[ilovenerds]

WebAuthn is a web standard created by the w3c. Passkey is an extension of that spec created by a consortium of tech corps. Using Ethereum is like signing a message with a GPG key. It just proves that you control the private key pair to that public address on the blockchain. WebAuthN does something similar, but instead of using the public Ethereum blockchain and private/public key pairs to verify it, it uses your TPM, an authentication key (yubikey), manufacturer metadata and a "Relying party" to make attestations. The relying party is a third party, like the FIDO metadata service, and it's specified in JavaScript so the end user can't change it.

On the other hand, with the Ethereum protocol, you only have to rely on the public blockchain to attest/sign/prove ownership. You can choose the software and hardware that you use to secure your wallet too. You can even keep that wallet airgapped, totally offline and still authenticate using QR codes. If you were so inclined you could even run your own end point/node so you're not relying on any 3rd parties to attest/sign for you. It's a self sovereign online identity if you want it to be. It also has other benefits like the ability to store monetary value in the way of cryptocurrencies.

The ability to verify ownership of digital assets (tokens), like NFTs, and use those in creative ways like we have here. You can also use the Ethereum Name Service and tie a .ETH domain name to your public key, so people know that a message sent by frizlab.eth is really you, even if you have to get a new wallet address. It's your identity (frizlab.eth), your wallet, and with NFT's I think it could also verify and visualize your reputation or skillset online too, no matter what website you're on. Your identity owned by you and built on top of a world wide, immutable, distributed, consensus protocol. I wrote an article for Wordpress developers with my ideas, but I think it can apply to the web as a whole.

https://caches.xyz/the-rostrum/wordpress-web3-and-ethereum-w...