As the digital asset market matures and regulatory environments tighten, institutions are placing unprecedented demands on the security and compliance of digital asset custody. Global Digital Custody Limited (GDC), acting as the exclusive agent for licensed trust company in Hong Kong ( HKTCM)’s digital asset custody services , provides custody accounts that meet the highest standards of trust accounts. We employ MPC (Secure Multi-Party Computation) technology to further enhance the security protections of these trust accounts, delivering compliant and trustworthy asset custody services to institutional clients.

Under the fundamental legal principles governing trust accounts, licensed trust institutions must fulfil stringent fiduciary duties as trustees of assets. Consequently, the responsibility for safeguarding and managing private keys rests with the licensed institution, ensuring these keys are never directly exposed to end users. This approach guarantees professional risk management of assets alongside the highest level of legal protection, perfectly aligning with the rigorous requirements of institutional and high-net-worth clients for compliance, security, and operational efficiency.

What is MPC technology?

Secure Multi-Party Computation (MPC) is a complex cryptographic technique enabling multiple parties to input data and jointly compute a function while preserving each party’s data privacy. It is precisely MPC technology that enables secure collaborative computation while guaranteeing the confidentiality of each party’s data.

Key Characteristics of MPC Technology

– Privacy Protection: MPC allows data processing without disclosing sensitive information to other participants in the computation.

– Distributed Trust: Through multi-party distributed computation, MPC eliminates reliance on a single trusted party, thereby enhancing trust through decentralisation.

– Enhanced Security: MPC ensures no single entity can access the complete dataset, thereby protecting data and reducing the risk of data breaches.

– Scalability and Efficiency: MPC is inherently scalable and operates efficiently, making it suitable for complex computations involving large datasets.

– Flexibility: MPC can adapt to different types of computations and protocols, offering versatility in its applications.

Applications of MPC Technology in Blockchain

Within the blockchain sector, MPC technology plays a pivotal role in bolstering security and privacy. It is particularly integral to scenarios such as secure multi-party transactions, privacy-preserving smart contract execution, and decentralised finance (DeFi) applications. By integrating MPC technology with blockchain contexts, we can establish more secure and privacy-preserving environments for digital asset transactions, smart contract execution, and asset management. This approach aligns seamlessly with blockchain’s foundational principles of decentralisation and security.

MPC: Secure Multi-Party Computation and Multi-Party Signatures

How MPC Wallets Function

As a significant innovation in digital asset management, MPC wallets employ secure multi-party computation (MPC) technology to provide a secure and private environment for cryptocurrency transactions and storage.

Enterprise-Grade Security

A defining feature of MPC wallets is their innovative private key management approach. Unlike traditional single-key systems, MPC wallets generate multiple private key fragments. When these fragments collectively participate in MPC computations, they achieve the same effect as using a single private key.
When signing transactions, the MPC wallet bypasses the need to merge multiple private key fragments into a single key for signing. Instead, it directly utilises the multiple fragments for signing. This approach effectively eliminates the single point of vulnerability associated with private keys. Through distributed multi-party transaction signing, the MPC wallet not only significantly enhances security but also guarantees the integrity of every transaction.

Distributed Multi-Party Management

MPC wallets are suitable not only for individual use but also for scenarios requiring multi-party collaborative management, such as corporate finance departments or investment institutions. The distributed nature of MPC supports team collaboration for asset control and oversight, ensuring no single entity can independently control assets. Institutions can tailor co-management solutions according to their governance models, including consensus requirements for transaction execution and role-based permissions within the wallet. The flexibility of MPC wallets means they can meet the needs of diverse users, from individual investors to large institutions.

Seamless Ecosystem Integration

MPC wallets rapidly adapt to support mainstream and emerging blockchain networks, achieving seamless integration with numerous major blockchains (including Ethereum, Bitcoin, NEAR, Solana, Aptos, Sui, Tron, Avalanche, and Fantom). This ensures secure, fluid access to diverse ecosystems, encompassing DeFi platforms, NFT marketplaces, and exchanges. Owing to its versatility, MPC wallets are increasingly favoured by users seeking to explore multiple ecosystems without compromising security or user experience. Furthermore, their capability for rapid onboarding of new chains positions MPC wallets as forward-thinking tools within the evolving Web3 landscape.

Serving Diverse User Segments

MPC wallets’ enterprise-grade security, high privacy, and flexible asset management cater to a broad spectrum of users: privacy-conscious individuals, security-focused organisations, and those prioritising decentralised collaborative asset management. Whether for daily transactions, corporate financial activities, or high-security operations, MPC wallets deliver robust solutions within the evolving crypto landscape.

Custodial and Non-Custodial MPC Wallets

Custodial MPC Wallets

A custodial MPC wallet is a digital wallet where the private keys are managed by a third-party service provider. The service provider assumes responsibility for safeguarding the private keys and managing transactions on behalf of the wallet owner.

Advantages

– Ease of use: Suitable for beginners or users who prefer not to manage their wallet personally.
– Recovery functionality: Account recovery is possible if access is lost (not all self-custody wallets offer this mechanism).
– Enhanced security services: Custodians typically provide additional security services, such as regular security audits and fraud monitoring mechanisms.

Disadvantages

– Reduced control: As private keys are held and managed by others, users have less control over their funds.
– Reduced privacy: Service providers typically have access to transaction data, potentially compromising user privacy.
– Counterparty risk: Exposure to third-party vulnerabilities from attacks or mismanagement (though MPC architectures mitigate such risks).
Hosted MPC wallets suit users with limited technical knowledge, newcomers to crypto, those preferring third-party asset custody, or individuals placing high trust in wallet providers.

Non-custodial MPC wallets

Non-custodial MPC wallets, also termed self-custodial MPC wallets, are digital wallets where users retain full control over their private keys, meaning they always maintain custody of their funds. These wallets deliver enhanced security through MPC technology while granting users complete autonomy over their digital assets.

Advantages

– Complete Asset Control: Users maintain 100% control over their funds, offering enhanced security and autonomy.
– Enhanced Privacy: Provides greater privacy, as third parties cannot access users’ funds or transaction details.
– No Counterparty Risk: Eliminates the risk of relying on third parties to safeguard assets.

Disadvantages

– Responsibility for Asset Protection: Users bear full responsibility for safeguarding their private keys, which may be a significant burden for some.
– No Recovery Functionality: Assets are typically unrecoverable if the recovery phrase is lost.
– Complex Usage: Requires a more comprehensive understanding of blockchain and security practices, making self-custody wallets generally more challenging to use.
Non-custodial MPC wallets are well-suited for experienced crypto users, those prioritising 100% autonomous control over their assets, and individuals willing to assume responsibility for their asset security or who value privacy.

MPC Wallets vs Traditional Solutions

Traditional solutions for digital asset management typically refer to conventional digital wallets relying on standard cryptographic methods for security, encompassing both hardware and software wallets. These traditional wallets generally operate using a single key, authorising transactions through a single private key. Whilst they have long been the mainstream tools for digital asset management, increasingly complex security requirements and technological advancements have paved the way for more advanced solutions such as MPC wallets.

Security

MPC Wallets: Achieve heightened security through distributed key management. Private keys are fragmented and participate in transaction signing in a distributed manner, significantly reducing the risk of private key exposure.
Traditional Wallets: Typically rely on a single private key. Should this key be compromised, it may result in the loss of all assets within the wallet. While inherently secure, traditional wallets remain vulnerable to single-point-of-failure security threats.

Privacy

MPC Wallets: Participants can only view partial transaction details, offering superior privacy and effectively meeting the growing demand for privacy protection in crypto transactions.
Traditional Wallets: Transactions are more transparent, particularly when wallet addresses are linked to user identities, making users more susceptible to privacy breaches.

Usability

MPC Wallets: While providing advanced security and privacy, they require users to have a basic understanding of distributed systems, increasing the learning curve.
Traditional Wallets: Typically more straightforward and user-friendly, catering to beginners or those prioritising simplicity in crypto transactions.

MPC wallets suit users prioritising security and privacy, including corporations, tech enthusiasts, and individuals valuing confidentiality in crypto transactions. Conversely, traditional wallets best serve everyday users seeking direct, reliable digital asset management without primary focus on advanced security features.

GDC MPC Wallet: The Benchmark for Security and Compliance

The GDC MPC Wallet is an institutional-grade trust account solution designed for professional investors and organisations. Leveraging advanced MPC technology within a trust custody framework, it provides institutional clients with a secure, compliant, and efficient digital asset environment.

Leading Multi-Layer Security Model

GDC employs secure multi-party computation (MPC) for decentralised private key sharding management, ensuring the entire private key remains permanently concealed. Furthermore, GDC integrates hardware-based trusted execution environment technology, establishing a dual-defence mechanism that enhances the wallet’s resilience against diverse security threats.

Advanced Policy Engine for Compliance Governance

Based on clients’ varied governance models, GDC executes customised member permissions and transaction policies in accordance with trust agreements. The policy engine automates governance workflows, creating a secure and efficient operational environment for clients while meeting stringent compliance and regulatory standards.

Exceptional Ecosystem Accessibility and Integration

The GDC MPC wallet supports seamless access and broad compatibility with mainstream blockchain networks and diverse signature algorithms. This ensures effortless operation within an expanding, multifaceted blockchain ecosystem, even under a trust architecture.

Future Outlook: GDC Driving Institutionalisation of Digital Assets

Looking ahead, as digital assets gain broader acceptance as an emerging asset class, secure and compliant custody will form the bedrock for professional investors’ large-scale participation.
The GDC MPC Wallet is positioned to address this critical need:
– Institutional Bridge: GDC combines the ultimate security of MPC technology with the legal safeguards and fiduciary responsibilities of trust companies, building a secure, compliant bridge for traditional financial institutions, large enterprises, funds, family offices, and high-net-worth clients to enter the digital asset sphere.
– Regulatory Compatibility: Leveraging trust account architecture, GDC continuously adapts to meet evolving global digital asset regulatory requirements, ensuring client assets operate within compliant frameworks at all times.
– Ecosystem Hub: Through seamless multi-chain integration and an advanced governance strategy engine, the GDC MPC wallet will serve as the central hub for professional investors to efficiently and securely transfer and manage value within the Web3 ecosystem.
GDC is committed to becoming the security standard-setter and infrastructure provider in the digital asset sphere, empowering trusts through technology to lay a robust foundation for the digital economy’s prosperity.