Interesting:
This documentation covers the Alpha release of Stratis sidechains. To enable users to get started, Stratis has created a sidechain running on the Stratis testnet. It has 5 federation members supporting it drawn from the Stratis Platform internal team. The sidechain has its own token called the APEX. Users can deposit STRAT on the sidechain and in return they receive APEX to spend on the sidechain. Stratis provides a modifed STRAT wallet and an APEX wallet to help facilitate this.