Named experts · Practitioner profile
About Anthony
Anthony Tu-Sekine is Partner and Head of the Blockchain and Cryptocurrency Group at Seward & Kissel LLP, a New York-based law firm with a substantial digital-assets practice. Tu-Sekine advises crypto-asset issuers, exchanges, custodians, and investment funds on US securities-law issues, fund formation, regulatory engagement, and broader operational law. His practice covers the full spectrum from early-stage token-issuance analysis through institutional crypto fund formation and US enforcement-defence work.
Practice fields
Credentials
- Partner, Seward & Kissel LLP — Head of Blockchain and Cryptocurrency Group
- Substantial crypto-asset fund formation practice
- Frequent speaker at digital-asset regulatory conferences
- Published author on crypto-asset securities-law analysis
Jurisdictions
Sources
Every entry on this page is sourced from public records. The references below are the evidence base for the practitioner's expertise claims.
Relevant guides
Knowledge-base coverage that overlaps with Anthony's practice (United States · Token classification, Stablecoin issuance, Crypto M&A).
MiCA scope edges · DeFi · staking · DLT Pilot · Article 60 · reverse solicitation · MiFID II line
The Edges of MiCA Scope 2026 — DeFi, Staking, DLT Pilot, Article 60, Reverse Solicitation
Where MiCA's perimeter actually sits — the DeFi carve-out, staking and lending, the DLT Pilot Regime boundary, the Article 60 bank track, re…
MiCA · CASP operations & lifecycle
CASP Operations and Lifecycle 2026 — MiCA Passport, Banking, Wind-Down
The CASP passport under MiCA Article 65 went operational in late 2024 — but a working passport is one part of running an authorised CASP. Th…
Qualifying holdings · CASP acquisitions
Qualifying Holdings Acquisitions 2026 — MiCA CASP Guide
MiCA Articles 83 and 84 govern notification and assessment of any acquisition of a qualifying holding in a CASP, and of increases past 20%, …
Crypto custody · Segregation rules
Crypto Custody Segregation Rules — MiCA Practitioner Guide
MiCA Article 75 sets the rules for CASP custody of client crypto-assets: custody agreement, register of positions, custody policy, segregati…
CASP conduct and marketing · MiCA rules
MiCA Conduct and Marketing Rules for CASPs: The Full Cluster
How MiCA governs CASP conduct: fair, clear, not misleading information and marketing (Article 66), Title II marketing (Article 7), conflicts…
Crypto custody licence · Comparison
Crypto Custody Licence: Jurisdictions Compared (2026)
A crypto custody licence is not one licence. Under MiCA it is a CASP Class 2 authorisation; in the US a state trust charter or SPDI; in Asia…