What leaves your browser.
Tezos Passport has no user account or profile database. It does use public and third-party services to build profiles, connect Kukai, preview Spotify links, and submit operations you approve.
Public Tezos data
Wallet profiles request public blockchain data from TzKT. Wallet addresses, balances, tokens, and operations are public by design. If you mint, the canonical Spotify URL and your optional note become public, permanent token metadata on Tezos.
Spotify previews
Unfurling sends the submitted link to Spotify's oEmbed service. The embedded player remains off until you choose “Load player.” Loading it lets Spotify receive browser and network information and use cookies or similar technologies under Spotify's own policies. Tezos Passport does not copy Spotify audio, artwork, or preview metadata into the token.
Read Spotify's privacy policyWallet and device storage
Octez Connect may keep wallet-pairing information in this browser. Tezos Passport keeps a local shortcut to your personal link collection and can rediscover that collection from public chain data on another device. It never asks for or stores your seed phrase.