The relationship to bitcoin besides being created by bitcoiners is that it uses Schnorr Signatures for the secp256k1 curve - the same curve as bitcoin.
A Nostr account is identified by a public key, you follow accounts by following public keys and the ability to post as an account is controlled by the corresponding private key.
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A Nostr account is identified by a public key, you follow accounts by following public keys and the ability to post as an account is controlled by the corresponding private key.