Use the Sign Message feature from your Esher wallet to verify ownership of a wallet address that belongs to you.
Enter the following data into the wallet software:
Address: EU3bM6BkgFVt2cnFXDQ5YuqxPw4nZ999Wi
Message: <display name from the form below>
Click the Sign Message button in the wallet, and copy/paste the resulting Signature at the bottom of this form.
Finally, click the Claim button below to claim your address, which will display your custom display name instead of the default wallet address on this site.
NOTE: You can update your claimed address at any time, as often as you wish. To remove a previously claimed display name, simply sign a blank message to return the address back to its original value.
