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Bitcoin Forum > Bitcoin > Bitcoin Technical Support > Do I need to sync with the network to sign a message ?
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Author Topic: Do I need to sync with the network to sign a message ?  (Read 757 times)
OmegaStarScream (OP)
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February 04, 2016, 08:30:13 AM
 #1
I'm wondering if I need to download the whole blockchain to be able to sign a message ? I'm using Bitcoin Core btw .
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February 04, 2016, 08:56:31 AM
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No.
Will pretend to do unspeakable things (while actually eating a taco) for bitcoins: 1K6d1EviQKX3SVKjPYmJGyWBb1avbmCFM4
I am not on the scammers' paradise known as Telegram! Do not believe anyone claiming to be me off-forum without a signed message from the above address! Accept no excuses and make no exceptions!
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hee-ho.


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February 04, 2016, 08:58:00 AM
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nope. just tried it and it works fine. heck I didn't even connect to the internet. so I'm sure all you need is the private key.
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February 04, 2016, 08:59:01 AM
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Quote from: --Encrypted-- on February 04, 2016, 08:58:00 AM
nope. just tried it and it works fine. heck I didn't even connect to the internet. so I'm sure all you need is the private key.

I see , thanks then and I assume that It should be the same for verifying since you don't even need a private key for verifying signed message unlike signing them.
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February 04, 2016, 09:47:50 AM
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Quote from: OmegaStarScream on February 04, 2016, 08:59:01 AM
Quote from: --Encrypted-- on February 04, 2016, 08:58:00 AM
nope. just tried it and it works fine. heck I didn't even connect to the internet. so I'm sure all you need is the private key.

I see , thanks then and I assume that It should be the same for verifying since you don't even need a private key for verifying signed message unlike signing them.

Correct, signing and verification happen locally and no blockchain data is needed.
Im not really here, its just your imagination.
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