Bitcoin Forum
November 23, 2017, 12:16:53 AM *
News: Latest stable version of Bitcoin Core: 0.15.1  [Torrent].
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: How to get Public Key in Multbit?  (Read 1117 times)
Parham6
Member
**
Offline Offline

Activity: 70

Deceased


View Profile
May 21, 2014, 03:42:44 AM
 #1

Can someone please help me with getting my Public Key from Multibit client? I heard you need your Public Key for multsig and I have no idea what that even is but I'm wondering how I can get the public key.

In memorial of the soon to be dead...
R.I.P.
1511396213
Hero Member
*
Offline Offline

Posts: 1511396213

View Profile Personal Message (Offline)

Ignore
1511396213
Reply with quote  #2

1511396213
Report to moderator
1511396213
Hero Member
*
Offline Offline

Posts: 1511396213

View Profile Personal Message (Offline)

Ignore
1511396213
Reply with quote  #2

1511396213
Report to moderator
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1511396213
Hero Member
*
Offline Offline

Posts: 1511396213

View Profile Personal Message (Offline)

Ignore
1511396213
Reply with quote  #2

1511396213
Report to moderator
1511396213
Hero Member
*
Offline Offline

Posts: 1511396213

View Profile Personal Message (Offline)

Ignore
1511396213
Reply with quote  #2

1511396213
Report to moderator
1511396213
Hero Member
*
Offline Offline

Posts: 1511396213

View Profile Personal Message (Offline)

Ignore
1511396213
Reply with quote  #2

1511396213
Report to moderator
MrBig
Sr. Member
****
Offline Offline

Activity: 369



View Profile
May 21, 2014, 05:06:31 AM
 #2

Can someone please help me with getting my Public Key from Multibit client? I heard you need your Public Key for multsig and I have no idea what that even is but I'm wondering how I can get the public key.

Isn't your public key the BTC address? I think you mean you're trying to get the private key. Go to the wallets menu and then to export private key. Then after you exported it to a file just open that file with notepad and you should see your private key in there.
BunsenBurner
Hero Member
*****
Offline Offline

Activity: 657



View Profile
May 21, 2014, 10:06:15 AM
 #3

Isn't your public key the BTC address? I think you mean you're trying to get the private key.

"Private key", "Public key" and "Address" are indeed 3 different things.
With private key, you can work out the public key but not the other way round.
With public key, you can work out the address but not the other way round.


Parham6
Member
**
Offline Offline

Activity: 70

Deceased


View Profile
May 22, 2014, 05:27:51 AM
 #4

No, I need the public key which is different than address. You need it for multisig and I have no idea what multisig even is.

In memorial of the soon to be dead...
R.I.P.
nixon99
Sr. Member
****
Offline Offline

Activity: 244


View Profile
May 22, 2014, 05:28:28 PM
 #5

is this of any help?

https://multibit.org/blog/2013/07/24/how-to-check-signatures.html

DannyHamilton
Legendary
*
Offline Offline

Activity: 1988



View Profile
May 22, 2014, 09:29:03 PM
 #6

No, I need the public key which is different than address. You need it for multisig and I have no idea what multisig even is.

If you don't know what MultiSig even is, then why are you trying to find your public key?


I don't think there is an easy way to find a public key from MultiBit at this time.

You might have better luck asking in the MultiBit forum:
https://bitcointalk.org/index.php?board=99.0

Harley997
Sr. Member
****
Offline Offline

Activity: 266


View Profile
June 10, 2014, 12:47:38 AM
 #7

Can someone please help me with getting my Public Key from Multibit client? I heard you need your Public Key for multsig and I have no idea what that even is but I'm wondering how I can get the public key.

Your public key is your BTC address. You can go to receive then copy an address that you want to receive at/use.

▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
PRIMEDICE
The Premier Bitcoin Gambling Experience @PrimeDice
▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
DannyHamilton
Legendary
*
Offline Offline

Activity: 1988



View Profile
June 10, 2014, 12:58:13 AM
 #8

Your public key is your BTC address. You can go to receive then copy an address that you want to receive at/use.

This is not true.

A public key is a 256 bit number if compressed (or a 256 bit x coordinate and 256 bit y coordinate of a point if not compressed) calculated from the private key using ECDSA with the Secp256k1 curve.

A BTC address is a hash of a public key with a version number prepended, a checksum appended, and then Base58Check encoded.

kuverty
Sr. Member
****
Offline Offline

Activity: 322



View Profile
June 10, 2014, 10:59:05 AM
 #9

I answered this in the other thread but since this exists I think it's relevant to post this here as well:

It is not that simple, I don't think you can see it from the wallet as it is. I do not use Multibit, though. One thing to note right away is that your address is generated using a cryptographic digest (hash) of your public key, so there is no way you can go back. It is not possible to compute the public key using your public bitcoin adress.

You will need to use your private key to calculate that, there are some tools for this luckily and the easiest method I can think of is going to https://www.bitaddress.org and choosing "Wallet details". There you can input your private key in pretty much any format it happens to be in and it will calculate for you the public key, either in the 65-byte uncompressed format or the 33-byte compressed format, whichever you need. As far as I remember, the page also works offline so you can do that for security and you should, too.

To see yout private key, export your private key to a file in Multibit and open the file in your favourite text editor.
Can I ask, what do you plan using your public key for?
BitCoinDream
Legendary
*
Offline Offline

Activity: 1246

The revolution will be digital


View Profile
June 10, 2014, 11:23:38 AM
 #10

Can someone please help me with getting my Public Key from Multibit client? I heard you need your Public Key for multsig and I have no idea what that even is but I'm wondering how I can get the public key.

For the address u want your public key, just import it to blockchain.info and find out the public key from import/export section.

shorena
Legendary
*
Offline Offline

Activity: 1400


ALL escrow is signed! https://keybase.io/verify


View Profile WWW
June 10, 2014, 12:45:17 PM
 #11

No, I need the public key which is different than address. You need it for multisig and I have no idea what multisig even is.

So:

#1 start multibit
#2 let it sync (optional)
#3 go to tools -> export private key
#4 select dont encrypt and hit export private keys
#5 go to your multibit folder
#6 open multibit.key with a texteditor; this will look like this:

Code:
# KEEP YOUR PRIVATE KEYS SAFE !
# Anyone who can read this file can spend your bitcoin.
#
# Format:
#   <Base58 encoded private key>[<whitespace>[<key createdAt>]]
#
#   The Base58 encoded private keys are the same format as
#   produced by the Satoshi client/ sipa dumpprivkey utility.
#
#   Key createdAt is in UTC format as specified by ISO 8601
#   e.g: 2011-12-31T16:42:00Z . The century, 'T' and 'Z' are mandatory
#
KwifdhS1MVnGVPGEfcNJaubBLHLtmf7u9HtmXockXoirNfYzJmNY 2014-06-10T12:28:17Z
# End of private keys

now as you can see we have a private (!) key. You probably have more than one. Just make sure you dont post them somewhere on the internet if you even plan to use the address that belongs to that key.

#7 decode the base58 private key https://en.bitcoin.it/wiki/Base58Check_encoding
#8 follow the steps here https://en.bitcoin.it/wiki/Technical_background_of_Bitcoin_addresses to get your public (!) key
#9 do whatever you wanted to do with it Smiley

Loophole
Hero Member
*****
Offline Offline

Activity: 621



View Profile
June 10, 2014, 01:24:40 PM
 #12

OP never come back to this thread after May 22, and judging from his last reply in this thread, I guess he don't really need it now...

No, I need the public key which is different than address. You need it for multisig and I have no idea what multisig even is.

Parham6
Member
**
Offline Offline

Activity: 70

Deceased


View Profile
June 10, 2014, 02:48:14 PM
 #13

Thank you shorena, finally someone gave the correct answer to my question. I'll try it now.

#7 decode the base58 private key https://en.bitcoin.it/wiki/Base58Check_encoding
#8 follow the steps here https://en.bitcoin.it/wiki/Technical_background_of_Bitcoin_addresses to get your public (!) key

Ok, I didn't understand a single word about these two steps. Can you provide an example or tell them in a noob-friendly way?

In memorial of the soon to be dead...
R.I.P.
Newar
Legendary
*
Offline Offline

Activity: 1274


https://gliph.me/hUF


View Profile
June 10, 2014, 03:11:53 PM
 #14

If you ever have spent from that address the easiest way to see it is at blockexplorer.com, for example:

https://blockexplorer.com/address/13TSn53GewEBwDPKSJNsSmoYHuSVtgSoQE

Public key:
03a22ce833a2fd709a1021ce13cdf1207a5ef03f4799519c015b8a9374470dd307

OTC rating | GPG keyid 1DC91318EE785FDE | Gliph: lightning bicycle tree music | Mycelium, a swift & secure Bitcoin client for Android | LocalBitcoins
Parham6
Member
**
Offline Offline

Activity: 70

Deceased


View Profile
June 10, 2014, 03:29:28 PM
 #15

If you ever have spent from that address the easiest way to see it is at blockexplorer.com, for example:

https://blockexplorer.com/address/13TSn53GewEBwDPKSJNsSmoYHuSVtgSoQE

Public key:
03a22ce833a2fd709a1021ce13cdf1207a5ef03f4799519c015b8a9374470dd307

But I've tried to put the public key from blockchain.info and the site didn't accept it saying the public key is invalid.

In memorial of the soon to be dead...
R.I.P.
Newar
Legendary
*
Offline Offline

Activity: 1274


https://gliph.me/hUF


View Profile
June 10, 2014, 03:36:20 PM
 #16

The public key from blockexplorer.com worked for me previously for multisig transactions. AFAIK blockchain.info does not display the public key.

OTC rating | GPG keyid 1DC91318EE785FDE | Gliph: lightning bicycle tree music | Mycelium, a swift & secure Bitcoin client for Android | LocalBitcoins
Parham6
Member
**
Offline Offline

Activity: 70

Deceased


View Profile
June 10, 2014, 04:33:55 PM
 #17

The public key from blockexplorer.com worked for me previously for multisig transactions. AFAIK blockchain.info does not display the public key.

Maybe I put something else by mistake, it was the hash or something like that.

In memorial of the soon to be dead...
R.I.P.
kuverty
Sr. Member
****
Offline Offline

Activity: 322



View Profile
June 10, 2014, 04:54:38 PM
 #18

The public key from blockexplorer.com worked for me previously for multisig transactions. AFAIK blockchain.info does not display the public key.

Maybe I put something else by mistake, it was the hash or something like that.

Did you check my answer? It will take you two minutes that way.
shorena
Legendary
*
Offline Offline

Activity: 1400


ALL escrow is signed! https://keybase.io/verify


View Profile WWW
June 10, 2014, 05:02:33 PM
 #19

Thank you shorena, finally someone gave the correct answer to my question. I'll try it now.

#7 decode the base58 private key https://en.bitcoin.it/wiki/Base58Check_encoding
#8 follow the steps here https://en.bitcoin.it/wiki/Technical_background_of_Bitcoin_addresses to get your public (!) key

Ok, I didn't understand a single word about these two steps. Can you provide an example or tell them in a noob-friendly way?

as it was allready posted here:

I answered this in the other thread but since this exists I think it's relevant to post this here as well:

It is not that simple, I don't think you can see it from the wallet as it is. I do not use Multibit, though. One thing to note right away is that your address is generated using a cryptographic digest (hash) of your public key, so there is no way you can go back. It is not possible to compute the public key using your public bitcoin adress.

You will need to use your private key to calculate that, there are some tools for this luckily and the easiest method I can think of is going to https://www.bitaddress.org and choosing "Wallet details". There you can input your private key in pretty much any format it happens to be in and it will calculate for you the public key, either in the 65-byte uncompressed format or the 33-byte compressed format, whichever you need. As far as I remember, the page also works offline so you can do that for security and you should, too.

To see yout private key, export your private key to a file in Multibit and open the file in your favourite text editor.
Can I ask, what do you plan using your public key for?

There are implementations that can do that for you. If you dont trust the homepage you can just use their code.

https://github.com/pointbiz/bitaddress.org


knight_mere4
Newbie
*
Offline Offline

Activity: 2


View Profile
June 10, 2014, 05:37:15 PM
 #20

Can someone please help me with getting my Public Key from Multibit client? I heard you need your Public Key for multsig and I have no idea what that even is but I'm wondering how I can get the public key.
in the multibit from the menu choose export private keys and then get keys as you wish password protected or simples
Pages: [1]
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!