How many bitcoin address you have ?

[webbrowser]

I have only one currently, I can't grasp the idea of having hundreds of addresses.. Since I use blockchain. Can anyone clarify why you need 100s, and is it better to use an actual program then a site like blockchain?

Sounds worthy. But, how do you change the default behavior of the blockchain.info wallet, and how do you manage key backup if each transaction creates a new set of keys?

blockchain.info is very difficult to use in a privacy protecting way because you have to change your behavior.  You have to tell it to create a new address each time you want someone to sent you BTC (not too bad).  You can use the shared send advanced function (costs a bit more BUT it will automatically generate a new change address for every send and you will be mixing your transaction in with a lot of other transactions and this is great for privacy).  You can generate your own change addressed by hand and set up your transactions to have good privacy behavior in the advanced send tab but you have to do this all by hand.  I really love the blockchain.info wallet and I use it whenever I want to to a coinjoin (shared send) transaction but you have to be very careful how you use it.

Then, here it the real problem with that wallet:  you have to remember to back up the wallet pretty much after every transaction.  I have mine set to send me an email containing my encrypted wallet after every new keypair is created.  Painful.  And because I am using the email system it is not that secure, so I only use it to hold a minimum amount of BTC.

That is why I highly recommend deterministic wallets.  Get yourself a deterministic wallet and you will never look back.  All you have to do is keep the seed safe and secure and then you never have to make another backup again(!) because every receive address and every change address is determined and can be recovered from that single seed.  Very cool.

So, you back up the seed on paper, make a few copies, laminate them, keep one in a safe hidden location in your house, another in an offsite safe location, etc.  You can even be very clever and store half the seed one place and the other half at a different location.

Of the deterministic wallets the Trezor hardware wallet is probably the safest but it costs $120 for the device.  My favorite Android deterministic wallet is "Wallet32".  There are others to choose from just look around for them or I will get a list together and post it if I get time.

Thanks for the very informative post. 

Trezor looks great, but it would not be practical to carry a giant device around, and it doesn't seem to support the smartphone anyway. Which still means partitioning funds into a smaller mobile wallet.

Would be great to hear your thoughts on the other wallets, when you have the time.

[PenAndPaper]

The more you use bitcoin the more addresses you (should) have. Some people might have 1 or 2 while others might have thousands already.

[williamj2543]

I have unlimited addresses.

Not possible, there is a limit (which will take a very very long time) to the amount of addresses, but its virtually unlimited.

[Leina]

There is a good reason to use new address for every new transaction. Stop people from peaking into what your spend your coin on.

[Soros Shorts]

Probably 1,500 addresses, not counting change addresses.

[BurtW]

Thanks for the very informative post. 

Trezor looks great, but it would not be practical to carry a giant device around, and it doesn't seem to support the smartphone anyway. Which still means partitioning funds into a smaller mobile wallet.

Would be great to hear your thoughts on the other wallets, when you have the time.

You are welcome.  Giant?  That is not how I would describe them.  Anyway, they will be supported on Android fairly soon.

[wordman267645]

There are lot of bitcoin address may be thousand, but you should have to ask like "how many active/used bitcoin address you have?"
some people are used different addresses for their specific purposes like 50-100  same as me but not all of it are actively used.

[nextblast]

I just want you some simple question

1. How many bitcoin address ?
2. If you have lot bitcoin address, why you have/need lot address ?
3. If you have lot bitcoin address, do you put the address on different wallet.dat ?
4. How many address do you think person must have ?

1. Many... But Addresses with more than 1 btc is no more than three.
2. Mostly QT generated change addresses.
3. Nope.
4. No idea 

[MoonTime]

I got approx 10 address, even though I made transactions above 7 BTC

I see no point in using different address for every transaction. 50+ address is over safety.

[Buo]

I have about twenty addresses, five for every wallet I use.

[Vortex20000]

I feel inadequate.

I have 1 address.

[GogglesPisano]

Looking at the poll results, it appears most people are doing the right thing and creating fresh addresses for their transactions.

I predict we will see more coins coming out like CLAMS where you most likely have already been sent some, you just need to scan your Bitcoin wallet.

[dKingston]

I have 3 Bitcoin addresses, I have one address for shopping online, one address for my savings and one address to get payments from signature campaign.
I think 3/4 Bitcoin addresses are sufficient, if you don't care about your privacy.

[datehunter]

I have just one address but I have just entered in the crypto currencies.

[bitcoinminer007]

1. I have 6-8 Bitcoin addresses.
2. I think due to security problem we need lot of address.
3.Yes
4. I think at least 5 address.

[Ayers]

above 50, there was a suggestion to make a new address for every new transaction, well i did follow it even if i find it a bit too extreme

[LeMiner]

Literally thousands..... Too much to count them between all my wallets.

[jjc326]

Literally thousands..... Too much to count them between all my wallets.

That's crazy.  I only have 3.  How do you keep track of them all?  or are some empty and you'll never use them again?

[odolvlobo]

Literally thousands..... Too much to count them between all my wallets.

That's crazy.  I only have 3.  How do you keep track of them all?  or are some empty and you'll never use them again?

Why do you need to keep track of them? Your wallet keeps track of them.

[giszmo]

I just want you some simple question

1. How many bitcoin address ?
2. If you have lot bitcoin address, why you have/need lot address ?
3. If you have lot bitcoin address, do you put the address on different wallet.dat ?
4. How many address do you think person must have ?

1. > 2000
2. paper wallets, bitcoin projects, toying around
3. yes/does not apply
4. 0