by exploiting Bitcoin's Segwit and Taproot upgrades in unintended ways. Bitcoin's "utility" is currency and it has performed that "feature" as intended for 14 years. If we want a digital photo album with timestamps we can create a chain for such purpose.
What about op_return? And encoding as sha256?
Not that i think it's good idea but in the long run they WILL run out of funds. So...