How to sign a message?!

[HCP]

-----BEGIN BITCOIN SIGNED MESSAGE-----
This is hero1111 from bitcointalk.org , today is 2017.10.07
and this is a test wallet to demonstrate signing a message with blockchain.info (via Tor)
-----BEGIN SIGNATURE-----
13b66N6vHJaarFxJtWYNnxRXD9SSYuKPqe
IG4cRGbGYzpNIaeQAzEwkIy6J/xc2Zz1sLYg7IOVVcMrPecXSJ4SyTLY0jcZR88tHQWMvOEsFJE3t27XXJaFdaU=
-----END BITCOIN SIGNED MESSAGE-----

You need to be more careful when copy/pasting signed messages... it appears you have an extra line break in your message... I was able to verify this:

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
This is hero1111 from bitcointalk.org , today is 2017.10.07 and this is a test wallet to demonstrate signing a message with blockchain.info (via Tor)
-----BEGIN SIGNATURE-----
13b66N6vHJaarFxJtWYNnxRXD9SSYuKPqe
IG4cRGbGYzpNIaeQAzEwkIy6J/xc2Zz1sLYg7IOVVcMrPecXSJ4SyTLY0jcZR88tHQWMvOEsFJE3t27XXJaFdaU=
-----END BITCOIN SIGNED MESSAGE-----

One extra space or one extra line break WILL cause a message verification to fail!

[1715197695]

1715197695

[1715197695]

1715197695

[1715197695]

1715197695

[rindo]

please verify:


-----BEGIN BITCOIN SIGNED MESSAGE-----
This is rindo, from bitcointalk.org user 449793 I sign this message to recover my account in case is compromised. Today is the 20-th of october 2017 11:20 GMT+1
-----BEGIN SIGNATURE-----
16MPQ81gKJpbX156EiXzH8fieap3jYUMKr
HyVvEPdQLfCDIjwi6hEo1tEIrl8Sma7u/dvxd8H3Rl2EBK1D3uoJbkenqNPRwbjKTDk1gs9xN91t2Kge5/F+4Lw=
-----END BITCOIN SIGNED MESSAGE-----

[MaoChao]

please verify:


-----BEGIN BITCOIN SIGNED MESSAGE-----
This is rindo, from bitcointalk.org user 449793 I sign this message to recover my account in case is compromised. Today is the 20-th of october 2017 11:20 GMT+1
-----BEGIN SIGNATURE-----
16MPQ81gKJpbX156EiXzH8fieap3jYUMKr
HyVvEPdQLfCDIjwi6hEo1tEIrl8Sma7u/dvxd8H3Rl2EBK1D3uoJbkenqNPRwbjKTDk1gs9xN91t2Kge5/F+4Lw=
-----END BITCOIN SIGNED MESSAGE-----

Message verified. BTC address: 16MPQ81gKJpbX156EiXzH8fieap3jYUMKr

[rindo]

please verify:


-----BEGIN BITCOIN SIGNED MESSAGE-----
This is rindo, from bitcointalk.org user 449793 I sign this message to recover my account in case is compromised. Today is the 20-th of october 2017 11:20 GMT+1
-----BEGIN SIGNATURE-----
16MPQ81gKJpbX156EiXzH8fieap3jYUMKr
HyVvEPdQLfCDIjwi6hEo1tEIrl8Sma7u/dvxd8H3Rl2EBK1D3uoJbkenqNPRwbjKTDk1gs9xN91t2Kge5/F+4Lw=
-----END BITCOIN SIGNED MESSAGE-----

Message verified. BTC address: 16MPQ81gKJpbX156EiXzH8fieap3jYUMKr

thx a lot...

[lion2791]

How to sign a wallet Block.io ?

[plauthor]

Quote from: MaoChao on Today at 10:48:37 AM
Quote from: rindo on Today at 09:38:56 AM
please verify:


-----BEGIN BITCOIN SIGNED MESSAGE-----
This is rindo, from bitcointalk.org user 449793 I sign this message to recover my account in case is compromised. Today is the 20-th of october 2017 11:20 GMT+1
-----BEGIN SIGNATURE-----
16MPQ81gKJpbX156EiXzH8fieap3jYUMKr
HyVvEPdQLfCDIjwi6hEo1tEIrl8Sma7u/dvxd8H3Rl2EBK1D3uoJbkenqNPRwbjKTDk1gs9xN91t2Kge5/F+4Lw=
-----END BITCOIN SIGNED MESSAGE-----
Message verified. BTC address: 16MPQ81gKJpbX156EiXzH8fieap3jYUMKr
thx a lot... Smiley

Thanks for an informative howto!

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
This is plauthor at bitcointalk.org on the 21st of October 2017 writing to sign shorena's post on signing messages.
-----BEGIN SIGNATURE-----
1DRrtJbT3WEhVb8x8xNzPDJ45omjZHjiU7
G3fm6rzUPrbhWFi7AbOpA89FS+7hI2gE8pwL+B9n0a0EDMHhhiKYW27ONpTBhg0YF8tV7YY+VGyOryPLTLDDR0s=
-----END BITCOIN SIGNED MESSAGE-----

[HCP]

Thanks for an informative howto!

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
This is plauthor at bitcointalk.org on the 21st of October 2017 writing to sign shorena's post on signing messages.
-----BEGIN SIGNATURE-----
1DRrtJbT3WEhVb8x8xNzPDJ45omjZHjiU7
G3fm6rzUPrbhWFi7AbOpA89FS+7hI2gE8pwL+B9n0a0EDMHhhiKYW27ONpTBhg0YF8tV7YY+VGyOryPLTLDDR0s=
-----END BITCOIN SIGNED MESSAGE-----

Quoted and verified...

[alegotardo]

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
Today is 21st October 2017. I am writing this message to prove that the account alegotardo is mine.
-----BEGIN SIGNATURE-----
1CKPcA7vdZCDY5di3gWtu4mb6p2C7Fk95u
H6iY8sx3K3PT3Dr0H+DAJ21N7TRy9VhE3xISnefMmUdBI7nGFL0RNB3LCCcJ7wxeLYvvXeO8Fww8SiD4IlTwj30=
-----END BITCOIN SIGNED MESSAGE-----

Please, can you verify for me? Thanks!

[apoorvlathey]

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
Today is 21st October 2017. I am writing this message to prove that the account alegotardo is mine.
-----BEGIN SIGNATURE-----
1CKPcA7vdZCDY5di3gWtu4mb6p2C7Fk95u
H6iY8sx3K3PT3Dr0H+DAJ21N7TRy9VhE3xISnefMmUdBI7nGFL0RNB3LCCcJ7wxeLYvvXeO8Fww8SiD4IlTwj30=
-----END BITCOIN SIGNED MESSAGE-----

Please, can you verify for me? Thanks!

Quoted and Verified successfully.


I think the right place to post these signatures is not on this thread, because it is meant as a tutorial for newbies to learn to use signatures.
To Stake your Addresses go to this thread : https://bitcointalk.org/index.php?topic=996318.0;topicseen

[nkarm1]

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
Hi this is nkarm1 from bitcointalk.org, today is 10.24.2017 or some of you might write is as October 24, 2017.
-----BEGIN BITCOIN SIGNATURE-----
Version: Bitcoin-qt (1.0)
Address: 16ZfJQFUa7jhJC1NyHH692SPQWLxab1KvV

IGN8EK1IXRMTDzJa02Jv4Fz3YggntTjPR1RzsZ8Z3NHPHcyIA0Mg294mMCv0fWZFHwgS6jtuRGhf+DDrR+o2swU=
-----END BITCOIN SIGNATURE-----

This is the best time to use offline wallets. Right now I will be limiting myself from using online wallets.

Please someone verify this one. Thank you! I cant verify it in blocktrail myself, but in chain querry it works. I'm using mycelium wallet for android, v 2.9.5 Can someone check it for me? Thanks.

[HCP]

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
Hi this is nkarm1 from bitcointalk.org, today is 10.24.2017 or some of you might write is as October 24, 2017.
-----BEGIN BITCOIN SIGNATURE-----
Version: Bitcoin-qt (1.0)
Address: 16ZfJQFUa7jhJC1NyHH692SPQWLxab1KvV

IGN8EK1IXRMTDzJa02Jv4Fz3YggntTjPR1RzsZ8Z3NHPHcyIA0Mg294mMCv0fWZFHwgS6jtuRGhf+DDrR+o2swU=
-----END BITCOIN SIGNATURE-----

This is the best time to use offline wallets. Right now I will be limiting myself from using online wallets.

Please someone verify this one. Thank you! I cant verify it in blocktrail myself, but in chain querry it works. I'm using mycelium wallet for android, v 2.9.5 Can someone check it for me? Thanks.

Quoted and verified using coining...

[JohnUser]

Hi,

Can you verify for me please.

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
This is JohnUser from bitcointalk.org and today is 2017.10.27
or as some of you might write it 27.10.27 or Friday 27th October 2017
-----BEGIN SIGNATURE-----
12MjKZH3qQcEarqziNWwpD595rK6VyT9UT
IHWUEVvo4QbDXpruVcSTWFelfsrlvL36VO+LgbYjvhn+QORIIhDId7CCxlzrd6k4HjZ4am8uhy15szcff3oUUOo=
-----END BITCOIN SIGNED MESSAGE-----

[OgNasty]

This thread should be pinned at the top. 

[S_Natural]

Hi,

Can you verify for me please.

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
This is JohnUser from bitcointalk.org and today is 2017.10.27
or as some of you might write it 27.10.27 or Friday 27th October 2017
-----BEGIN SIGNATURE-----
12MjKZH3qQcEarqziNWwpD595rK6VyT9UT
IHWUEVvo4QbDXpruVcSTWFelfsrlvL36VO+LgbYjvhn+QORIIhDId7CCxlzrd6k4HjZ4am8uhy15szcff3oUUOo=
-----END BITCOIN SIGNED MESSAGE-----

Message verified to be from 12MjKZH3qQcEarqziNWwpD595rK6VyT9UT 

[JohnUser]

Hi,

Can you verify for me please.

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
This is JohnUser from bitcointalk.org and today is 2017.10.27
or as some of you might write it 27.10.27 or Friday 27th October 2017
-----BEGIN SIGNATURE-----
12MjKZH3qQcEarqziNWwpD595rK6VyT9UT
IHWUEVvo4QbDXpruVcSTWFelfsrlvL36VO+LgbYjvhn+QORIIhDId7CCxlzrd6k4HjZ4am8uhy15szcff3oUUOo=
-----END BITCOIN SIGNED MESSAGE-----

Message verified to be from 12MjKZH3qQcEarqziNWwpD595rK6VyT9UT  

Thanks. I did it twice with Bitcoin Core v0.15.0.1 and no idea why it doesn't work when I try to verify on coining, anyway on btc core the message has been verified.

[shorena]

This thread should be pinned at the top.  

There is an old meta thread requesting this to be stickied, it was declined. I doubt asking again would yield a different answer.


Big thanks to everyone helping out here, verifying messages and answering questions.

[peterthegreat]

There are many ways to do this but the easiest would be to download a wallet that has that feature, like Samourai Wallet, and look into how you can do that on their site.

[scott btc]

-----BEGIN BITCOIN SIGNED MESSAGE-----
This is goyard67 from bitcointalk.org and today is 2017.10.29
-----BEGIN BITCOIN SIGNATURE-----
Version: MultiBit HD (0.5.1)
Comment: https://multibit.org
Address: 19QRYs99TFqGTqVGV1F49eQ2AkjPgCuiYe

Hwh7b2NKvRUlU/wHlvptC68rAhSwxugQ7puyHuMh8BU0YwSP61iNHlnAtw0KzHktvjiP/aPw+ZUHoIOZgqklYc4=
-----END BITCOIN SIGNATURE-----


Hi can you verify guy please thx

Haha, practice more read more, thanks for trying to sign message

Verified with blockchain and you should post like this

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
This is goyard67 from bitcointalk.org and today is 2017.10.29
-----BEGIN SIGNATURE-----
19QRYs99TFqGTqVGV1F49eQ2AkjPgCuiYe
Hwh7b2NKvRUlU/wHlvptC68rAhSwxugQ7puyHuMh8BU0YwSP61iNHlnAtw0KzHktvjiP/aPw+ZUHoIOZgqklYc4=
-----END BITCOIN SIGNED MESSAGE-----

or you can try post this on meta, here : https://bitcointalk.org/index.php?topic=996318.0

[goyard67]

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
This is goyard67 from bitcointalk.org and today is 2017.10.29
-----BEGIN SIGNATURE-----
19QRYs99TFqGTqVGV1F49eQ2AkjPgCuiYe
Hwh7b2NKvRUlU/wHlvptC68rAhSwxugQ7puyHuMh8BU0YwSP61iNHlnAtw0KzHktvjiP/aPw+ZUHoIOZgqklYc4=
-----END BITCOIN SIGNED MESSAGE-----

Hi, need verify please thanks (I'm having trouble with the English language. thanks you @scott btc)

[shorena]

Code:

-----BEGIN BITCOIN SIGNED MESSAGE-----
This is goyard67 from bitcointalk.org and today is 2017.10.29
-----BEGIN SIGNATURE-----
19QRYs99TFqGTqVGV1F49eQ2AkjPgCuiYe
Hwh7b2NKvRUlU/wHlvptC68rAhSwxugQ7puyHuMh8BU0YwSP61iNHlnAtw0KzHktvjiP/aPw+ZUHoIOZgqklYc4=
-----END BITCOIN SIGNED MESSAGE-----

Hi, need verify please thanks (I'm having trouble with the English language. thanks you @scott btc)

It verifies just fine.