I prefer Kevlars solution, where the value of a coin, is used to store a referance + to any type of information. It could also encrypt the “code” they are envisageing.
It would seem from whats happened so far for coins, additional use beyong the currency block chain, are not the driver of alternate ccurrency development that “monatary value” has in makeing a secure network.
In fact, an old coin from an established network, such as Feathercoin, would be much more sure against manipulation. The transactions and copies of the Blockchain during normal currency use will also increase the surity of documents and “code” stored against “An established valued currency”.