Particl (PART) privacy coin fuels the Particl ecosystem. You can buy the coin on the number of custodial and non-custodial exchanges alike. The fiat purchase with EUR is supported by the Litebit exchange.
Cosmos is a network which connects different distributed ledgers. It means that Cosmos helps to process interblockchain operations. Consensus algorithm used by Cosmos is Proof-of-Stake. Currently, the validators of the Cosmos ecosystem are forming an Inter-Blockchain Communication (IBC) protocol. The native token of the Cosmos system is ATOM.
Nexus (NXS) coin is available on a few exchanges, including Binance. You can purchase NXS for BTC. This coin can be staked or mined and serves as the core cryptocurrency of the decentralized Nexus network.