DOS Chain RWA - Regulated Digital Securities Platform

Qwen AI Build Day x Shinhan Bank Hackathon 2026 - Track SS6: Digital Assets & Tokenized Securities

Live Demo: rwa.doschain.com Explorer: doscan.io

What is this?

A full-stack Security Token Offering (STO) platform on DOS Chain (Avalanche L1) that enables financial institutions to issue, manage, and trade tokenized securities with AI-powered compliance.

Upload a bond prospectus PDF, AI extracts parameters, checks regulatory compliance (Vietnam + Korea), and deploys an ERC-3643 security token on-chain - all in one flow.

Architecture

User -> DOS.Me SSO Login -> Upload PDF
  -> Qwen AI (document extraction) -> Review & Edit
  -> Qwen AI (compliance check VN/KR) -> Compliance Report
  -> Backend wallet -> TREXFactory.deployTREXSuite() -> On-chain token
  -> DOScan (verify on explorer)

Key Features

• AI Document Processing - Qwen 3.5-35B extracts bond parameters from PDF prospectuses
• Automated Compliance - AI checks against Vietnam Digital Technology Law 2025, Resolution 05/2025, and Korea Capital Markets Act
• Real On-Chain Deployment - Backend wallet deploys ERC-3643 tokens via TREXFactory on DOS Chain mainnet
• On-Chain Identity (ONCHAINID) - Each investor gets ERC-734/735 smart contract identity with signed KYC/AML claims
• Gasless Transactions - ERC-4337 paymaster for whitelisted investors
• Cross-Chain - ICTT bridge to Avalanche C-Chain and Ethereum
• Full On-Premise - Everything can be self-hosted (blockchain nodes, AI models, identity services)
• Bilingual - Vietnamese / English

Technology Stack

Technology	Purpose
ERC-3643 (T-REX)	Security token standard - DTCC & SEC recognized
ONCHAINID	On-chain identity with signed claims (ERC-734/735)
DOS Chain	Avalanche L1 - Chain ID 7979, 1s blocks, gasless
Qwen 3.5-35B	AI document processing & compliance checking
DOS.Me ID	SSO authentication - no crypto wallet needed
ICTT Bridge	Cross-chain token transfers
ERC-4337	Account abstraction - gasless for investors
Next.js 16	Web application framework

Deployed Contracts (Mainnet - Chain ID 7979)

Contract	Address
TREXFactory	0x7979539f...3643
Token Implementation	0x6233...037D
Identity Registry	0x8a59...0C39
Modular Compliance	0x9BCD...234c
IdFactory	0xcCA7...4C0

See contracts/deployments/ for full deployment details.

Project Structure

app/                          # Next.js 16 DApp
  src/
    app/
      page.tsx                # Landing page
      issuer/page.tsx         # Issuer portal
      investor/page.tsx       # Investor portal + AI chat
      compliance/page.tsx     # Compliance dashboard
      api/
        process-document/     # PDF extraction via unpdf + Qwen AI
        check-compliance/     # Regulatory compliance via Qwen AI
        deploy-token/         # Backend wallet deploys ERC-3643
        chat/                 # AI investment advisor (Qwen 3.5-35B)
    components/
      upload-prospectus.tsx   # 4-step upload/review/compliance/deploy flow
      auth-button.tsx         # DOS.Me SSO login
      lang-switcher.tsx       # VI/EN toggle
    lib/
      i18n.ts                 # Full VI/EN translations
      ai-client.ts            # AI service client
      auth-context.tsx        # Supabase auth state
  public/
    samples/                  # Sample prospectus PDFs for demo
contracts/
  script/                     # Foundry deployment scripts
  deployments/                # Deployed contract addresses
docs/
  hackathon-about.md          # Devpost submission content
  customer-solution-deck-content.md  # Pitch deck

Getting Started

cd app
cp .env.example .env.local
# Edit .env.local with your keys
pnpm install
pnpm dev

Environment Variables

NEXT_PUBLIC_SUPABASE_URL=         # Supabase auth URL
NEXT_PUBLIC_SUPABASE_PUBLISHABLE_KEY=  # Supabase publishable key
NEXT_PUBLIC_API_URL=              # DOS.Me API URL
DOS_AI_API_KEY=                   # Qwen AI API key (dos.ai gateway)
DEPLOYER_PRIVATE_KEY=             # Backend wallet for token deployment

Sample Files

The demo includes 4 sample prospectus PDFs:

• Corporate Bond (VI) - Shinhan Securities Vietnam, 9.5%, compliant
• Government Bond (VI) - State Treasury, 7.2%, compliant
• REIT Fund (VI) - Shinhan Real Estate, 11.5%, compliant
• Non-Compliant (VI) - Cayman Islands entity, 24%, blocked by AI

Regulatory Framework

The AI compliance engine checks against:

• Vietnam Digital Technology Industry Law 2025 (effective 01/01/2026)
• Vietnam Resolution 05/2025 (5-year pilot for tokenized assets)
• Vietnam Securities Law 2019 & AML Law 2022
• Korea Capital Markets Act amendment (passed 01/2026, effective 02/2027)

Team

• DOS (dos.ai) - Blockchain infrastructure & AI

License

MIT