SSI-Gated Financial Data Marketplace

Credential-Verified Access to
Bloomberg-Quality Data On-Chain

OHNexus bridges institutional financial data and decentralised finance through Self-Sovereign Identity — so only verified participants access premium data feeds.

View Investment Opportunity See How It Works

The Problem

Financial Data Is Locked Behind Gatekeepers

High-quality financial data feeds require expensive institutional subscriptions with no trustless verification, no on-chain auditability, and no privacy for end users.

💰

Prohibitive Cost Barriers

Bloomberg Terminal alone costs $25K/year per seat. DeFi protocols cannot access institutional-grade data without centralised intermediaries, defeating the purpose of decentralisation.

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No Identity Verification

Existing oracles have no gating mechanism. Anyone — including bots and unverified actors — can query data feeds, creating compliance risk and undermining market integrity.

🕵️

Privacy Violations

KYC data stored by centralised providers creates honeypots. GDPR Art. 25 mandates privacy by design — legacy data providers hold raw PII they never needed to retain.

⛓️

No On-Chain Auditability

When a smart contract uses off-chain data, there is no verifiable proof that the right data was used. Dispute resolution is impossible without an immutable execution record.

The Solution

OHNexus: SSI-Gated Financial Data, On-Chain

A credential-verified marketplace where identity is proven once, data flows freely, and every execution is anchored immutably on Ethereum.

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Self-Sovereign Identity Gates

Users hold their own W3C Verifiable Credentials in a browser-native wallet. Zero raw PII stored — only cryptographic proofs. Services define credential requirements; the platform enforces them at invocation time.

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Bloomberg Oracle Integration

Sepolia events trigger the oracle runner, which fetches Bloomberg data via API, stores results in S3, and fulfils requests on-chain — with exponential-backoff retries and idempotency guarantees.

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Privacy by Design

Raw VP JWTs are never stored — only SHA-256 hashes for audit correlation. Claim summaries pass a two-pass PII filter before any DynamoDB write. GDPR Art. 25 compliance is structural, not procedural.

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On-Chain Execution Anchoring

Every authorised invocation emits a ServiceExecuted event on Ethereum with a deterministic execution ID and result hash — permanent, tamper-evident proof of data delivery.

How It Works

Three Layers. One Protocol.

Verification, eligibility evaluation, and execution are strictly separated — no layer can bypass another.

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Verify Identity

User generates a browser-native Ed25519 DID. A Verifiable Presentation proves credentials via OID4VP direct_post — no raw data leaves the browser.

✅

Evaluate Eligibility

The eligibility engine checks credential types, issuer trust, claim values, and expiry against service requirements. Result: GRANTED or DENIED with structured reasons.

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Execute Service

On AUTHORIZED, the provider executor calls the publisher's HTTPS endpoint (with Secrets Manager auth). A Verifiable Credential is auto-issued and signed in-process.

⛓️

Anchor On-Chain

The frontend calls registerExecution() on the Sepolia ServiceRequests contract. A SHA-256 result hash is anchored permanently with the execution ID.

Market Opportunity

A Multi-Trillion Dollar Convergence

Three fast-growing markets are converging at OHNexus: financial data, decentralised finance, and digital identity.

TAM — Financial Data

€2.4T

Global financial data market by 2027, growing 6.4% CAGR

SAM — DeFi Oracles

€38B

On-chain data and oracle segment addressable today

SOM — SSI Middleware

€420M

Credential-gated data access layer, Year 3 target

Digital Identity Market

€34B

Self-sovereign identity segment projected 2028

Technology

Production-Grade Infrastructure

Built on open standards. Audited for privacy. Deployed on AWS with full Terraform IaC.

Rust / actix-web W3C Verifiable Credentials OID4VP / OID4VCI did:key Ed25519 Ethereum / Solidity Bloomberg Oracle React 18 + Vite AWS ECS Fargate DynamoDB (PAY_PER_REQUEST) CloudFront + S3 + OAC Secrets Manager Terraform IaC GDPR Art. 25 MiFID II Ready Audens Legal Report

Traction

Built in the Open. Shipped Fast.

From zero to a full SSI-gated marketplace protocol with on-chain execution anchoring — in a single development cycle.

Q4 2025 — M0

Protocol Inception

Architecture defined. Smart contracts deployed to Sepolia. Oracle runner integrated with Bloomberg API.

Q1 2026 — M2

SSI Layer Complete

Browser-native Ed25519 DID generation. OID4VP VP signing. OID4VCI credential issuance. 420 tests passing.

Q1 2026 — M3

Full Marketplace Live

Publisher onboarding, credential-gated service invocation, on-chain execution anchoring, auto-issued VC JWTs. 566 tests passing.

Q2 2026 — M4

Seed Round & First Publisher Partners

Targeting 3 institutional data publishers. Legal framework validated by Audens. Seeking €500K seed.

Q4 2026 — M7

Series A Target

10+ active publishers. EU regulatory engagement. First MiFID-compliant data service on-chain.

2027 — M13

Protocol Maturity

Multi-chain deployment. DAO governance. Institutional DeFi integrations. €420M SAM penetration begins.

Investment Opportunity

We Are Raising

€500K

Seed Round — SAFE / Convertible Note

40% Engineering — core protocol, audit, scaling
25% Business Development — publisher partnerships
20% Regulatory & Legal — MiFID II, eIDAS 2.0
15% Operations & Infrastructure — AWS, Bloomberg

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Credential-Verified Access to Bloomberg-Quality Data On-Chain