Dfns

What Is Dfns?

Dfns (pronounced "defens") is a core banking platform for digital assets, founded in 2020. The company positions itself as the infrastructure layer that sits between traditional financial systems and blockchain networks, providing production-grade wallet management, transaction orchestration, and asset tokenization capabilities to regulated institutions and fintechs. Its customers include banks, custody providers, payment processors, and trading firms that need to integrate blockchain settlement into existing operations without rebuilding key management from scratch.

Dfns does not custody assets or provide financial services directly. Instead, it gives institutions the technical plumbing to do so themselves, under their own license and regulatory standing.

Core Technology: MPC-First Key Management

The defining technical feature of Dfns is its approach to private key security. Rather than generating and storing a single private key in any one location, Dfns uses a Threshold Signature Scheme (TSS) built on Multi-Party Computation (MPC). During wallet creation, the system generates encrypted key shares that are immediately distributed across geographically separate, enclaved nodes. No single location ever holds a complete private key.

When a transaction is submitted, Dfns coordinates a cryptographic ceremony among the nodes holding the relevant shares. Each participating node generates a partial signature. These partial signatures are then combined into a single valid blockchain signature — all without ever reconstructing the underlying private key at any point in the process.

This architecture has a practical consequence for security: compromising any single node, data center, or credentials layer is not sufficient to steal funds. Authentication credentials — used to authorize API calls — are deliberately separated from the key shares used to sign transactions. Credentials can be rotated, expired, or revoked; key material remains intact and controlled independently.

Beyond MPC, Dfns supports Hardware Security Modules (HSM) from Thales, IBM, Securosys, and AWS CloudHSM (added July 2026), as well as Trusted Execution Environments (TEE) via AWS Nitro, Intel TDX, and AMD SEV. Enterprises with strict sovereignty requirements can deploy the signing layer entirely on-premises with Bring Your Own Key (BYOK) options.

Products and Modules

Dfns ships a modular suite rather than a single tool:

Wallet-as-a-Service is the core offering — an API for creating, managing, and querying wallets across more than 100 blockchain networks. Developers interact with a unified REST API regardless of the underlying chain; Dfns handles chain-specific signing formats, nonce management, and fee structures. TypeScript, Python, Go, and Java SDKs are available.

Transaction Management covers the full lifecycle of a blockchain transaction: formatting, policy enforcement, multi-party approval flows, signing, and broadcasting. Institutions can configure spending limits, address whitelists, quorum requirements, and role-based approval chains through a Policy Engine.

Treasury Management provides multi-entity, multi-currency on-chain tracking, allowing large organizations to monitor balances and flows across subsidiaries and wallets from a single view.

Tokenization Engine manages the lifecycle of digital assets issued by clients — stablecoins, tokenized bonds, deposit tokens, and equity instruments. This module handles issuance, transfers, redemptions, and compliance metadata.

Governance Engine adds cryptographic intent verification for enterprise workflows, with on-premises deployment options for institutions that cannot send governance decisions to a third-party cloud.

Solana Integration

Solana is a supported network within the Dfns multi-chain API surface. In March 2026, Dfns joined the Solana Developer Platform, signaling a closer integration commitment. In June 2026, the company added support for Solana Durable Nonces — a Solana-specific mechanism that allows pre-signing transactions offline without an expiration constraint, a feature particularly relevant for custody workflows that require sign-ahead approvals or air-gapped signing flows.

Solana wallets on Dfns benefit from the same MPC-backed key management and policy engine as wallets on any other supported chain. Institutions building stablecoin payment flows, tokenized asset custody, or DeFi treasury operations on Solana can access the chain through Dfns APIs without managing Solana-specific key infrastructure directly.

Clients and Scale

Dfns reports securing more than $100 billion in client assets across more than 20 million wallets, with over $10 billion in monthly transaction volume processed and 400+ institutional clients live as of mid-2026. Notable clients named publicly include Standard Chartered, Paxos, Deblock (a French neobank with over 300,000 users), Kraken, Stripe, MoonPay, Circle, and Susquehanna. The company also estimates that roughly 1% of global stablecoin payment volume settles through its infrastructure. Historical uptime since 2022 stands at 99.997%.

Security and Audits

Dfns holds SOC 2 Type I and Type II certifications, ISO 27001, ISO 27017, and ISO 27018, all verified by KPMG. The company conducts quarterly security audits with firms including Halborn, IBM, Kudelski, Quarkslab, and Borg Security. It reports zero security breaches and zero client key losses since its operational launch in 2022.

The platform carries $15 million in annual cyber, errors and omissions, and crime insurance coverage underwritten by Beazley and Munich Re.

Additional in-progress certifications include ISAE 3000, ISO 22301, CCSS Level 3, and SOC 1.

Company and Funding

Dfns was founded in 2020 and is headquartered in Paris. In January 2026, the company announced a Series A funding round of $16 million led by Further Ventures. Prior total funding exceeds $20 million. In October 2025, IBM selected Dfns as infrastructure for its "IBM Digital Asset Haven" product. In November 2025, Dfns received WalletConnect Institutional Certified status. Dfns has integrated with more than 100 third-party services including exchanges (Binance, Coinbase, Kraken), compliance tools (Chainalysis, Notabene), core banking systems (Temenos, Thought Machine), and cloud providers (AWS, Azure, Google Cloud).

Tokens and Assets

Dfns has no native protocol token. The platform does not require users to hold or stake any asset to access its services. Pricing is enterprise and contact-sales based.