> Answers about MintID: zero-knowledge presentations, reusable KYC credentials, what the chain stores, key recovery, agent KYC (Know Your Agent) and the token. Questions # Frequently asked questions How MintID keeps identity off the chain while letting holders prove claims in zero knowledge — from issuers and assurance grades to key recovery, self-revocation and agent KYC. What is MintID? MintID is a sovereign, permissionless proof-of-stake Layer-1 for privacy-preserving, KYC-backed identity credentials. Does the chain store my identity documents? No. No raw KYC, PII, names, addresses, biometrics, credential payloads, serial numbers or presentation logs ever touch the chain. It carries only issuer/verifier records, status-root commitments, staking, governance and audit commitments. Who can issue credentials? Only KYC organisations approved by the compliance council — the "accepted issuers". What is a zero-knowledge presentation? The holder proves a claim (for example "grade ≥ A3", "over 18", or "credential active") against on-chain trust roots without revealing the underlying attributes or which credential was used. What are assurance grades A1–A4? A private four-level grade of how robust the identification was, mapped onto published frameworks: A1 is a validated identity document (eIDAS low, ISO/IEC 29115 LoA 2), A2 adds biometric liveness (eIDAS substantial, LoA 3), A3 adds sanctions, PEP and adverse-media screening (enhanced due diligence), A4 adds qualified proofing such as a high-assurance eID or the EU Digital Identity Wallet (eIDAS high, LoA 4). Only a commitment is public: a verifier receives a threshold proof such as "grade ≥ A3" without learning the exact grade unless the holder chooses to reveal it. What if I lose my keys? Recovery is only by fresh KYC re-verification, which issues a new, publicly unlinkable credential. No one custodies your keys for you. Can I revoke my own credential? Yes. Holder self-revocation works without issuer cooperation and reveals neither your identity nor a normal credential identifier. How long is a presentation valid? Ten seconds — bound to a unique challenge, the exact audience and origin, the requested policy, the current issuer status root and a finalized chain height. What is agent KYC (Know Your Agent, KYA)? Agent KYC is MintID’s implementation of Know Your Agent (KYA): a human does KYC once, then mints many privacy-preserving agent credentials. Each agent proves it is backed by a KYC-verified, liable human principal at assurance ≥ G within delegated scope S — without revealing which human, and without sibling agents being linkable. Is there a token, and is it live? There is a native token with a hard-capped (108,000,000), declining monetary policy; rewards are on-chain consensus rewards. The genesis allocation is ratified as bands with argued working points inside them — 15% development and team, 25% public tranche, 60% validator emission pool — and the independent economic simulation validates every point before genesis. Nothing is for sale: no sale, no pre-sale, no price, no date — as a matter of ratified policy, the only route by which an offer could ever exist is the complete EU MiCA Title II process. No mainnet before independent application, cryptography, infrastructure and economic audits. Nothing here is financial advice or an offer of securities. Do testnet tokens have any value? No. Testnet tokens are free, unlimited, and worthless — deliberately. They exist so developers and validators can exercise the network, will never convert into any future mainnet token, and may be deleted at any time through test-network resets. Does a grade expire or decay with time? No. Grades measure strength, never age — no standard tiers identity proofing by how old it is. Freshness is a second axis, reported as a band (F4 under 30 days, F3 under 90, F2 under 180, F1 under a year) rather than a date, so records cannot be correlated by timestamp. Each grade has a default validity (12 months for A1 and A2, 6 for A3, 3 for A4, within the EU anti-money-laundering update periods); once it lapses the credential is suspended, visibly, until a re-verification completes. Nothing is revoked by the calendar alone. --- Source: https://mintid.net/en/faq · FAQ — zero-knowledge identity, credentials & the token — MintID