DobValidator

DobValidator is an AI-powered verification platform that provides trusted attestation for real-world assets (RWAs). It bridges the gap between physical infrastructure and blockchain-based tokenization by offering a structured review, scoring, and certification pipeline.

Live at: validator.dobprotocol.com

Purpose

Before a real-world asset can be tokenized and traded on DobProtocol, it needs to be verified. DobValidator answers the fundamental question: Is this asset real, compliant, financially viable, and environmentally sound?

The platform produces a TRUFA score -- a composite metric across four dimensions -- and issues a tamper-proof certificate anchored on-chain. This certificate can then be linked to distribution pools on Token Studio or referenced by the DobDex for oracle-backed pricing.

Architecture

DobValidator is a standalone application with its own frontend and backend:

Layer	Technology	Details
Frontend	Next.js 15	React-based UI with server components
Backend	Express.js	RESTful API with middleware-based auth
ORM	Prisma	Type-safe database access
Database	PostgreSQL	Hosted on Google Cloud SQL
Storage	Google Cloud Storage	Document and file attachments
Auth	Wallet-based	Freighter (Stellar) and MetaMask (EVM)

Cross-Platform SSO

DobValidator shares authentication with the main DobProtocol platform through a cross-subdomain SSO mechanism:

• A dob_auth_token cookie is set on the .dobprotocol.com domain
• JWT payloads include walletAddress, source, and provider fields
• Users who authenticate on home.dobprotocol.com are automatically signed in on validator.dobprotocol.com and vice versa

Core Pipeline

The verification process follows a linear pipeline from submission to on-chain attestation:

Submission --> Review --> Scoring --> Certificate --> On-Chain Attestation
   (User)     (Admin)    (TRUFA)     (SHA-256)      (Stellar / EVM)

1. Submission -- Asset owners fill out a multi-step form describing the device, location, financials, and supporting documents.
2. Review -- Validators (admins) review the submission data and attached evidence.
3. Scoring -- Each submission is scored across the four TRUFA dimensions (0--100 each), producing a composite score.
4. Certificate -- A SHA-256 hash is computed over the canonical submission data and scores, then a PDF certificate is generated with a QR code for public verification.
5. On-Chain Attestation -- The certificate hash and TRUFA scores are written to the DOBValidator.sol smart contract on supported EVM chains, and optionally to Stellar Soroban.

Wallet-Based Authentication

DobValidator uses wallet signatures for authentication rather than passwords:

• Freighter -- For Stellar-native users. Signs a challenge message with the user's Stellar keypair.
• MetaMask -- For EVM-native users. Signs a challenge message via personal_sign.

No email or password is required. The wallet address serves as the user's identity across the platform.

Integration with Token Studio

Once a certificate is issued, it can be linked to a distribution pool on Token Studio:

• Pool creators can attach a certificate hash during pool creation or afterward via the pool dashboard
• The TRUFA score badge appears on pool cards across the marketplace
• The certificate hash is stored in the pools table (validator_certificate_hash, validator_overall_score, etc.)
• A public verification endpoint allows anyone to verify a certificate's authenticity

Deployment Targets

On-chain attestation is supported on the following networks:

Network	Contract	Status
Ethereum Sepolia	DOBValidator.sol	Deployed
Polygon Amoy	DOBValidator.sol	Deployed
Base Sepolia	DOBValidator.sol	Deployed
Base Mainnet	DOBValidator.sol	Deployed
Stellar Soroban	Planned	In development

Next Steps

• Submission Process -- How asset owners submit data for verification
• TRUFA Scoring -- The four-dimensional scoring methodology
• Certificates -- Certificate issuance, verification, and on-chain anchoring