HOLDERS
Log in with Discord, then sign with every wallet that holds the NFTs. Signing does not send a transaction and costs nothing.
Log in so this page knows which Discord account to link.
Sign every wallet that holds your NFTs. You can link more than one. Signing does not send a transaction.
For a Ledger, open Phantom, switch to the Ledger account, open the Solana app on the device, then press Phantom.