How to sign a message?!

[DireWolfM14]

Someone quote and verify this for me?

-----BEGIN BITCOIN SIGNED MESSAGE-----
Hi, This is HiDevin on BTCTalk and it's 8/2/18
-----BEGIN SIGNATURE-----
1KoFPRMnegmvGCPef1YNienLh1wy71UmRc
IGjLVlWHKaQaClF4+HWnt0t9xK1Mb54iz/hUv33shY11DvxuRqcnZXbanaZPUNcMtdPz9/I+inlsly7O5fDFXfU=
-----END BITCOIN SIGNED MESSAGE-----

Quoted and Verified.

[BTCforJoe]

Someone quote and verify this for me?

-----BEGIN BITCOIN SIGNED MESSAGE-----
Hi, This is HiDevin on BTCTalk and it's 8/2/18
-----BEGIN SIGNATURE-----
1KoFPRMnegmvGCPef1YNienLh1wy71UmRc
IGjLVlWHKaQaClF4+HWnt0t9xK1Mb54iz/hUv33shY11DvxuRqcnZXbanaZPUNcMtdPz9/I+inlsly7O5fDFXfU=
-----END BITCOIN SIGNED MESSAGE-----

You may also want to post your signature to be quoted, verified, and archived in the following thread: Stake your bitcoin address here

That's generally the thread that staff will use to find your archived post when restoring an account. Make sure not to edit your post once you make it in that thread.

[enterprevic2]

Hello everyone here, Pls I lost my accounts some months ago and now I'm trying to recover it, although I didn't stake my bitcoin address, I posted in some signature campaigns before I lost the account and now I've learnt that I need to sign messages using that address, which way do I go to recover the account

[DireWolfM14]

Hello everyone here, Pls I lost my accounts some months ago and now I'm trying to recover it, although I didn't stake my bitcoin address, I posted in some signature campaigns before I lost the account and now I've learnt that I need to sign messages using that address, which way do I go to recover the account

Step 1. https://bitcointalk.org/index.php?topic=990345.msg10775516#msg10775516


Step 2. https://bitcointalk.org/index.php?topic=497545.msg5473531#msg5473531

[enterprevic2]

Hello everyone here, Pls I lost my accounts some months ago and now I'm trying to recover it, although I didn't stake my bitcoin address, I posted in some signature campaigns before I lost the account and now I've learnt that I need to sign messages using that address, which way do I go to recover the account

Step 1. https://bitcointalk.org/index.php?topic=990345.msg10775516#msg10775516


Step 2. https://bitcointalk.org/index.php?topic=497545.msg5473531#msg5473531

Thanks a lot I really appreciate, I've sent messages to the profiles of the Admins and I'm awaiting replies. Thanks once again

[SFR10]

wallet wirex 3GmBtLSt6AJGAgw18DiFGsgyoasYzwwaQX

how i get this sign

You can't (I just checked, there's no sign & verify feature in wirex).
Switch to a proper wallet (e.g. "Electrum").

[crypto_trader#43xzEXrP]

Is here any C++ and JavaScript programmers (who understand C++ syntax)?
If yes, how to fix this: https://github.com/username1565/brainwallet.github.io/issues/1

Wanted to got here: https://username1565.github.io/brainwallet.github.io/#verify
the working verification of signature
for messages, that was been signed, using vertcoin-qt.exe.

But this not working with compressed and uncompressed keys and addresses all another altcoins.

[emmasechen]

Hello everyone, my email has been Hacked. Can I change my email by bitcoin message?
sorry, i mean i have bitcoin in freebitcoin.io, when i withdrow my bitcoin, he will send a confirm email. but i can’t receive the email. The staff of bitcoin.io tell me to see this Forum. But i still don’t know how to do. please help me, Think a lot.

[DdmrDdmr]

Hello everyone, my email has been Hacked. Can I change my email by bitcoin message?

Do you mean your personal email, your Bitcointalk account or both?

If it's only your email that has been hacked, then that is a thing to resolve between you and your email provider, although you should likely change your associated email on the account sites you access. Specifically, if you can still log into Bitcointalk, then it is probably best to change the email on your profile (for this you do not need to send a signed message unless you mess-up and end-up with a locked account). I would read through @sncc’s [Guide] Bitcointalk account security. 

If you have lost control of your Bitcointalk account, then read through Recovering hacked/lost accounts and Account recoveries are moving again.

[roptoshambrella]

Thanks for topic.
A new beginning a safe beginning

-----BEGIN BITCOIN SIGNED MESSAGE-----
This is address of roptoshambrella btalk account. This account can not be sold or handovered someoneelse without a signed message from this address. Date : 22/01/2019
-----BEGIN SIGNATURE-----
14zcFLX2vq6ZyTKysf5TDCbhC75m1rDDzV
IKwYPIA8UHazGZSjDMHCMfVKFGAT+472y9rGkoQwPOMT/ED/QEpHwFPerPZXWGuvJ33IyDhdjxVYD8ahiF9EwgM=
-----END BITCOIN SIGNED MESSAGE-----

[snipie]

Thanks for topic.
A new beginning a safe beginning

-----BEGIN BITCOIN SIGNED MESSAGE-----
This is address of roptoshambrella btalk account. This account can not be sold or handovered someoneelse without a signed message from this address. Date : 22/01/2019
-----BEGIN SIGNATURE-----
14zcFLX2vq6ZyTKysf5TDCbhC75m1rDDzV
IKwYPIA8UHazGZSjDMHCMfVKFGAT+472y9rGkoQwPOMT/ED/QEpHwFPerPZXWGuvJ33IyDhdjxVYD8ahiF9EwgM=
-----END BITCOIN SIGNED MESSAGE-----

Verified successfully your message for you :
https://brainwalletx.github.io/#verify?vrAddr=14zcFLX2vq6ZyTKysf5TDCbhC75m1rDDzV&vrMsg=This%20is%20address%20of%20roptoshambrella%20btalk%20account.%20This%20account%20can%20not%20be%20sold%20or%20handovered%20someoneelse%20without%20a%20signed%20message%20from%20this%20address.%20Date%20%3A%2022%2F01%2F2019&vrSig=IKwYPIA8UHazGZSjDMHCMfVKFGAT%2B472y9rGkoQwPOMT%2FED%2FQEpHwFPerPZXWGuvJ33IyDhdjxVYD8ahiF9EwgM%3D

[RapTarX]

hello and neilson need to change my email to simtelecomprovedor@gmail.com

1DPXrBkYsSXmGQc8hwqssqWTxMKXrB5zss

Your post isn't clear. What do you mean? Do you want to change your email on this account? In that case, click on profile and go to "Account Related Setting", you will get the option to change the email.

[mjammer]

Hi Everyone,

I'm just learning about this Bitcoin Signature thing. I've read Shorena's thread tutorial from the beginning and want to go ahead and sign a message and have it verified. I'm kinda confused on which Address to use. Do I just use one from my list?  I'm using Electrum as my wallet. Also, do I just copy and paste the completed signed message from the Electrum page here?

Thanks.

[Kavelj22]

Yes, just choose one address from the list to sign a message from it. It's a very friendly use in Electrum on sign/verify messages.

Yes, you have to copy and paste the following three elements so another user can verify it:
- Signed message.
- Address used.
- Signature.

Don't forget to add actual date to your message; it's the proof that you just did it now, not in the past. This is just a recommendation, not a must-do.

[tbct_mt2]

I'm just learning about this Bitcoin Signature thing. I've read Shorena's thread tutorial from the beginning and want to go ahead and sign a message and have it verified. I'm kinda confused on which Address to use. Do I just use one from my list?  I'm using Electrum as my wallet. Also, do I just copy and paste the completed signed message from the Electrum page here?

To sign a message, you can use any address in your Electrum wallet to do it. However, before signing a message, you should remember to back up seeds of your wallet for later recovery. It sounds ridiculous if you sign a message from a wallet that you don't have control of its seeds. Then, in worst situation (such as computer broken) the sign message has zero value for your account here.
Moreover, if you have more than one devices, I suggest you to sign at least 2 messages from two different wallets - that stored on two devices. It is the way to decentralize risks of losing wallet control from technical issues of your devices and your backups.
Note:
- Don't include email in your message (to avoid phishing links later)
- Place to sign your message: Stake your bitcoin address here. Please use the format in the OP of that topic.

[Kavelj22]

this would help us also claim some of our airdrop rewards as these days some project require us to do that to prove ownership of the address.

Nowadays airdrops become with BTC adresses !!!!
I think you are "somehow" mistaken here. We are talking about how to sign a message using your BTC address within your BTC wallet.
It's almost possible to sign messages from altcoin addresses but it's not the topic here. May be you should look on how to sign a message using MetaMask or MyEtherWallet.

[mjammer]

I'm just learning about this Bitcoin Signature thing. I've read Shorena's thread tutorial from the beginning and want to go ahead and sign a message and have it verified. I'm kinda confused on which Address to use. Do I just use one from my list?  I'm using Electrum as my wallet. Also, do I just copy and paste the completed signed message from the Electrum page here?

To sign a message, you can use any address in your Electrum wallet to do it. However, before signing a message, you should remember to back up seeds of your wallet for later recovery. It sounds ridiculous if you sign a message from a wallet that you don't have control of its seeds. Then, in worst situation (such as computer broken) the sign message has zero value for your account here.
Moreover, if you have more than one devices, I suggest you to sign at least 2 messages from two different wallets - that stored on two devices. It is the way to decentralize risks of losing wallet control from technical issues of your devices and your backups.
Note:
- Don't include email in your message (to avoid phising links later)
- Place to sign your message: Stake your bitcoin address here. Please use the format in the OP of that topic.

Yes, just choose one address from the list to sign a message from it. It's a very friendly use in Electrum on sign/verify messages.

Yes, you have to copy and paste the following three elements so another user can verify it:
- Signed message.
- Address used.
- Signature.

Don't forget to add actual date to your message; it's the proof that you just did it now, not in the past. This is just a recommendation, not a must-do.

Hello again,

Ok I followed everything to the letter, Wrote a specific message in that section with date and time, Inserted one of my bitcoin addresses in the the Address section, proceeded to the Signature section of my Electrum messaged and clicked Sign, got the pop up window requesting my password, I entered my password and clicked, "ok", but instead of adding the signature, I got this pop up.


"Cannot sign messages with this type of address: p2sh
Signing with an address actually means signing with the corresponding private key, and verifying with the corresponding public key. The address you have entered does not have a unique public key, so these operations cannot be performed.
The operation is undefined. Not just in Electrum, but in general."


I'm using one of my Addresses that says "receiving" just to the left of the Address. There are about 20 of them and I used one that has not been previously used before.

Also, at the bottom of the list of Address, there are 6 that say "Change" to the left of the Addresses instead of  "Receiving".

I tried one of those and got the same pop up window as before.

Am I missing something here or entering something incorrectly? I have no idea what "p2sh" means.

I'm using Electrum version 3.3.4 and have had no problems receiving 3 different deposits of bitcoin and my balance total is showing correctly.

Any help would be greatly appreciated.
Thanks again. 

[HCP]

"Cannot sign messages with this type of address: p2sh
Signing with an address actually means signing with the corresponding private key, and verifying with the corresponding public key. The address you have entered does not have a unique public key, so these operations cannot be performed.
The operation is undefined. Not just in Electrum, but in general."

P2SH = Pay to Script Hash... These addresses will start with a "3".

As per the error message, P2SH addresses aren't necessarily created based on a single "private/public key"... Because of this, you cannot sign a message using these addresses as there is not public/private key to be able to sign the message with.


Given that you're using Electrum, I would guess that you're either using a MultiSig wallet or, more likely, a "2FA" wallet (which is a special type of multisig)... these are actually created by combining multiple keys together to create the P2SH scripts.

You need to use "Legacy" ("1"-type addresses) or Native Segwit (aka bech32 aka "bc1"-type addresses) to be able to sign messages.

[mjammer]

"Cannot sign messages with this type of address: p2sh
Signing with an address actually means signing with the corresponding private key, and verifying with the corresponding public key. The address you have entered does not have a unique public key, so these operations cannot be performed.
The operation is undefined. Not just in Electrum, but in general."

P2SH = Pay to Script Hash... These addresses will start with a "3".

As per the error message, P2SH addresses aren't necessarily created based on a single "private/public key"... Because of this, you cannot sign a message using these addresses as there is not public/private key to be able to sign the message with.


Given that you're using Electrum, I would guess that you're either using a MultiSig wallet or, more likely, a "2FA" wallet (which is a special type of multisig)... these are actually created by combining multiple keys together to create the P2SH scripts.

You need to use "Legacy" ("1"-type addresses) or Native Segwit (aka bech32 aka "bc1"-type addresses) to be able to sign messages.

Hi and thanks for your reply.

When I initially download and set up my wallet, I did set it up as "2FA", which is 2 factor authentication I believe, and used the Google Authentication app with the QR type code. My old computer hard drive crashed and I used my 12 word seed to recover my wallet and update to to the latest version.

When I set up my wallet up on my new computer, I got a message stating that 2 factor Authentication (2FA) was turned off or not available because this wallet was recovered from seed.

Can you explain to me what I need to do to use "Legacy" or "Native Segwit" type Addresses to get this message signature thing to work?

Thanks.     

[HCP]

Basically, you would need to create a completely new wallet... with a completely new seed.

"File -> New\Restore -> Standard Wallet -> Create a new seed"

You can choose "SegWit" or "Legacy" during setup:


Be aware that using Native SegWit (aka Bech32 aka "bc1") addresses *may* cause issues (as noted on the dialog) with some services and wallets (block explorers, exchanges, gambling sites etc) that do NOT as yet support "bc1" addresses

Using "Legacy" addresses means you won't have any compatibility issues, but can result in slightly "larger" transactions that may mean you pay more in transaction fees.