Vultisig Extension

Vultisig Extension integrates Vultisig into web applications, enabling users to securely sign blockchain transactions.

Vultisig is a seedless crypto wallet: an open-source MPC wallet that replaces the seed phrase with key shares spread across your own devices. This extension brings it into Chrome as a browser extension wallet for web3, so you connect to DeFi apps and sign transactions on Bitcoin, Ethereum, Solana and 30+ chains with no seed phrase anywhere in your browser. WHAT THE VULTISIG EXTENSION DOES Open a DeFi app, click connect, review the transaction, sign. Swaps, staking, dApps: the sites you already use, now with multisig-style security behind every signature. It works as a standalone wallet or as a companion to the Vultisig app on your phone and desktop. WHY A SEEDLESS WALLET Think of a bank vault that needs 2 of 3 keys to open. One stolen key opens nothing. Vultisig works the same way. Your private key never exists in one place, so browser malware, phishing pages and lost devices stop being catastrophic. A seed phrase is a single point of failure. We removed it. MPC WALLET, EXPLAINED Multi-party computation (MPC) splits your key into shares. Each share lives on a device you own. To sign, a threshold of them cooperate, and the full key is never assembled anywhere. It is the same category of protection large custodians rely on, in a browser extension you control. Multisig security without a multisig contract, which means it works on chains that have no smart contracts at all, like Bitcoin. ONE VAULT, 30+ CHAINS Your vault holds Bitcoin, Ethereum and EVM networks, Solana and the Cosmos ecosystem side by side, with one signing flow for all of them. Adding a chain never means adding another wallet. GET STARTED Create a vault directly in the extension in under a minute, import one you already have, or pair with the Vultisig app and sign with multiple devices. Your vault, your rules. OPEN SOURCE Everything is public at github.com/vultisig under the Apache 2.0 license. Never trust, verify.