Unicity: Predicates and Atomic Swaps
It extends Unicity's execution model to support programmable conditions without on-chain consensus, enabling new DeFi applications.
The paper generalizes Unicity token ownership to programmable predicates for off-chain smart-contract functionality, proving security preservation and demonstrating trustless atomic swaps.
We generalize Unicity token ownership to programmable spending conditions called predicates, enabling smart-contract like functionality executed off-chain directly by relying parties rather than by consensus participants. We prove that the security properties of the Unicity execution layer are preserved under reduction to predicate family unforgeability. To demonstrate the utility of the model, we show how to implement trustless atomic swaps by using predicates.