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Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: bitpop on May 07, 2014, 09:46:43 AM More than atoms in the universe That is not correct, not even close.The estimated number of atoms in the observable universe (http://en.wikipedia.org/wiki/Observable_universe#Matter_content_.E2.80.94_number_of_atoms) (10^80) is 71 million trillion trillion times greater than 2^160. Molecules? Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: Foxpup on May 07, 2014, 10:07:31 AM More than atoms in the universe That is not correct, not even close.The estimated number of atoms in the observable universe (http://en.wikipedia.org/wiki/Observable_universe#Matter_content_.E2.80.94_number_of_atoms) (10^80) is 71 million trillion trillion times greater than 2^160. Molecules? Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: bitpop on May 07, 2014, 10:09:36 AM More than atoms in the universe That is not correct, not even close.The estimated number of atoms in the observable universe (http://en.wikipedia.org/wiki/Observable_universe#Matter_content_.E2.80.94_number_of_atoms) (10^80) is 71 million trillion trillion times greater than 2^160. Molecules? I think you're being sarcastic. What's the average for a molecule? 3? Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: Foxpup on May 07, 2014, 10:17:22 AM More than atoms in the universe That is not correct, not even close.The estimated number of atoms in the observable universe (http://en.wikipedia.org/wiki/Observable_universe#Matter_content_.E2.80.94_number_of_atoms) (10^80) is 71 million trillion trillion times greater than 2^160. Molecules? I think you're being sarcastic. What's the average for a molecule? 3? Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: thimo on May 25, 2014, 01:43:45 PM More than atoms in the universe That is not correct, not even close.The estimated number of atoms in the observable universe (http://en.wikipedia.org/wiki/Observable_universe#Matter_content_.E2.80.94_number_of_atoms) (10^80) is 71 million trillion trillion times greater than 2^160. Molecules? I think you're being sarcastic. What's the average for a molecule? 3? Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: wachtwoord on May 25, 2014, 01:45:27 PM I think you're being sarcastic. What's the average for a molecule? 3? You think? :| Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: lost7 on May 25, 2014, 11:49:08 PM Way too much to even think about it.
Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: Foxpup on May 26, 2014, 02:07:24 AM minimum size of a molecule is 2 atoms; diatomic molecules. So it's definitely >2 The mean is greater than 2, but not the median, which is a more appropriate average. (A molecule with 2.1 atoms is certainly non-average. ;))Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: Taras on June 06, 2014, 10:53:50 PM minimum size of a molecule is 2 atoms; diatomic molecules. So it's definitely >2 The mean is greater than 2, but not the median, which is a more appropriate average. (A molecule with 2.1 atoms is certainly non-average. ;))Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: nwfella on June 07, 2014, 05:19:12 AM minimum size of a molecule is 2 atoms; diatomic molecules. So it's definitely >2 The mean is greater than 2, but not the median, which is a more appropriate average. (A molecule with 2.1 atoms is certainly non-average. ;))Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: vertak on June 12, 2014, 07:53:12 PM Just doing some pencil and paper math here. I was originally wondering if Bitcoin ever were to see the type of transaction volume that Visa sees, say, something like 300,000,000 transactions per day, would the lack of available bitcoin addresses ever be a problem. If a new address were to be used for every transaction, then it would still take roughly 2^40 days before we used all of the 2^160 addresses. I obtained this number by dividing the total number of bitcoin addresses (2^160) by the number of bitcoin addresses created per day (300 million), which comes out to roughly 2^40 addresses. So even without expanding the number of addresses, we won't have to worry for another trillion years.
Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: acs267 on June 12, 2014, 08:07:39 PM A infinite number, I'm guessing? Since Bitcoin addresses aren't physical, but digital? I don't think a accurate number can be assumed, due to the likelihood of another popping up every second.
Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: DannyHamilton on June 12, 2014, 08:41:35 PM Just doing some pencil and paper math here. I was originally wondering if Bitcoin ever were to see the type of transaction volume that Visa sees, say, something like 300,000,000 transactions per day, would the lack of available bitcoin addresses ever be a problem. If a new address were to be used for every transaction, then it would still take roughly 2^40 days before we used all of the 2^160 addresses. I obtained this number by dividing the total number of bitcoin addresses (2^160) by the number of bitcoin addresses created per day (300 million), which comes out to roughly 2^40 addresses. So even without expanding the number of addresses, we won't have to worry for another trillion years. 2160 / 300,000,000 = 4.87 X 1039 240 = 1.1 X 1012 I'm pretty sure that 1039 is MUCH larger than 1012 You're probably looking at something more like 2131 days. Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: DannyHamilton on June 12, 2014, 08:47:37 PM A infinite number, I'm guessing? Since Bitcoin addresses aren't physical, but digital? I don't think a accurate number can be assumed, due to the likelihood of another popping up every second. Not infinite. There are only 2160 possible different bitcoin addresses since they are based on a 160 bit hash. Of course, if in some extremely unlikely event the people of the future should decide that 1,461,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 addresses aren't enough, they could create a new address type that used some other hash function. Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: Peter R on June 12, 2014, 09:05:32 PM More than atoms in the universe That is not correct, not even close.The estimated number of atoms in the observable universe (http://en.wikipedia.org/wiki/Observable_universe#Matter_content_.E2.80.94_number_of_atoms) (10^80) is 71 million trillion trillion times greater than 2^160. Interestingly, 10^80 ~= 2^266. So if ECDSA public keys were just hashed by SHA256 (and not hashed again with RIPEMD-160 to shorten the address string) then the total number of possible addresses would be comparable to the estimated number of atoms in the observable universe. Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: Unshakeable Convoy on June 13, 2014, 09:33:59 AM Didn't you know? All the private keys got leaked on this site: http://directory.io/ ::) Bitcoin has been hacked!
Now we wait for search engines to index it, then you can search by Bitcoin public address and find the private key. </sarcasm> Title: Re: How many possibly bitcoin addresses are there exactly? And how long does it... Post by: 3elks on June 13, 2014, 09:47:38 AM In this world there never gonna be lack of bitcoin adresses. ;)
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