Polis

Cryptonex is a blockchain-based payment system that offers its users a decentralized platform to make fiat and cryptocurrency transactions. Users can convert fiat and cryptocurrencies. The Cryptonex network is based on the scrypt algorithm. It also enables debit and credit cards transactions as well as mobile payments.
Cryptonex uses a Proof-of-Stake (PoS) consensus mechanism and offers higher transaction speeds at lower fees.

DigixDAO is the decentralized autonomous organization being developed by Digix. The same company that issued the DGX token, enabling physical gold to be held as a digital asset. DGD is the DigixDAO token. It allows holders to participate in making decisions about how to grow the Digix Global Payment System.
Some have described the DigixDAO token issuance as the first ever crowd sale on the Ethereum Blockchain. DGD holders are rewarded for voting with incentives tied to the DGX coin. These two tokens have a symbiotic relationship that is meant to aid int he creation of a digital gold marketplace and payment system.