Plasma Cash: Towards more efficient Plasma constructions
This work addresses scalability issues in blockchain systems for users and developers, but it is incremental as it builds upon existing Plasma constructions.
The paper tackles the problem of high data storage and bandwidth requirements in Plasma, a framework for scalable off-chain computation, by introducing Plasma Cash, which uses non-fungible tokens and Sparse Merkle Trees to reduce these requirements, with a reference implementation provided for evaluation.
Plasma is a framework for scalable off-chain computation. We describe and evaluate Plasma Cash, an improved Plasma construction which leverages non-fungible tokens and Sparse Merkle Trees to reduce the data storage and bandwidth requirements for users. We analyze the cryptoeconomic exit and challenge mechanisms used to keep user funds secured, even when the Plasma Cash chain's consensus algorithm is compromised. A reference implementation is provided for evaluation. Finally, we briefly discuss further improvements that can be made to the Plasma Cash protocol such as arbitrary denomination payments, less user data checking, fast and optimistic exits.