Passports

The anchor of identity

The Passport is the core contract of the Persona layer. It is an on-chain Decentralized IDentified (DID) that anchors all other signals of a person's digital life. Without it, identities fragment across wallets and platforms. With it, every credential, badge, and validator can resolve back to one root.

A Passport is not limited to a single wallet. People often use multiple addresses for different purposes, like trading, governance, long-term storage. The Passport links these addresses into one coherent whole. So a governance vote from one account, liquidity provision from another, and NFTs ownership from a third can all be understood as belonging to the same person.

The Passport can also link to external accounts when people choose to do so. Web2 handles, developer repositories, or membership credentials can be attached through zero-knowledge proofs, extending the range of verifiable activity without exposing private data. This means a Persona is not defined by one chain, or one environment, but can reflect the full scope of someone's contributions across the digital world.

Technically, the Passport is a smart contract deployed on the T-Rex chain. It is publicly visible, permisionless ot integrate, and serves as the single source of truth for a person's on-chain Persona. Other contracts, applications, or communities can query it directly through RPC calls, making it a standard primitive for identity across the ecosystem.

The Passport evolves over time. New wallets can be added, outdated connections can be revoked, and Badges are continuously minted or updated. This ensures the Persona is always fresh and not a frozen snapshot of the past.

With Passports, projects no longer have to guess who is behind an address. They can build rules, services, and experiences that target actual people rather than isolated wallets without any context.

And for users, the Passport offers portability and recognition: whatever they do, wherever they go, it can be represented and carried with them.