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A financial OS,
re-built from the
silicon up.

CityZeen is not a traditional fintech with blockchain features. It is a regulated financial operating system designed natively for tokenised securities, AI-grade asset scoring, and 24/7 cross-border settlement. Every layer of the stack is institution-ready.

The CityZeen Stack · Seven Integrated Layers
Layer 07 Client experience Next.js · Vercel Edge · Clerk Auth
Layer 06 AI reasoning core Anthropic Claude · Cohere · multi-LLM routing
Layer 05 Pricing & scoring engine 18-criterion model · Monte Carlo · SFDR classifier
Layer 04 Geospatial intelligence Sentinel-2 · Planet Labs · Maxar · Kadaster · AEC
Layer 03 Regulated compliance Sumsub KYC/KYB · eIDAS · ERC-3643 T-REX
Layer 02 Payment & custody rails Powens PSD2 · Circle USDC · Swissquote
Layer 01 Tokenisation & settlement Polygon PoS · ERC-3643 · Alchemy Portfolio API
The Best In Each Layer

Partners chosen
for regulator fit.

We picked each partner because they already carry the license, the audit and the institutional relationships CityZeen needs in the jurisdictions we operate. This is how a regulated platform compounds — through integrations, not replacements.

Blockchain · Layer 01

Polygon

L2 Chain · ERC-3643 / T-REX

Proof-of-Stake EVM chain with institutional-grade throughput and near-zero finality cost. ERC-3643 token standard carries on-chain compliance — every transfer is validated against whitelist before execution.

T+0 on-chain settlement
AI · Layer 06

Anthropic · Cohere

Multi-model LLM routing

Frontier models read and classify data rooms, score ESG, generate SFDR narrative, match assets to mandates. Every model call is audit-logged with prompt, response and reasoning chain.

Full explainability
KYC · Layer 03

Sumsub

KYC · KYB · AML

Regulated identity verification across 220+ jurisdictions. MiFID II professional status confirmation in under 5 minutes. AML transaction monitoring with PEP and sanctions screening.

eIDAS + MiFID II ready
Banking · Layer 02

Powens

Open banking · PSD2

Direct account-to-account settlement across 300+ European banks under the PSD2 framework. SEPA Instant for near-real-time Euro settlement. Account verification before first transaction.

300+ banks · PSD2
Stablecoin · Layer 02

Circle

USDC · EURC · MiCA e-money

Regulated stablecoin rail for cross-border settlement in under two minutes. MiCA-classified e-money token. Mint and burn through Circle APIs with full reserve attestation monthly.

MiCA compliant
Custody · Layer 02

Swissquote

Bank-grade custody

Swiss-licensed bank custody for fiat and digital asset holdings. Segregated client accounts under FINMA oversight. Institutional-grade insurance and 24/7 reconciliation.

FINMA licensed
The Scoring Engine

Every asset priced
by the same engine.

CityZeen's 18-criterion pricing engine is the heart of the platform. It ingests the full data room, scores each dimension, runs a thousand-iteration Monte Carlo valuation, classifies the asset under SFDR, and emits a fee tier — all in under ninety seconds.

  • InputRent roll, appraisal, leases, environmental reports, cadastral data, satellite imagery
  • Model18-criterion composite · weighted by asset class and jurisdiction
  • SimMonte Carlo · 1,000+ iterations · 5-year cashflow bands
  • OutputESG score · SFDR classification · Fee tier · Indicative valuation · Audit log
1

Data Room Intake

PDF, Excel, images uploaded by issuer

2

LLM Extraction

Claude reads every document and structures the fields

3

Satellite Verification

Physical asset confirmed from Sentinel-2 + Planet Labs

4

18-Criterion Scoring

Each criterion scored against peer comparables

5

Monte Carlo

1,000-iteration cashflow simulation · confidence band

6

SFDR + Fee Tier

Art. 8 or 9 classified · Premium / Standard / Basic / Elevated

Security by Design

Built for the audit
before the build.

From day one CityZeen has been designed for a CSSF, AMF and SEC-equivalent audit. Every action is logged, every key is segregated, every transfer is compliance-checked before it touches the chain.

Security 01

On-chain compliance

ERC-3643 enforces whitelist, jurisdiction and investor-type checks inside the token contract. No transfer executes if a single compliance rule is breached.

Security 02

Key segregation

Client asset keys held by Swissquote under FINMA custody. Platform operational keys held by AWS KMS + Cloudflare in multi-region HSM.

Security 03

Audit trail

Every platform action recorded to an append-only log. Every LLM decision stored with full prompt, response and supporting evidence for regulator inspection.

Security 04

Penetration testing

Independent quarterly pentest. OWASP top-10 coverage baseline. Responsible disclosure programme open to external security researchers.

Go deep on
the architecture.

Request our technical due diligence package — includes architecture diagrams, smart contract audit report, partner SLAs, security posture, and infrastructure governance documentation.

Request Technical Pack
For prospective institutional partners · NDA required · 72 hours