  Quantum computing has the power to break current cryptographic systems,
disrupting online banking, shopping, data storage and communications. Quantum
computing also has the power to support stronger more resistant technologies.
In this paper, we describe a digital cash scheme created by Dmitry Gavinsky,
which utilises the capability of quantum computing. We contribute by setting
out the methods for implementing this scheme. For both the creation and
verification of quantum coins we convert the algebraic steps into computing
steps. As part of this, we describe the methods used to convert information
stored on classical bits to information stored on quantum bits.
