Crypto Custody Solutions: Why Businesses Need Safe Storage of Digital Assets
In recent years, the digital asset market has evolved from an experimental environment for enthusiasts to a mature, rapidly developing industry with institutional participation. Companies operating in Web3, fintech, investments, logistics, gaming, real estate and even in the traditional banking sector are increasingly using cryptocurrencies, tokens, NFTs and other digital assets as a means of payment, an investment instrument or part of business processes. In such an environment, the issue of reliable and controlled storage of digital assets is becoming crucial.
Crypto Custody (custodial solutions for storing crypto assets) is becoming a critical element of the digital economy infrastructure. It is not just a technological module, but a guarantee of security, compliance with regulatory requirements and the readiness of a business to scale. The choice and quality of the custodial solution determines key aspects: protection from external threats, investment safety, legal recognition of assets, speed of transactions and trust from customers and partners.
With the explosive growth of real world asset tokenization (RWA), the integration of blockchain with enterprise systems, and the growing popularity of decentralized finance (DeFi), companies are facing new challenges: how to ensure multi-level key protection, how to manage access within the team, how to automate transaction control, and how to comply with international standards such as ISO 27001, SOC 2, MiCA, or AMLD.
This is especially true for companies working with client funds or assets worth millions of dollars: for them, losing access to a wallet, a leak of a private key, or a regulatory failure can result in not just losses, but legal consequences and a collapse of reputation. Moreover, even startups and Web3 projects need to consider the asset storage architecture in advance — the wrong decision at the beginning can lead to costly migration in the future.
Thus, custodial solutions in 2025 are no longer an optional add-on, but a necessary foundation for a digital business infrastructure. The quality of implementation determines not only the security of assets, but also the legitimacy of operations, the ability to work in global markets and scale a business without security threats.
What is Crypto Custody
Crypto Custody is a service or system for storing digital assets, ensuring their security, availability and compliance with regulatory requirements. Unlike self-custody (self-storage, as in hardware wallets or mobile applications), custodial solutions involve transferring control over keys to a trusted provider or institutional system. There are three basic approaches to storage:
- Hot wallets are wallets with constant Internet access. Convenient, but vulnerable.
- Warm wallets are an intermediate option with limited access.
- Cold wallets — offline storage, on hardware devices or isolated systems. They are extremely secure, but difficult to manage.
Businesses choose custodial solutions for the following reasons:
- Risk management — the loss of a private key in self-custody means a complete loss of assets. Custodial solutions reduce such risks.
- Regulatory compliance — institutional participants are required to use certified systems.
- Scalability and audit — large companies require integration of custodial solutions with corporate IT infrastructure, the ability to manage access, log transactions and conduct audits.
Why it Really Matters
According to Chainalysis, hackers stole more than $2.3 billion in crypto assets in 2024 alone, more than 40% of which was due to compromised hot wallets and weak private key protection.
High-profile cases include the $41 million hack of the Stake.com platform and the $15 million loss of a venture fund in Asia due to an improperly configured MPC system. These cases confirm that insufficient attention to custodial solutions puts both crypto assets and companies’ reputations at risk.
Modern Solutions in the Field of Crypto Asset Storage
By mid-2025, a stable pool of custodial providers focused on institutional clients, fintech companies and crypto platforms has formed on the market.
Major players:
Anchorage Digital
An American custody platform with an OCC banking license. It uses enterprise-class solutions: MPC, cold storage, offline access. It is focused on institutional clients, NFT storage, and participation in staking. Anchorage’s advantage is its «qualified custodian» status, recognized by American regulators.
BitGo
One of the first institutional custody providers. The BitGo family of wallets allows you to accept payments in 26 cryptocurrencies. The service is provided to both private and corporate clients. According to official data, the platform processes 20% of the world’s Bitcoin transactions. BitGo also implements the ability to store NFT assets created on the basis of the ERC-721, ERC-1155 and CryptoPunks blockchain standards. Applications for managing Android and iOS devices are available. Uses multi-signature, combines hot and cold storage, and is SOC 2 compliant. Supports access from the US and Switzerland. Ideal for multi-tier asset management in funds and hedge funds. Includes DeFi connectivity and distributed control tools.
Ledger Enterprise
Institutional division of a well-known hardware wallet manufacturer. HSM-based solutions with extended access rights for teams.
Copper (UK)
Actively promotes off-exchange settlement (ClearLoop) and solutions for hedge funds.
Coinbase Custody
An institutional-grade solution from the American crypto exchange Coinbase. Certified according to SOC 1/2 standards and uses cold segregated storage. Availability is average — the service is focused on funds, ETFs, and large corporations. Regulated in the United States (including the SEC and NYDFS). Offers reporting, DAO voting, and integration with institutional investment vehicles, including crypto ETFs.
Fireblocks
An enterprise platform with a focus on security and customization. Based on MPC (multi-party computing) technology, it works in real time, with built-in controls and a «firewall» approach. Very high availability — used as a backend platform by many fintechs. Jurisdictions: US and Israel.
Fireblocks features powerful API integration, built-in treasury, access to DeFi protocols, and liquidity management.
Kraken Custody
A separate institutional line from the Kraken crypto exchange. It uses cold licensed storage and is focused on the North American market — mainly the US and Canada. It offers solutions for funds, trading companies, and family offices.
Revolut Crypto
A custody service built into the Revolut fintech app ecosystem. It is designed for retail users working with cryptocurrencies within the banking app. Storage is implemented via Fireblocks. Very high availability, including via a bank account. Jurisdictions include UK and Lithuania.
Open-source and custom solutions based on Gnosis Safe, Trezor libs, OpenZeppelin Defender are also actively developing, which can be integrated into the customer’s infrastructure.
Multisig and MPC: Comparing Approaches to Cryptographic Key Management
Multisig is a mechanism whereby a transaction must be signed by multiple keys belonging to different participants. For example, in a 2-of-3 scheme, a transaction can only be executed after confirmation by two of the three authorized parties.
This approach is intuitive and is widely used in first-generation blockchains (Bitcoin, Litecoin) and in many EVM networks (Ethereum, Polygon).
The advantages of multisig are transparency, ease of implementation, and good support at the protocol and wallet level.
However, it has limitations: binding to a specific blockchain and the need for re-deployment when the composition of participants or conditions change (for example, if one of the keys is compromised or lost).
MPC (multi-party computation) is a more modern and flexible cryptographic approach, in which the private key never exists entirely in one place. Instead, its parts (shards) are distributed among several parties that jointly sign transactions without revealing their shares to each other.
This allows achieving similar security without the use of smart contracts or the specifics of a particular blockchain. MPC is especially popular in cloud infrastructure, among custodial services and fintech platforms that need to manage keys in a distributed environment.
Key advantages are scalability, flexibility in managing access policies (e.g. temporary rights, dynamic quorum), the ability to rotate participants without changing the address.
Among the disadvantages of MPC are increased cryptographic complexity, difficulty in debugging and the need to trust the correct implementation of the algorithm (libraries).
Nevertheless, leading custodial providers such as Fireblocks and Coinbase Prime actively use MPC in production, and in 2025, open-source solutions (e.g. ZenGo X, MPCLib) appeared that simplify the implementation of this technology in corporate infrastructures.
Overall, the choice between multisig and MPC depends on the business model, security requirements, and technical maturity of the team.
Multisig remains a solid choice for transparent on-chain scenarios and DAOs, while MPC is the de facto standard for institutional custody, where secure automation and scalability are key.
Crypto Custody Trends for 2025
1. Growing Institutional Demand
According to a May 2025 PwC report, more than 52% of traditional financial institutions in the US and Europe either already use crypto custodianship or plan to implement it in the next 12 months.
These include banks, investment funds, and payment providers. Custody is becoming a critical element for trading tokenized securities, CBDCs, and DeFi ETFs.
2. Rise of MPC technologies MPC has become the standard for custody for exchanges, market makers, and infrastructure companies.
The new generation of MPC solutions includes: adaptive quorum policy (e.g. 3 out of 5 participants); disaster recovery capability; distribution between cloud zones and offline components; protection against timing attacks and side channels. MPC-based custody solutions successfully compete with cold storage in terms of security, while being more flexible and responsive.
3. Regulatory requirements
In 2024–2025, regulatory initiatives have intensified: MiCA came into force in the EU, requiring licensing of crypto custodians.
In the US, the SEC and OCC have clarified their positions on the role of custody banks in the digital asset ecosystem.
In Asia (Singapore, Hong Kong, South Korea), there are strict requirements for storing client funds, including certification of solutions according to SOC2, ISO 27001, CCSS standards.
Technological Aspects and Custom Development of Custody Solutions
Although the market for custody solutions is rapidly developing, many companies, especially those working in the niches of DeFi, Web3, fintech, RWA and cross-chain infrastructure, are faced with the fact that ready-made solutions (off-the-shelf custody platforms) do not meet their specific requirements.
This may be due to the application architecture, internal security policies, business logic features or regulatory restrictions in certain jurisdictions. In such cases, the only reasonable way is to develop a custom custody solution adapted to a specific technology stack, use cases and access control requirements.
This approach provides not only flexibility, but also control over the level of trust, which is critical for products that process high-value digital assets or interact massively with external users.
Key Architectural Modules of a Custody System
Key Management (KMS)
The central part of any custody system. Implementation is possible based on:
- HSM (hardware security module) — hardware key protection.
- MPC — distributed storage and signing without a single point of failure.
- MultiSig — on-chain signatures involving multiple keys (in DAO, NFT marketplaces, etc.).
Access Control
Approaches such as RBAC (role-based access control), setting up rights via ACL, integration with corporate IAM (identity & access management) systems (e.g. Keycloak, Okta, AWS IAM), two-factor authentication, access time/location policies are used.
Transaction Signing
Provided via: Tight execution environments (TEE), e.g. Intel SGX, Nitro Enclaves; delayed signing with manual approval; connection of external approvers (for example, compliance officers or multisig participants).
Audit and Observability
Full logging of all operations, signed action logs, integration with SIEM (Security Information and Event Management) systems, the ability to conduct an independent audit or forensic analysis of incidents.
Tools and Platforms to Speed up Development
To avoid building everything from scratch, custom development uses proven open-source components and standardized cloud solutions:
Open-source frameworks:
Gnosis Safe is a popular multisig wallet for Ethereum and EVM networks.
Substrate Custody is a module for creating custodial services based on Polkadot.
Cosmostation Vault is a solution for storing and interacting with Cosmos SDK blockchains.
Integration with cloud providers:
AWS Nitro Enclaves are isolated computing environments for secure key processing.
Google Cloud Confidential VMs — virtual machines with hardware protection of memory and data.
Azure Confidential Ledger — secure immutable event log.
HSM solutions:
Thales Luna — the industry standard for banks and custody providers.
YubiHSM2 — compact HSM devices for SMB and embedded applications.
Ledger Enterprise Vault — a solution from a hardware wallet manufacturer adapted for the corporate segment.
Integration of Custody Colutions with DeFi and TradFi
Modern custody solutions are no longer isolated. In 2025, integration with trading and financial platforms is relevant:
DeFi: connection to DEX, DAO, NFT protocols with support for MPC, custodial proxies and signing meta-transactions.
TradFi: storage of tokenized stocks, bonds, real-world assets (RWA) with MiFID II and Basel III compliance.
Financial services: crypto wallets, banking applications, payment gateways.
Custody services are becoming the “backend” for: crypto exchanges (off-chain settlement); neobanks (white-label custody); digital asset marketplaces; CBDC infrastructure.
Conclusion
In 2025, custody solutions are no longer just a way to securely store cryptocurrencies — they have become a key infrastructure layer that builds trust in digital assets on a global scale.
Today, custody is not only about protecting private keys, but also about access management, compliance, auditability, and integration with a variety of external platforms — from trading platforms and DeFi protocols to enterprise ERP and banking systems.
With the development of technologies such as multi-signature, MPC, hardware security modules (HSM), as well as the emergence of regulatory standards (MiCA, ISO 27001, SOC2), the custody infrastructure is becoming mature and adaptive to the requirements of both the traditional financial sector and Web3 ecosystems.
More and more large investors, banks, insurance companies, hedge funds, fintech startups, and corporate clients are considering reliable custody as an integral part of their strategy for working with digital assets.