I think quantum register ledger is developing something regarding this
And of course IOTA "claims" to be quantum proof...
Sometimes for investors to find a good peer review is hard, it is like find a doctor MD 2nd opinion.
when
aI get a spare time I will try to read a paper called
You Shall Not Pass! (Once Again): An IoT Application of Post-quantum Stateful Signature Schemes
https://dl.acm.org/citation.cfm?id=3197512--AC