In one of my posts I suggested a way to prove uniqueness
look at the post
Also, another post I made could solve this problem.
Yours sincerely,
Richard Jansma
Empowering the vision and possibilities of everyone and anything RichardJansma.nl & RichardJ.nl
ETH: 0xa9196E531aE237B3edFE0B10299932CfD5dd494B
Opensea: RichardJansma