MPCVault

Enterprise crypto custody has long been the preserve of institutional giants, leaving the middle tier of Web3 businesses poorly served. MPCVault was built to close that gap. Founded in 2020 by CEO Jason Li and CTO Webster Bei and operating as MetaLoop Inc. out of Sunnyvale, California, MPCVault offers non-custodial, multi-party computation (MPC) wallet infrastructure pitched specifically at crypto-native businesses: trading firms, venture capital funds, Web3 startups, exchanges, and anyone managing a shared on-chain treasury at scale.

The MPC Architecture

At the core of MPCVault's design is a three-party key distribution scheme. When a wallet is created, the signing key is never assembled in one place. Instead it is split into three cryptographic shares: one held on the user's own device, one stored in a Google Cloud environment protected by an AMD SEV secure enclave, and one stored in a Microsoft Azure environment using Intel SGX. All three shares must cooperate to authorize any transaction. No single party — not the user's device, not Google, not Azure, not MPCVault itself — ever holds enough material to sign unilaterally.

Communication between the parties runs over the Noise protocol, which means even MPCVault's own infrastructure cannot read session data in transit. Three additional layers compound the baseline security: key rotation refreshes all three shares on a rolling schedule; a patented hardened address derivation scheme prevents exfiltrated shares from tracking new wallet addresses; and every transaction passes through phishing detection, behavioral analysis, address verification, and on-chain simulation before it is presented to approvers.

Multi-Chain Coverage Including Solana

MPCVault supports Ethereum, Bitcoin, Solana, TRON, TON, Aptos, Sui, and the full EVM-compatible chain set from a single platform. For Solana specifically, this means SPL token management, staking workflows, and DeFi interactions can all run through the same approval and audit rails as a firm's Ethereum or Bitcoin positions — a meaningful operational advantage for teams running multi-chain strategies rather than juggling separate custody solutions per network. In August 2026, MPCVault added Stellar, continuing a steady expansion of its network coverage.

Approval Workflows and Team Operations

Approval rules can be defined against transaction type, asset, amount threshold, destination address, or time window, and can require different quorums for different scenarios. Policies are hierarchical, with role-based access controls that let organizations grant limited operational permissions to junior team members without exposing root-level signing authority.

Batch operations let a single approved transaction bundle payments to hundreds of recipients simultaneously — useful for token distributions, payroll in crypto, or airdrops. REST and gRPC APIs plus a Client Signer SDK enable automation for trading operations and exchange settlement desks. WalletConnect and MetaMask Institutional integrations extend reach to browser-based DeFi access.

Scale and Traction

MPCVault launched its multi-signature wallet product in January 2023 and reached $500 million in assets under management within seven months (TechCrunch, August 2023). Since launch it has grown to more than 1,000 active organizations processing over $2 billion in daily transaction volume. The platform holds SOC 2 Type II certification renewed for 2024.

Beyond Custody

MPCVault has extended the platform into in-app DeFi access, a Visa debit card for crypto-denominated business spending, and fiat off-ramp via bank transfer — combining custody, payments, DeFi access, and fiat conversion under one approval policy set.

Solana Ecosystem Fit

For Solana-based projects, MPCVault fills a specific need: institutional-grade, non-custodial treasury control without the cost or complexity of top-tier custodians. A Solana-native protocol managing its own treasury, a trading firm running a Solana desk alongside EVM strategies, or a VC fund holding SOL and SPL tokens across multiple portfolio positions can run all of it through one platform with unified approval workflows and a single audit log.