Holochain looks promising. This is such a huge project, This is easily the biggest, most impressive project I have seen. This is NOT your regular project on blockchain. In fact, they aim to be a significant upgrade in the blockchain model itself. "Holo chain" helps people to Own their own data, Build lighter, faster, cheaper applications, Connect applications to suit their needs. Holochain system is a double entry accounting system with countersigning between at least two parties. It is not one entity sending tokens to another entity. It is a manual transaction where both parties must validate each other before it can take place and both sides sign the transaction to their own chains.