We build decentralized identity systems for Web3. Verifiable credentials, soul-bound tokens, on-chain reputation, and privacy-preserving identity verification.
Identity is the missing layer of Web3. While blockchain provides trustless transactions, most applications still lack robust mechanisms for establishing who users are, what credentials they hold, and what reputation they have earned. Arthiq builds decentralized identity solutions that fill this gap — enabling sybil resistance, access control, reputation systems, and compliance without sacrificing user privacy or decentralization.
Our identity work spans multiple approaches — Decentralized Identifiers (DIDs) for self-sovereign identity, Verifiable Credentials (VCs) for portable attestations, Soul-Bound Tokens (SBTs) for non-transferable on-chain credentials, and zero-knowledge proofs for privacy-preserving verification. We select and combine these tools based on your application's specific identity requirements.
Whether you need KYC verification for a regulated protocol, sybil resistance for a governance system, reputation scoring for a marketplace, or credential verification for a professional network, our team delivers identity infrastructure that balances security, privacy, and user experience.
Soul-Bound Tokens (SBTs) are non-transferable tokens that represent credentials, achievements, or affiliations permanently associated with an address. We build SBT systems for protocol participation records, educational certifications, governance participation history, and community membership attestations.
Our SBT contracts include configurable issuance authorities, revocation mechanisms for expired or invalidated credentials, and privacy controls that allow holders to selectively reveal their credentials. We implement both public SBTs for transparent reputation and private SBTs that use zero-knowledge proofs for selective disclosure.
SBTs can serve as the foundation for on-chain reputation systems. We build reputation scores that aggregate multiple credential types — governance participation, protocol usage, community contributions, professional certifications — into a composable reputation profile that other applications can query and verify.
For applications that need portable, standards-compliant identity, we implement W3C Decentralized Identifiers (DIDs) and Verifiable Credentials (VCs). DIDs provide self-sovereign identifiers that users control without depending on a central authority. VCs are cryptographically signed attestations that can be verified by any party without contacting the issuer.
Our VC implementations support multiple credential types — identity verification, professional certifications, financial accreditations, and custom attestations. Credentials can be stored in user wallets, presented selectively to requesting applications, and verified on-chain through smart contract verification logic.
We also build credential issuance infrastructure for organizations that need to issue verifiable credentials — educational institutions certifying completion, DAOs attesting to governance participation, or protocols confirming user activity levels. The issuance process includes identity verification, credential generation, and on-chain anchoring.
Many identity use cases require proving something about yourself without revealing the underlying data. We implement zero-knowledge proof systems for privacy-preserving verification — proving you are over 18 without revealing your age, proving you are an accredited investor without revealing your net worth, or proving you are a unique human without revealing your real-world identity.
Our ZK identity implementations use established proof systems and integrate with on-chain verification contracts. Users generate proofs locally, and verifiers check proof validity on-chain without learning anything beyond the verified claim. This approach meets regulatory requirements while protecting user privacy.
For sybil resistance in governance and airdrops, we implement proof-of-personhood systems that verify unique human participation without collecting personal data. These systems can use biometric verification, social graph analysis, or trusted credential attestation depending on the required assurance level.
Identity infrastructure is only valuable when it is used by applications. We build identity integration layers that make it easy for dApps to query credentials, verify proofs, and gate access based on identity attributes. Our SDKs provide simple APIs for common identity operations — check if a user has a specific credential, verify a zero-knowledge proof, or query a reputation score.
We also build identity management interfaces where users can view their credentials, manage visibility settings, and present credentials to requesting applications. These interfaces work across multiple wallet providers and support both on-chain and off-chain credential storage.
Arthiq builds identity infrastructure that enables the next generation of Web3 applications. Our Singapore-based team combines cryptographic expertise with product design to create identity systems that are both secure and usable. Contact founders@arthiq.co to discuss your identity requirements.
We build identity systems for Web3 — SBTs, verifiable credentials, ZK proofs, and reputation scoring. Identity that respects privacy.