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Expand Up @@ -37,7 +37,7 @@ Ethereum is a decentralized system.

![Ethereum logon](./fig-02-eth-logon.png)

Users have a a private key (typically held in a browser extension). From the private key you can derive a public key, and from that a 20-byte address. When users need to log into a system, they are requested to sign a message with a nonce (a single-use value). The server can verify the signature was created by that address.
Users have a private key (typically held in a browser extension). From the private key you can derive a public key, and from that a 20-byte address. When users need to log into a system, they are requested to sign a message with a nonce (a single-use value). The server can verify the signature was created by that address.

![Getting extra data from attestations](./fig-03-eas-data.png)

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