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Author Topic: How to sign a message?!  (Read 110795 times)
shorena
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February 04, 2016, 05:36:51 PM
 #281

Thanks a lot, fully understood now.
What was you have been understood? Do you mean you have been understood how to make loans?  Grin

They asked where the signature comes from a few posts ago on the previous page. As there are only pictures one might get the conclusion that you have to copy the signature from somewhere instead of generating it with a click.
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BitcoinSupremo
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February 04, 2016, 07:45:43 PM
 #282

Thanks a lot, fully understood now.
What was you have been understood? Do you mean you have been understood how to make loans?  Grin

No I don't need loan, I have a normal amount of BTC but yeah I fully learned how to sign a message to join some signature.

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February 10, 2016, 06:02:07 PM
 #283

Thanks a lot, fully understood now.
What was you have been understood? Do you mean you have been understood how to make loans?  Grin

No I don't need loan, I have a normal amount of BTC but yeah I fully learned how to sign a message to join some signature.

Show us. From what you wrote here I have the feeling you confused signed message and signature campaigns.

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February 10, 2016, 06:40:50 PM
 #284

I have not confused it. As you can see I am already at a signature now. But some signatures I have seen here they need a signed message for persons to be accepted. Thats why I learned how to sign a message and also to join signatures, nothing confusing. I fully understood like I said before.

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February 10, 2016, 06:55:59 PM
 #285

I have not confused it. As you can see I am already at a signature now. But some signatures I have seen here they need a signed message for persons to be accepted. Thats why I learned how to sign a message and also to join signatures, nothing confusing. I fully understood like I said before.

Nice, so you will sign me a message with the address from your profile then?
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February 10, 2016, 08:09:14 PM
 #286

I don't know if I have done it right but here it is.

Address:
1DADerDP2D9bpDmaBoJzaniKTVCTRratft

Message is :
Hi this is BitcoinSupremo in her first test to sign a
message. Hope I have done it right.
Its been done using Multibit Classic.

Signature after signing the message is:
IKbtXvyO6f5x+z3BgLVxZgHxSoUXxPJge7K9+Bq+UYp/T+rG0Kw/796M1xsbalNzZk64BFSAB8uC9DHl+WbpyEU=

Have I done something wrong ?

Message was not signed in by the specified address ?

What I am doing wrong.



Finally figured it out.
Here it is.
Address:
1DADerDP2D9bpDmaBoJzaniKTVCTRratft
Message:
Hi
BitcoinSupremo
From
Bitcointalk
Signature:
H4YXOyIbxxIFNGBejJiuNsl0UGVSulE3fczOl4FY2K9cFQcamMeA6PNfH67rDhvDaoIzSVONmh04mjJ 8xELZ7bY=

This message was signed by the specified address.

shorena
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February 10, 2016, 08:17:39 PM
 #287

I don't know if I have done it right but here it is.

Address:
1DADerDP2D9bpDmaBoJzaniKTVCTRratft

Message is :
Hi this is BitcoinSupremo in her first test to sign a
message. Hope I have done it right.
Its been done using Multibit Classic.

Signature after signing the message is:
IKbtXvyO6f5x+z3BgLVxZgHxSoUXxPJge7K9+Bq+UYp/T+rG0Kw/796M1xsbalNzZk64BFSAB8uC9DHl+WbpyEU=

Have I done something wrong ?

Message was not signed in by the specified address ?

What I am doing wrong.

Electrum says its good. Maybe you missed the trailing linebreak when trying to verify?

Code:
-----BEGIN BITCOIN SIGNED MESSAGE-----
Hi this is BitcoinSupremo in her first test to sign a
message. Hope I have done it right.
Its been done using Multibit Classic.

-----BEGIN SIGNATURE-----
1DADerDP2D9bpDmaBoJzaniKTVCTRratft
IKbtXvyO6f5x+z3BgLVxZgHxSoUXxPJge7K9+Bq+UYp/T+rG0Kw/796M1xsbalNzZk64BFSAB8uC9DHl+WbpyEU=
-----END BITCOIN SIGNED MESSAGE-----




Thanks for showing me. As with many other things, its better to just make a test and see if it works than only read about it.

-snip-
Finally figured it out.
Here it is.
Address:
1DADerDP2D9bpDmaBoJzaniKTVCTRratft
Message:
Hi
BitcoinSupremo
From
Bitcointalk
Signature:
H4YXOyIbxxIFNGBejJiuNsl0UGVSulE3fczOl4FY2K9cFQcamMeA6PNfH67rDhvDaoIzSVONmh04mjJ 8xELZ7bY=

This message was signed by the specified address.

Verified as well. Smiley
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March 08, 2016, 05:36:47 AM
 #288

I made the idiotic decision to try the Blockchain Beta wallet, and for the life of me, I cannot find anywhere to sign a message with my address. Does anyone have information on how to sign a message with the Beta version of the wallet? Unfortunately, Blockchain does not allow you to revert back to the old wallet once you have tried the beta.

Thanks in advance!

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March 08, 2016, 07:43:43 AM
 #289

I made the idiotic decision to try the Blockchain Beta wallet, and for the life of me, I cannot find anywhere to sign a message with my address. Does anyone have information on how to sign a message with the Beta version of the wallet? Unfortunately, Blockchain does not allow you to revert back to the old wallet once you have tried the beta.

Thanks in advance!

AFAIK you cant. There are many crucial options not available on their new beta wallet. There seems to be a hack to get your private key however[1]. I have not tried it though. It would allow you to import into a different wallet, like electrum that you can sign a message with.

[1] https://twitter.com/coin_artist/status/706914092326502400
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March 08, 2016, 08:33:17 AM
 #290

Here are some of my understanding about signing a message with bitcoin address.
Kindly correct me if I misunderstood anything .

1. Basically bitcoin address has 2 3 parts :
     a. Public address to share
     b. Private key to keep secretly
     c. Public key to verify signatures made by the private key.

2. We can derive The 3rd part from a bitcoin address, created by the private key and can be verified with the public key.
     a. This 3rd part is optional
     b. Unlimited number of this kind of 3rd part can be generated
     c. This 3rd part can be associated to some text.
     d. The (version 1) address is the hash of a public key. The public key is part of the signature

3. To generate this 3rd part, we must need the private key of the address.
     a. It is not possible to sign a message with online wallets who does not let access to private key
     b. Online wallets (eg: Xapo or coinbase),
         exchange or gambling deposit address are some example for without private key bitcoin addresses.
         Coinbase allows you to sign a message even though you dont have access to your private keys. They  
         just create the signed message for you.


4. By creating this 3rd part we can prove that we have the private key.
     a. This 3rd part is called as Signature
     a. This Signature is associated with some text, usually the purpose of signature along with time and owner.
     b. signature is unique for the given text and address

5. Purpose: Proves the ownership of bitcoin address.
     a. We can also prove ownership by adding "public note" in sending transaction from an address.
         But it is costly and it has no privacy (can be seen by anyone).

     the public note is a blockchain.info specific thing and not part of the bitcoin network.


@OP,
Thank you very much for your time and corrections.

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shorena
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March 08, 2016, 08:54:05 AM
 #291

Here are some of my understanding about signing a message with bitcoin address.
Kindly correct me if I misunderstood anything .

1. Basically bitcoin address has 2 parts :
     a. Public address to share
     b. Private key to keep secretly

     c. Public key to verify signatures made by the private key.

Private key -> public key -> address (you cant go backwards on this chain!).

2. We can derive a 3rd part from a bitcoin address.
     a. This 3rd part is optional
     b. Unlimited number of this kind of 3rd part can be generated
     c. This 3rd part can be associated to some text.

No you dont derive the signature from the address. Its created by the private key and can be verified with the public key. The (version 1) address is the hash of a public key. The public key is part of the signature. There is however an unlimited number of messages you can sign.

3. To generate this 3rd part, we must need the private key of the address.
     a. It is not possible to sign a message with online wallets who does not let access to private key
     b. Online wallets (eg: Xapo or coinbase),
         exchange or gambling deposit address are some example for without private key bitcoin addresses.

Yes and no. Coinbase allows you to sign a message even though you dont have access to your private keys. The just create the signed message for you.

4. By creating this 3rd part we can prove that we have the private key.
     a. This 3rd part is called as Signature
     b. This Signature is associated with some text, usually the purpose of signature along with time and owner.

Yes, it proves that someone has the private key for the address in question. It is however no proof that they are the only person.
Yes, each signature is unique for the given text and address. It makes sense to include certain information as they are not part of the signature (e.g. a timestamp).

5. Purpose: Prove the ownership of bitcoin address.
     a. We can also prove ownership by adding "public note" in sending transaction from an address.
         But it is costly and it has no privacy (can be seen by anyone).

No, the public note is a blockchain.info specific thing and not part of the bitcoin network. If blockchain.info is down there is no public note. There is also no way to verify a public note. I can create a public note "Whosdaddy" for one of my addresses on blockchain.info. That does not make me you, nor does it mean the address is yours. Its just text set by the owner of the address.

Similarly I can sign a message claiming that I am you, thats why its important to stake your address in the thread in meta if you want to use it to prove ownership over your account.
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March 08, 2016, 10:35:47 AM
 #292

I do not understand everything , but I still try to understand it Smiley
btw thank a lot for your thread, i appreciated it Smiley


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shorena
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March 08, 2016, 11:36:23 AM
 #293

I do not understand everything , but I still try to understand it Smiley
btw thank a lot for your thread, i appreciated it Smiley

Its not as difficult to do than it is to understand. Just try signing a message and see if you can verify it somewhere else or post it here for others to see if they can verify it.
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March 09, 2016, 07:42:17 AM
 #294

Hallo shorena I see your Personal Text https://keybase.io/verify  I've tried to register but do not see further details
I just saw this message on the page keybase.io but did not receive confirmation email and other instructions
Success
We'll let you know when it's your turn.

What should I do next and how long I have to wait. Thank you very much  Smiley

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March 09, 2016, 10:50:02 AM
 #295

Hallo shorena I see your Personal Text https://keybase.io/verify  I've tried to register but do not see further details
I just saw this message on the page keybase.io but did not receive confirmation email and other instructions
Success
We'll let you know when it's your turn.

What should I do next and how long I have to wait. Thank you very much  Smiley

Thats for PGP signatures and AFAIK you need an invite. If you ask here[1] someone might give you one. I dont think I have any yet.

[1] https://bitcointalk.org/index.php?topic=1159946.0
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March 10, 2016, 05:11:57 AM
 #296

Today first time here on this forum and after reading this all very have some good information about this system now just want to ask which wallet is good and easy to use without too much download

Thanks Shorena for this all hard work  Smiley
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March 10, 2016, 05:21:00 AM
 #297

Thats for PGP signatures and AFAIK you need an invite. If you ask here[1] someone might give you one. I dont think I have any yet.
You can join without an invite, but it's gonna take some time.

Quote
We're inviting people constantly.
If you ask now, you'll be #26689 in the alpha queue.
Asking for an invite is certainly the faster option. I've got some myself, so if you're interested just shoot me a quick PM (or ask in the thread, works aswell).

@sho: For invites check here -> https://keybase.io/account/invitations


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shorena
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Activity: 1470
Merit: 1237


No I dont escrow anymore.


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March 10, 2016, 08:44:55 AM
 #298

@Bit1334271

Today first time here on this forum and after reading this all very have some good information about this system now just want to ask which wallet is good and easy to use without too much download

Thanks Shorena for this all hard work  Smiley

If you are looking for a small or slim wallet I would go with the most common ones, Electrum or Multibit HD. There are more and I dont know all though, so maybe take a look here[1] and see if you find something that suits your needs.

[1] https://bitcoin.org/en/choose-your-wallet



@Lutpin

-snip-
@sho: For invites check here -> https://keybase.io/account/invitations

0 as expected.
Zeke2345
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★YoBit.Net★ 350+ Coins Exchange & Dice


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March 11, 2016, 09:17:35 PM
 #299

Code:
-----BEGIN BITCOIN SIGNED MESSAGE-----
This isZeke2345 from bitcointalk.org and today is 2016.03.11
Signing a message from my blockchain.info account.
-----BEGIN SIGNATURE-----
1CKVafRACiTzjZjpLHVgfRj7PdT3df4bxE
IIgLdq9YnxaPy+x2wA3DAGuTjGklv76sV3AhSWABnp80EoBqakvFcpz4Mfeo0T/qLrCoAVT2oixqSm17VkF1sJQ=
-----END BITCOIN SIGNED MESSAGE-----

Can some one confirm I did this right,will try another wallet later tonight.

██████████    YoBit.net - Cryptocurrency Exchange - Over 350 coins
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Lutpin
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unavailable until 08/24.


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March 11, 2016, 09:30:22 PM
 #300

Can some one confirm I did this right,will try another wallet later tonight.
You did this right.


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