Topic: Is bitcoin System Vulnerable ? - page 3. (Read 2320 times)

Maybe in the future, supercomputers can crack something, if one isn't enough, you can put 10-100 working togheter... But why? Just to prove it? Because if they stolen all bitcoin, it will still have value? I don't think so.

directory.io is like a bad joke from at least 4-5 years ago and every couple of months i see a new user around here saying the same thing (this time it is Full Member).

* if you have some small amount of bitcoin knowledge you can see how wrong you are

* if you don't have that, but if you are not too lazy to search you can find out how wrong your are again (this question has been asked a thousand times and explained 10 thousand times)

* if you don't want to use any of the above, then if you have a brain do some calculations: this site was created a long time ago, if it really contained all the private keys don't you think people have emptied each other wallets a million times by now?!!!!

that website is a scam.
it asks for people to put their private keys in.. (literally stealing any funds stored as soon as you hit submit)
it does not check any database (because there is no database)

it does not even ask for a public key.
it is just a private key funds stealer.. dont try it.

note
it has now become obvious why the OP started this topic. he wanted to play dumb thinking noobs will then be scared enough to reveal their private keys by typing them into his "checker".(stealer)

bait. directory.io.... switch privkey stealer..
nice try but epic fail

never hand a private key over to anyone.

i think no bitcoin is like money right its money from the internet that we are using too but if we are going to convert it into fiat then it more be realistic because of some activities that we are going to do and i think in this bitcoin wallet are vulnerable into ddos attack and thats all.

I may like technology but I am not as tech-savvy as those guys (and girls) who develop Bitcoin. However, if there is really a vulnerability in the Bitcoin system, I do not think these tech-savvy people will still continue to develop Bitcoin.

I tried to explain it the best I can so if you want to ignore facts and believe it is a "database" when it clearly IS NOT that would be your choice.

its not a database. the webmaster put that there as a scare tactic/prank to make people things its a searchable database.
its not.

but anyway. feel free to spend the rest of your life, your great great great great great great great great great great great grand childrens lives
trying to search it.

Take a look at the bot of the page you will find " It took a lot of computing power to generate this database. "
Think again dude.

Your problem is that you think directory[dot]io is a database. well it is not a database.

It is a very simple code that generates private keys on the go. Which means when you click on a page it generates private keys based on the number of the page you are in.

And also it is because you are seeing the private keys in WIF format (https://en.bitcoin.it/wiki/Wallet_import_format) which makes you confused. In fact the first page of directory[dot]io looks like this:
0000000000000000000000000000000000000000000000000000000000000001 : 5HpHagT65TZzG1PH3CSu63k8DbpvD8s5ip4nEB3kEsreAnchuDf  
0000000000000000000000000000000000000000000000000000000000000002 : 5HpHagT65TZzG1PH3CSu63k8DbpvD8s5ip4nEB3kEsreAvUcVfH  
and so on. It starts from value 1 and goes up from there.

You can easily make a code yourself and start creating private keys based on 1 to 1,000,000,...........


This site will steal your private keys. It does not search
You would be a fool to go here an insert your private keys to check. Because sites like this don't search with bitcoin address (pubkey) but with private key instead in other words you enter your private key and they empty it for you

Its vulnerable if it hits by trojan or keylogger

You didn't got me did you ?
I meant if someone gets the database by brute force like " http://directory.io "

Then he can Search the database like he's searching Note pad and can easily find a particular Private key of an address.

For Example a website is giving facility to find your address on " http://directory.io " With your Private key.

It's " https://bitcoin-checker.appspot.com/ "

What will happen if Instead of Private key it search the website ( http://directory.io ) with Bitcoin Address and trace Private key ?

ok lets worse case scenario this.

lets imagine all possible private keys at binary level
from
00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000-
00000000-00000000-00000000-00000000-00000000-00000000
to
11111111-11111111-11111111-11111111-11111111-11111111-11111111-11111111-11111111-11111111-11111111-11111111-11111111-11111111-
11111111-11111111-11111111-11111111-11111111-11111111

you may think that 20 bytes looks small but its not the case of changing a bit 160 times. its instead progressively more changes as you go through it.

EG lets start with 3 bits its not
000   001   011   111   done
its
000   001   010   011   100   101   110   111   done

adding another bit is not just one extra change, but double
0000   0001   0010   0011   0100   0101   0110   0111  1000   1001   1010   1011   1100   1101   1110   1111   done
another bit, again double

even with the 160bit limitations it is 1461501637330900000000000000000000000000000000000 combinations
imagine you processed 1000 combinations a second
thats only 31536000000 combinations a year.
meaning you will process all combinations in
46343912903694300000000000000000000000 years

lets say you could do 1trillian combinations a second
thats only 31536000000000000000 combinations a year.
meaning you will process all combinations in
46343912903694300000000000000 years


remember a person only lives ~99 years and has become a grandparent (3rd generation) in that time
so to get to 999 years your descendants need to hand your project down the lineage of offspring 20 times
the next digit (9,999 years) is passing it down your lineage 4000 times
the next digit (99,999 years) is passing it down your lineage 80000 times
in short even if a caveman done 1trillian combinations a second, their modern day ancestor would not have got that far.

The keyspace of the possible Bitcoin address is extremely huge and it makes it IMPOSSIBLE for anyone to even get an used Bitcoin address in their entire lifetime. This is possible if the address generation is not random and thus making the address weak.

The closest thing that you can get to have control over several addresses at once is trying to crack the xpriv keys and that is also impossible. That would grant you access to all the addresses that can be generated under that.

IIRC there are 2^160 possible addresses. So 2^160 private keys.
Even with the current market, we didn't even use 0.01% of it(no research here, it's just obvious that we didn't generate that many addresses), so brute forcing would be stupid or a lucky strike.

if anyone getting profit in legit way than he will not do scam .
since it is a matter of chance that no one knows the admin of main block of mining .
but i will say all things in this are safe and reliable .

yes that is right to say that every thing is possible in this world but i think we have no other choice except to take risk and only then we can make money other wise we can only save our money at home and cannot increase it.

regardless to OP story when the one who brute force succeed and taking over all addresses on bitcoin's world,however the one who doing bruteforce would be depressed trying to take over all the addresses but none of his attempts succeed

to get private key of a known public key it would take many days to get the exact match. take all 26 alphabets and all 10 numbers and you would millions of string so it's not a cup of tea for everyone.

but luckily if you could find the private key by brute force and you found 0btc so what's the use.

somehow i don't think that is possible to break someone address by brute force, its going to take very very long time to do it, and the success chances for cracking someone address is really slim, but it is not impossible, that is why we don't recommended to put many coins in a wallet

yes you are wrong because it is all about the chance of something like that happening or not. let me give you example.

we all know the chances of getting hit by a meteor when you walk out of your house. so what you say here is like some random guy getting out of his house gets hit by a meteor twice and then loses faith in the world