As of now, Quantum Resistant Ledger (QRL) coin is represented on a few exchanges paired against BTC. Originally being an ERC-20 token, it switched to its own mainnet in 2018. The QRL claims to be the first decentralized cryptocurrency, that is resistant to both classical and quantum computing attacks.
Mithril is a decentralized Ethereum-based asset, functioning as a reward token for content creators. The coin is listed by number of exchanges, including Bithumb, OKEX, and other platforms.
Believing that valuable content must be monetized, MITH devs launched Mithril coins as a reward for creators of social content. This process represents a so-called “social mining”. Reward tokens can later be utilized within the Mithril ecosystem.