The document provides an overview of Scalar DL, a tamper-evident and scalable database system. Key characteristics include being tamper-evident, scalable, and able to detect Byzantine faults. It supports various databases and clouds. The architecture uses ledgers, ordering, and auditors. Unique features include ACID nested contract execution and user-defined functions. Benchmark results show it achieves high scalability. Use cases are where data integrity is important, scalability is required, and on-demand tamper detection is acceptable.