Place/Date: - July 8th, 2021 at 9:49 pm UTC · 5 min read Dear Zach, I am writing to you in my capacity as president and founder of RChain Cooperative. Having seen Tesla’s very public flip flop on BTC, I was very encouraged. Yes, blockchain is an incredibly important development. No, BTC (in fact any proof-of-work protocol) is not a responsible implementation of the key ideas. These are exactly the right conclusions. With those very conclusions in mind, in 2017 we founded RChain Cooperative with the singular purpose to build the world’s most scalable, environmentally responsible blockchain. RChain is now over a year in mainnet, releasing key features such as last finalized state and block merge which allow not having to go all the way back to genesis block to guarantee transaction integrity and concurrent execution of isolated transactions, respectively.