I’m no expert, but I know chia network [0] is a crypto based on proving you have data stored. Not sure how popular or properly incentivised it is but could be a

I’m no expert, but I know chia network [0] is a crypto based on proving you have data stored. Not sure how popular or properly incentivised it is but could be a solution like you’ve described. 0: https://www.chia.net/ https://www.chia.net/