Emercoin is a fork of Peercoin, one of the earliest alternative coins based on the Bitcoin protocol. Emercoin, like Peercoin, uses a hybrid consensus system so that blocks can be mined using both Proof-of-Work (PoW) and Proof-of-Stake (PoS). Apart from this change in the consensus layer, both Emercoin and Peercoin operate very similarly to Bitcoin. Since its launch in 2013, Emercoin has attempted to tackle very different use cases for its protocol. In 2016, it announced an Emercoin-based product for AML/KYC compliance, followed by an ad-tech solution for pay-per-click advertising. As of this date, the Github repositories for both projects appear to have been abandoned by their respective core development teams and the main GitHub repository for EmercoinCore is also stale.