Security of Bitcoin Address - page 2.

hosseinimr93

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Quote from: Plaguedeath on February 22, 2023, 02:54:43 AM

AFAIK I haven't see anyone create a thread when they create a new wallet, the wallet have been funded (which mean someone have been use this existing wallet).

That can happen only if you use a malicious tool. There have been cases that people got a used pre-generated address from a malicious paper wallet generator.
If your private key is generated randomly, it's impossible that you generate an address that has been generated by someone else before (Of course, in theory that's possible).

rat03gopoh

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Signature designer - start @$10 - PM me!

Here is a good parable.

Quote from: enmaku on August 29, 2012, 12:26:37 PM

Given your example of 1 billion users at 10 addresses each:

There are 2^160 or about 1,460,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 possible addresses
In your scenario, 1,000,000,000 people are using 10 addresses each for a total of 10,000,000,000 possible addresses
10,000,000,000 / 2^160 should yield the probability of a collision occurring
10,000,000,000 / 2^160 = 0.00000000000000000000000000000000000000684

So the chances of a collision occurring in your scenario are approximately 0.000000000000000000000000000000000000684%

Possibility increases drastically when there is divine intervention. Wink

Plaguedeath

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There's an answer in old thread, my suggestion if you have a question, it's better to use google search by type "bitcointalk.org: your question", but if you don't find any answer then you can create new thread.

AFAIK I haven't see anyone create a thread when they create a new wallet, the wallet have been funded (which mean someone have been use this existing wallet).

Quote from: Rluner on November 19, 2013, 11:32:38 AM

This would be called a "collision" and is highly unlikely.

Keys are 256 bit in length and are hashed in a 160 bit address.(2^160th power) Divide it by the world population and you have about 215,000,000,000,000,000,000,000,000,000,000,000,000 addresses per capita.(2.15 x 10^38)

hosseinimr93

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Quote from: krashfire on February 22, 2023, 02:45:46 AM

What are the chances of anyone accidentally creating the same Bitcoin address?

In theory, that's possible. In practice, that's impossible.
Take note that there are 2¹⁶⁰ valid bitcoin addresses (There are even more addresses if consider all types of bitcoin addresses).

Quote from: krashfire on February 22, 2023, 02:45:46 AM

Is it remotely possible or there is some kind of checks before network, software, God or something would do a check first before approving the Bitcoin address.

No.
Note that your bitcoin address in generated through some mathematical calculations from a random number and you don't need internet connection for that.

krashfire

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Life aint interesting without any cuts and bruises

What are the chances of anyone accidentally creating the same Bitcoin address? Is it remotely possible or there is some kind of checks before network, software, God or something would do a check first before approving the Bitcoin address. Again, I'm just thinking out loud. Hmmm...🤔

Topic: Security of Bitcoin Address - page 2. (Read 268 times)