http://lxqyom6a3p6fdgsy6mpjyhjqjdpzleseck2jojwwzcilmsvduaeo7zyd.onion/2020/06/11/how-to-prove-control-of-a-bitcoin-segwit-address/index.html
Our public segwit address is: 12B4TVusdGp1oAnmZBLtiPDkR8GPPBrEDz Our message is: This address belongs to btcleak.com Our signature is: IDiRsL0xV8rWoe7KiXaxQtmMAQHfuccG2Gu/t7L3JrgleElbg+zoSXFpVmLHPDyr/1d8SVErvKmqgPDbMknMCK8= Copy and paste these three strings into Electrum, make sure there are no unintended spaces, linebreaks, or other characters, and click “Verify”.