Digital Assets Infrastructure Operator
Stefano Zingg
Stablecoin Settlement · Treasury Operations · Institutional Client Coverage
UnionBlock was built as a distributed US–LATAM stablecoin settlement network, combining client-originating corridor partners with a centralized US-side operating layer for compliance, banking, liquidity-provider routing, treasury settlement, wallet controls, and reconciliation.
- Location
- Miami · US citizen · Open to NY relocation
- Target Roles
- Payments Ops · Trading Ops · Stablecoin Partnerships · Treasury Ops · Compliance Ops · Institutional Coverage
- Principal volume
- $302M+
- Transactions
- 2,762
- Counterparties
- 250+
- Liquidity & rail relationships
- 13
- CIP applications reviewed
- 543
- Client-fund losses
- 0
Documented · Reconciled · Reference-backed
Institutional stablecoin settlement at production scale.
UnionBlock specialized in USDT-to-USD settlement and redemption workflows across high-friction cross-border corridors. The operating model connected local client-originating corridor partners with UnionBlock's centralized US-side infrastructure for compliance review, liquidity routing, banking settlement, wallet controls, and reconciliation.
Principal volume
$302M+
Documented principal volume across 2023–2026.
Transactions
2,762
Documented transactions, with preserved reconciliation records.
Counterparties
250+
Corporate, fintech, institutional, and HNW counterparties across US–LATAM and EU corridors.
Settlement discipline
Zero
Documented client-fund losses across the operating record.
Verification
The operating record is supported by reconciled transaction books, banking records, public block-explorer data, FinCEN registration records, counsel engagement records, and reference contacts available upon mutual interest.
Union Block LLC · Founder & CEO · 2017–2026
Nine years operating a regulated digital-assets infrastructure business.
Founded UnionBlock's operating entity in 2017 and later structured the business as a Delaware LLC with federal MSB registration. Built the company around institutional stablecoin settlement, OTC execution, treasury operations, and cross-border payment workflows.
Dige Zingg LLC founded in Cambridge, Massachusetts
Early digital-asset operations and investment activity.
Restructured as Union Block LLC in Delaware
Institutional positioning and operating infrastructure expanded.
Cross-border payment workflows built out
US–LATAM corridor operations and BSA/AML program foundation.
FinCEN MSB principal registration obtained
Formalized compliance function and operating controls.
Peak operating year
959 transactions and $112.3M in documented volume.
Sustained scale
975 transactions, $92.2M in documented volume, expanded institutional liquidity-provider relationships.
Orderly wind-down
Driven by banking de-risking and margin compression. No documented client-fund losses, no enforcement actions, and all counterparty obligations honored.
Federal MSB registration. BSA/AML controls. No enforcement actions.
UnionBlock operated under a federal MSB compliance framework, supported by external legal counsel and on-chain monitoring infrastructure.
FinCEN MSB Registration
Principal-operator registration #31000288665858, initially registered in November 2022 and renewed in January 2026.
Compliance Intake Discipline
Reviewed 543 CIP applications and onboarded 293 counterparties, with approximately 250 applications not converted due to rejected files, incomplete onboarding, documentation gaps, risk review, inactivity, or commercial non-fit.
BSA/AML/OFAC Program
KYC/KYB, UBO verification, EDD, OFAC screening, adverse media review, transaction monitoring, recordkeeping, and escalation workflows.
On-chain Monitoring
Elliptic KYT supported wallet pre-screening, transaction monitoring, and counterparty-risk workflows.
External Counsel
Legal and regulatory support from Perkins Coie LLP and Nelson Mullins.
Compliance Function
Designated compliance leadership and analyst support for onboarding, transaction review, and monitoring.
Regulatory Record
No regulatory enforcement actions.
Institutional liquidity, banking, and compliance relationships.
UnionBlock coordinated across stablecoin issuers, institutional OTC desks, market makers, exchanges, fintech rails, compliance vendors, external counsel, and banking partners.
Liquidity providers & institutional rails
13 counterparties
Banking partners
3 counterparties
Compliance & legal infrastructure
4 counterparties
Evidence-backed operating record.
The operating record can be verified through multiple independent evidence layers. A diligence-grade documentation package is available upon mutual interest.
FinCEN MSB registry confirmation
Public block-explorer wallet activity
Reconciled transaction records
Banking and settlement records
Counsel engagement records
Liquidity-provider and banking references
Corridor-partner and client references
Curriculum vitae.
Nine years of institutional digital-assets operating experience. Available in two formats tailored to US and European markets.
US Resume
Digital Assets Infrastructure
One-page institutional format optimized for US payments, trading, treasury, and compliance roles.
- ·Miami–Fort Lauderdale Area
- ·US Citizen · Open to NY relocation
- ·FinCEN MSB Principal Operator
Professional Summary
Institutional digital-assets operator with nine years of experience building and operating stablecoin settlement infrastructure, OTC execution workflows, treasury operations, liquidity-provider coordination, and compliance-sensitive transaction systems across US–LATAM and EU corridors.
Founded UnionBlock's operating entity in 2017, obtained FinCEN MSB principal registration in 2022, and built a verifiable book of $302M+ in documented principal volume across 2,762 transactions, serving 250+ corporate, fintech, institutional, and HNW clients.
Education
Universidad Metropolitana
BSc Business Economics · Caracas, Venezuela · Feb 2019
Languages
- English
- C2 · Fluent
- Spanish
- C2 · Native
- Italian
- B1 · Intermediate
Work Authorization
US citizen with full US work authorization. Open to New York relocation.
Open to institutional roles.
Currently focused on institutional digital-asset infrastructure roles across payments operations, trading operations, stablecoin partnerships, treasury operations, compliance operations, and institutional client coverage.
Location
Miami, FL
US citizen · Open to New York relocation