MPCVault

MPCVault is a non-custodial wallet platform built for teams that need to manage digital assets at scale without handing control to a third-party custodian. The product runs on multi-party computation (MPC) — a cryptographic technique that eliminates the single private key that traditional wallets create, and the single point of failure that comes with it. Founded in 2022, MPCVault has grown to serve more than 1,000 active organizations, including crypto exchanges, DeFi funds, trading desks, and venture capital firms, processing over $2 billion in daily transaction volume across the networks it supports.

Security Architecture

The core of MPCVault's model is a three-share key distribution system. When a wallet is created, the private key material is split into three shares and stored in separate, physically isolated environments:

• User device: One share remains on the user's own hardware, never leaving their control.
• Google Cloud: A second share is held inside an AMD SEV-protected secure enclave.
• Microsoft Azure: A third share resides in an Intel SGX secure enclave.

Transaction signing requires cooperation from all three locations simultaneously. The complete private key is never reconstructed at any point in the process — not on the user's device, not on MPCVault's servers, not anywhere. This architecture removes the custodial risk that applies to centralized exchanges and traditional hot wallets, while also removing the catastrophic single-user-error risk of self-custodied hardware wallets.

Communication across all three parties is end-to-end encrypted using the Noise protocol, implementing a zero-trust design in which MPCVault's own servers cannot read wallet data or transaction content.

Beyond the basic three-share model, MPCVault has built two additional security mechanisms that distinguish it from standard MPC implementations. The first is a patented hardened key derivation system: even when new addresses are generated for ongoing operations, former team members cannot link new addresses back to the master key they previously had access to — a meaningful gap in competing MPC products that allows departing signers to silently track treasury activity. The second is automated key rotation: if any single share is suspected compromised, the system automatically refreshes and invalidates the old share without interrupting wallet operations.

MPCVault holds SOC 2 Type 2 certification.

Supported Networks

MPCVault supports multi-chain asset management from a single interface across:

• Solana (including all SPL token types)
• Ethereum and all EVM-compatible networks
• Bitcoin
• TRON
• TON
• Aptos
• Sui
• Movement

The Chrome browser extension extends DApp connectivity to Aptos, Solana, Sui, TON, and Movement alongside the EVM chains reachable via standard Web3 providers.

Solana Integration

Solana support enables teams to create dedicated SPL wallets, interact with Solana DApps through MPCVault's browser extension or in-app browser, and apply the same approval controls available on other chains. Organizations can configure access controls and USD volume-based transaction policies specifically for Solana operations, enforcing the same governance standards across all assets regardless of which network they live on.

This matters in practice because teams managing Solana assets alongside EVM portfolios previously had to maintain parallel tooling, with separate key management and approval workflows for each chain. MPCVault consolidates those workflows, applying consistent policy enforcement across the full multi-chain exposure from one platform.

Operational Features

Approval workflows: Organizations configure signing rules by transaction type, destination address, token, volume threshold, or time window. Multi-sig requirements are set per policy rather than per wallet, allowing different controls for routine operating payments versus large treasury movements.

Batch sending: Payroll distributions and bulk token transfers can be submitted in a single operation, reducing operational overhead for teams making recurring payments to many recipients.

DeFi access: WalletConnect, MetaMask Institutional connectivity, a Chrome extension, and an in-app browser cover DeFi protocol interactions without requiring assets to leave the MPC custody model.

Programmatic access: REST and gRPC APIs plus a Client Signer SDK allow operations teams and developers to automate signing flows, build approval integrations, or connect MPCVault to internal treasury management systems.

Fiat access: A Visa debit card and fiat off-ramp functionality let organizations spend and convert assets without needing a separate payment infrastructure layer.

Security History: A dedicated audit page provides a full log of historical signing requests and approvals, giving compliance and security teams the ability to investigate any request retroactively.

Target Users

MPCVault's design targets institutional and professional crypto users: cryptocurrency exchanges that need hot wallet infrastructure without full custodial exposure, DeFi funds operating across multiple chains, Web3 companies managing operational treasuries, and trading desks requiring fast programmatic access with governance controls. The Chrome Web Store listing carries a 4.8 out of 5 rating across user reviews, suggesting the product functions reliably in daily operations.

Summary

MPCVault addresses the core tension in institutional crypto operations: teams need fast, programmable access to assets across multiple chains, but both full self-custody and third-party custody introduce risks that are unacceptable at scale. The three-shard MPC model with hardware-backed cloud enclaves, automated key rotation, and zero-trust communication removes those risks without sacrificing operational speed or cross-chain reach. For Solana-native teams and multi-chain organizations with Solana exposure, the platform provides native SPL support and DApp access under the same custody framework as their EVM and Bitcoin holdings.