HyperCash, formerly known as Hcash, is a digital currency distinguished by its unique approach to bridging the gap between public and private blockchains. It facilitates the exchange of information across different blockchains, easing the transfer of data and value from one system to another. HyperCash operates on a dual-chain model that encompasses both a blockchain and a Directed Acyclic Graph (DAG), aiming to tackle prevalent issues of security and scalability.

HC stands as a crucial token that ensures the ecological balance within the HCASH network. It functions not just as an asset within the HyperCash chain, enabling holders to engage in the chain's governance, but also serves a significant role as a pledged asset in the HyperExchange chain, contributing to the creation of HX tokens. The fundamental mission of HyperCash extends beyond conventional cryptocurrency boundaries, aiming to establish a network where disparate blockchains, both public and private, can interact and communicate seamlessly. This approach is geared towards enhancing interoperability among a broad array of cryptocurrencies. Furthermore, HyperCash is distinct in its emphasis on secure privacy features, offering robust mechanisms that allow for anonymous transactions, an indispensable element for certain operations within the sphere of cryptocurrencies.

Security in HyperCash is bolstered by the utilisation of quantum signatures, making it one of the pioneer blockchains resistant to potential quantum computing attacks. This feature is paramount, considering the swift advancements in quantum computing that could threaten the security of conventional blockchains in the future.