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Topic: How to sign a message?! (Read 142189 times)

sHeRiLyN1618

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Re: How to sign a message?!

May 13, 2017, 02:29:28 AM

#461

Quote from: Jeremycoin on May 12, 2017, 07:51:47 PM

Quote from: apoorvlathey on May 12, 2017, 04:53:44 PM

Quote from: shorena on May 12, 2017, 04:45:24 PM

Quote from: apoorvlathey on May 11, 2017, 05:29:36 PM

Quote from: Fraxinus on May 11, 2017, 05:36:51 AM

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!

If you make a new address in the new blockchain also do not work for sign message. It actually work for imported address. I do not know why the blockchain make this not available to sign message there with new address.

steampunkz

Sr. Member

Activity: 1162
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Re: How to sign a message?!

May 13, 2017, 03:13:28 AM

#462

Thanks for this guide and information. I've been thinking and looking for this topic for a while now. What are these signed message that are so important? when trading or lending, etc in btc Now i know.. Sorry I am really a newbie in kind of these stuffs, There so many things that I don't know about bitcoin, I will learn more! Shocked

www.58jili.com/signUp?pid=560jili

shorena (OP)

Copper Member
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Re: How to sign a message?!

May 13, 2017, 05:23:36 AM

#463

Quote from: apoorvlathey on May 12, 2017, 04:53:44 PM

-snip-
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

Done, thanks!

Quote from: sHeRiLyN1618 on May 13, 2017, 02:29:28 AM

Quote from: Jeremycoin on May 12, 2017, 07:51:47 PM

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

Add this as well. Thanks!

Im not really here, its just your imagination.

freemanjackal

Sr. Member

Activity: 378
Merit: 250

Re: How to sign a message?!

May 29, 2017, 03:00:28 AM

#464

could i use pgp to sign a message usign my address as public key for the receiver..?

shorena (OP)

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Re: How to sign a message?!

May 30, 2017, 04:22:21 AM

#465

Quote from: freemanjackal on May 29, 2017, 03:00:28 AM

could i use pgp to sign a message usign my address as public key for the receiver..?

No, Bitcoin Addresses (256 Bit) and PGP-Keys (usually 2048+ bit now) have different key-lengths.

Im not really here, its just your imagination.

endenada

Newbie

Activity: 42
Merit: 0

Re: How to sign a message?!

May 30, 2017, 01:55:30 PM

#466

Quote from: shorena on May 30, 2017, 04:22:21 AM

Quote from: freemanjackal on May 29, 2017, 03:00:28 AM

could i use pgp to sign a message usign my address as public key for the receiver..?

No, Bitcoin Addresses (256 Bit) and PGP-Keys (usually 2048+ bit now) have different key-lengths.

thanks, shorena, this thread is completely new stuff to me, i am learning this forum and if you have to guide me and us just make a post about your review of this forum, i found some very interesting segments and will text them soon

freemanjackal

Sr. Member

Activity: 378
Merit: 250

Re: How to sign a message?!

May 30, 2017, 10:27:25 PM

#467

Quote from: shorena on May 30, 2017, 04:22:21 AM

Quote from: freemanjackal on May 29, 2017, 03:00:28 AM

could i use pgp to sign a message usign my address as public key for the receiver..?

No, Bitcoin Addresses (256 Bit) and PGP-Keys (usually 2048+ bit now) have different key-lengths.

thank you for your time, and your answer

ImHash

Hero Member

Activity: 924
Merit: 506

Re: How to sign a message?!

June 03, 2017, 07:07:13 PM

#468

Thanks a lot Kiss

for this useful tutorial, actually I signed a message in order to post it on forum for the first time even though I did sign a few in web wallets but I learned the forum format from this thread, here you can check it out.

Wekkel

Legendary

Activity: 3122
Merit: 1538

yes

Re: How to sign a message?!

June 05, 2017, 07:43:48 PM

#469

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)?

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arransiv

Sr. Member

Activity: 420
Merit: 250

Re: How to sign a message?!

June 06, 2017, 02:47:20 PM

#470

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

jaime77

Newbie

Activity: 10
Merit: 0

Re: How to sign a message?!

June 10, 2017, 01:04:29 PM

#471

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 (OP)

Copper Member
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Activity: 1498
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Re: How to sign a message?!

June 12, 2017, 05:19:55 AM

#472

Quote from: Wekkel on June 05, 2017, 07:43:48 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.

Im not really here, its just your imagination.

sd141631

Newbie

Activity: 2
Merit: 0

Re: How to sign a message?!

June 12, 2017, 11:35:21 AM

#473

Wekkel

Legendary

Activity: 3122
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yes

Re: How to sign a message?!

June 12, 2017, 10:12:22 PM

#474

Quote from: shorena on June 12, 2017, 05:19:55 AM

Quote from: Wekkel on June 05, 2017, 07:43:48 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)?

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

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shorena (OP)

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Re: How to sign a message?!

June 13, 2017, 07:11:23 AM

#475

Quote from: Wekkel on June 12, 2017, 10:12:22 PM

Quote from: shorena on June 12, 2017, 05:19:55 AM

Quote from: Wekkel on June 05, 2017, 07:43:48 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)?

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-----

Im not really here, its just your imagination.

Wekkel

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Activity: 3122
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yes

Re: How to sign a message?!

June 13, 2017, 09:58:46 AM

#476

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.

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► ► UPGRADE NOW! ◄ ◄

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.Working NonStop.
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shorena (OP)

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Re: How to sign a message?!

June 13, 2017, 10:03:31 AM

#477

Quote from: Wekkel on June 13, 2017, 09:58:46 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.

Im not really here, its just your imagination.

Postalgia

Newbie

Activity: 48
Merit: 0

Re: How to sign a message?!

June 14, 2017, 01:00:28 PM

#478

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..

jamyr

Sr. Member

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Re: How to sign a message?!

June 22, 2017, 08:33:55 AM

#479

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-----

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Muhammed Zakir

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Re: How to sign a message?!

June 22, 2017, 11:03:58 AM
Last edit: June 22, 2017, 12:19:35 PM by Muhammed Zakir

#480

Quote from: jamyr on June 22, 2017, 08:33:55 AM

First time to try sign a message.

I hope I make this right.

Code:

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

Edit: Address used to sign above message is 1JAMYRoaPiqK4PStwMpKyWH3S5x6DvHRM. https://bt.irlbtc.com/view/996318.msg19706342#msg19706342

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