This document discusses competition and cooperation between Bitcoin and Ethereum blockchains, including the possibility of a decentralized exchange with escrow and side-chain implementations of different functionality. It also mentions prominent figures involved in sidechains and notes that sidechains still require mining and may lead to forks. Additionally, it indicates PayPal's CEO contacted Ethereum and summarizes regulatory views on Bitcoin from an Austrian hearing. Finally, it mentions the arrival of smart property from a hackathon.