zkOBSOpen Banking Services

zkOBS turns banking data into zero-knowledge proofs for credit, account ownership, investor accreditation, and asset levels. Protocols verify financial facts without receiving raw bank records.

Who uses zkOBS

Under-collateralized Lending

Offer under-collateralized DeFi loans based on verified credit scores and asset levels.

Regulated Token Offerings

Gate security token offerings and private placements by verifying accredited investor status on-chain.

Financial KYC Platforms

Replace document-based KYC with privacy-preserving open banking credentials.

Sub-Credentials

Explore the zkOBS credential suite

Proof of Credit Score
Docs
Verifiable creditworthiness without score exposure

Proves a credit score exceeds a threshold without revealing the actual value. Users prove loan eligibility without disclosing their full credit profile.

Use Cases
Under-collateralized lendingCredit-based access controlDeFi credit marketsRisk-adjusted rates
Proof of Account Ownership
Docs
Bank account ownership verification

Confirms bank account ownership without revealing account numbers, balances, or transaction history.

Use Cases
Financial KYCBank account linkingIdentity verificationFraud prevention
Proof of Accredited Investor
Docs
Investor accreditation status on-chain

Verifies income or net worth thresholds for accredited investor status. Enables regulated offerings to enforce eligibility on-chain.

Use Cases
Security token offeringsPrivate placementsRegulated DeFiInvestor gating
Proof of Account Assets
Docs
Asset level verification above a threshold

Confirms assets above a threshold without revealing the exact amount. Used for wealth-based access controls and collateral verification.

Use Cases
Wealth verificationCollateral confirmationHigh-net-worth gatingAsset-based lending
Proof of Account Transaction
Docs
Transaction history verification

Verifies transaction history patterns (income, payment behavior) without revealing individual transactions.

Use Cases
Income verificationPayment historyFinancial behaviorCreditworthiness assessment
How It Works

The zkOBS credential flow

1

User connects bank

User authorizes zkMe to access their banking data via an open banking API connection.

2

Data retrieved

zkMe retrieves the relevant financial data from the bank's API in a secure, ephemeral session.

3

ZK proof computed

A zero-knowledge proof is generated from the financial data. The raw data is immediately discarded.

4

Credential issued

The user's wallet receives the financial credential. The bank data is never stored.

5

Protocol verification

The DeFi protocol or financial service verifies the credential on-chain and grants access.

Protocols Using This Credential

Trusted by leading protocols

"zkOBS enabled StationX to offer verifiable financial credentials to DeFi protocols without exposing any underlying bank or brokerage data to the platform."

StationXVerifiable financial credentials for DeFi protocols
Case study

Ready to integrate zkOBS?

Access the full SDK documentation, integration guides, and onboarding checklist to start issuing zkOBS credentials in your application.