ownership

type TokenData struct {
	SlotOwner common.Address
	TokenURI  string
	Minted    bool
	Idx       int
}

type Tree interface {
	Root() common.Hash
	Transfer(eventTransfer *model.ERC721Transfer) error
	Mint(mintEvent *model.MintedWithExternalURI, idx int) error
	TokenData(tokenId *big.Int) (*TokenData, error)
	SetTokenData(tokenData *TokenData, tokenId *big.Int) error
	OwnerOf(tokenId *big.Int) (common.Address, error)
	SetRoot(root common.Hash)
}