Problem with that kind of stuff is having it not be currently available. You can’t just up and sell a bunch of superconducting cable without someone wondering how you got it. With precious metals, selling off small amounts won’t draw as much attention.
You can, possibly, keep your stash of platinum secret for the rest of your life, claim you made a trade or whatever. Superconducting materials take a lot more backstory to explain not only how you got any, but how you keep getting it. Unless you sell it all at once, which is still going to cause attention, and you end up with the possibility of the funds being frozen or seized.
Since nobody else even has superconducting cable at all (afaik, anyway), you could even end up in deep shit with people wanting the secret bad enough to fuck you up.
Why limit yourself to real materials? Just whip up a few hundred thousand miles of superconducting cable and then set your price.
If you have to quibble about things being possible, just figure out graphene batteries/capacitors and you’re set forever.
Problem with that kind of stuff is having it not be currently available. You can’t just up and sell a bunch of superconducting cable without someone wondering how you got it. With precious metals, selling off small amounts won’t draw as much attention.
You can, possibly, keep your stash of platinum secret for the rest of your life, claim you made a trade or whatever. Superconducting materials take a lot more backstory to explain not only how you got any, but how you keep getting it. Unless you sell it all at once, which is still going to cause attention, and you end up with the possibility of the funds being frozen or seized.
Since nobody else even has superconducting cable at all (afaik, anyway), you could even end up in deep shit with people wanting the secret bad enough to fuck you up.