Cowrie Research

rarimo

4 min read

Rarimo

  • Name: Rarimo
  • URL: https://docs.rarimo.com/
  • Category: zk identity registry / passport-based proof-of-personhood middleware / privacy-preserving identity rollup / anonymous voting and reputation infrastructure
  • Summary: Rarimo is best understood not as just a passport app, but as a lower-layer zk-registry stack that tries to standardize private, provable statements and then expose that registry through narrower products like ZK Passport, ZK Graph, Bionetta, and Freedom Tool. Its core mechanism is a singleton-style ZK Registry on a dedicated rollup, plus use-case-specific registrars and client-side proving flows that let users commit identity, credential, or relationship data without revealing the raw data. That makes Rarimo a strong comparison case for Self Protocol, Human Passport, Sismo, Zupass, and other identity systems: the real control surfaces are not only the proof UX, but the registry-root publication path, registrar design, supported passport/document coverage, light-versus-full verification policy, and how downstream apps turn private commitments into voting, uniqueness, or credibility claims.
  • What it does:
    • Operates a permissionless ZK Registry that stores abstract private statements and commitments in a way that can later be proven without revealing the underlying data
    • Frames the registry as a dedicated ZK Rollup anchored to Ethereum, with state roots that can be synchronized to other chains for cross-ecosystem verification
    • Offers ZK Passport, which turns biometric passports into selective-disclosure identity credentials for proving uniqueness, humanity, citizenship, age, and other passport-derived facts
    • Uses two passport onboarding modes: full verification, where the client proves passport validity and integrity, and light verification, where a trusted Rarimo verifier checks issuer signatures while the client still proves integrity
    • Exposes adjacent application layers including ZK Graph for private reputation proofs, Bionetta for client-side ZKML, the Rarimo App as a self-sovereign identity wallet, and Freedom Tool for privacy-preserving voting
    • Builds toward an ERC-7812-style registry pattern where multiple application-specific registrars can share one standardized evidence layer instead of each identity app inventing its own isolated proof store
  • Key claims:
    • Rarimo’s most useful primitive is the registry-and-registrar split. The docs repeatedly frame the core system as a generic statement registry rather than a single product, which makes it a better analytical comparison point for identity middleware than a simple “passport proof app” label would.
    • The full-versus-light verification split is especially important because it shows where decentralization gives way to compatibility. In light mode, a trusted Rarimo verifier checks passport issuer signatures when mobile hardware cannot handle the full path efficiently.
    • The ZK Passport docs explicitly argue for a global shared Merkle tree of passport hashes to create a “privacy network effect,” where more users and more applications make dictionary attacks harder. That is a more specific mechanism claim than generic privacy marketing.
    • The ERC-7812 draft matters because it makes Rarimo legible as a standards-oriented attempt to define a singleton evidence layer for private provable statements, not just a product bundle. That is the strongest reason to keep it in the active corpus.
    • The passport-zk-circuits repository shows that real-world passport proving is messy: different data-group layouts, signature schemes, active-auth support, and document families require parameterized verification flows. Document-support coverage and verifier fallbacks are therefore real governance and compatibility surfaces.
    • Rarimo is useful in the corpus because it separates several layers that identity discussions often flatten together: registry storage, registrar logic, local proof generation, trusted-verifier fallback, document authenticity, proof portability, and downstream app-specific nullifier / voting / reputation design.
  • Whitepaper: No single canonical Rarimo whitepaper surfaced in this pass. The strongest primary materials were the official docs for the ZK Registry and ZK Passport, the ERC-7812 draft, and the passport-circuit repository; see ../whitepapers/rarimo-primary-sources-2026-05-10.md.
  • Sources:

Internal linkages

  • Best read beside self-protocol and zkpassport.

  • Best used when registry-root publication, registrar policy, and trusted-verifier fallback matter more than the proof wallet.

  • Last reviewed: 2026-05-10 UTC

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