[can16358p]

The functionality that alters the metadata is actually a requirement for our project. As time passes the token turns into something different. (For clarification: this is clearly defined in our whitepaper, website, Discord server, and most importantly easily verifiable on contract code itself so no shady business here)

Strictly speaking, ERC-721 (the official standard for NFTs on Ethereum) doesn't say that whatever is returned from tokenUri function (which defines all the properties, name, image etc. of the particular NFT) can't change. So in simpler terms the contract can change the tokenUri afterwards (of course if there is code in the contract to support that).

It boils down to how users/community perceive NFTs, and your house analogy is perfect for what we are doing (in our case something is "happening to the house as time passes" but you get the idea). In the technical sense the standard is agnostic about tokenUri mutability, as long as the token DOES have a tokenUri (which can just be a base64 "data:" URI anyway).

It will be interesting to see what's possible, I'm pretty much sure that the "killer app" based on ERC-721's haven't been invented and when this Ponzi-like ridiculously pricing of non-functional NFTs mania is over, we'll start seeing some real solutions.