Number of BTC Addresses in use now - page 2.

locopao

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Quote from: arieq on December 31, 2014, 08:10:06 AM

Quote from: BitMos on November 10, 2014, 03:08:31 PM

Quote from: grtthegreat on November 10, 2014, 01:21:34 PM

Can anyone tell me that out of 2^160 addresses possible...

How much is 2^160 in a linear format? Or how many quadrillions are there? Are you competing in addresses mining using reverse asics to get some speed?

I dont know how to say it in quadrillions but in linear format, 2^160 = 1,460,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 addresses. That's really a big number

Sounds like Scrooge McDuck's wealth Grin

Muhammed Zakir

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Quote from: DannyHamilton on December 31, 2014, 10:00:59 AM

Warning about what?

I meant Blockchain.info and similar shows the number of used address, isn't it misleading as it isn't accurate? or is it accurate? Huh

Quote from: DannyHamilton on December 31, 2014, 10:00:59 AM

Why would it matter whether or not you can count the generated but unused bitcoin addresses?

I don't think I can count unused address, I mentioned about used addresses and amount shown in websites.

~~MZ~~

DannyHamilton

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Quote from: Muhammed Zakir on December 31, 2014, 09:53:57 AM

Quote from: DannyHamilton on November 10, 2014, 02:59:26 PM

Additionally, its impossible to know how many bitcoin addresses have been created, but which haven't yet received any bitcoins.

So basically, counting used bitcoin addresses is near to impossible, so why doesn't Blockchain.info and similar doesn't show any warning/messages about this? Huh

Warning about what?

Why would it matter whether or not you can count the generated but unused bitcoin addresses?

Muhammed Zakir

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I prefer Zakir over Muhammed when mentioning me!

Quote from: DannyHamilton on November 10, 2014, 02:59:26 PM

Additionally, its impossible to know how many bitcoin addresses have been created, but which haven't yet received any bitcoins.

So basically, counting used bitcoin addresses is near to impossible, so why doesn't Blockchain.info and similar doesn't show any warning/messages about this? Huh

Quote from: arieq on December 31, 2014, 08:10:06 AM

Quote from: BitMos on November 10, 2014, 03:08:31 PM

Quote from: grtthegreat on November 10, 2014, 01:21:34 PM

Can anyone tell me that out of 2^160 addresses possible...

How much is 2^160 in a linear format? Or how many quadrillions are there? Are you competing in addresses mining using reverse asics to get some speed?

I dont know how to say it in quadrillions but in linear format, 2^160 = 1,460,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 addresses. That's really a big number

Don't worry! 1 quindecillion 461 quattuordecillion 501 tredecillion 637 duodecillion 330 undecillion 902 decillion 918 nonillion 203 octillion 684 septillion 832 sextillion 716 quintillion 283 quadrillion 19 trillion 655 billion 932 million 542 thousand 976 (source WolframAlpha). Wink

~~MZ~~

arieq

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Quote from: BitMos on November 10, 2014, 03:08:31 PM

Quote from: grtthegreat on November 10, 2014, 01:21:34 PM

Can anyone tell me that out of 2^160 addresses possible...

How much is 2^160 in a linear format? Or how many quadrillions are there? Are you competing in addresses mining using reverse asics to get some speed?

I dont know how to say it in quadrillions but in linear format, 2^160 = 1,460,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 addresses. That's really a big number

IflotsEgroj

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Quote from: El Emperador on November 12, 2014, 03:51:38 PM

A related question: how many total BTC addresses can be created? An endless number or there is a limit?

Limited in theory, endless in practice. Wink

DannyHamilton

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Quote from: El Emperador on November 12, 2014, 03:51:38 PM

A related question: how many total BTC addresses can be created? An endless number or there is a limit?

While technically there is a limit, the limit is so high that it is essentially "endless" in terms of how we humans are capable of making use of time.

Specifically there are just a bit more than 1.4615 X 10⁴⁸ possible addresses.

El Emperador

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A related question: how many total BTC addresses can be created? An endless number or there is a limit?

John (John K.)

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Away on an extended break

Quote from: BitMos on November 10, 2014, 03:08:31 PM

Quote from: grtthegreat on November 10, 2014, 01:21:34 PM

Can anyone tell me that out of 2^160 addresses possible...

How much is 2^160 in a linear format? Or how many quadrillions are there? Are you competing in addresses mining using reverse asics to get some speed?

According to wolfram alpha...http://www.wolframalpha.com/input/?i=2%5E160&dataset=

I think that'll need to wait until the heat death of the universe before we'll have a collision.

BitMos

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Quote from: grtthegreat on November 10, 2014, 01:21:34 PM

Can anyone tell me that out of 2^160 addresses possible...

How much is 2^160 in a linear format? Or how many quadrillions are there? Are you competing in addresses mining using reverse asics to get some speed?

DannyHamilton

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Additionally, its impossible to know how many bitcoin addresses have been created, but which haven't yet received any bitcoins.

For example, I just installed a wallet and I created 20 receiving addresses. However, I haven't sent any bitcoins to any of these new addresses yet. Therefore, they don't exist in the blockchain, and until I tell anyone about them, there is no way for anybody to know that they are "in use".

As such, it is nearly impossible to determine how many addresses have been "used". At best, you can make a estimated guess, but you won't know how close your guess is.

If you just want to know how many addresses have ever received any bitcoins at all, it shouldn't be too difficult to parse the blockchain and count them up. I'm not sure that the information will be useful for anything, but it wouldn't be difficult to do.

Keep in mind, however, that many bitcoins aren't sent to addresses. There are P2SH and other types of transactions where the bitcoins are locked by something other than an address.

Rannasha

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Quote from: cr1776 on November 10, 2014, 01:42:29 PM

Quote from: DeAlquezar on November 10, 2014, 01:32:06 PM

Quote from: grtthegreat on November 10, 2014, 01:21:34 PM

Can anyone tell me that out of 2^160 addresses possible, how many BTC addresses have been used atleast once. Till today, I might have surely used a minimum of 150 addresses.

Maybe it helps you a bit:

https://blockchain.info/charts/n-unique-addresses?timespan=all&showDataPoints=false&daysAverageString=1&show_header=true&scale=0&address=

This is probably more of what you are asking for (I think the one above is showing the number of unique addresses seen per day):
http://bitcoinrichlist.com/charts/bitcoin-distribution-by-address?atblock=320000

I don't believe either of these show the total number of addresses that have *ever* had a balance. So an address that had 1 bitcoin 2 years ago, but zero now wouldn't be counted here. You could calculate that of course by parsing the blockchain. (It is difficult to tell for sure whether the "0" in the "Bitcoin Balance" is inclusive or not).

You can use the Blockchain.info data to compute a very clear upper bound. You see that the peak of addresses used per day is a bit below 250,000. Bitcoin has existed since 03-01-2009, so 2137 days. If every day 250,000 new addresses were used, that would be a total of 534 million addresses, or 5.34 * 10^8, where the total number of possible addresses exceeds 10^48.

Of course, this estimate is way above the actual value, which is probably at least a factor 10 lower. But it does nicely show that the number of addresses that have been used isn't even remotely close to the total size of the address space.

cr1776

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Quote from: DeAlquezar on November 10, 2014, 01:32:06 PM

Quote from: grtthegreat on November 10, 2014, 01:21:34 PM

Can anyone tell me that out of 2^160 addresses possible, how many BTC addresses have been used atleast once. Till today, I might have surely used a minimum of 150 addresses.

Maybe it helps you a bit:

https://blockchain.info/charts/n-unique-addresses?timespan=all&showDataPoints=false&daysAverageString=1&show_header=true&scale=0&address=

This is probably more of what you are asking for (I think the one above is showing the number of unique addresses seen per day):
http://bitcoinrichlist.com/charts/bitcoin-distribution-by-address?atblock=320000

I don't believe either of these show the total number of addresses that have *ever* had a balance. So an address that had 1 bitcoin 2 years ago, but zero now wouldn't be counted here. You could calculate that of course by parsing the blockchain. (It is difficult to tell for sure whether the "0" in the "Bitcoin Balance" is inclusive or not).

DeAlquezar

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Quote from: grtthegreat on November 10, 2014, 01:21:34 PM

Can anyone tell me that out of 2^160 addresses possible, how many BTC addresses have been used atleast once. Till today, I might have surely used a minimum of 150 addresses.

Maybe it helps you a bit:

https://blockchain.info/charts/n-unique-addresses?timespan=all&showDataPoints=false&daysAverageString=1&show_header=true&scale=0&address=

grtthegreat

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Can anyone tell me that out of 2^160 addresses possible, how many BTC addresses have been used atleast once. Till today, I might have surely used a minimum of 150 addresses.

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