sign a message | Bitcointalksearch.org

OmegaStarScream

staff

Activity: 3500

Merit: 6152

Quote from: ABCbits on May 11, 2020, 05:48:40 AM

While you could export your private key from Bitcoin Core to Electrum, it's safer to use sweep feature which available on Electrum or simply send Bitcoin from Bitcoin Core to address generated by Electrum wallet.

That's correct but that's also depend on what he's trying to do. If he wants to prove the ownership of an address (and not the funds), sweeping won't be of too much help because that would only move the funds from his Bitcoin core to one of his Electrum addresses.

ABCbits

legendary

Activity: 2870

Merit: 7490

Crypto Swap Exchange

Quote from: OmegaStarScream on May 10, 2020, 07:27:45 AM

You can't sign messages using SegWit addresses in bitcoin core but it should be possible to export the private keys of that address, import it to Electrum and then sign a message.

While you could export your private key from Bitcoin Core to Electrum, it's safer to use sweep feature which available on Electrum or simply send Bitcoin from Bitcoin Core to address generated by Electrum wallet.

bob123

legendary

Activity: 1624

Merit: 2481

Keep in mind that there is currently no defined standard to sign and verify messages with segwit addresses.
So any message signed with electrum will only be verifiable with electrum.

If you need a message to be verifiable with multiple tools (wallets / web sites), you need to use a legacy address.

wizardofwhere

jr. member

Activity: 30

Merit: 1

Thanks. I'll give it a try.