Digital Securities Trust & Custody Infrastructure

Alterna Trust is Japan's first trust company specialized in digital securities, providing institutional-grade custody infrastructure for blockchain-based security tokens and digital asset management. Jointly established by Mitsui & Co. Digital Asset Management (MDM) and Sumitomo Mitsui Trust Bank, the company delivers regulated trust and custodial services specifically designed for tokenized real-world assets.

Trust & Custody Services

Institutional Trust Infrastructure: As a licensed trust company, Alterna Trust acts as the legal trustee holding tokenized assets on behalf of investors, ensuring proper custody and fiduciary duty compliance. The trust structure enables efficient capital raising while providing investor protections through regulated trustee oversight.

Digital Securities Administration: Manages operational aspects of security tokens including token issuance coordination, dividend calculation and distribution, investor communications, and regulatory compliance reporting to Japanese Financial Services Agency.

Blockchain-Integrated Custody: Operates trust infrastructure that interfaces with distributed ledger technology, enabling on-chain asset representation, smart contract-based dividend automation, transparent transaction records for audit, and integration with traditional banking and securities systems.

Platform Integration

The custody infrastructure powers the Alterna digital securities investment platform, which enables retail investors to access tokenized real-world assets including real estate, infrastructure, aircraft, and ships through security tokens. The platform uses blockchain technology to fractionally tokenize ownership of physical assets, converting them into tradeable digital securities that comply with Japanese financial regulations.

Regulatory Framework & Security

Operates under Japanese trust business regulations with full compliance for:

• Financial Services Agency oversight
• Trust business licensing requirements
• Securities regulations for digital assets
• Anti-money laundering (AML) and counter-terrorism financing (CTF) controls
• Cybersecurity standards for digital asset custody
• Security token standards for regulatory compliance
• Smart contracts for automated operations
• Immutable transaction records on distributed ledger

Strategic Value

Alterna Trust addresses a critical infrastructure gap in Japan's digital securities ecosystem, as traditional trust banks have been hesitant to support security token operations. By combining traditional trust services with blockchain technology expertise, Alterna Trust facilitates the bridge between conventional finance and Web3-based capital markets. The infrastructure serves both retail investors and corporations/asset owners seeking efficient capital raising through tokenization, supporting Mitsui & Co.'s committed ¥19 billion ($170 million) tokenization pipeline with plans to reach ¥100 billion ($910 million) within three years.