> NFTs are a scam and are retroactively obsoleted by digital signatures
I'm not one to ever defend NFTs, but this is not right. Suppose I bought an extremely trendy natural number k ∈ ℤ and I have a signature σ from its inventor that says "doomrobo owns k". Suppose in a year the trend has passed and I'd like to sell k. How do I transfer ownership to someone else? Clearly sending σ doesn't suffice, since σ is public. Do I need a new signature?
Ok different setup: σ is actually a signature from me and the inventor saying "the non-inventor pubkey that signed of this message is the owner of k". How do I transfer σ now? Do I send my signing secret key? Who makes sure I deleted my copy of the signing key?
I'm not one to ever defend NFTs, but this is not right. Suppose I bought an extremely trendy natural number k ∈ ℤ and I have a signature σ from its inventor that says "doomrobo owns k". Suppose in a year the trend has passed and I'd like to sell k. How do I transfer ownership to someone else? Clearly sending σ doesn't suffice, since σ is public. Do I need a new signature?
Ok different setup: σ is actually a signature from me and the inventor saying "the non-inventor pubkey that signed of this message is the owner of k". How do I transfer σ now? Do I send my signing secret key? Who makes sure I deleted my copy of the signing key?