AFAIK electrum is only for desktop/android. I rarely have access to an iOS device, but mycelium is available for iOS[1] and on android it can be used to sign messages. It has the advantage that it even does the formatting for you, so you can just copy to clipboard at the end and paste the entire thing here.

[1] https://itunes.apple.com/app/mycelium-bitcoin-wallet/id943912290?mt=8

Hi again Shorena, finished downloading and here is my address from mycelium 1tyg1zSVXL22vsXoV8yfuWi97XipC734E

Sorry I'm such a noob, here below I copied a format



How about this one?

Edit: I think there is no signed message option in mycelium ios wallet app unlike in the android version

Edit2: or is it the public key portion? Is that the one I supposed to put? Sorry again for bothering

Edit3: I put the public key

Ok thank you so much for the time Shorena, I guess ios wallet don't have the sign message option, I did try to look for it in the app but I can't see one. I'll just have to use a desktop for this one I supposed. Thanks agsin

Well you told us how to sign a message .. But please tell me why it is needed to sign a message. What is it used for and why to sign a message??

As Coinlearn wrote, to prove you own a bitcoin address. Why prove that you may ask.

You can use a signed message as proof of funds. Signing a message with an address that holds a certain amount of funds, shows that you held or hold that amount.

You can use a signed message to prove to someone that you are still the same person as last year. Accounts here are traded often, bitcoin addresses almost never. Its possible though, so its not 100%.

You can use a signed message to agree to a private agreement. Lets say you staked your address in the thread here[1] and want to make a deal with someone you both prefer to stay private for some reason. If you both sign the agreement with your staked addresses you can disclose the agreement if needed. This is often a requirement when bitcointalk accounts are sold. It gives security to the buyer, that the seller will not try to reclaim the account via a signed message to the admins.

You can use a signed message to prove to the admins that you are the rightful owner of a hacked account. Its usually the only way to get a stolen account back.

[1] https://bt.irlbtc.com/view/996318.0

Really this thread has helped me very much as someone asked the signed message from my wallet address but as i was using online web wallet i was not able to get the details but through this thread i got all info about how to sign through lot of wallets web and desktop both

I read your post and I wondered the following; even is a stupid question:

I want to change my wallet but I want to keep a particular network address because I had given and I would not like to change it. Certainly, I had read somewhere that Satoshi proposed to not close ever wallets but I would like to know if is possible to "transfer", I mean to make, the same public address from blockchain wallet to another one; say multibit or electrum.

Thank you


May be the right word is "delete" and not "close" https://bt.irlbtc.com/view/1029071.msg11126810#msg11126810 and somewhere else now I can't remember.