Bitcoin Forum

I am using an old address 1BPFKnxAENaxp26g8QbWKUWMuedRo5ZjDY from many years and now in 2015 January  , I got my new Samsung Mobile Phone. So, I have pair my blockchain online wallet with my Samsung Mobile where I installed blockchain android wallet.

From that day , I am always using it on only my phone by setting up a PIN CODE for apps. I didn't access it on my Pc a single time as I can do transactions easily from my android blockchain wallet.

Because of continuous use of Blockchain android wallet on my phone , I have forgot my main password now. But, I can still access above btc address .

So, my question is :

If anyone lost his old and main btc address access . Is that member indicated as a alt of any scammer member or he didn't own that btc address . ?

Now I want to change my regular use btc address. But members here ask for old unedited btc address with a signed message.

I can show and prove in any way that I was using that btc address .

Plz clarify my doubt , what to do with this matter.

i don't sure.
address could not figure out a person.
the blockchain online wallet could be backed up if you have an email address.

How it can be backed up if you don't have a passphrase saved or main password. From the day of using Android wallet , I never think of those and continued using it.

I'm not using android wallets because i question the safety of having my funds in a such mobile wallet, but if you can still use funds from your address, you can
prove ownership by sending a prearranged dust amount to the person you want to prove ownership. Similar to what pp/skrill is using when verifying credit/debit cards.
btw you could also contact blockchain support with your issue https://blockchain.zendesk.com/home

cheers

Can I make any announcement or anything that I want to change my personal btc address for receiving funds.

Because members only ask for old btc address signed message only.

And as you said, I can do that but I cannot send small small amount to every person who ask me for signed message. For this issue, I am willing to open a new blockchain wallet and keep the passphrase and everything needed to recover. So that I can sign a mesaage from that new address only forever.

You should have backed up a Mnemonic when you first created your wallet. You can use this to recover your BC.I password.

In theory, your phone should also be storing your password that is decrypted anytime that you enter your PIN on the BC.I app, so you theoretically could get your password from your phone as well, although this would probably require a decent amount of technical know how that the average user probably wouldn't be able to do. 

My understanding is that you are able to send btc "from" a certain address of your choice on the BC.I app, so if you wanted to prove that you controlled a certain private key associated with your account then you could send a small, predetermined amount "from" the address whose private key you claim to have/control.

You should also stop using BC.I as heavily as you do as web wallets are far inferior to other wallet options available as they are much more susceptible to loss and theft.

You should also not reuse addresses as a rule because of the loss of privacy that you incur when you do, along with the loss of privacy of anyone that trades with you (among other reasons)

Ask someone with high trust (e.g. QS, monbux, TBZ, or someone like that) to send you 0.0001BTC to that address, and then send it back to them. If that transaction works out then they can vouch for you and we won't need a signed message.

Can you pm me the Full Procedure step by step how to recover the password from the phone. Also please send me the 0.0001 or 0.0002 btc to my bitcoin address and i will send you back the same to prove the ownership of my bitcoin address. Also vouch for me that I am the only owner of above btc address. 

you wouldn't be having a hard time right now if you had asked the loan to be sent to that address, .

As I mentioned, it is only a theory that you can get your password from your phone. It would also most likely involve doing things that are somewhat technically advanced.

Unfortunately, I do not have any funds earmarked for sending micro transactions to other users for the purpose of confirming they control an address they claim to so they can take out a loan that I have no interest in making.

What you want to say ? Be more specific bro. I don't understand what you have said.

people wouldn't have asked you to sign a message from that address when you want the btc to be sent to that address.

You shouldn't lose any address because you are supposed to backup your private key, don't you?

If you want to change your address, you can sign the following message with your old address:

Is there no way to display the private key on the bc.info mobile app?

By doing this , am I able to change my old address to new address ?

I am willing to use mycelium bitcoin wallet and its address as my personal btc address. Also mycelium android wallet has a option to sign a message.

When people request you to sign with the old address, you just show the signed message so they will know the signatures are equivalent.

EDIT: In any case, you should never delete the backup of your old wallet

I have a backup of my old address . But I forgot the main password of it. I am still having control over that btc address via blockchain android wallet.

As per your suggestion, I am signing a mesaage you have quoted above and I will save it in my pc or phone.

I haven't used it but if it works like the blockchain.info site then anytime you want to take backup of your keys you're asked to provide the password of the account and since OP says he forgot his password the app might not let him view the key.

So OP all this time you were sending and receiving BTC from the app, it never occurred to you take a back up of your keys, what would happen if one day you're not able to access the app? How will you take control of your funds then?

I am going to start using mycelium android wallet for my all transactions now. Also I have written the backup words on a paper which will help me to recover my wallet anytime.

It's all about this topic: https://bitcointalk.org/index.php?topic=1153323.msg12157547#msg12157547 (https://bitcointalk.org/index.php?topic=1153323.msg12157547#msg12157547)

If you really are the owner of the mentioned address there should be no problem to send the loan to this address. If you lie tho and the account you're writing with is hacked and you don't own the wallet, sending funds their would be useless for you. In this case you should better offer a good collateral.

stake your address at tomatocage's thread if you plan to use your new bitcoin address
but I guess someone is funding your loan by now from your other thread

What is the use of staking the old btc address to that thread. ? And after staking the btc address, can i use a new fresh btc address here on forum ? Plz clear my confusion.

[1] so that you can point to that post when you need to prove your ownership. it's not really needed if you already posted that address somewhere else on this forum

[2] you can use a new fresh btc address anytime. just make sure you don't lose the private key of the old address because someone might ask for a signed message from the staked address.

Guys, all of you always ask for a old bitcoin signed message. I want to know, signing up a message from a old posted btc address proves what ?

I mean to say, a professional scammer can buy a alt account with higher rank like " Hero member " and sign a message too . What happened if he scams ?

Can you explain the purpose of signing up a message.

The purpose of signing a message is for you to prove you own the account and to prove that you are the same person who owns the account 3 months ago, you can point to an old post with an address that you can sign a message using that old address. its just to prove that its the same person from 3,4 or 5 months ago or depending when was the oldest post. But it doesn't mean one cannot turn into a scammer.

Even if you have a Legendary status if one day you wake up and feels like scamming people, a Legendary member can do that even if he can sign a message from day 1.

Another bad thing happened with me. Yesterday,  I have restored my phone by taking a backup of every single stuffs and assume blockchain wallet will also stay as it is after I restored the backup.


Phone was hanging many times and processing was also too slow. That's why , I need to restore my Samsung Mobile Phone.

Now I loose access from both android and online wallet due to main password lost.

No. We can't access private keys from both Blockchain.info mobile app and mobile UI.


Your password is changed and your reasons are becoming sketchy. I don't think you can do anything now. The best thing now is to post a new address and continue posting in the forum. If post with new address is a few months old, then you could probably use it to prove ownership.

Edit: Didn't you verify your email in that account? If so, you can reset your password.

Yes. I have verified my mail id. But I don't know   how to reset using it. Please , tell me how to reset the password , if its still possible.

I thought password can be reset but I think I was wrong. Sorry!

Have you enabled email backup? Try to check your email account. Blockchain.info used to send email backups. There maybe a backup in your email too. I don't remember if the option is enabled by default or not.

It is not possible to reset your password. Your password is what decrypts your wallet and bc.i cannot directly decrypt your wallet without your password. The decryption is done on the client side.

You are the only person that has access to that address. You can change it and delete the private key when you wish but you need to create a signature first. Something like. "Iam XXX, i will delete my bitcoin address now and delete this address. I will post a new address now. It is XXXXX."

If you have this then nobody can blame you when you can't sign further messages because the signature is valid and shows that you owned that signature at one point. It should not be possible to fake this.

Did i miss something?

Everything is cleared now. QS suggested me to post a new address from where I can sign a message.

I think that might not be enough. At least if you want to sell the account or proov ownership in the short term.

What a hacker would do when he hacks an account with the intention to sell it or give it out as collateral would be to delete all addresses you posted and post a new address he controls. If he can't delete an address then he might hope for luck.

If you can't sign a message for the old address then, at least up to some months, your account will look risky for potential buyers. I think it will always be good to be safe. Though i wonder why you would delete a private key at all. Safe the private key or/and import it into your new wallet and you are fine.

I even thought about an attack vector from someone selling an account where he posted a bitcoin address in. Before he sells he posts a new address and deletes the old one. Then he sells the account with a fresh account and writes a signature for the new address. Then he waits until the new owner levelled the account up until it is hero or so. Then claims a stolen account and shows the old address in internet cache. He would get the account probably. Though he has to tell why he was not online for one year of course.

Theoretical attack vector i guess. :P

But anway... think about if that would be a problem for you.

I have read everything you wrote above. Actually , I was totally new and a noob when I entered In the bitcoin world. I have opened that btc wallet account to start claiming some satoshis from faucets.  I haven't take the mnemonics phrases seriously  and didn't saved it. I can remember my main password always that time. But from the day of attaching that btc address to android wallet. I was only doing transactions using my phone only with the help of PIN. so, there was no need of main password .

Before some days , accidentally my phone get restored and everything finished. 


Your last query answer is I am not going to sell my account in any how.  Bcoz , I always like to be engaged on bitcointalk.org forum and forum members only.

is it really compulsory to stake my old btc message though ? Plz explain me .

no it's not. actually you are not required (it's recommended, but not required) to do it at all because you already posted your addresses and proved that you own the old one.

Although is not compulsory, but it's really help you in the future, stake your address there is prove if you're the owner. and if your account got hacked, you just sign message with address which you have already stake on that thread.

If you ever get your account hacked or if you want to sell it then you need to prove that you are the real owner of that account and you are no hacker. Otherwise it would be hard to reclaim your account.

If you sign a message you post publicly then make sure that you include event details. Not that someone takes your general signature and makes trouble.

1st thing , I am not gonna sell my one and only one account which helps me to earn my pocket money.  I am dreaming to be a legendary member on bitcointalk forum. And as you said about the security issue of my account , I will set the secret question and answers with a strong password for my account safety.

Do you mean by signing a message with your old address and the message containing the new address? It would help to prove that the account is not compromised if so. If not, you can just stake an address there as it is easier to find your address there.
Changing secret questions and answers with strong passwords would help against bruteforce attacks which the forum have measures to prevent this from happening. Use a different password for different websites, hence you don't need to worry so much if other sites got compromised and hackers cannot access all your accounts. Also, do not download and run any foreign and suspicious programs.

This is good thing to set up the password strongly and use different pass for every site.

But i think stake your address is good backup to your account, if someday you haven't being active om this forum, and bad thing happen to your account. because you can easily sign message with your account.

May i know, what is the procedure of staking my old address. Do i have to just submit the old address or i have to provide the private key along with it too which i don't have it now .?

You should not use the secret question since the encryption of the answer is not that strong. The forum will warn you about that too.

Yes, you can create a strong password. But that is not the only way to hack an account. I think not a few accounts get hacked because the email address attached gets hacked. At least it sounds to me after reading not a few stories about hacked accounts whose password were reset by email.

No, never ever post your private key. If you do then everyone can control your address that private key belongs to.

You can use this thread to stake your address. Simply post a bitcoin address that you control, that you won't lose and backed up and from which you can get the private key: https://bitcointalk.org/index.php?topic=996318.new#new

About how signing a message works. Here is a good explaination: https://bitcointalk.org/index.php?topic=990345

Buddy ,  my email account cannot be hacked in anyway. Bcoz,  2nd factor  authentication is activated on it. If I gave you my email account login details too , you need my mobile phone and mobile number to use the verification code to get my account access.

Simple
Export the address with its private key from your wallet(the one you forget password)
Import the private key in new wallet
That's it

For stake your addres here, you can find a thread on meta section.
don't provide your private key, just your old wallet which you can sign message with.

Hacker nowadays is became more smart.

I cannot sign my old btc address which I lost recently.

That is actually a good email provider then. Though you should not feel too safe with 2FA. It might be hard to hack it but with a poor implementation it might be possible for a hacker to circumvent your account. Hacking doesn't always mean knowing the password. It might mean not needing such things too.

At the end... i don't see a reason why NOT adding another layer of security. It surely can't hurt when you are cautious and back up your private keys.

Did you post that old address? If not then it doesn't matter. A posted bitcoin address only would help you when it was posted some months ago in an unedited post. The older the better since it raises the chance that the account was not hacked because the real owner would have found out about that most probably in the meanwhile.

Buddy, whenever someone will tries to sign in to my gmail account. I will receive the verification call everytime on my Mobile number which is owned by me only. If the hacker don't have my mobile phone, how he will get the verification code and will enter to my account ? its not possible.

No need old btc address, you just need an address which you used now, and for the future if your account got bad thing. you just sign message which have been stake.

The notification email is a good thing that adds additional security.

Regarding the 2FA. You feel safe because no one can get the codes. But what i wanted to tell you is that hackers might not need the code. Only a part of hacks happen because the details are known to be able to login. Many hacks happen because of serverissues, errors in code and so on. Then it might not matter if the hacker does not have the code. He does not need it to check out your emails. Maybe he got a direct database access or something. Then you trusting on 2FA would be a hollow trust.

It might be unlikely that this happens with gmail but still. Things like that happen all the time. You should not feel too safe only because your 2FA.

I think i will leave it now at this. :)