If people want to trade an image they might agree that A pays B $200. I make A pay $230, pay $200 to B, pay $15 to the payment processor, etc.
That updates the record in mysql or DynamoDB and now B has bragging rights that they own the image. I am sure the cost of running that database conventionally is less than doing it on Etherium.
Why not?
If you buy artwork from an online site, then you can prove ownership by having a physical representation of that artwork at home. Same for a house or car, there's physical documentation to back the database. Banks are interesting, because they had physical ledgers for a long time before going fully digital.
And you have the startups whose value proposition is being an authority - they can't screw you over without imploding. But some do implode, within the crypto scene and outside it. When they do implode, that takes down all the databases with it.
- The token and current state of its ownership is updated with transactions in a distributed ledger. Only the owner can transfer ownership to a new address.
- The media is stored on a peer-to-peer hosting system like IPFS, allowing anybody to replicate and host it.
The "standards-compliant" aspect of ERC-721 is also very important as it makes these assets composable across a whole ecosystem of independent platforms and sites. This allows you to buy a token from one source, and auction it off on another unrelated platform.
Also, intentionally Misspelling ethereum let’s everyone know how troll of a post this is.
if you lose interest and turn off the db, the record is gone.
if your site goes down, i can't transact anymore.
the ethereum blockchain is hard to censor, hard to delete, and will hold records regardless of your continuing interest in the space.
However only the big ones mean anything.
Your DB means about as much as a NFT on Luna.