# Deny List Mechanics and Authority

**`initialize_deny_list(collection_cap)`**: Sets up a deny list for a collection.

**`add_to_deny_list(...)` / `remove_from_deny_list(...)`**: Manage addresses on the deny list.

**`revoke_deny_list_authority(...)`**: Revokes the ability to modify the deny list.

**`is_denied(...)` / `can_receive_art20(...)`**: Check if an address is allowed to receive NFTs.