The internet was built without a native identity layer. Our digital identity is our most valuable asset, it permits us to access services, execute transactions and prove ownership of our assets. Right now, almost all things that happen in the web3 ecosystem are purely financial objects. Soulbound tokens (SBTs), non-transferable, non-tradeable digital identities, are one way of aggregating social relationship information in web3. Will they become web3 passports?