| "What's Ethereum's killer app?" we asked ourselves not long ago. Now we know. It's the world's best publicly-accessible settlement platform for financial transactions. I don't see any evidence of this being true.
I would say that the killer app currently is decentralised finance, lending and trading for example on the chain. The second killer app is NFTs, basically the exchange of art on the chain.
NFTs aren’t exclusively art. For example, I previously worked at https://unlock-protocol.com/ which uses NFTs to signify membership