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Author Topic: How to sign a message?!  (Read 139561 times)
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February 19, 2021, 08:20:07 AM
 #821

If it's the exchange, you're likely out of luck. They don't provide access to private keys as it is a custodial service, you have no private keys, it's all controlled by coinbase. However, if you're using the their Android/iOS wallet app, you should have the 12 word recovery phrase that can be used in external wallets (like Electrum)... so you can just import the 12 word recovery phrase into a wallet that supports signing messages.
Is there a way to find the 12 seed phrase in Coinbase's android mobile app itself?  I can't see it, maybe because it's limited or not visible when you've done the action like verification.  I can no longer remember that I have copied phrases to recover funds here in case of a mistake, because I know it is associated with the account using the email address.  As far as I know, when they are custodial, they do not give any of the keys or phrases.

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February 20, 2021, 09:39:22 AM
 #822

Sorry i forgot send addres

16DJgExZpTSDZn7p5jEtgN3gNRGrGwY6cv
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February 20, 2021, 11:39:16 AM
Merited by vapourminer (1)
 #823

This is my wallet addres and i have the pv key of this wallet
Pls reset my 2fa
Sorry i forgot send addres

16DJgExZpTSDZn7p5jEtgN3gNRGrGwY6cv
You must contact that exchange or wallet's support or in some cases, the 2FA service provider;
Note: bitcointalk members can't help you reset your 2fa aside from providing guides, this forum is not affiliated to any exchange, wallets or services.

Is there a way to find the 12 seed phrase in Coinbase's android mobile app itself?  I can't see it, maybe because it's limited or not visible when you've done the action like verification.  I can no longer remember that I have copied phrases to recover funds here in case of a mistake, because I know it is associated with the account using the email address.  As far as I know, when they are custodial, they do not give any of the keys or phrases.
Stepping in since you didn't received a reply: Is the wallet named "Coinbase" or "Coinbase Wallet"?
If the latter, you can get it from "Settings Icon->Recovery Phrase"; If 'Coinbase', then there's no way to get the seed phrase since it's a custodial wallet/exchange.

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March 05, 2021, 03:22:57 PM
 #824

I am using coinbase wallet. Can I sign a message from there? I can't see any tutorial for coinbase.
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March 05, 2021, 11:02:23 PM
 #825

I am using coinbase wallet. Can I sign a message from there? I can't see any tutorial for coinbase.
Here is a tutorial on How to sign messages to the Bitcoin address on Coinbase:
https://coins.newbium.com/post/1408-how-to-sign-message-your-bitcoin-address-coinbase

However, it was made about four years ago. I was trying to login into my old account at Coinbase, but it turns out that there is a new KYC policy. I don't know if the tutorial is still applicable or not.

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March 06, 2021, 04:18:22 AM
Merited by vapourminer (1)
 #826

I am using coinbase wallet. Can I sign a message from there? I can't see any tutorial for coinbase.
The app doesn't support signing a message natively but you can import the "recovery phrase" you can get from the 'setting icon' to a wallet that supports BIP39 seed.
I'd suggest Electrum and sign a message using it, your Bitcoin address should appear first in the 'addresses' tab.

Here's a short tutorial:
  • Get your Coinbase Wallet App's "recovery phrase" in the Settings (you need to type your pin), that's the 12-random-words, copy it to a piece of paper.
  • Download Electrum [link] (Stand-Alone if Windows) and I'd recommend you to verify its signature [tutorial], then launch it.
  • During wallet creation, select the options: "Standard wallet->I already have a seed->type the recovery phrase->Click 'Options'->tick 'BIP 39 seed'->Next."
  • In the next window, select "legacy (p2pkh)" for address that starts with '1' or "native segwit (p2wpkh)" for address that starts with 'bc1', depending on what you need to sign.
  • Finish creating the wallet, I'd recommend setting a strong password; once done, enable the addresses tab using "View->Show addresses", then click "Addresses".
  • To sign a message: Use "Tools->Sign/verify message", type your message, paste your address and click "sign", the signature will appear, then format it using the guide in the OP.

BTW, messages signed with the SegWit address wont be valid for most clients, only Electrum and others (I don't know any other client),
you must include that as a note to whomever you're sending the message to.

Important note: Make sure not to paste the seed phrase to any text editor, online posts or email, that alone can control all of your funds (you can do the message signing offline).

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March 06, 2021, 12:38:43 PM
 #827

I am using coinbase wallet. Can I sign a message from there? I can't see any tutorial for coinbase.
Here is a tutorial on How to sign messages to the Bitcoin address on Coinbase:
https://coins.newbium.com/post/1408-how-to-sign-message-your-bitcoin-address-coinbase

However, it was made about four years ago. I was trying to login into my old account at Coinbase, but it turns out that there is a new KYC policy. I don't know if the tutorial is still applicable or not.

This isnt working anymore. under the label, there is no link to sign a message.

I am using coinbase wallet. Can I sign a message from there? I can't see any tutorial for coinbase.
The app doesn't support signing a message natively but you can import the "recovery phrase" you can get from the 'setting icon' to a wallet that supports BIP39 seed.
I'd suggest Electrum and sign a message using it, your Bitcoin address should appear first in the 'addresses' tab.

Here's a short tutorial:
  • Get your Coinbase Wallet App's "recovery phrase" in the Settings (you need to type your pin), that's the 12-random-words, copy it to a piece of paper.
  • Download Electrum [link] (Stand-Alone if Windows) and I'd recommend you to verify its signature [tutorial], then launch it.
  • During wallet creation, select the options: "Standard wallet->I already have a seed->type the recovery phrase->Click 'Options'->tick 'BIP 39 seed'->Next."
  • In the next window, select "legacy (p2pkh)" for address that starts with '1' or "native segwit (p2wpkh)" for address that starts with 'bc1', depending on what you need to sign.
  • Finish creating the wallet, I'd recommend setting a strong password; once done, enable the addresses tab using "View->Show addresses", then click "Addresses".
  • To sign a message: Use "Tools->Sign/verify message", type your message, paste your address and click "sign", the signature will appear, then format it using the guide in the OP.

BTW, messages signed with the SegWit address wont be valid for most clients, only Electrum and others (I don't know any other client),
you must include that as a note to whomever you're sending the message to.

Important note: Make sure not to paste the seed phrase to any text editor, online posts or email, that alone can control all of your funds (you can do the message signing offline).


The process looks hard but I will give a try. Thank you so much.
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March 06, 2021, 11:28:31 PM
 #828

The app doesn't support signing a message natively but you can import the "recovery phrase" you can get from the 'setting icon' to a wallet that supports BIP39 seed. -snip-
This isnt working anymore. under the label, there is no link to sign a message.
Thank you for the confirmation. I'm also not sure the feature is still there. If Coinbase still provides a feature to import recovery phrases/seeds, it can make it easier for users to use that in other wallets (such as Electrum, Mycelium, etc.) that offer a sign/verify message feature.

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March 07, 2021, 02:41:28 AM
 #829

-snip-
This isnt working anymore. under the label, there is no link to sign a message.
The link provided by Husna is for Coinbase web or Coinbase App, and based from your reply, you're using the mentioned wallet.
In your previous reply, you've said "Coinbase Wallet".

Those are two different wallets but both owned by Coinbase, my previous reply is for "Coinbase Wallet", it wont work in "Coinbase" since they don't provide you a recovery phrase.

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April 11, 2021, 06:10:37 PM
 #830

They sent the following to my email; Sign a message from the Bitcoin address in the profile or an address you previously deposited from requesting the email change. https://bitcointalk.org/index.php?topic=990345.0

-----BEGIN BITCOIN SIGNED MESSAGE-----
Please, I need to change my email address, I can't make withdrawals or changes to my freebitco.in account because my email doesn't work
-----BEGIN SIGNATURE-----
<yguillenr31@hotmail.com>
my account was registered with jpausoo@hotmail.com / change it to yguillenr31 please
-----END BITCOIN SIGNED MESSAGE-----
I do not understand any of this, this page is in English, and what I am doing is translating with google translator, just change my email please
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April 11, 2021, 06:24:25 PM
 #831

<…>
The OP (original post) is translated into several languages. Take a look at this thread to see if any is more fitting for you: https://bitcointalk.org/index.php?topic=990345.msg10775520#msg10775520

The signature you’ve produced is invalid (it doesn’t even have a bitcoin address to begin with). Additionally, this is not the thread to publish the signed message (they referenced it to you as a guide); you’ll need to send it to whoever sent you the email. What’s more, your email information should be private (or very narrow circled), and you are making it public here (which is not in your best interest).

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April 12, 2021, 06:33:06 AM
 #832

Please help someone took over my google account and my freebitco account I can't restore my account newprograma@gmail.com i hid my money from them please restore my account to a new email address oleggremo2@gmail.com the password from fribitko 12345678 all my money is hidden in fun tokens I bought them for 0.1 BTC on the 8th, I can't throw a deposit address as I saved up all the money and then at the end I put it on order 3 you can check it's true my account
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April 13, 2021, 04:51:32 AM
 #833

Please help someone took over my google account and my freebitco account
This is not the place to try and recover a freebitco.in account... you'll need to contact freebitco.in support. Seems like the only to do that is via a contact form hidden in the "FAQ" section on the website... after you've logged in Roll Eyes You might have to create a new account and then contact them using that new account.

But I doubt they'll help much, given this entry on their FAQ:
Quote
How can I keep my account secure?

By using a strong password, not re-using the same password on any other website and not sharing your password with anybody else. We recommend using a password manager like LastPass to create and store your passwords. If you do not use these security practices and your account gets hacked, we shall not be able to help you.
A password of 12345678 is definitely not a strong password Undecided

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April 13, 2021, 07:50:00 AM
 #834

Please help someone took over my google account and my freebitco account
This is not the place to try and recover a freebitco.in account... you'll need to contact freebitco.in support. Seems like the only to do that is via a contact form hidden in the "FAQ" section on the website... after you've logged in Roll Eyes You might have to create a new account and then contact them using that new account.

But I doubt they'll help much, given this entry on their FAQ:
Quote
How can I keep my account secure?

By using a strong password, not re-using the same password on any other website and not sharing your password with anybody else. We recommend using a password manager like LastPass to create and store your passwords. If you do not use these security practices and your account gets hacked, we shall not be able to help you.
A password of 12345678 is definitely not a strong password Undecided

I made a request there they said to write here
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April 13, 2021, 08:20:12 AM
 #835

I made a request there they said to write here
What exactly did they say to do? Huh Can you copy/paste the instructions? Huh

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April 13, 2021, 09:10:48 AM
 #836

I made a request there they said to write here
What exactly did they say to do? Huh Can you copy/paste the instructions? Huh
Sign a message from the Bitcoin address in the profile or an address you previously deposited from requesting the email change. https://bitcointalk.org/index.php?topic=990345.0
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April 13, 2021, 09:20:50 AM
Last edit: April 13, 2021, 10:04:13 AM by DdmrDdmr
 #837

<…>
They are pointing to this thread so you can read on how to sign a message from a bitcoin address, not in order to sign a bitcoin message on this thread.

The idea is that you sign a message from an address you previously made a deposit from on the platform you are having the issue with, and post it wherever they inform you to do it (presumably, answering to their support email, but certainly not on this thread).

<...> a how do I find out the apec of the deposit if I did not make it not pay?
That is something you need to work out with their support.

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April 13, 2021, 09:56:03 AM
 #838

<…>
They are pointing to this thread so you can read on how to sign a message from a bitcoin address, not in order to sign a bitcoin message on this thread.

The idea is that you sign a message from an address you previously made a deposit from on the platform you are having the issue with, and post it wherever they inform you to do it (presumably, answering to their support email, but certainly not on this thread).

a how do I find out the apec of the deposit if I did not make it not pay?
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April 13, 2021, 04:14:54 PM
 #839

If you never deposited money to Freebitco.in, or you deposited from an exchange account or other service where you do not control the private keys, then you will not be able to sign a message from that address.

You have had an account on here since 2018, but obviously have not been active and have never staked an address or listed publicly a wallet address that you own.

You will need to talk to their support and advise them of this and see what other options you have for account recovery. In any case, posting in this thread is NOT what you should be doing.

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April 14, 2021, 02:41:07 AM
Merited by DdmrDdmr (1)
 #840

a how do I find out the apec of the deposit if I did not make it not pay?
What do you mean by "make it not pay"? You haven't deposited yet?
In freebitco in, you can put a default withdrawal address in your profile which is tied to the account and can even be used to login.
That's one of the options in their instruction, you can sign a message using it unless it's a custodial service or exchange's deposit address.

If you didn't set one, it will default to a random address which I believe they have the control.
That will leave you no option.

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