I have built a POC platform where a 'Creator' can create NFT's (Master Editions) and mint Print Editions for sale. Currently if you want to 'Buy' the NFT and transfer it to the Buyer, 2 signers are required. The Creator and the Buyer(Wallet).
My frontend is a React NextJs App, so no problem building the Call with the Buyer Signing it, but the Creator (is not around to sign, he busy drinking and being arty).
What is the normal way to get the Creator's Signer/Authority into the flow so that any buyer can buy his NFT's without him needing to Auth it? We only have the Creators Public Key.
I'm using Anchor and Metaplex.