Three ways to tokenize a real asset

CityZeen supports three distinct tokenization models. Each serves different asset classes, investor profiles, and regulatory pathways.

Model 1 — AI Composite Score Token

The AI score token represents the CityZeen 18-criteria composite score of an asset, not direct ownership. It functions as an independent scoring product applicable across all three tokenization models.

Use cases: Benchmark product, institutional data licensing, Bloomberg-tier API access at €8,000/month.

Token standard: ERC-20 on Polygon PoS.

Model 2 — Digital Share / SPV Token

Each token represents a fractional ownership of a Special Purpose Vehicle (SPV) that holds the underlying real asset. This is the primary model for CRE, mixed-use, hospitality, and infrastructure assets.

Token standard: ERC-3643 (T-REX) or ERC-7518 on Polygon PoS, with built-in transfer restrictions for KYC compliance.

Yield distribution: Rental income distributed quarterly to token holders via SEPA or USDC. Distribution proportional to token holdings.

Model 3 — Surface-Area Token

One token = one square foot (or square metre) of LEED/green-certified real estate. Ideal for logistics warehouses, land, and residential CRE where surface area is the primary value driver.

Token inventory: 1 trillion CZT total announced. 100 billion available to customers now. Each CZT = 1 sq ft of LEED/green-certified CRE space, eliminating currency exposure.

CZC — The Settlement Token

CZC is CityZeen's platform token. It is not speculative — it is a fixed-value settlement instrument.

Transparent, algorithmic fee structure

CityZeen fees are calculated by the AI pricing engine, not set by a salesperson. The composite score drives the tier, the tier drives the rate.

Listing fees — provider side

Transaction fees — investor side

All buy/sell transactions on the secondary market are charged to the investor at 0.5% of transaction value. Split 60/40 between provider and investor to align incentives.

18-Criteria composite scoring

Every asset receives a composite score from 0–100 before listing. The score is computed by the CityZeen AI engine using Claude Sonnet and Cohere embeddings.

Wholesale discount tiers

CityZeen API

All API calls go to the CityZeen worker at https://worker-v18js.assets-cityzeen.workers.dev. Authentication uses your SDK key.

Authentication

Include your SDK key in every request header:

Authorization: Bearer sdk_your_key_here
Content-Type: application/json

Core endpoints

CityZeen AI Advisor API

POST /api/ai/match

{
  "investor": {
    "geographyPreference": "Europe",
    "esgMinimum": 85,
    "targetROI": "7%",
    "budget": 500000,
    "sectorFocus": "Eco Residential"
  },
  "assets": [...],
  "top_n": 3
}

Returns ranked asset recommendations with match scores, reasons, and risk factors. Powered by Claude Sonnet and Cohere Rerank.

Pricing API

POST /api/pricing/score

{
  "asset": {
    "c01_asset_type": "class_a_multifamily",
    "c13_leed": "platinum",
    "c14_esg_score": 92,
    "c03_construction_date": 2026
  },
  "emission_size": 12000000
}

Returns composite score (0–100), tier classification, listing fee, and all 18 criteria scores with weights.

POST /api/pricing/dynamic

{
  "asset": { ... },
  "emission_size": 12000000,
  "market_conditions": {
    "sentiment": "cautiously_optimistic",
    "rate_environment": "stable"
  }
}

Adds dynamic market adjustments to the base score. Factors: market sentiment (±5pts), supply/demand ratio (±3pts), ECB rate environment (±4pts), seasonality (±2pts).

Compliance architecture

CityZeen is regulated from day one. The Roundtable.eu SPV provides the full compliance wrapper while CityZeen pursues its own Luxembourg AIF MiFID II approval.

SFDR classification

All assets listed on CityZeen are assessed for SFDR eligibility as part of the onboarding process.

KYC / KYB process

All participants complete identity verification via Sumsub before accessing the platform. No anonymous participation is permitted.

Token standards

CityZeen documentation v1.0 · April 2026 · For questions: aassmus@cityzeen.co