Double spending prevention of digital Euros using a web-of-trust. (arXiv:2204.06831v1 [cs.CR])

In order to provide more security on double-spending, we have implemented a
system allowing for a web-of-trust. In this paper, we explore different
approaches taken against double-spending and implement our own version to avoid
this within TrustChain\cite{trust} as part of the ecosystem of
EuroToken\cite{eurotoken}, the digital version of the euro. We have used the
EVA protocol\cite{eva} as a means to transfer data between users, building on
the existing functionality of transferring money between users. This allows the
sender of EuroTokens …

digital prevention spending trust web