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2
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1answer
26 views

Hypothetical Scenario - Address collision with address with already confirmed outgoing transaction

In a typical case of finding a collision with an address, as long as the private key provided has a consistent public key that hashes to the address, then the coins in that address can be spent. The ...
1
vote
4answers
164 views

Is it wrong to spend Bitcoin from someone else's wallet if my Bitcoin client generates the same address?

I know this scenario is extremely unlikely but what-if by chance I get the same Bitcoin address as another user and the user has hundreds or thousands of Bitcoins in his wallet, is it morally/legally ...
1
vote
2answers
106 views

Cryptocurrency with addresses that cannot collide?

I had originally posted the following question here: Is it possible to have a cryptocurrency based on email address? And now I have come across The Large Bitcoin Collider I have read on Bitcoin ...
2
votes
2answers
472 views

Wallet passphrase uniqueness (noob question)

The Mycelium Wallet has created a Bitcoin wallet for me, then I've written down a 12-word passphrase for the wallet backup. However it looks like a set of words (in the Mycelium) to generate these ...
1
vote
1answer
2k views

Is there a BTC Address generator that will check first blockchain if unused?

I'm looking for a working implementation of a Bitcoin address generator that would accept string or integer then it will check the blockchain if the address is unused before it will print the keypairs....
3
votes
2answers
162 views

I am afraid of private key collision… What is the solution?

I know that there are a massive number of keys, but lets say that someone generate a private key that belongs to me. I know that is nearly impossible. But I want to make that more and more impossible. ...
1
vote
1answer
495 views

How likely are key pair collision attacks? [duplicate]

Is it possible to be profitable by developing a collision application that continually and automatically generate a key pair, check for the existence of the public address in the block chain, and then ...
53
votes
5answers
50k views

What happens if your bitcoin client generates an address identical to another person's?

Here's a what-if scenario: Person A has a Bitcoin address with 25BTC. Person B opens up their Bitcoin client: which may or may not have the complete blockchain (the latter would mean no copies of ...
110
votes
11answers
51k views

Is it possible to brute force bitcoin address creation in order to steal money?

Bitcoin users frequently generate new addresses for each transaction they make, which greatly increases the number of bitcoin addresses being used to receive money. Would it be possible (and ...