Yes you can can. If someone says they have a Beeple, and signed by someone other than Beeple, they don't have a Beeple. Same way as if I receive a 'real and va

Yes you can can. If someone says they have a Beeple, and signed by someone other than Beeple, they don't have a Beeple. Same way as if I receive a 'real and valid' message claiming to be you, but not signed by you, I can't say it was you that sent me the message.