?

sirohige

hero member

Activity: 784

Merit: 500

so you get free 0.2BTC Undecided

techboy2

newbie

Activity: 84

Merit: 0

What is the proof that you're not lying? Also, what is the proof that somebody didn't transfer you BTC? I am new to Bitcoin. Can you please elaborate how is your proof infallible?

FanEagle

legendary

Activity: 2884

Merit: 1117

Highly improbable, but somehow possible, with quantistic computers? Roll Eyes

jacklito

newbie

Activity: 16

Merit: 0

Quote from: RustyNomad on November 07, 2015, 10:07:53 AM

That address was only funded about an hour or two before your post so the logical assumption, at least for me, would be that you funded the address.

Yes I was quite surprised to have found an address with coins let alone it had been funded within such a short frame of finding it. However again I can understand your skepticism. I myself don't believe it either.

I am just wondering if someone could calculate the odds and post it here of the odds of such an event occurring.

RustyNomad

sr. member

Activity: 336

Merit: 251

That address was only funded about an hour or two before your post so the logical assumption, at least for me, would be that you funded the address.

jacklito

newbie

Activity: 16

Merit: 0

http://s16.postimg.org/wzs7ep6lh/address.png

I understand why no one would believe this since its so improbable. It shouldn't happen in many universe lifetimes. However I checked it on blockchain seems to be a recently deposited address of some coins.

I used a vanitygen program to generate an address. Did one as a test or so, and see how the process of adding privatekey to your client works exactly, before I go out and generate an address with a name, or thing in the first few chars. Much to my surprise it contained 0.248127 BTC. Which doesn't make any sense what so ever. Sure its possible but we are talking many universe lifetimes for such an occurrence to occur.
https://blockchain.info/address/1AxPR69MZ3FnadhGrG4wMq69Q7svvnqdti

I can understand why you'd think I am making this up. I would say the same thing in your position as well. The thing is anyone to generate a vanity generated address that has BTC in it is so unlikely that no one would even think once about it being true.

Anyways I thought I should let you know

~~Update: I am just wondering if someone could calculate the odds and post it here of the odds of such an event occurring.~~

Odds of such an event occurring: 0.00000000000000000000000000000000615%
Or 1 in 1 in 160,000,000,000,000,000,000,000,000,000,000
Which is also 1 in 1.6 Nonillion

Topic: This shouldn't happen in the lifetime of the universe(Vanity Address generated) - page 2. (Read 1416 times)