Secure Digital Asset Custody Solutions: Built for Trust, Scaled for Growth
For Financial Institutions, Asset Managers, and Enterprises entering the digital asset ecosystem.
We build the compliant, institutional-grade infrastructure you need to secure and manage crypto assets with absolute confidence.
The High-Stakes World of Digital Asset Custody
The opportunity in digital assets is unprecedented, but so are the risks. A single security flaw or compliance misstep can lead to catastrophic losses and irreparable reputational damage. Off-the-shelf solutions lack control, and third-party custodians introduce counterparty risk. To truly capitalize on the digital asset revolution, you need a custody solution that is purpose-built for your specific security, compliance, and operational needs.
Unbreachable Security Architecture
We build solutions using a defense-in-depth strategy, combining Multi-Party Computation (MPC), Hardware Security Modules (HSMs), and air-gapped cold storage to eliminate single points of failure and protect assets from both external and internal threats.
Regulatory Compliance by Design
Navigate the complex regulatory landscape with confidence. Our platforms are built with KYC/AML, Travel Rule adherence (e.g., TRISA), and automated reporting capabilities to meet the strictest compliance standards in your jurisdiction.
Seamless System Integration
Our custody solutions are not silos. We design flexible, API-first platforms that integrate smoothly with your existing core banking systems, portfolio management software, and internal compliance tools for a unified operational workflow.
Full Asset & Policy Control
Eliminate counterparty risk and gain absolute control. Define and enforce granular, multi-user transaction policies, set withdrawal limits, and whitelist addresses, ensuring every action aligns with your internal governance framework.
Future-Proof & Scalable
The digital asset space evolves rapidly. Our modular architecture allows you to start with a core custody solution and seamlessly add support for new assets, DeFi protocols, and staking services as your business grows and the market matures.
Turnkey Expertise & Support
Leverage our deep expertise in blockchain, cryptography, and cybersecurity. We act as your dedicated digital asset technology partner, providing end-to-end development, deployment, and 24/7/365 support and incident response.
From Cost Center to Profit Center
Transform custody from a necessary expense into a new revenue stream. By offering secure custody-as-a-service to your clients, you can generate fees and deepen customer relationships in the high-growth digital asset market.
Institutional-Grade Trust
Our solutions are built to meet the exacting standards of regulated financial institutions. We are SOC 2 compliant and our processes are CMMI Level 5 certified, providing the verifiable trust your stakeholders and clients demand.
End-to-End Lifecycle Management
We go beyond just storage. Our solutions cover the entire asset lifecycle, from secure minting and issuance for tokenization projects to custody, transfer, and eventual burning, all under one secure, unified platform.
Our Comprehensive Crypto Custody Solutions
We offer a complete suite of services to design, build, and deploy a custody solution tailored to your exact requirements. From foundational security to advanced DeFi capabilities, we provide the building blocks for your digital asset strategy.
Multi-Party Computation (MPC) Wallet Development
Eliminate the risk of single-key compromise by distributing transaction signing among multiple parties. Our MPC wallets provide the highest level of security for online ("hot") assets.
- No single point of failure for private keys.
- Enables complex, multi-user approval workflows.
- Supports a wide range of cryptocurrencies and tokens.
Institutional Cold Storage Solutions
Secure the bulk of your assets in fully air-gapped, geographically distributed cold storage. We design and implement robust processes for secure key generation, storage, and retrieval.
- Protection from all online attack vectors.
- Integration with Hardware Security Modules (HSMs).
- Auditable, dual-control processes for all operations.
Hardware Security Module (HSM) Integration
Leverage FIPS 140-2 Level 3+ certified hardware to protect your most critical cryptographic keys. We integrate and manage HSMs for both cold storage and warm wallet environments.
- Tamper-resistant hardware for key storage.
- Enforces strict access control policies at the hardware level.
- Accelerates cryptographic operations securely.
Digital Asset Security Audits
Before launching, ensure your entire custody infrastructure is impenetrable. Our expert security team conducts comprehensive audits, from smart contracts to network architecture.
- Penetration testing and vulnerability assessments.
- Code review of all critical components.
- Architectural review against industry best practices.
24/7/365 Incident Response & Support
Your digital assets are never off the clock, and neither are we. Our dedicated security operations team provides around-the-clock monitoring and rapid incident response.
- Proactive threat intelligence and monitoring.
- Pre-defined playbooks for rapid incident containment.
- Direct access to cybersecurity experts when you need it most.
Qualified Custodian (QC) Platform Development
For RIAs and other regulated entities, we build custody platforms that meet the specific technological and operational requirements for becoming a Qualified Custodian under SEC guidelines.
- Segregated accounts for each client.
- Robust auditing and reporting features.
- Designed to satisfy regulatory scrutiny.
KYC/AML & Travel Rule Integration
Build compliance into the core of your platform. We integrate leading solutions for Know Your Customer (KYC), Anti-Money Laundering (AML) transaction monitoring, and Travel Rule compliance (e.g., TRISA).
- Automated identity verification and risk scoring.
- Real-time transaction monitoring for suspicious activity.
- Secure information sharing with other VASPs.
Policy & Governance Automation
Translate your internal risk policies into automated, unbreakable rules within the custody platform. Our policy engine allows for granular control over every transaction.
- Enforce multi-user approvals for large transactions.
- Whitelist approved addresses and smart contracts.
- Set velocity limits and time-locks on withdrawals.
Crypto-Asset Reporting & Accounting
Simplify tax and financial reporting. We integrate tools that provide accurate cost basis tracking, P&L reporting, and data exports compatible with standard accounting software.
- Generate comprehensive reports for audit and compliance.
- Integrate with tax calculation and reporting services.
- Provide clients with clear, concise statements.
Insurance & Risk Management Integration
Add another layer of protection and trust. We facilitate the integration of your custody solution with leading crypto-asset insurance providers to protect against theft and loss.
- Architect solutions to meet insurers' underwriting criteria.
- Integrate reporting required for policy maintenance.
- Combine technology and insurance for comprehensive protection.
DeFi & Staking Custody Solutions
Participate in the DeFi ecosystem without compromising security. We build solutions that allow you to securely stake assets, provide liquidity, and interact with DeFi protocols from within your custody environment.
- Secure smart contract interaction via policy-controlled wallets.
- Automated reward tracking and reporting.
- Support for leading PoS networks and DeFi protocols.
NFT & Digital Collectible Custody
Secure high-value NFTs and other unique digital assets. Our solutions provide secure storage and display for ERC-721, ERC-1155, and other non-fungible token standards.
- Rich metadata display and management.
- Secure interaction with NFT marketplaces.
- Cold storage solutions for ultra-high-value collectibles.
Tokenization Platform Custody
For businesses issuing tokenized securities, real estate, or other real-world assets, we provide the underlying custody infrastructure to securely manage these assets throughout their lifecycle.
- Support for security token standards (e.g., ERC-1400).
- Integrated cap table management and investor whitelisting.
- Automated dividend and distribution capabilities.
Cross-Chain Custody Solutions
Manage assets across multiple blockchain ecosystems from a single, unified platform. We build solutions with cross-chain interoperability to support a diverse asset strategy.
- Integration with bridging and interoperability protocols.
- Unified view of all assets across different chains.
- Consistent security policies applied to all networks.
Sub-Custody & Whitelabel Solutions
Launch your own custody-as-a-service business. We provide a fully white-labeled platform that you can offer to your own clients, complete with segregated accounts and customizable fee structures.
- Create a new, high-margin revenue stream.
- Full branding and customization capabilities.
- Scalable infrastructure to support multiple clients.
Our Institutional Custody Development Process
We follow a rigorous, security-first methodology to ensure your custody platform is robust, compliant, and perfectly aligned with your business objectives from day one.
Discovery & Threat Modeling
We begin by deeply understanding your business goals, regulatory requirements, and operational workflows. We conduct a thorough threat modeling exercise to identify potential risks and design countermeasures.
Architect & Design
Our architects design a bespoke custody solution, selecting the optimal mix of technologies (MPC, HSM, Cold Storage) and defining the security policy framework. Every design choice is documented and reviewed for compliance.
Secure Development & Testing
Our expert developers build the platform following secure coding practices. The system undergoes continuous, rigorous testing, including multiple rounds of internal and third-party penetration testing and security audits.
Deploy, Monitor & Support
We manage the deployment into a secure production environment. Post-launch, we provide 24/7 monitoring, ongoing maintenance, and expert support to ensure the platform operates flawlessly and remains secure against emerging threats.
Success Stories in Digital Asset Custody
We partner with forward-thinking financial institutions to build the secure foundations for their digital asset strategies. See how we've helped our clients launch and scale with confidence.
The Challenge: Entering a New Asset Class Securely
The bank faced a critical challenge: their HNWIs were moving significant capital to external crypto platforms. They needed to offer a competitive, in-house crypto custody service but lacked the specialized technology and regulatory expertise. They couldn't risk their century-old reputation on a flawed solution.
Key Challenges:
- Ensuring absolute, unbreachable security for client assets.
- Navigating unclear banking regulations around crypto custody.
- Integrating a new digital asset system with their existing core banking infrastructure.
- Training staff and building trust with clients in a new, volatile asset class.
Our Solution: A White-Labeled, Bank-Grade Custody Platform
We partnered with the bank to design and build a fully compliant, white-labeled custody platform that felt like a natural extension of their existing services.
Key Implementations:
- Developed a hybrid custody model using MPC for transactional wallets and air-gapped HSMs for deep cold storage.
- Built a comprehensive compliance module with automated KYC/AML checks and reporting for banking regulators.
- Created a suite of APIs to seamlessly integrate with their core banking system for unified client views and reporting.
- Provided extensive training materials and co-hosted educational webinars for the bank's clients and relationship managers.
The Challenge: The Security vs. Speed Dilemma in DeFi
The fund's existing third-party custody solution was too slow and restrictive for their DeFi strategies. The manual approval processes meant they were missing out on time-sensitive opportunities. They needed a solution that offered institutional-grade security with the speed and flexibility required for DeFi.
Key Challenges:
- Executing multi-stage DeFi transactions that required multiple signatures quickly.
- Securely interacting with unaudited or new smart contracts.
- Enforcing internal risk policies in a fast-moving, automated trading environment.
- Protecting assets from smart contract exploits and protocol risks.
Our Solution: An Automated, Policy-Driven DeFi Access Hub
We developed a custom custody solution that acted as a secure gateway to the DeFi ecosystem, combining speed with robust, automated policy enforcement.
Key Implementations:
- Built on an MPC architecture that allowed for automated, pre-approved transaction signing based on a sophisticated policy engine.
- Integrated with smart contract analysis tools to provide real-time risk scoring before any interaction.
- Created a "DeFi Whitelist" where only pre-vetted protocols and smart contracts could be accessed, managed by the fund's risk committee.
- Developed a real-time dashboard to monitor all DeFi positions, track P&L, and calculate impermanent loss across multiple protocols.
The Challenge: Building Investor Trust in a New Model
The platform's success depended entirely on convincing investors that their digital ownership stakes were as secure as a physical deed. They needed a custody solution specifically designed for security tokens, capable of managing complex compliance rules and investor rights.
Key Challenges:
- Securely minting and distributing security tokens to verified investors.
- Managing a complex cap table and enforcing transfer restrictions on-chain.
- Automating the distribution of rental income (dividends) to token holders.
- Providing investors with a simple, secure interface to view and manage their holdings.
Our Solution: An Integrated Tokenization & Custody Ecosystem
We created a holistic solution that managed the entire lifecycle of the tokenized assets, from issuance to custody and corporate actions.
Key Implementations:
- Developed a security token issuance platform with integrated KYC/accreditation checks.
- Built a custom custody solution based on the ERC-1400 standard, with on-chain enforcement of transfer restrictions and investor whitelists.
- Created a smart contract system for automated, pro-rata distribution of monthly rental income to all token holders.
- Designed a secure, user-friendly investor portal where individuals could log in to see their property portfolio, transaction history, and income statements.
Technology & Security Stack
We build on a foundation of proven, enterprise-grade technologies and adhere to the highest international security standards to safeguard your digital assets.
Industries We Empower
Our custody solutions are tailored to the unique security and compliance needs of various sectors entering the digital asset economy.
Banking & Credit Unions
Offer secure crypto custody to retail and institutional clients, preventing asset outflow and creating new revenue streams.
Asset Managers & Hedge Funds
Securely manage diverse crypto portfolios, execute complex trading strategies, and participate in DeFi with institutional-grade controls.
Family Offices & HNWIs
Protect generational wealth with bespoke, highly secure custody solutions for significant digital asset holdings.
Crypto Exchanges & Brokers
Build a trusted platform with a secure, scalable custody infrastructure that protects user funds and meets regulatory requirements.
Corporate Treasuries
Safeguard corporate balance sheet assets like Bitcoin and other cryptocurrencies with robust internal controls and reporting.
FinTech & Web3 Startups
Launch innovative products on a secure foundation, offering embedded custody and wallet services to your users.
Trusted by Leaders in Finance and Technology
"As a CISO at a major bank, my primary concern is risk. Errna's team understood our security posture and regulatory constraints perfectly. The MPC solution they built for us is the most secure system in our entire tech stack."
"We needed to offer our clients access to DeFi without exposing the fund to undue risk. Errna's policy-driven custody platform was the answer. It's the perfect blend of flexibility for our traders and control for our risk managers."
"Launching a regulated tokenization platform required a custody partner who was obsessive about compliance. Errna's expertise in KYC/AML and securities law was evident from day one. They are more than developers; they are strategic partners."
"The integration process was surprisingly smooth. The Errna team worked hand-in-glove with our core banking software provider to ensure a seamless transition. Our clients now have a unified view of all their assets, traditional and digital."
"The security audit they performed was relentless. They found vulnerabilities we never would have considered. Building our custody solution with them afterwards gave us complete peace of mind before going to market."
"As a family office, protecting our principal is paramount. Errna designed a bespoke cold storage solution that gives us ultimate security and control over our digital asset inheritance. Their service is white-glove and their technology is ironclad."
Meet Our Digital Asset Security & Custody Experts
Our team is comprised of seasoned experts in cryptography, cybersecurity, blockchain architecture, and regulatory compliance. We are the trusted partner you need to navigate the complexities of digital asset custody.
Joseph A.
Expert Cybersecurity & Software Engineering, CISSP. Specializes in threat modeling and secure architecture for financial institutions.
Akeel Q.
Manager, Certified Cloud Solutions Expert & AI Specialist. Focuses on scalable and secure cloud deployment for custody solutions.
Vikas J.
Divisional Manager, Certified Expert Ethical Hacker. Leads our penetration testing and incident response teams.
Dr. Bjorn H.
V.P. - Ph.D., FinTech, DeFi. Provides strategic guidance on DeFi integration and crypto-economic security.
Flexible Engagement Models
We tailor our engagement to fit your specific needs, whether you require a full end-to-end build, strategic guidance, or a dedicated team to augment your own.
Dedicated Team
A handpicked team of our custody experts works as a seamless extension of your in-house team, providing dedicated focus and deep integration for long-term projects.
Project-Based
Ideal for well-defined projects like a security audit or the development of a specific feature. We deliver a turnkey solution on a fixed timeline and budget.
Consulting & Advisory
Leverage our strategic expertise for threat modeling, regulatory analysis, technology selection, or architectural design before you commit to a full build.
Frequently Asked Questions
Hardware wallets are great for individuals, but they represent a single point of failure for institutions. If the device is lost, stolen, or compromised, or if the person holding it is unavailable or malicious, assets can be lost. Our institutional solutions use Multi-Party Computation (MPC) and multi-user approvals, meaning no single person or device can ever move funds alone. This eliminates single points of failure and protects against both external theft and internal fraud.
MPC is a cryptographic technology where a private key is split into multiple "shards," which are stored separately and never combined, not even during transaction signing. To approve a transaction, a required threshold of parties (e.g., 3 out of 5) must use their key shard in a distributed computation. This is revolutionary because the full private key never exists in one place, making it virtually impossible to steal. It's the gold standard for securing online or "hot" wallets.
We build our platforms with regulatory adaptability in mind. We use modular, API-first designs, allowing us to quickly integrate new compliance tools as regulations evolve. For example, we integrate with leading Travel Rule solution providers and AML transaction monitoring services. We also partner with legal and compliance experts to stay ahead of the curve, ensuring your platform can be updated to meet new requirements as they emerge.
Absolutely. Our solutions are blockchain-agnostic. We can build support for any Layer-1 or Layer-2 network, from Solana and Avalanche to custom enterprise blockchains. We also support a wide range of token standards, including fungible tokens (ERC-20), NFTs (ERC-721), and security tokens (ERC-1400), ensuring you can manage a diverse portfolio of digital assets from a single, unified platform.
The timeline varies depending on the complexity and specific requirements. A Minimum Viable Product (MVP) for a startup might take 3-4 months. A fully-featured, compliant platform for a regulated bank, including integration with core banking systems and third-party audits, typically takes 6-12 months. We work with you to define a phased roadmap that delivers value quickly while building towards the long-term vision.
Ready to Build Your Foundation in Digital Assets?
The future of finance is being built today. Don't let security concerns or regulatory complexity leave you behind. Partner with Errna to build an institutional-grade custody solution that unlocks the full potential of digital assets for your organization.
Request a Secure Consultation