If on bitcoin than raretoshi, stacks, and runes. 

Not as big or protocol compared to the ethereum based nft projects but I believe nfts will be used more in the future and people would want it backed by something like bitcoin. 

Why not have a 100 BTC priced Mona Lisa on the Bitcoin Blockchain instead of Ethereum you know. 

 Thanks!! I will check these, hopefully the work with lightning.

I wonder how much is a good price for a photo, i have no idea