What you can prove

Issuer: Government ID registry, passport authority, or verified identity provider.
Prover: You — holding a credential with your date of birth.
Verifier: Any service, website, or smart contract requiring an age gate.

That your age satisfies a threshold (e.g., ≥ 18, ≥ 21, ≥ 65). The circuit encodes the inequality constraint. Nothing else is revealed — not your actual age, not your name, not your date of birth.

Age-gated content platforms · alcohol and tobacco retail · DeFi protocol access · online gaming · Liberland voting eligibility · contract execution rights.

Issuer: Liberland e-Citizenship registry or equivalent jurisdiction authority.
Prover: A citizen holding a digitally-signed citizenship credential.
Verifier: Liberland smart contracts, DAOs, or services requiring jurisdictional membership.

That a valid citizenship credential exists for the stated jurisdiction. Your name, passport number, physical address, and any other attributes remain private. The verifier only learns: "this person holds Liberland citizenship."

DAO membership gates · Liberland governance participation · jurisdiction-specific contract eligibility · tax-residency claims · selective access to services available only to citizens.

Issuer: LiberVault — signing a balance credential based on on-chain state.
Prover: A wallet holder proving their holdings without exposing their address.
Verifier: DeFi protocols, DAOs, lenders, or any service requiring collateral proof.

That your wallet balance exceeds a threshold at a given block height. The proof commits to the balance constraint without revealing the actual balance, your wallet address, or your identity. The circuit enforces balance - threshold ≥ 0.

DeFi protocol access tiers · DAO governance voting weight · collateral proof for loans · KYC-free accredited investor verification · Liberland merit-based governance participation.

Issuer: A licensed KYC provider (Onfido, Jumio, or similar) that issues a signed credential after verification.
Prover: You — holding one KYC credential reusable across all verifiers.
Verifier: Any regulated service requiring AML/KYC compliance.

That a licensed KYC provider successfully verified your identity, at a specific date. The verifier learns only: "this person passed KYC." Your documents, name, nationality, and personal data are never re-transmitted. One verification — unlimited proofs.

Crypto exchange onboarding · regulated DeFi protocol access · financial services · cross-border service eligibility · regulated securities platforms.

Issuer: University, certification body, professional licensing board, or employer.
Prover: A credential holder proving qualification without sharing the credential document.
Verifier: Employers, platforms, DAOs, or clients requiring verified qualifications.

That a credential from a recognized issuer is valid and not expired. The proof can optionally include claims like credential type or level without revealing the institution, graduation year, grade, or your identity. Expired credentials fail the validity check automatically.

Freelance platform verification · professional service marketplaces · DAO contributor vetting · medical licensing for telehealth · legal practice verification · engineering license attestation.

Issuer: Liberland governance registry or citizenship authority issuing an eligibility credential.
Prover: An eligible voter who wants to participate anonymously.
Verifier: On-chain voting contracts that enforce one-vote-per-person without tracking identities.

That a valid eligibility credential exists, is not expired, and satisfies the governance requirements. A nullifier prevents double-voting — each credential can generate only one proof per election — without linking the voter to any specific vote. Anonymous but accountable.

Liberland parliamentary elections · DAO governance proposals · quadratic voting systems · merit-weighted voting with privacy · referenda with anonymous-but-verified turnout tracking.