How to sign a message?!

[waterboyserver]

Holy moly thanks for sharing this ill use it keep it up

[whynotbit]

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
This is whynotbit from bitcointalk.org and today is 06/02/2017 at 00.10 
First ever attempt
-----BEGIN SIGNATURE-----
1LS2NtskhnjvmF6koAitAY1Dt7w5jj6Aqs
HOd1DOMkoym7DDrXISQ2Ia5fUaZEzoIT9JXgl+IQGdx2V/3Oqb/g7zODxM4LF8X0W49/shaZ52Jhmben+rjqSe8=
-----END BITCOIN SIGNED MESSAGE-----

From Electrum wallet
Someone PLeaseeee answer me ! I wanna know
Edit: Calimero style, Shorena or anybody, is my message good ?

Sorry for the late reply, yes I was able to confirm it, well done.

Thanks Shorena ! Very helpful topic indeed !

[RJX]

Thank you shorena for your helpful thread. Sometimes things are just too obvious so they are overlooked, at least by me but thanks to your explanation I'm a bit wiser today.

So thanks, and bump

[shorena]

A small update, got an answer from the bither team to my bug report.

Currently we do not support signing message option for HD account.

-> https://github.com/bither/bither-android/issues/21

[acidv]

Thank for this super guide on how sign a message 
I am now able to do this!

[Financisto]

Very nice guide we have here!

Thank you shorena for maintaining this thread updated.

Suggestion: don't forget to add the (very) old time player Blockexplorer.com as one option for verifying BTC signed msgs.

https://blockexplorer.com/messages/verify

[buwaytress]

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
Hello! This is buwaytress from bitcointalk.org and today is 27 March 2017. The time is 14:12 GMT.
I am also Sojourner on other sites and this is a signed message for the first BTC address I have ever owned.
I am putting a first signed message to firstly thank shorena for this thread and also to help protect this account should I ever lose it.
-----BEGIN SIGNATURE-----
1ETpArT7mov2cpkSpvEWRoGyDpMyLAQdmx
IIADYyDygCr5QBIyi7Rs6+iXncVp7/htGcOhjH8yk+6QWo79K28fZxA6R5YpWSUlqswLic6NfzltOg5pG5r8/CE=
-----END BITCOIN SIGNED MESSAGE-----

[lockeddeneme]

Ne diyelim...

1PRaXrpBQQsG8THDQbnJu8kEWEctN7ehFV

1MAddP9P5HCrDqgDzEMTU9o7RZ31cSYpqe

Buraya gönderebilirisiniz. Teşekkür ederim.

I couldn't log in my acc after try to changing pass with security question. These are my adress before i posted. Top one is bitpaywallet, other one is copay. Can i have chance to get back my account? I couldn't find way for sign this wallet.

[bL4nkcode]

Ne diyelim...

1PRaXrpBQQsG8THDQbnJu8kEWEctN7ehFV

1MAddP9P5HCrDqgDzEMTU9o7RZ31cSYpqe

Buraya gönderebilirisiniz. Teşekkür ederim.

I couldn't log in my acc after try to changing pass with security question. These are my adress before i posted. Top one is bitpaywallet, other one is copay. Can i have chance to get back my account? I couldn't find way for sign this wallet.

So you're the owner of this account? https://bitcointalk.org/index.php?action=profile;u=921529
Do you have a signed message with those address on this thread? https://bitcointalk.org/index.php?topic=996318.0
Can you sign message one of those address? If you have then message one of the admins here tell them the reason with the signed message from meta and a signed message with this date.

[lockeddeneme]

Ne diyelim...

1PRaXrpBQQsG8THDQbnJu8kEWEctN7ehFV

1MAddP9P5HCrDqgDzEMTU9o7RZ31cSYpqe

Buraya gönderebilirisiniz. Teşekkür ederim.

I couldn't log in my acc after try to changing pass with security question. These are my adress before i posted. Top one is bitpaywallet, other one is copay. Can i have chance to get back my account? I couldn't find way for sign this wallet.

So you're the owner of this account? https://bitcointalk.org/index.php?action=profile;u=921529
Do you have a signed message with those address on this thread? https://bitcointalk.org/index.php?topic=996318.0
Can you sign message one of those address? If you have then message one of the admins here tell them the reason with the signed message from meta and a signed message with this date.

Unfortunately , I didnt know that so I have never done before. Its not hack issue. I just want to change my password. I think, I've not any proof expect my registered email 

[shorena]

Very nice guide we have here!

Congratulations shorena for maintaining this thread updated.

Suggestion: don't forget to add the (very) old time player Blockexplorer.com as one option for verifying BTC signed msgs.

https://blockexplorer.com/messages/verify

Thanks for the suggestion Ive added it to the todo list.

[shorena]

How do i actually proof this bitcointalk account is mine and not hacked? Do i sign a message with my btc address and write 'the account is mine?' Cant the hacker do the same aswell?

Only if they also compromised your bitcoins or have access to your private keys for a different reason.

[buwaytress]

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
Hello! This is buwaytress from bitcointalk.org and today is 27 March 2017. The time is 14:12 GMT.
I am also Sojourner on other sites and this is a signed message for the first BTC address I have ever owned.
I am putting a first signed message to firstly thank shorena for this thread and also to help protect this account should I ever lose it.
-----BEGIN SIGNATURE-----
1ETpArT7mov2cpkSpvEWRoGyDpMyLAQdmx
IIADYyDygCr5QBIyi7Rs6+iXncVp7/htGcOhjH8yk+6QWo79K28fZxA6R5YpWSUlqswLic6NfzltOg5pG5r8/CE=
-----END BITCOIN SIGNED MESSAGE-----

Hi there! I just wanted to check back here after posting my signed message and address above a month ago. Did I post in the wrong format or is this thread no longer usable? If that's so, is there a thread I could use to do this?

Thanks in advance!

[shorena]

How do i actually proof this bitcointalk account is mine and not hacked? Do i sign a message with my btc address and write 'the account is mine?' Cant the hacker do the same aswell?

Only if they also compromised your bitcoins or have access to your private keys for a different reason.

So do i sign a message with my btc address and write 'that the account is mine?

Well you need to use an address that is associated with the account, e.g. on you staked at the 'stake my address' thread here[1].

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
Hello! This is buwaytress from bitcointalk.org and today is 27 March 2017. The time is 14:12 GMT.
I am also Sojourner on other sites and this is a signed message for the first BTC address I have ever owned.
I am putting a first signed message to firstly thank shorena for this thread and also to help protect this account should I ever lose it.
-----BEGIN SIGNATURE-----
1ETpArT7mov2cpkSpvEWRoGyDpMyLAQdmx
IIADYyDygCr5QBIyi7Rs6+iXncVp7/htGcOhjH8yk+6QWo79K28fZxA6R5YpWSUlqswLic6NfzltOg5pG5r8/CE=
-----END BITCOIN SIGNED MESSAGE-----

Hi there! I just wanted to check back here after posting my signed message and address above a month ago. Did I post in the wrong format or is this thread no longer usable? If that's so, is there a thread I could use to do this?

Thanks in advance!

Not sure why I didnt post it, but the message verifies. I also quoted it now, so it should be just as good as if you had posted it in the stake address thread[1]

[1] https://bitcointalk.org/index.php?topic=996318.0

[Fraxinus]

How can I sign a message in the new blockchain?It seems I can't find a sign button there,I've only seen the verify one.It's not in the manage options.

[apoorvlathey]

How can I sign a message in the new blockchain?It seems I can't find a sign button there,I've only seen the verify one.It's not in the manage options.

By blockchain I assume you are referring to blockchain.info

To sign a message, go to the "Settings" tab on left, Click on "Addresses", Click on "More Options" in front of your required address, Choose "Sign Message" .

[shorena]

How can I sign a message in the new blockchain?It seems I can't find a sign button there,I've only seen the verify one.It's not in the manage options.

By blockchain I assume you are referring to blockchain.info

To sign a message, go to the "Settings" tab on left, Click on "Addresses", Click on "More Options" in front of your required address, Choose "Sign Message" .

Does the new version allow signing messages? My last info is only the old wallet version does.

[apoorvlathey]

How can I sign a message in the new blockchain?It seems I can't find a sign button there,I've only seen the verify one.It's not in the manage options.

By blockchain I assume you are referring to blockchain.info

To sign a message, go to the "Settings" tab on left, Click on "Addresses", Click on "More Options" in front of your required address, Choose "Sign Message" .

Does the new version allow signing messages? My last info is only the old wallet version does.

Yes it does allow signing.
I don't use blockchain.info much, but the steps above do work for latest version too ! I checked yesterday only.
It's here :

You may update the OP 

[Fraxinus]

Hmm,I don't see that options.In my more options there is only edit name and  show xPub.I don't know why that happens.You do it with your main address I guess.I click manage and then more options but I can't see sign a message

[Jeremycoin]

How can I sign a message in the new blockchain?It seems I can't find a sign button there,I've only seen the verify one.It's not in the manage options.

By blockchain I assume you are referring to blockchain.info

To sign a message, go to the "Settings" tab on left, Click on "Addresses", Click on "More Options" in front of your required address, Choose "Sign Message" .

Does the new version allow signing messages? My last info is only the old wallet version does.

Yes it does allow signing.
I don't use blockchain.info much, but the steps above do work for latest version too ! I checked yesterday only.
It's here :

You may update the OP 

I believe it will only work for the imported addresses, try to make new address and sign a message with it!