How to sign a message?! - page 21. | Bitcointalksearch.org

AnfisKatechkin

full member

Activity: 266

Merit: 107

I got BTC-e'd... I got WEXed...

Quote from: vh on June 27, 2017, 08:57:43 AM

Quote from: AnfisKatechkin on June 27, 2017, 08:48:49 AM

I tried to sign message with Blockchain.info (it has no such an option for imported addresses in More options), Electrum, Mycelium but I can't... I just want to prove that I own my btc address and restore an access to an account. What's wrong with it, guys? My address is 1KM8gZsEtLeyG8j4vhmRvvp41Nf5Wmnq4G

How I can import this address to anywhere?..Please, help!

You only own the address if you have control over the private key associated with it. The wallet that generated that address is where your private key is kept should have an ability to sign, otherwise you need to move your key in order to do so. Be carefully doing so.

I created this address using bitaddress.org. There is no option to sign a message. I have private key and password but I don't know what to do... Services do not let me sign a message.

vh

hero member

Activity: 699

Merit: 666

Quote from: AnfisKatechkin on June 27, 2017, 08:48:49 AM

I tried to sign message with Blockchain.info (it has no such an option for imported addresses in More options), Electrum, Mycelium but I can't... I just want to prove that I own my btc address and restore an access to an account. What's wrong with it, guys? My address is 1KM8gZsEtLeyG8j4vhmRvvp41Nf5Wmnq4G

How I can import this address to anywhere?..Please, help!

You only own the address if you have control over the private key associated with it. The wallet that generated that address is where your private key is kept should have an ability to sign, otherwise you need to move your key in order to do so. Be carefully doing so.

AnfisKatechkin

full member

Activity: 266

Merit: 107

I got BTC-e'd... I got WEXed...

I tried to sign message with Blockchain.info (it has no such an option for imported addresses in More options), Electrum, Mycelium but I can't... I just want to prove that I own my btc address and restore an access to an account. What's wrong with it, guys? My address is 1KM8gZsEtLeyG8j4vhmRvvp41Nf5Wmnq4G
In Electrum I put a "Message" and "Address" after that I press the button "Sign" and nothing happens.

How I can import this address to anywhere?..Please, help!

TetraFugolini

member

Activity: 78

Merit: 10

Linux Geek

Quote from: wa1rus on June 23, 2017, 02:43:00 AM

Thank you very much this is very interesting for me. I found about Bitcoin very recently and bought it for the first time last week..

I didn't know you can sign message! It sounds useful, but in what kind of situation would it be used for?

Well for instance byteball altcoins are distributed for free to btc owners and in order to prove ownership of btc you have to sign a message and send them the signature.
Signing is easy with mycelium Android wallet, no need for complicated processes only two button taps.

shorena

copper member

Activity: 1498

Merit: 1528

No I dont escrow anymore.

Quote from: wa1rus on June 23, 2017, 02:43:00 AM

Thank you very much this is very interesting for me. I found about Bitcoin very recently and bought it for the first time last week..

I didn't know you can sign message! It sounds useful, but in what kind of situation would it be used for?

The situations where you read more than just the title. Like the first paragraph is dedicated to why this might be usefull for you.

wa1rus

newbie

Activity: 4

Merit: 0

Thank you very much this is very interesting for me. I found about Bitcoin very recently and bought it for the first time last week..

I didn't know you can sign message! It sounds useful, but in what kind of situation would it be used for?

shorena

copper member

Activity: 1498

Merit: 1528

No I dont escrow anymore.

Quote from: Cruxer on June 22, 2017, 09:14:19 PM

technical side of signing a message is quite hard
good thing is many clients offer simple couple clicks solution to this
im reading through this topic to understand it fully but all this cryptography stuff is quite hard

What cryptography stuff?

Quote from: jamyr on June 22, 2017, 03:33:55 AM

First time to try sign a message.

I hope I make this right.

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
Hi, this is jamyr of bitcointalk. signing this message today 6/22/2017 at 08:32 AM Forum time, to show gratitude for the tutorial shorena made.
-----BEGIN SIGNATURE-----
GyE6oo3ol1Ju+BhscqAPENZgx+AULM9qIVcB8LN77LXDcRvlDnVOe5K4IOuBhHXo+gOegYN2z6YgxxPRAIslcuU=
-----END BITCOIN SIGNED MESSAGE-----

Well done, besides the missing address as MZ already pointed out. Thanks for actually reading the thread.

Cruxer

full member

Activity: 184

Merit: 100

Bitcoin FTW!

technical side of signing a message is quite hard
good thing is many clients offer simple couple clicks solution to this
im reading through this topic to understand it fully but all this cryptography stuff is quite hard

Muhammed Zakir

hero member

Activity: 560

Merit: 509

I prefer Zakir over Muhammed when mentioning me!

Quote from: jamyr on June 22, 2017, 03:33:55 AM

First time to try sign a message.

I hope I make this right.

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
Hi, this is jamyr of bitcointalk. signing this message today 6/22/2017 at 08:32 AM Forum time, to show gratitude for the tutorial shorena made.
-----BEGIN SIGNATURE-----
GyE6oo3ol1Ju+BhscqAPENZgx+AULM9qIVcB8LN77LXDcRvlDnVOe5K4IOuBhHXo+gOegYN2z6YgxxPRAIslcuU=
-----END BITCOIN SIGNED MESSAGE-----

You need to post Bitcoin address used to sign your message.

Edit: Address used to sign above message is 1JAMYRoaPiqK4PStwMpKyWH3S5x6DvHRM. https://bitcointalksearch.org/topic/m.19706342

jamyr

sr. member

Activity: 1764

Merit: 373

<------

First time to try sign a message.

I hope I make this right.

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
Hi, this is jamyr of bitcointalk. signing this message today 6/22/2017 at 08:32 AM Forum time, to show gratitude for the tutorial shorena made.
-----BEGIN SIGNATURE-----
GyE6oo3ol1Ju+BhscqAPENZgx+AULM9qIVcB8LN77LXDcRvlDnVOe5K4IOuBhHXo+gOegYN2z6YgxxPRAIslcuU=
-----END BITCOIN SIGNED MESSAGE-----

Postalgia

newbie

Activity: 48

Merit: 0

Thank you this is very informative!

It is unfortunate that blockchain.info does not offer signing messages from new address created in the wallet (only for imported addresses).. which does seem kinda strange..

shorena

copper member

Activity: 1498

Merit: 1528

No I dont escrow anymore.

Quote from: Wekkel on June 13, 2017, 04:58:46 AM

I cannot import a wallet address in the latest Electrum with a '5' private key. Importing an 'L' private key does work.

I understand that, but I just did it so it might be something on your end not with the wallet. Maybe ask in the electrum section about the specifics.

Wekkel

legendary

Activity: 3108

Merit: 1531

yes

I cannot import a wallet address in the latest Electrum with a '5' private key. Importing an 'L' private key does work.

[edit]
Strangely, I am able to import the '5' key you used as an example. I need to check this further.

shorena

copper member

Activity: 1498

Merit: 1528

No I dont escrow anymore.

Quote from: Wekkel on June 12, 2017, 05:12:22 PM

Quote from: shorena on June 12, 2017, 12:19:55 AM

Quote from: Wekkel on June 05, 2017, 02:43:48 PM

How can you sign a message if you have the BTC address (uncompressed public) and the private key (starting with '5') without importing the private key in a wallet (is software available)?

IIRC there are webpages that allow this, but I didnt like them because they could easily steal your private key. Other than that, electrum is software that can help you here, you just have to create a wallet with that specific private key. If thats to close to 'importing' for you, I dont know anything else.

As a follow up: Electrum does not support private keys starting with '5' (the 'L' variant is still supported). In the end, I indeed did this via a webpage, but running locally in a Virtual Machine without networking and deleting everything afterwards

Cant confirm.

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
I cant confirm that electrum no longer allows importing uncompressed keys. This message was signed using electrum 2.8.3 and the private key: 5JD1YosAJVHEtiks6x7xq8rhjHaBPMrxr3xYUVpj2uQF7mbb4RQ
shorena 2017/06/13
-----BEGIN SIGNATURE-----
1PWirAw5ZBQLBHNpsRPdw1HQRWmMHyCheG
HGSo45uowZk8CA9Gm9aWefEb3Cv7N3WN1oL7lBp26jTSAG5IEEwGfmD/gXTqumoMH5/qDQPyZFUT6TLCoxQVfvU=
-----END BITCOIN SIGNED MESSAGE-----

Wekkel

legendary

Activity: 3108

Merit: 1531

yes

Quote from: shorena on June 12, 2017, 12:19:55 AM

Quote from: Wekkel on June 05, 2017, 02:43:48 PM

How can you sign a message if you have the BTC address (uncompressed public) and the private key (starting with '5') without importing the private key in a wallet (is software available)?

IIRC there are webpages that allow this, but I didnt like them because they could easily steal your private key. Other than that, electrum is software that can help you here, you just have to create a wallet with that specific private key. If thats to close to 'importing' for you, I dont know anything else.

As a follow up: Electrum does not support private keys starting with '5' (the 'L' variant is still supported). In the end, I indeed did this via a webpage, but running locally in a Virtual Machine without networking and deleting everything afterwards

sd141631

newbie

Activity: 2

Merit: 0

First of all, thank for the post, I really had no idea on how to go about this. Especially as the interface on blockchain.info changed into the new one.
Found it much easier to do after reading this thread.
Thanks!

shorena

copper member

Activity: 1498

Merit: 1528

No I dont escrow anymore.

Quote from: Wekkel on June 05, 2017, 02:43:48 PM

How can you sign a message if you have the BTC address (uncompressed public) and the private key (starting with '5') without importing the private key in a wallet (is software available)?

IIRC there are webpages that allow this, but I didnt like them because they could easily steal your private key. Other than that, electrum is software that can help you here, you just have to create a wallet with that specific private key. If thats to close to 'importing' for you, I dont know anything else.

jaime77

newbie

Activity: 10

Merit: 0

First of all, thank for the post, I really had no idea on how to go about this. Especially as the interface on blockchain.info changed into the new one.
Found it much easier to do after reading this thread.
Thanks!

arransiv

sr. member

Activity: 420

Merit: 250

Does anybody know how to sign a message from an old wallet.Because apparently I can't do it on blockchain.info as I have to import an address and this is taking too long for now.The other wallets I can sign from a new wallet but how I do it from an old one-for example the one in my blockhain.info account

Wekkel

legendary

Activity: 3108

Merit: 1531

yes

How can you sign a message if you have the BTC address (uncompressed public) and the private key (starting with '5') without importing the private key in a wallet (is software available)?

Topic: How to sign a message?! - page 21. (Read 141621 times)