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Author Topic: How to sign a message?!  (Read 139549 times)
Iranus
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July 08, 2017, 02:38:40 PM
 #501

Hi,

I am using www.unocoin.com for my BTC wallet, It is an Indian BTC wallet provider.  I dont know how to sign a message with their BTC address, can anyone here suggest me a way to sign a message with unocoin BTC address.
I don't know if that wallet you are using is supported by a sign message .It is better to pick some wallets in the OP and follow the steps then you are good to go and signed message.
I signed up to the wallet for the purpose of seeing whether they have that function.  It appears that the wallet doesn't have that feature.

Unocoin is an online wallet - this means that they are holding your coins for you.  If they allow you to have access to your private keys, you can sign a message - but it doesn't appear that they do.

You should consider moving your coins to a personal wallet if you want to do this.

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July 08, 2017, 02:40:45 PM
 #502

Is there a way to sign a message using the new Blockchain.info wallet? In the old version it was quite easy. But in the new version, they seems to have removed this functionality. Actually, this is quite frustrating.

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July 08, 2017, 03:17:00 PM
 #503

Is there a way to sign a message using the new Blockchain.info wallet? In the old version it was quite easy. But in the new version, they seems to have removed this functionality. Actually, this is quite frustrating.

You can't sign messages with addressss created in new Blockchain.info wallet. If you have imported private key or if your addresses were created in old Bloclchain.info wallet, you can sign messages. If you want to sign messages with addresses created from new Blockchain.info wallet, you will have to first get private key of that address from seed (aka 12-word recovery phrase) and then import private key to a wallet or use a program only for signing messages.

https://github.com/iancoleman/bip39

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July 08, 2017, 04:58:26 PM
 #504

Is there a way to sign a message using the new Blockchain.info wallet? In the old version it was quite easy. But in the new version, they seems to have removed this functionality. Actually, this is quite frustrating.

You can't sign messages with addressss created in new Blockchain.info wallet. If you have imported private key or if your addresses were created in old Bloclchain.info wallet, you can sign messages. If you want to sign messages with addresses created from new Blockchain.info wallet, you will have to first get private key of that address from seed (aka 12-word recovery phrase) and then import private key to a wallet or use a program only for signing messages.

https://github.com/iancoleman/bip39

I am also facing the same problem, as I can't sign messages with the new Blockchain.info wallet. How to get the private key of this wallet? I have the 12-word recovery phase with me (written down in paper).
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July 08, 2017, 06:12:26 PM
 #505

Is there a way to sign a message using the new Blockchain.info wallet? In the old version it was quite easy. But in the new version, they seems to have removed this functionality. Actually, this is quite frustrating.

You can't sign messages with addressss created in new Blockchain.info wallet. If you have imported private key or if your addresses were created in old Bloclchain.info wallet, you can sign messages. If you want to sign messages with addresses created from new Blockchain.info wallet, you will have to first get private key of that address from seed (aka 12-word recovery phrase) and then import private key to a wallet or use a program only for signing messages.

https://github.com/iancoleman/bip39

I am also facing the same problem, as I can't sign messages with the new Blockchain.info wallet. How to get the private key of this wallet? I have the 12-word recovery phase with me (written down in paper).

Download https://github.com/iancoleman/bip39 and open it. Enter your 12-word seed (aka recovery phrase) in "BIP39 Mnemonic". Scroll down and you will see your addresses and private key corresponding to each one. Import private key of the address you want to sign with into a wallet such as Electrum, Bither or Blockchain.info or use a tool like https://github.com/weex/bitcoin-signature-tool.   If you want to sign message with a "change" address, change '0' to '1' in "External/Internal".

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July 18, 2017, 11:12:49 PM
 #506

I can't sign my coinbase Bitcoin address. I followed all the steps given in coinbase https://support.coinbase.com/customer/portal/articles/1526413-how-do-i-sign-a-message-with-a-bitcoin-address-   but when I click sign message it wont create any signatue. What can I do??
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July 19, 2017, 04:55:28 AM
 #507

I can't sign my coinbase Bitcoin address. I followed all the steps given in coinbase https://support.coinbase.com/customer/portal/articles/1526413-how-do-i-sign-a-message-with-a-bitcoin-address-   but when I click sign message it wont create any signatue. What can I do??

In case of coinbase Id try to contact their support.

Im not really here, its just your imagination.
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July 19, 2017, 05:15:10 AM
 #508

Well, wish I found this thread a couple hrs back. BIG thanks for very informative and clear instructions.
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July 19, 2017, 06:19:12 PM
 #509

I can't sign my coinbase Bitcoin address. I followed all the steps given in coinbase https://support.coinbase.com/customer/portal/articles/1526413-how-do-i-sign-a-message-with-a-bitcoin-address-   but when I click sign message it wont create any signatue. What can I do??

In case of coinbase Id try to contact their support.

I contract to coinbase support but there is no response. It may take several days to get a response from them. So I have to wait.. as coinbase said "Notice: Our support team is currently under heavy load and may take several days to respond. Please check our help docs and forum for solutions to most problems."
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July 20, 2017, 08:09:54 AM
 #510

Is there a way to sign a message using the new Blockchain.info wallet? In the old version it was quite easy. But in the new version, they seems to have removed this functionality. Actually, this is quite frustrating.

You can't sign messages with addressss created in new Blockchain.info wallet. If you have imported private key or if your addresses were created in old Bloclchain.info wallet, you can sign messages. If you want to sign messages with addresses created from new Blockchain.info wallet, you will have to first get private key of that address from seed (aka 12-word recovery phrase) and then import private key to a wallet or use a program only for signing messages.

https://github.com/iancoleman/bip39

I am also facing the same problem, as I can't sign messages with the new Blockchain.info wallet. How to get the private key of this wallet? I have the 12-word recovery phase with me (written down in paper).

Download https://github.com/iancoleman/bip39 and open it. Enter your 12-word seed (aka recovery phrase) in "BIP39 Mnemonic". Scroll down and you will see your addresses and private key corresponding to each one. Import private key of the address you want to sign with into a wallet such as Electrum, Bither or Blockchain.info or use a tool like https://github.com/weex/bitcoin-signature-tool.   If you want to sign message with a "change" address, change '0' to '1' in "External/Internal".

I was able to sign an address using this method of yours sir.
Doesn't took long enough Smiley
thank you.

just to make sure. is this what signature looks like?

-----BEGIN BITCOIN SIGNED MESSAGE-----
This is julerz12 of bitcointalk.org signing this address: 1KQrcHGoo2KFNFvnkYExxJY8TUJXFgJ1QR as proof of ownership on 7/20/2017.
-----BEGIN SIGNATURE-----
1KQrcHGoo2KFNFvnkYExxJY8TUJXFgJ1QR
H/4eGLetfs0b1h8jPsebprQkshiWffh4jEZ0YUFNYxlq7LF07Gr4noWFUNhfcTmfRzZBiItvjJcjvMTdTelKFEA=
-----END BITCOIN SIGNED MESSAGE-----

Also, I picked that address ( 1KQrcHGoo2KFNFvnkYExxJY8TUJXFgJ1QR ) on the very top list of generated addresses.
('cause there seems to be alot of addresses listed when it was generated ) won't that be a problem?
I used the BIP39 Mnemonic i had on blockchain.info.

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July 27, 2017, 09:29:18 PM
Last edit: July 27, 2017, 09:41:31 PM by iamaruf
 #511

-----BEGIN BITCOIN SIGNED MESSAGE-----

I am iamaruf. owner of this address. 27-07-2017

-----BEGIN SIGNATURE-----

1MaRUFhkrKjcUwvEsBMBLGoD27sXdHokdy

HHHBrBuxhbWCzh5ldCyws7zsjJL7829GORqaOw63T24hWAIJilJ5/2ZuRqx7HuxDKssix6uEuKSDMUcGXPuPhxc=

-----END BITCOIN SIGNED MESSAGE-----

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July 27, 2017, 09:38:38 PM
 #512

-----BEGIN BITCOIN SIGNED MESSAGE-----

I am iamaruf. owner of this address. 27-07-2017

-----BEGIN SIGNATURE-----

< 1MaRUFhkrKjcUwvEsBMBLGoD27sXdHokdy >

< HHHBrBuxhbWCzh5ldCyws7zsjJL7829GORqaOw63T24hWAIJilJ5/2ZuRqx7HuxDKssix6uEuKSDMUcGXPuPhxc= >

-----END BITCOIN SIGNED MESSAGE-----

Well done, but its a bit easier if you post it like this:

Code:
-----BEGIN BITCOIN SIGNED MESSAGE-----
I am iamaruf. owner of this address. 27-07-2017
-----BEGIN SIGNATURE-----
1MaRUFhkrKjcUwvEsBMBLGoD27sXdHokdy
HHHBrBuxhbWCzh5ldCyws7zsjJL7829GORqaOw63T24hWAIJilJ5/2ZuRqx7HuxDKssix6uEuKSDMUcGXPuPhxc=
-----END BITCOIN SIGNED MESSAGE-----

Im not really here, its just your imagination.
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July 27, 2017, 09:43:47 PM
 #513

-----BEGIN BITCOIN SIGNED MESSAGE-----

I am iamaruf. owner of this address. 27-07-2017

-----BEGIN SIGNATURE-----

< 1MaRUFhkrKjcUwvEsBMBLGoD27sXdHokdy >

< HHHBrBuxhbWCzh5ldCyws7zsjJL7829GORqaOw63T24hWAIJilJ5/2ZuRqx7HuxDKssix6uEuKSDMUcGXPuPhxc= >

-----END BITCOIN SIGNED MESSAGE-----

Well done, but its a bit easier if you post it like this:

Code:
-----BEGIN BITCOIN SIGNED MESSAGE-----
I am iamaruf. owner of this address. 27-07-2017
-----BEGIN SIGNATURE-----
1MaRUFhkrKjcUwvEsBMBLGoD27sXdHokdy
HHHBrBuxhbWCzh5ldCyws7zsjJL7829GORqaOw63T24hWAIJilJ5/2ZuRqx7HuxDKssix6uEuKSDMUcGXPuPhxc=
-----END BITCOIN SIGNED MESSAGE-----

Edited Sir,Would you please suggest me a desktop wallet which Support private key. Thanks.

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July 29, 2017, 07:42:39 PM
 #514

-----BEGIN BITCOIN SIGNED MESSAGE-----
i 'm prince. 29.07.2017
-----BEGIN SIGNATURE-----
1PRinCeXWg6vJgyZCNnsB5CJfU8hpmUKVy
HE7CRLP3FexWDMxHRw9q33s+fbCdBA7MDaSl4Y6or6f5FmCcUPwu4hcP5jzI7LKaaP7EaPkgoTRNfl05JeUiBt8=
-----END BITCOIN SIGNED MESSAGE-----

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July 30, 2017, 03:06:05 AM
 #515

Hi! I am using coins.ph . How can I sign a message using it?
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July 30, 2017, 03:36:04 AM
 #516

Hi! I am using coins.ph . How can I sign a message using it?
Well i think it's not possible to do that, you basically do not own your private key and coins.ph it's just an exchange wallet.
Better sign a message using address that you hold/provide the private key as well.

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July 30, 2017, 05:03:21 AM
Last edit: July 31, 2017, 01:28:47 PM by monsterman
 #517

i try to click on signature  with my address at coinbase,nothing happens even after double clicks
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July 30, 2017, 05:21:18 AM
 #518

i try to sign in with my address at coinbase,nothing happens even after double clicks
You need to wait because it is normally a few seconds to wait until it appear or if the signature already appears copy it right after .If it not works try signing in different browser .I hope it helps.

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July 30, 2017, 05:35:54 AM
 #519

Hi! I am using coins.ph . How can I sign a message using it?
Well i think it's not possible to do that, you basically do not own your private key and coins.ph it's just an exchange wallet.
Better sign a message using address that you hold/provide the private key as well.
Okay. Thank you for your reply.
I didn't have idea before that I cannot sign messages when using coins.ph.
I guess I have to use something like an app from blockchain wallet? Is it possible with that?
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July 30, 2017, 06:25:02 AM
 #520

Hi! I am using coins.ph . How can I sign a message using it?
Well i think it's not possible to do that, you basically do not own your private key and coins.ph it's just an exchange wallet.
Better sign a message using address that you hold/provide the private key as well.
Okay. Thank you for your reply.
I didn't have idea before that I cannot sign messages when using coins.ph.
I guess I have to use something like an app from blockchain wallet? Is it possible with that?
No , you can't find and signed message in app. Open it in a browser ,you can also sign a message with other wallets not only blockchain . Coins.ph doesn't support any signed message feature .Read the OP post in the firet page and follow the steps .

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