Bitcoin Forum

Bitcoin => Development & Technical Discussion => Topic started by: JetRX on August 16, 2015, 01:37:47 PM



Title: New address which is already in use?
Post by: JetRX on August 16, 2015, 01:37:47 PM
What is the probability to generate a new address which is already in use?


Title: Re: New address which is already in use?
Post by: achow101 on August 16, 2015, 01:48:32 PM
very very very very very low

Sometimes however you will get a wallet with a bad RNG (e.g. blockchain.info android wallet) which generates the same address for different people, but those cases are very unlikely to happen.


Title: Re: New address which is already in use?
Post by: DannyHamilton on August 16, 2015, 01:59:09 PM
What is the probability to generate a new address which is already in use?

It is expected to be approximately

1 in 1.4615x1048

That's 1,461,500,000,000,000,000,000,000,000,000,000,000,000,000,000,000

For a reference to get a feel for just how big that number actually is, consider that it is estimated that the diameter of the observable universe is about 8.8×1026 metres or 5.5×1023 miles.

That's 880,000,000,000,000,000,000,000,000 metres
or 550,000,000,000,000,000,000,000 miles


Title: Re: New address which is already in use?
Post by: Remember remember the 5th of November on August 16, 2015, 10:23:37 PM
What is the probability to generate a new address which is already in use?

It is expected to be approximately

1 in 1.4615x1048

That's 1,461,500,000,000,000,000,000,000,000,000,000,000,000,000,000,000

For a reference to get a feel for just how big that number actually is, consider that it is estimated that the diameter of the observable universe is about 8.8×1026 metres or 5.5×1023 miles.

That's 880,000,000,000,000,000,000,000,000 metres
or 550,000,000,000,000,000,000,000 miles

The Universe is constantly expanding and accelerating, pulling our observable universe further apart. So the diameter of the observable universe is increasing all the time.