Institutional-Grade Crypto Custody Integration
Secure, scalable, and compliant digital asset custody solutions, engineered for FinTech innovators, exchanges, and enterprises.
Launch faster and de-risk your operations with our battle-tested, AI-enabled custody infrastructure.
Trusted by the Innovators Building the Future of Finance
The Strategic Advantage of Our Custody Integration
Go beyond a simple API. We provide a complete custody ecosystem designed to accelerate your growth, mitigate risk, and ensure you stay ahead of the curve.
Unbreakable Security
Leverage our AI-monitored, multi-layered security architecture, combining MPC-TSS, hardware security modules (HSMs), and institutional-grade cold storage. Your users' assets are protected by the highest standards in the industry.
Accelerated Time-to-Market
Don't spend years and millions on building custody infrastructure. Integrate our developer-friendly REST APIs and SDKs to launch secure crypto products in weeks, not years. Focus on your core business, not complex key management.
Built-in Regulatory Compliance
Navigate the complex global regulatory landscape with ease. Our platform includes pre-built tools for KYC/AML, transaction monitoring, and automated reporting, helping you meet compliance obligations from day one.
Enterprise-Grade Scalability
Our cloud-native infrastructure is engineered for high-throughput and low-latency performance. Whether you have a thousand users or ten million, our system scales seamlessly to meet your demand without compromising speed or security.
Broad Asset & Blockchain Support
Offer your users a diverse range of digital assets. We provide out-of-the-box support for hundreds of cryptocurrencies and tokens across dozens of blockchains, with a streamlined process for adding new assets as you grow.
Dedicated Integration Partnership
We're more than a provider; we're your partner. Our expert solutions architects provide dedicated support throughout the integration process, ensuring a smooth, efficient, and successful launch.
Future-Proof Your Platform
The digital asset space evolves rapidly. Our platform is continuously updated to support emerging technologies like DeFi protocols, staking, governance, and asset tokenization, ensuring your product remains competitive.
Transparent & Predictable Costs
Avoid the unpredictable costs and risks of in-house development. Our clear pricing models—based on factors like AUM and transaction volume—provide cost certainty and allow you to scale your business efficiently.
Comprehensive Insurance Coverage
Provide an extra layer of confidence for your users and stakeholders. We offer comprehensive crime and specie insurance policies from leading underwriters, protecting assets against theft and loss.
Our Comprehensive Crypto Custody Services
We offer a modular suite of services that can be combined to create the perfect custody solution for your specific needs, from simple wallet creation to complex institutional workflows.
Wallet-as-a-Service (WaaS)
Instantly create and manage secure, segregated wallets for your users via a simple API call.
- Generate millions of unique deposit addresses programmatically.
- Support for HD (Hierarchical Deterministic) wallets for enhanced security and management.
- Full control over wallet creation, balance queries, and transaction history.
MPC-Powered Hot & Warm Wallets
Secure online assets with our cutting-edge Multi-Party Computation (MPC) technology, eliminating single points of failure.
- Key shares are distributed, meaning no single device or person ever holds a complete private key.
- Enable fast, secure, and automated withdrawals for your users.
- Define complex transaction policies and approval workflows.
Institutional Cold Storage
Protect the majority of your assets in geographically distributed, air-gapped, bank-grade vaults.
- Utilize multi-signature and hardware-based approval processes for withdrawals.
- Benefit from robust physical and procedural security controls.
- Regular, independent audits and proof-of-reserves reporting.
Secure Transaction Broadcasting
A reliable and resilient system for broadcasting signed transactions to various blockchains without exposing your infrastructure.
- Smart fee estimation to ensure timely transaction confirmation.
- Automated nonce management to prevent transaction conflicts.
- Real-time monitoring and alerting for transaction status.
Broad Blockchain & Asset Support
Integrate once to access a vast and growing ecosystem of digital assets and blockchain networks.
- Support for major L1s, L2s, and thousands of ERC-20, BEP-20, and other tokens.
- Rapid integration of new blockchains and assets based on client needs.
- Unified API structure for interacting with different chains.
Staking & Governance API
Enable your users to earn rewards and participate in protocol governance directly from their wallets.
- Automate staking, delegation, and reward distribution processes.
- Provide secure infrastructure for voting on governance proposals.
- Offer staking-as-a-service to generate new revenue streams.
DeFi & Web3 Integration
Securely connect your users' custodied assets to the world of decentralized finance and Web3 applications.
- Integrate with major DeFi protocols for lending, borrowing, and trading.
- Utilize WalletConnect and other standards for secure dApp interaction.
- Implement policy controls to manage DeFi risk exposure.
NFT & Digital Collectibles Custody
Provide secure storage and management for high-value NFTs and other unique digital assets.
- Support for major NFT standards like ERC-721 and ERC-1155.
- Display rich metadata and media for NFTs within your application.
- Securely transfer and manage ownership of unique tokens.
Tokenization Platform Integration
Securely custody tokenized real-world assets (RWAs), securities, and other digital instruments.
- Support for security token standards like ERC-1400.
- Enforce on-chain compliance rules and transfer restrictions.
- Integrate with issuance platforms and secondary markets.
Customizable Policy Engine
Design and enforce granular, multi-layered transaction policies to fit your exact operational and security needs.
- Set withdrawal limits, whitelisted addresses, and time-locks.
- Require multi-user approvals for high-value transactions.
- Automate workflows based on transaction size, destination, or asset type.
KYC/AML Integration Services
Seamlessly integrate with leading identity verification and AML providers to onboard users and comply with regulations.
- Automate user identity checks and risk scoring.
- Connect to our transaction monitoring partners for real-time AML screening.
- Maintain a clear audit trail for regulatory reporting.
AI-Powered Transaction Monitoring
Leverage our AI engine to screen all incoming and outgoing transactions against global AML and sanctions watchlists.
- Detect and flag suspicious activity in real-time.
- Utilize blockchain analytics to trace the source and destination of funds.
- Generate automated reports for suspicious activity (SARs).
Comprehensive Audit & Reporting
Access detailed, immutable logs of all activity within your custody environment for internal and external audits.
- Generate on-demand reports for transaction history, user balances, and policy changes.
- Provide proof-of-reserves data to build trust with your users.
- Achieve SOC 2 and ISO 27001 compliance for your operations.
Full-Service White Label Custody
Launch your own branded, institutional-grade custody solution without any of the underlying infrastructure development.
- Fully customizable UI/UX to match your brand identity.
- We manage all backend operations, security, and blockchain node infrastructure.
- The fastest way to become a qualified custodian in your jurisdiction.
Dedicated Security Operations (SecOps)
Benefit from our 24/7 security team that monitors for threats, manages incidents, and continuously hardens the platform.
- Proactive threat intelligence and vulnerability management.
- Incident response planning and execution.
- Regular penetration testing by third-party security experts.
Your Path to Secure Custody: A 4-Step Process
We've streamlined the integration journey to be clear, efficient, and collaborative, ensuring you get to market quickly and securely.
1. Discovery & Solution Architecture
We start with a deep dive into your business goals, technical requirements, and compliance needs. Our solutions architects work with your team to design the ideal custody infrastructure and integration plan tailored to your specific use case.
2. Sandbox Integration & Testing
You receive access to our comprehensive sandbox environment, complete with API keys, SDKs, and detailed documentation. Your development team can build and test the full integration in a secure, isolated environment with active support from our engineers.
3. Security & Compliance Review
Before going live, we conduct a joint security review. This includes validating your policy engine configuration, reviewing access controls, and ensuring all compliance workflows are correctly implemented. This step is critical to ensure a secure and compliant launch.
4. Production Launch & Ongoing Support
Once all checks are passed, we provision your production environment and assist with the go-live process. Post-launch, you receive ongoing 24/7 technical support, access to platform updates, and a dedicated account manager to support your continued growth.
An Uncompromising, Defense-in-Depth Security Architecture
Security is not a feature; it's the foundation of everything we do. Our platform is built from the ground up with multiple, independent layers of protection to safeguard digital assets against all threat vectors.
Multi-Party Computation (MPC)
We eliminate the concept of a single private key. Keys are split into multiple shares, encrypted, and distributed. Signing requires multiple parties to compute a signature without ever reconstructing the full key, removing the single greatest point of failure.
Hardware Security Modules (HSMs)
Key shares are generated and stored within FIPS 140-2 Level 3+ certified HSMs. This ensures that even in the unlikely event of a server compromise, the raw key material is never exposed and remains protected by physical tamper-proof hardware.
Air-Gapped Cold Storage
The vast majority of assets are held in our institutional cold storage system, which is completely disconnected from any network. Withdrawals require a coordinated, multi-person, physical process across geographically diverse, bank-grade vaults.
Technology Stack & Tools We Master
Our platform is built on a foundation of robust, scalable, and secure technologies, ensuring reliability and performance.
Real-World Success Stories
See how leading companies have leveraged our custody integration to launch innovative products, enhance security, and scale their operations.
Case Study: Enabling a Neobank to Launch Crypto Trading in 90 Days
Industry: FinTech & Digital Banking
Client Overview: A fast-growing neobank with over 2 million users wanted to add cryptocurrency trading and holding features to their mobile app. They needed a secure, compliant, and easy-to-integrate solution that wouldn't distract their core engineering team from their main banking product roadmap.
Key Challenges:
- Lack of in-house expertise in blockchain technology and digital asset security.
- An aggressive timeline to launch the feature before competitors.
- Strict regulatory requirements for handling customer funds.
- The need for a seamless user experience that felt native to their existing app.
Our Solution:
We provided our full Wallet-as-a-Service (WaaS) and MPC-powered hot wallet API. Our solution included:
- A dedicated solutions architect to map their user flows to our API endpoints.
- Rapid setup of a sandbox environment for their developers to begin integration on day one.
- Integration with their existing KYC provider and our transaction monitoring partners.
- A scalable wallet infrastructure that could instantly create accounts for their entire user base.
Client Testimonial:
"Errna was the perfect partner. Their custody API was clean, well-documented, and their support team was phenomenal. We went from concept to a full crypto trading launch in one quarter, which would have been impossible to do in-house."
Case Study: Upgrading a Regional Exchange to Institutional-Grade Security
Industry: Cryptocurrency Exchange
Client Overview: A mid-sized regional crypto exchange was experiencing rapid growth but was running on a legacy custody system with a single-server hot wallet. They were concerned about security vulnerabilities and their ability to scale to meet increasing user demand and attract institutional clients.
Key Challenges:
- Significant security risk from a single point of failure in their hot wallet.
- Inability to get comprehensive insurance coverage for their assets.
- Operational bottlenecks in moving funds between hot and cold storage.
- Difficulty in adding new blockchains and assets quickly.
Our Solution:
We implemented a hybrid custody solution, migrating their hot wallets to our MPC platform and integrating their existing cold storage with our policy engine. This involved:
- A phased migration plan to move assets with zero downtime.
- Implementing a robust policy engine with multi-user approvals for all large withdrawals.
- Automating the process of rebalancing funds between their hot and cold wallets.
- Providing our broad asset support, allowing them to list 50+ new tokens within two months.
Client Testimonial:
"Migrating our custody to Errna was a game-changer. Our security posture is now world-class, which allowed us to secure a major insurance policy and onboard our first institutional clients. Their platform is rock-solid."
Case Study: Securing Corporate Treasury for a Publicly Traded Company
Industry: Enterprise & Corporate Finance
Client Overview: A forward-thinking, publicly traded technology company decided to allocate a portion of their corporate treasury to digital assets. They required a highly secure, audited, and transparent custody solution that would satisfy their board of directors and external auditors.
Key Challenges:
- Need for a "qualified custodian" solution to meet governance requirements.
- Requirement for complex, multi-level approval workflows involving C-level executives.
- The necessity of regular, auditable reporting for financial statements.
- Zero tolerance for security risks or operational errors.
Our Solution:
We deployed our institutional cold storage solution combined with a strictly-controlled warm wallet for limited operational use. The key components were:
- A bespoke policy configuration requiring 3-of-5 executive approvals for any movement of funds.
- Use of hardware security devices for all approvers to sign transactions.
- Integration with their internal accounting systems for automated reporting.
- Providing all necessary documentation to satisfy their auditors, including SOC 2 reports.
Client Testimonial:
"Errna provided the security, governance, and reporting capabilities we needed to confidently hold digital assets on our balance sheet. Their professionalism and attention to detail were exactly what our board required."
What Our Partners Say
"The security architecture is second to none. Integrating Errna's MPC wallets allowed us to scale our user base without the constant fear of a catastrophic hot wallet breach. Their team understands security from first principles."
"As a product manager, I needed an API that was flexible and easy to work with. Errna delivered. We were able to build a seamless crypto experience for our users, and the ability to quickly add new assets is a huge competitive advantage."
"From a compliance perspective, Errna is a dream. The built-in transaction monitoring and the detailed audit logs make regulatory reporting straightforward. They understand the challenges of operating a regulated financial services business."
"The decision to use Errna instead of building in-house saved us at least 18 months and millions in R&D. We were able to focus our resources on our unique value proposition, knowing the critical custody piece was handled by experts."
"The staking and DeFi integration APIs opened up entirely new revenue streams for us. Our users can now put their assets to work directly from our platform, which has dramatically increased customer retention and assets on platform."
"We manage assets for high-net-worth individuals and family offices. Trust is everything. Errna's institutional-grade cold storage and rigorous security protocols give our clients the peace of mind they demand."
Frequently Asked Questions
Multi-Party Computation (MPC) is a cryptographic technology that allows multiple parties to jointly compute a function (like signing a transaction) without revealing their individual secret inputs. For custody, this means a private key is split into multiple shares held by different parties/systems. To sign a transaction, a threshold of these parties must cooperate, but the full key is never reconstructed in any single location. This eliminates the single point of failure associated with traditional private keys, providing superior security for online wallets.
The timeline varies depending on the complexity of your use case, but our goal is to get you to market as quickly as possible. For a standard Wallet-as-a-Service integration, clients can often go from starting development to a production launch in 8-12 weeks. Our clear documentation, robust SDKs, and dedicated support team are all designed to accelerate this process.
We support all major Layer 1 blockchains (Bitcoin, Ethereum, Solana, etc.), leading Layer 2 networks (Polygon, Arbitrum, Optimism), and thousands of tokens, including ERC-20, BEP-20, and SPL standards. Our platform is blockchain-agnostic, and we have a streamlined process for adding new chains and assets based on client demand, typically within a few weeks.
Yes. We maintain a comprehensive insurance policy with leading underwriters in the specie market. Our policy covers digital assets against third-party theft, including collusion, and loss of keys. We can provide details of our insurance coverage under an NDA to qualified clients.
Absolutely. Our powerful policy engine is a core feature of our platform. You can create highly granular and flexible rules, such as requiring multiple approvers for transactions over a certain value, enforcing withdrawal whitelists, setting daily velocity limits, and implementing time-locks. These policies are fully customizable via our API or dashboard to fit your specific operational security needs.
We have a dedicated blockchain operations team that actively monitors for network events like hard forks and airdrops. We assess each event for technical feasibility and security. For supported events, we manage the entire process to ensure that the assets of your users are credited safely and efficiently, with minimal operational burden on your team.
Ready to Build on a Secure Foundation?
Let's discuss how our custody integration can accelerate your roadmap, enhance your security, and unlock new opportunities in the digital asset economy. Schedule a free consultation with our solutions architects today.
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