POA Network is an Ethereum side-chain using Proof of Authority as the consensus mechanism. It therefore aims to allow higher scalability at the expense of decentralisation, with validators having 'Identity at stake'.
POA has deployed the first production cross-chain bridge, allowing their native tokens to be converted into ERC-20 tokens and flow freely between the POA side-chain and Ethereum.
Ethfinex is excited to support innovation which pushes the boundaries of what is possible on blockchains. You can learn more about the POA inter-chain bridge on the POA blog.