Sumsub

Sumsub is an all-in-one identity verification, KYB, and compliance platform that eliminates repetitive onboarding by letting users complete a single verification and carry those credentials wherever they go — including into decentralized applications on Solana.

Background

Founded in London in 2015, Sumsub began as a tool for detecting manipulated graphics before pivoting into identity verification. The company was co-founded by Andrew Sever (CEO), Jacob Sever (Chief Innovation Officer), Peter Sever (Chief Strategy Officer), and Vyacheslav Zholudev (Chief Technical Officer, Ph.D. in Computer Science). The platform now operates across offices in London, Singapore, Riga, Limassol, Berlin, Miami, Dubai, and Tel Aviv, serving 4,000+ businesses across 220+ countries.

The Problem

Regulated industries — from fintech and crypto exchanges to iGaming platforms and marketplaces — are legally required to verify the identity of their users before granting access. Each business typically runs those checks independently, forcing users to re-upload documents, retake selfies, and wait for manual review every time they onboard a new platform. Simultaneously, compliance teams face growing pressure from AML regulators, with increasingly complex workflows to manage at scale. For Web3 specifically, the absence of a reusable, privacy-preserving identity layer creates a structural barrier: every dApp must either skip KYC and risk regulatory exposure, or rebuild onboarding infrastructure from scratch.

Core Platform

Sumsub provides a configurable verification stack built around three pillars:

User Verification (KYC): Document checks against 14,000+ document types in 50+ languages, biometric liveness detection, deepfake screening, address confirmation, video identification, and non-document age estimation. The platform achieves a 93% first-attempt verification rate and can reduce onboarding time from ten minutes to roughly thirty seconds per applicant.

Business Verification (KYB): Automated workflows for verifying companies, including UBO (ultimate beneficial owner) mapping, registry lookups, and document collection — supporting regulated fintech and institutional onboarding flows.

Transaction Monitoring and AML: Ongoing screening for suspicious activity with crypto-specific tools including Travel Rule analysis, blockchain transaction monitoring, and flagging against global watchlists. Sumsub integrates AML screening directly alongside identity checks rather than treating them as a separate product, reducing the vendor overhead for compliance teams.

The platform exposes all capabilities through REST APIs, web and mobile SDKs, and a no-code workflow builder. A unified Cockpit dashboard lets compliance officers configure verification rules, review flagged cases, and access analytics without writing code.

A 2024 Forrester Total Economic Impact study documented 240% ROI with a sub-six-month payback period for Sumsub customers.

Reusable Digital Identity and the Solana Integration

In March 2025, Sumsub launched Sumsub ID — a Reusable Digital Identity suite designed to let users verify once and reuse those credentials across participating platforms without re-submitting documents.

The Solana-specific implementation, publicly demonstrated at the Solana Accelerate conference in New York in May 2025, integrates with the Solana Attestation Service (SAS) — an open, permissionless protocol for issuing verifiable credentials on-chain. The flow works as follows:

1. A user completes standard KYC verification with Sumsub.
2. They link their verified identity to a self-hosted Solana wallet.
3. Sumsub issues a blockchain-based attestation tied to that wallet address.
4. Participating dApps read the attestation to confirm identity status without the user re-submitting any documents.

Personal data never touches the chain. The attestation functions as a verified signal — confirming that the wallet holder has passed identity checks with a trusted provider — while keeping underlying documents private. Future iterations are expected to incorporate zero-knowledge proofs for additional privacy guarantees.

The live demonstration at Solana Accelerate featured Roam, a virtual SIM provider, where a user who had already completed Sumsub KYC linked their wallet and instantly onboarded to Roam without a second verification step. Sumsub Chief Growth Officer Ilya Brovin described the integration as "a key first stepping stone in evolving reusable digital identity" for Web3 users.

According to Sumsub, the reusable identity model reduces onboarding time by up to 50% and boosts conversion rates by up to 30% relative to traditional per-platform KYC flows.

Cross-Chain Expansion

In May 2026, Sumsub announced a partnership with Chainlink to extend privacy-preserving identity credentials to Ethereum, Arbitrum, Avalanche, Polygon, and Base through Chainlink's Automated Compliance Engine (ACE) and Cross-Chain Identity (CCID) framework. Under that model, users complete Sumsub KYC and prove wallet ownership by signing a message; Chainlink ACE then issues a CCID credential encoding verified claims such as "Age > 18" without exposing raw personal data. A single verified identity can link to multiple wallets.

Phase 1 of the Chainlink rollout targets retail users. Phase 2, planned for summer 2026, transitions to asset issuers enforcing eligibility rules for tokenized asset access.

Fit in the Solana Ecosystem

Solana's throughput and low transaction costs make it a natural host for on-chain identity infrastructure that needs to scale to millions of verifications. The Sumsub SAS integration addresses a concrete gap for Solana-based applications in regulated markets: dApps in DeFi, NFT marketplaces, token issuers conducting compliant sales, and consumer Web3 products requiring age or identity gating can tap into Sumsub's existing global KYC network rather than building compliance workflows from scratch.

As token issuers, RWA platforms, and regulated DeFi protocols continue to enter the Solana ecosystem, portable on-chain identity attestations issued by an established compliance provider represent a foundational building block for permissioned use cases. Sumsub's track record across 4,000+ institutional clients and its coverage across crypto, fintech, and iGaming means Solana applications can inherit compliance infrastructure that has already been stress-tested at production scale.