Accounts and addresses
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You connect a wallet through Wallet Standard (Phantom, Solflare, Backpack) and sign one fixed message. One wallet signature of a fixed message derives the spend key, the nullifier key and the viewing secret; the same wallet always opens the same account.
Keys
The signature derives three keys: the spend key, the nullifier key and the viewing secret. The owner key is ownerKey = Poseidon(spendKey, nullifierKey), and the viewing key pair comes from the viewing secret. Everything is derived in the page; nothing is stored by the site.
Your Omnibus address
An Omnibus address encodes the owner key and the viewing public key. Anyone can pay it; nobody can read it on the chain.
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