Coinbase is Exploring Cardano, Basic Attention Token, Stellar Lumens, Zcash, and 0x 
https://blog.coinbase.com/coinbase-is-exploring-cardano-basic-attention-token-stellar-zcash-and-0x-9e44f0eb823f
https://blog.coinbase.com/coinbase-is-exploring-cardano-basic-attention-token-stellar-zcash-and-0x-9e44f0eb823f