LISBON (Reuters) -Non-fungible token (NFT) firms need to engage with regulators and share what they are doing, blockchain-based fantasy soccer startup Sorare's chief executive said on Tuesday, acknowledging that users need some protection. Sorare, whose latest $680 million funding round was led by Japan's Softbank, is itself under investigation by the UK Gambling Commission to assess whether its game - where users play with encrypted digital soccer tokens they can buy and sell - amounts to gambling. "We need to engage with all the regulators, share what we are doing," Sorare CEO Nicolas Julia told Reuters at Lisbon's Web Summit.