> Yes, so what this does is timestamp transactions (in this case SQL DML) in a decentralized way between nodes that do not or cannot trust each other. All this while enforcing write permissions ('grants') that were agreed upon earlier.

And this should be the very first thing to put in README. This is the single most important thing about any program that uses a blockchain protocol: what exactly is the decentralized, adversity-proof timestamping used for. Right after that should be placed rationale, i.e. how does the hostility resistance help compared to cooperation-based protocols.