Amazing article! SERO applies UTXO and ACCOUNT models together, using UTXO model where CT(Confidential Transactions) are required, and using ACCOUNT model where smart contracts need to be run. SERO seamlessly integrates these two models through trading, consensus, and Pedersen Commitment algorithms, enabling smart contracts to perform surprisingly.
https://medium.com/@SERO.CASH/sero-the-technological-innovation-of-the-blockchain-of-privacy-protection-1beb3fcca4a5