Owning and trading BTC (Counterparty) assests
If you are seeking to purchase BTC/Counterparty digital assets like Rare Pepe or Spells of Genesis (that are not wrapped on OpenSea), you will need to download a compatible wallet.
The two most commonly used and recommended wallets are:
FreeWallet.io (BTC assets only)
If downloading on desktop, you will need to install despite Windows warning messages.