I/O Coin is a Proof of Stake blockchain platform that aims to provide a variety of decentralized services. Including: payments, encrypted document storage, messaging, and offline transfers. The network is powered by the IOC coin.

HappyCoin is a Thai digital currency. It is designed to be used as a medium of exchange within Thailand. HappyCoin (HPC) has a hybrid consensus mechanism that combines elements of Proof-of-Work (PoW) and Proof-of-Stake (PoS).

BlackCoin is a Proof-of-Stake (PoS) cryptocurrency created in 2014. Users are rewarded for staking their coins to secure the network. BlackCoin's staking rewards vary between 1% to 8% per year.