Thanks for sharing this very interesting concept, perhaps towards a system where all assets in a stationary material world on a finite planet are accounted for.

Circular economy is not limited to recycling only; it also includes reuse, refurbishing and, as a last resort, recycling. In that sense there is little difference between a circular and spiral economy. Spiral evolution could mean escalation, or growth in a circular fashion with increasing radius, whatever it may represent.

If asserts are tracked by blockchain and NFTs, there would be quite a resource and energy overhead for managing all of that, e.g. computing power needed. What is your perspective on that?

BTW: this model makes me think of life on a finite planet, or in an environment with finite resources like in the film "City of Amber" where people need to make do with all the assets there are, repair and reuse. On a space ship (or Planet Earth) one would have to introduce this kind of system, https://medium.com/@peter-wurmsdobler/prosperity-within-material-boundaries-ff0ed36d5111