
electrum sign verify message fail, If you get an error when trying to activate iMessage or FaceTime
Open MyCrypto's Sign and Verify Message to sign the information string you just copied. First you need to choose a way to unlock your Ethereum account with DOT tokens, which you can select directly if your private key is stored on a cold wallet such as Ledger or Parity Signer. If you don't have one of the last three ways you can choose (private key, Keystore file, monem note) to unlock.