Sumsub has joined the idOS Consortium and made a strategic contribution to become a member of the idOS Association Governance Committee, deepening its push into reusable identity infrastructure for Web3.
The move builds on several months of production work between Sumsub and idOS and extends Sumsub’s broader identity strategy beyond verification products into the governance layer of decentralised identity infrastructure.
The announcement is more important than a routine consortium membership. It reflects one of the biggest unresolved problems in crypto compliance: users are still forced to complete separate KYC checks across wallets, exchanges, on-ramps, banking modules and regulated Web3 applications.
Why Reusable KYC Matters
Know-your-customer checks are necessary for regulated financial services, but repeated identity verification creates friction for users and higher acquisition costs for businesses.
In Web3, the problem becomes worse because a single wallet or application may connect users to multiple regulated services. A user may need identity checks for a fiat on-ramp, a crypto exchange, a card product, a bank account module, a lending service or a tokenized asset platform.
Reusable identity aims to solve this by allowing users to verify once and reuse that verification across multiple services, without every provider collecting the same personal data again.
| Current KYC Model | Reusable Identity Model |
|---|---|
| User verifies separately with every service | User verifies once and reuses proof across services |
| Repeated document uploads | Portable identity credentials |
| Higher onboarding abandonment | Lower onboarding friction |
| More duplicated personal data storage | Less repeated data collection |
| Higher acquisition and compliance costs | Potentially lower compliance operating costs |
Sumsub Moves Deeper Into Onchain Identity
Sumsub has spent the past year expanding its onchain identity work across several ecosystems. The company has rolled out attestation integrations across Solana through the Solana Attestation Service, Linea through the Verax attestation protocol, and Chainlink’s ACE Cross-Chain Identity framework.
Joining the idOS Consortium adds another layer to that strategy because idOS is provider-agnostic infrastructure. It is designed to work with multiple verification providers rather than locking identity to a single compliance vendor.
Ilya Brovin, Chief Growth Officer at Sumsub, said: “We’ve spent the past year proving that verified identity can travel with the user instead of being re-collected at every door, both off-chain and on-chain.”
Education: What Is Reusable Identity?
Reusable identity is a model where a user’s verification status can be carried across services.
The user still completes compliance checks. The difference is that the result of those checks can be reused in a privacy-preserving way, rather than forcing the user to submit the same documents repeatedly.
In a Web3 context, this may involve attestations, credentials or cryptographic proofs that confirm a user satisfies certain requirements, such as being verified, being over a certain age, not being from a restricted jurisdiction or meeting a compliance threshold.
The goal is to prove eligibility without exposing unnecessary personal information to every application.
Why Privacy Is The Hard Part
Portable KYC creates a difficult balance.
Regulated firms need confidence that users have been properly verified. Users do not want their identity documents copied across dozens of platforms. Regulators expect compliance controls. Web3 applications want composability and user control.
That means reusable identity is not only an engineering problem. It requires cryptography, compliance, governance and privacy design to work together.
Lluis Bardet, Co-Founder of idOS, said: “Re-usable KYC isn’t just an engineering problem – it lives at the intersection of cryptography, compliance, and privacy, and you only solve it by moving all three forward at once.”
Why idOS Matters
idOS is an identity infrastructure layer designed to be provider-agnostic. That means it can integrate with different verification providers and support reusable credentials across multiple Web3 services.
For regulated crypto products, that is important because firms may not want identity infrastructure controlled by only one vendor or one application.
As a member of the idOS Consortium, Sumsub will contribute to the development of the project’s open-source technology stack alongside other consortium members. Its governance role gives it a voice in how reusable identity rails evolve for regulated Web3 use cases.
Where This Could Be Used
| Use Case | Why Reusable KYC Helps |
|---|---|
| Crypto wallets | Users can access multiple regulated modules without repeating verification |
| Fiat on-ramps | Reduces onboarding friction and conversion loss |
| Banking modules | Supports embedded financial products inside wallets |
| Tokenized securities | Helps enforce eligibility and transfer restrictions |
| DeFi lending | Allows compliant access controls without rebuilding identity from scratch |
| Cross-chain applications | Lets identity proofs travel across multiple networks |
Why This Matters For Regulated Web3
Crypto’s next growth phase is increasingly tied to regulated products: stablecoins, tokenized securities, onchain credit, wallet-based banking, real-world assets and institutional DeFi.
All of these products require some version of identity, eligibility or compliance screening. If every app forces users through a separate KYC process, adoption becomes slower and more expensive.
Reusable identity could become one of the core infrastructure layers that makes regulated Web3 usable at scale.
The Risk: Identity Portability Can Create New Concentration Points
Reusable KYC also introduces risks.
If identity credentials become portable, users and applications need confidence that the underlying verification was reliable, that data is protected, that credentials cannot be abused, and that governance rules are clear.
There is also a concentration risk. If many applications depend on the same identity infrastructure, outages, governance failures or data security issues could affect a wide part of the ecosystem.
That is why provider-agnostic and open-source approaches may become important. They reduce the risk that reusable identity becomes another closed compliance silo.
Outlook
Sumsub joining the idOS Consortium shows that reusable identity is moving from theory into infrastructure.
The first phase of crypto compliance was built around repeated onboarding checks. The next phase is likely to be built around portable credentials, selective disclosure and reusable attestations that allow verified users to move across regulated services with less friction.
That shift will matter for wallets, exchanges, fintechs, tokenized asset platforms and DeFi protocols trying to serve mainstream users without abandoning compliance requirements.
If reusable KYC works, Web3 onboarding could become less repetitive, less expensive and more privacy-preserving. If it fails, regulated crypto products may remain trapped between two bad options: weak compliance or endless identity checks.
Sumsub and idOS are betting that the middle path is possible.
