More specifically orbitdb [1] which is built on top of ipfs is a potential starting point. It implements a decentralized and distributed append only log data st

More specifically orbitdb [1] which is built on top of ipfs is a potential starting point. It implements a decentralized and distributed append only log data structure as well as object store and key/value lookup db. Not quite a SQL database though. [1] https://github.com/orbitdb/orbit-db/blob/master/README.md https://github.com/orbitdb/orbit-db/blob/master/README.md