jm ÷·*ö{Ã`ösQ~ÚpÃÖ¦½åâiæLWhat do you mean by other existing locations for meta-data persistence? memo.cash uses OP_RETURN and is basically a proof of concept of Tokeda concept
https://whatsonchain.com/tx/6c1d4a4009a67c048bdc4b863a430471c2450e75f8e7f443df2448b596826429