As with all FFXIV mods, remember that Square Enix officially prohibits the use of third-party tools. The community operates under a "don't ask, don't tell" policy. As long as you aren't using mods to cheat or harassing other players with your customizations, you are generally safe—but always keep your screenshots and mod lists off official forums.
Supposedly a Layer-1 fork that uses "Proof of History" mixed with TBSE's standard consensus. Basically, Solana meets TBSE. tbse-x