Linked Questions

7
votes
2answers
8k views

What if duplicate wallet addresses are created? [duplicate]

I'm a newbie to Bitcoin, so I apologize if this seems like a "noob" question. So, from what I've read: anyone can create a new Bitcoin wallet. Upon creation, a wallet address is automatically ...
0
votes
1answer
2k views

guessing random private key [duplicate]

From what I understand (which is not much), private key is like id/password for your wallet. So lets say, I have random number generator and I generate random number, is it possible that generated ...
2
votes
1answer
259 views

How does the bitcoin network disallow people generating a key pair already generated? [duplicate]

Is it possible to generate a key pair that has already been generated? Wouldn't it collide with an existing value? I assume it is mathematically very unlikely, but odds higher than 0 are still ...
0
votes
1answer
498 views

Is a Bitcoin address guaranteed to be unique? [duplicate]

I may have misread this but apparently every time you generate an address it is not checked against any other addresses generated? The reason being the sheer scale of the amount of possible addresses ...
1
vote
0answers
381 views

Can a private key enumeration attack be used to steal bitcoins? [duplicate]

Let's consider the following algorithm enumerate all of the private keys for each of the enumerated private keys, generate the relative public key and verify whether there is any unspent coin ...
0
votes
2answers
192 views

Is there a limit to the number of Bitcoin addresses? [duplicate]

Is there a limit to the number of Bitcoin addresses? And if so, what stops someone from making all these addresses and holding the private keys for them so no one else can make a new public key?
0
votes
1answer
86 views

what prevents from address generation to accidentally use an existing one? [duplicate]

How come bitcoin addresses are created in a split second on my wallet app? what promises the address doesn't override a current existing address? I guess the same question applies for a private key...
0
votes
1answer
137 views

Bitcoin Newbie Explaination Mining [duplicate]

Now if the question is stupid forgive me. From what i have understood so far( i could be wrong ) Bitcoin is a digital currency service. Q : What is difference between coinbase.com,blockchain.info ...
0
votes
1answer
96 views

How do wallets know that address is not duplicated if I'm going to make one? [duplicate]

Let's assume that I'm going to make a wallet through Electrum that has some Bitcoin address. So then, How Electrum do know that is not duplicated(Already owned by another person)? Are we just ...
2
votes
1answer
99 views

Bitcoin address security [duplicate]

I understand bitcoin addresses are randomly selected from such a large pool that the statistical chances of someone discovering your address is very low. In light of the above is it still not ...
1
vote
0answers
31 views

Does hashing of bitcoin addresses cause collisions? [duplicate]

There are 2^256 possible public keys. We generate bitcoin addresses by hashing these public keys using SHA256 and then RIPEMD160. Now, since 160 < 256 won't there necessarily be collisions - ...
7
votes
2answers
2k views

Is a bitcoin address collision possible if generating 90 million addresses every 4 hours?

I am running a test to see if I can obtain a successful bitcoin address collision after generating billions of addresses. I am not entirely sure how I would check them yet. Basically I have an extra ...
13
votes
3answers
832 views

What's stopping someone from taking over all the bitcoin addresses?

Anyone can generate unlimited bitcoin addresses. Presumably, there's a limited number of these (even if it's a very very large number). What's stopping someone from taking over all the bitcoin ...
8
votes
2answers
4k views

How many Bitcoin addresses are there?

I was wondering where I could see how many unique addresses currently exist in the blockchain, and especially how many of those have a positive balance. Is that data available somewhere?
4
votes
5answers
543 views

How one checks which customer made a payment

One question I'm not able to properly answer when asked is How exactly the blockchain can verify the identity of the user without a centralized trusted party such as VeriSign? I know this is done ...

15 30 50 per page