Bitcoin Forum

Hi, everybody. Could you answer me?
Why my blockchain address changed again?

A bitcoin address is like an invoice number.  It is an identifier that allows you to dertermine who sends you money, when they send it, and why.

A business wouldn't "re-use" an invoice number.  That would be silly.  There are nearly an infinite number of them, and if they receive two different payments both with the same invoice number, then how will they determine who is paying, or what they are paying for?

A person should not "re-use" a bitcoin address.  That would be silly.  There are more of them than all of humanity could use in all the time of the universe, and if they receive two payments both with the same bitcoin address, then how will they determine who is paying, or why?

Every time you give out a bitcoin address to a person or service that is going to send you bitcoins, you should give out a brand new address.  Your wallet can create as many of them as you need.  You will never run out.  And the payments will all go to the same wallet.

What do you mean by your blockchain address changed? Generally (at least for most wallets nowadays), when you're using a wallet, you get a generated address that is what people have to send to. If you mean your means of logging in changed it's possible that someone else is using your account. Make sure to follow all recommended security protocols.

I don't think that's what he meant. Blockchain.info now use hd wallets and DannyHamilton already pointed that out. If OP don't want to change his sending address to change then he could just make a new address offline then import it on his blockchain account.

It changes because that's how hd wallets work. You can still use the previous address you copied it just won't show up in the request button but you can find it on the list of used addresses.

Blockchain is just the same as coinbase that generates a new  address. that is why i stop using their wallet..
I suggest that you should use wallet that you can backup your private keys and  seeds like electrum.. i don't see any option right now that you can backup your all bitcoin address private keys. You can only backup is the seed phrase from blockchain..
And support from blockchain said that us why they are generating new addresses its for security reason.. 

I meant that few days ago I have one address on blockchain.info, e.g. 17EtrrEXEC5dJEJi764UKdMkV8EujEyfZy but today I have another e.g. 314trrEXEC5dJEJi764UKdMkV8EujEyfZa

You can see the other bitcoin address by opening address in the right side near to settings and preferences.. open addresses and you can see show option just click yes and you will see the list of your bitcoin addresses.
I don't know how to show all addresses in mobile blockchain but this will work in desktop..

They are generating address just like any other web wallets like xapo, they have multiple address for each users and I don't know why did blockchain.info do this to us.

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If you are pissed off and annoyed of changing bitcoin wallet address, you may try some other desktop wallets that aren't changing it's addresses. You can even still use the old ones and receive your funds through that address.

Sir I want To Clarify This Issue here, if You are Stating That Your Blockchain address is changed when you are copying it, It means That Blockchain Sites Has no problem at All, it means That You are Infected with the Virus Called Copy paste, I have also Experienced this kind of situation, When i was Participating  a campaign and Put All informations regarding to the qualification, I copied my BTC address (that is supported by Blockchain) and then Paste it, but other Address Shown Up. So I ask, Members Here in This Forum and Then They Answered me That it was A Virus called Copy Paste.

 My Suggestion is Run Your PC a Strong Anti Virus/malware so that  the Virus will be Deleted, This could Be The Solution, Or Just Double Check your Address always when Transacting, I Get That Virus From unsecured sites.

If This is The Problem and my advice is According to your problem please consider this post. Thank you.

Thank you for everybody. I understood that after each operation address change.

it is normal it happens to my wallet and we send to any address it arrive to my wallet so don’t worry.
also it’s better to use new one more than old

yes. I've know it already. I've asked because I've never used before wallet on blockchain. Thank you