A hybrid proof of work / proof of service system offers a unique way to financially incentivise the operation of full nodes. Loki leverages these incentivised nodes to create a secondary network of privacy focused services. Access to these services is limited by cryptographic keys, which represent a commitment to a precomputed proof of work. These keys can be mined or purchased using Loki, the underlying currency. Loki is built from a modified version of the Monero source code, giving all transactions a high degree of privacy.