Cross-Chain Passport
1. Lucia Cross-Chain Passport
The Lucia Cross-Chain Passport is a decentralized identity solution integrated into the Lucia Protocol, allowing users (known as passport holders) to securely manage and link their digital identities across both Web2 and Web3 environments. It is designed to enable seamless identity verification, data attribution, and secure data sharing while preserving user privacy.
The Lucia Cross-Chain Passport allows users to link and manage their Web2 (e.g., social media) and Web3 (e.g., crypto wallets) identities. It serves as a unified, decentralized identity that Passport Holders can use for identity verification, data sharing, and earning rewards. The passport uses ZK-proofs to maintain user privacy while enabling verifiable and secure data transactions.
2. Passport Holders
A Passport Holder is a user who owns a Lucia Cross-Chain Passport, which serves as a decentralized and verifiable digital identity. This passport aggregates a user's Web2 and Web3 data (such as social accounts, email addresses, and blockchain wallet addresses) into a privacy-preserving, unified identity. The passport allows users to share verified aspects of their identity with businesses, advertisers, or dApps without revealing their raw data.
2.1. Roles and Responsibilities of a Passport Holder
A Passport Holder participates in several important functions within the Lucia Protocol ecosystem:
2.2. Identity Verification
Passport Holders play a role in verifying their own identity within the protocol by connecting and validating multiple identity sources.
Self-Sovereign Identity (SSI): Passport Holders manage their own identity through the Lucia Cross-Chain Passport, which they can link to social media accounts, email addresses, Web3 wallets, and other identifiers. They remain in full control of what information they share with third parties, allowing them to retain ownership of their digital identity.
ZK-Proof Integration: Passport Holders use Zero-Knowledge Proofs (ZK-proofs) to confirm that certain attributes of their identity (such as their email or wallet) are valid without exposing any underlying personal data. This preserves privacy while maintaining trust.
2.3. Data Sharing and Monetization
Passport Holders can opt into sharing their data with businesses or advertisers, providing valuable insights while earning rewards.
Opt-In Data Sharing: Passport Holders choose which aspects of their identity to share with advertisers, marketers, or applications. For example, they might share behavioral data (e.g., browsing habits, past purchases) without revealing personal details like names or addresses.
Monetization of Data: By sharing identity data, Passport Holders can monetize their digital presence. Businesses pay for access to verified user data, and Passport Holders receive a share of this revenue in the form of LUCXtoken rewards. Each time their data is used for attribution purposes (such as ad targeting or user analysis), Passport Holders earn tokens.
2.4. Participation in Ad Attribution
Passport Holders are integral to the ad attribution process within Lucia Protocol. When they engage with online advertisements or interact with marketing content, their behavior is tracked through their passport, providing valuable insights for advertisers.
Privacy-Protected Attribution: Passport Holders' engagement with ads or campaigns is tracked without exposing their full identity. Instead, ZK-proofs are used to validate that a Passport Holder has interacted with an ad or converted from an ad click, allowing businesses to attribute customer behavior while preserving user privacy.
Cross-Chain Attribution: The Passport Holder’s actions can be attributed across different blockchains and platforms, enabling a holistic view of their behavior in decentralized applications (dApps) or Web2 websites.
2.5. Sybil Resistance
Passport Holders play a role in ensuring the integrity of the network by helping prevent Sybil attacks.
Unique Identity Verification: By verifying their identity across multiple platforms (e.g., linking social accounts, wallets), Passport Holders demonstrate their uniqueness in the network. This helps Lucia Protocol ensure that each user is a genuine individual and not a bot or part of a Sybil attack aimed at manipulating airdrops or rewards.
Airdrop Participation: Passport Holders can participate in airdrop campaigns and marketing initiatives without fear of being excluded due to fraudulent actors. Sybil-resistant verification ensures that airdrops only go to unique users with verified passports.
3. Non-Passport Holders
Non-Passport Holders are regular users of the Lucia Protocol who do not own a Lucia Cross-Chain Passport but may still engage with the platform in a limited capacity. They may interact with advertisements or access certain features, but they lack the full benefits of identity verification, data monetization, or access to Sybil-resistant rewards.
3.1. Responsibilities
Limited Engagement: Non-Passport Holders can engage with ads, but their data is not verifiable through the Lucia Cross-Chain Passport system, limiting their ability to participate in data monetization and ad attribution fully.
No Identity Verification: Non-Passport Holders do not link their identity to the protocol and therefore cannot share or monetize their data in the same way that Passport Holders do.
3.2. Requirements
Basic Platform Use: Non-Passport Holders can interact with the platform’s advertising or marketing services but are not required to verify their identity through the Lucia Cross-Chain Passport system.
3.3. Limitations
No Data Monetization: Since Non-Passport Holders do not provide verified identity data, they cannot monetize their interactions or participate in the rewards system.
No Airdrop Participation: Without a Lucia Cross-Chain Passport, Non-Passport Holders are not eligible for airdrop campaigns that require Sybil-resistant verification.
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