# SEDAX: Blockchain eKYC with Zero-Knowledge Proofs Case Study SEDAX is a blockchain eKYC platform using Zero-Knowledge Proofs, self-sovereign identity, and W3C Verifiable Credentials to verify identity without exposing personal data. Built by Metaborong. Canonical: https://www.metaborong.com/work/sedax Case study: sedax --- ## Direct Answer SEDAX is a blockchain eKYC platform that verifies identity with Zero-Knowledge Proofs, so users prove who they are without sharing the underlying personal data. Built on self-sovereign identity and W3C Verifiable Credentials, it replaces centralized document collection with privacy-first, reusable verification. Metaborong is the development partner that engineered [SEDAX](https://www.sedax.in/) from the ground up in 2026. As a decentralized identity platform, SEDAX stores no raw identity data. A user proves a claim, such as being over 18 or holding a nationality, and the verifier receives only a cryptographic confirmation. Credentials live in a user-controlled wallet, issuance and revocation are recorded on a tamper-evident ledger, and AI-assisted liveness and document checks guard onboarding, with alignment to GDPR and India's DPDP Act. --- ## The Problem Traditional identity verification was designed for a paper-based, centralized world. In digital environments it introduces privacy and security problems at every step: users repeatedly upload the same sensitive documents, personal data sits in centralized databases that become high-value attack targets, and third-party processors access more data than any single verification needs. Users have no control over how their identity data is stored or used after submission, and compliance with GDPR and India's Digital Personal Data Protection (DPDP) Act is structurally difficult when personal data is spread across vendor systems. Reusable KYC, where one verified credential works across services, is impossible in centralized architectures. The real engineering challenge was not a faster KYC tool: it was re-architecting verification so it can happen without exposing the underlying identity data itself. --- ## What Metaborong Built Metaborong engineered SEDAX as a blockchain-native identity infrastructure on three foundational layers: Zero-Knowledge Proof verification, where claims are validated cryptographically without revealing the raw data; self-sovereign identity, where users hold their own credentials and share only what each request needs; and a blockchain trust ledger, where issuance, verification, and revocation are recorded on a tamper-evident, decentralized layer independent of any central authority. ### Zero-Knowledge Proof Verification In a traditional KYC system a user shares a date of birth and the verifier stores it indefinitely. In SEDAX, a user proves they are over 18 and the verifier receives only a cryptographic confirmation: no date of birth is ever transmitted or stored. Metaborong engineered this verification across age, nationality and jurisdiction claims, professional credentials, financial eligibility, and biometric liveness, one party proving a statement is true without revealing anything beyond the truth of the statement itself. ### Self-Sovereign Identity and Verifiable Credentials Self-sovereign identity gives individuals, not corporations or governments, control over their own identity data. Rather than submitting documents to a third-party processor, users hold W3C Verifiable Credentials in a personal wallet and present only the credentials each interaction needs. SEDAX credentials are interoperable with other SSI-compliant systems, cryptographically signed by the issuer, verifiable without contacting the issuer, and support on-chain revocation without revealing user data. ### On-Chain Trust and Reusable KYC Credential issuance, verification events, and revocation are recorded on a tamper-evident blockchain ledger, creating an auditable trust layer no central authority controls. Because a verified credential is portable, one verification event can be reused across multiple services instead of repeating full document submission. On-chain audit trails, revocation for AML watchlist management, and structured verification logs give regulated institutions the accountability KYC/AML compliance requires. ### AI-Assisted Fraud Detection Alongside the ZKP layer, SEDAX integrates AI-assisted fraud detection. Document-authenticity analysis flags forged or manipulated identity documents, biometric liveness detection prevents photo, video-replay, and deepfake spoofing during onboarding, and behavioral risk scoring flags anomalous verification patterns. These checks reduce identity fraud without adding friction for legitimate users. --- ## Technical Approach Metaborong engineered SEDAX across three layers: a Zero-Knowledge Proof verification core, a self-sovereign identity wallet, and a blockchain trust ledger. Identity claims are validated cryptographically, so a verifier learns only that a statement is true, never the underlying data. Users hold W3C Verifiable Credentials in a user-controlled wallet and disclose only what each request needs, while credential issuance, verification, and revocation are recorded on a tamper-evident ledger independent of any central authority. AI-assisted liveness detection and document-authenticity analysis guard onboarding against spoofing and deepfake fraud. Re-architecting identity verification this way meant solving several problems at once: proving claims without transmitting personal data, giving users control over selective disclosure, supporting reusable KYC across services, and keeping on-chain audit trails for KYC/AML compliance. The result is a privacy-first identity layer where one verification can be reused across services, no central database becomes a single point of failure, and compliance with GDPR and India's DPDP Act is structural rather than bolted on. --- ## Results Metaborong delivered a production-ready, privacy-first identity infrastructure for SEDAX in 2026. - **Live in production.** SEDAX runs at [sedax.in](https://www.sedax.in/), a privacy-first blockchain eKYC platform. - **Engineered ground-up by Metaborong as development partner**. The Zero-Knowledge Proof verification core, self-sovereign identity wallet, on-chain trust ledger, and AI fraud-detection layer were built from the ground up. - Raw personal-data exposure during verification is reduced by design, since proofs confirm claims without transmitting the underlying data. - Users control which credentials are shared with which verifiers, replacing blanket document submission with selective disclosure. - Centralized identity storage as a single point of failure is eliminated, since credentials live in user-controlled wallets. - Reusable KYC lets one verification event work across multiple services instead of repeating full document checks. - Privacy compliance is structural, with alignment to GDPR and India's DPDP Act consent and data-minimization requirements. --- ## Frequently Asked Questions **What is Zero-Knowledge Proof identity verification?** Zero-Knowledge Proof is a cryptographic method that lets one party prove a statement is true without revealing any additional information. In identity verification, ZKP lets a user confirm they meet a requirement without sharing their underlying identity document or personal data. **What is self-sovereign identity (SSI)?** Self-sovereign identity is a digital identity model where individuals hold and control their own credentials in a personal wallet rather than relying on centralized identity providers, selectively sharing only the specific credentials each interaction needs. **What are Verifiable Credentials?** Verifiable Credentials are a W3C standard for digitally signed, cryptographically verifiable identity claims issued by trusted authorities and presented to verifiers without contacting the original issuer, forming the basis of interoperable, portable digital identity. **How does SEDAX support KYC/AML compliance?** SEDAX generates on-chain audit trails for all verification events, supports credential revocation for AML list management, and integrates AI-assisted fraud and liveness detection, providing the regulatory accountability KYC/AML compliance requires in regulated industries. **Is SEDAX relevant for Aadhaar-based KYC in India?** Yes. SEDAX's ZKP architecture lets Aadhaar-linked claims be verified without transmitting raw Aadhaar numbers, aligning directly with India's DPDP Act consent and data-minimization requirements. **What is reusable KYC?** Reusable KYC lets a user who has completed identity verification once reuse that verified credential across multiple services without repeating the full document submission, enabled by SEDAX's verifiable credential architecture. **Who built SEDAX?** Metaborong built SEDAX as development partner: the Zero-Knowledge Proof verification core, the self-sovereign identity wallet, the W3C Verifiable Credential and on-chain trust infrastructure, and the AI-assisted fraud-detection layer. Metaborong is an AI and blockchain engineering studio that ships production systems for startups and high-growth companies. --- ## Technologies **Identity and Security:** Zero-Knowledge Proof (ZKP), Blockchain Verification, W3C Verifiable Credentials, Self-Sovereign Identity (SSI), Decentralized Authentication **AI and Fraud Detection:** AI Fraud Detection, Liveness Detection, Behavioral Risk Analysis, Document Authenticity Verification **Platform Infrastructure:** Scalable Verification Workflows, Encrypted Credential Systems, Privacy-First Authentication Pipelines *Engineered by [Metaborong](/services) — an AI and blockchain engineering studio that ships production systems for startups and high-growth companies.* ---