MetaMask, MetaMask without the key
sitting on your machine

Locker Protocol is a complete, free ecosystem to secure your crypto. It combines locking Smart Contracts (by time or price condition) with an air-gapped offline Vault compatible with Web3. Each user deploys their own contract - no proxy, no admin key - and remains 100% owner.

Yes, 100% free and open-source. Deploying your Locker, the Vault application and the interface are entirely free. The only costs are standard blockchain network gas fees. No platform fees, no subscription, no percentage taken from your assets.

The Vault is an application installed on a dedicated device kept permanently offline (Airplane Mode). Your private keys are generated and stored locally, never exposed to the Internet. Communication with the online app is done exclusively via QR codes - no USB, Bluetooth or WiFi.

Beyond classic time-based locking, Locker Protocol integrates with Uniswap V2/V3 on-chain oracles. You can create a conditional lock: your tokens only unlock when the market price reaches a defined target. The smart contract checks liquidity pools in real time.

For maximum security, yes - an old reset smartphone or tablet is enough. You install the Vault, switch to Airplane Mode, and the device stays permanently offline. For testing, you can also use it on your main machine.

You define an M-of-N threshold: for example 2 out of 3 signers must approve each action. Signatures are collected offline via QR codes. Once the threshold is reached, any wallet can submit the transaction and pay gas once for the entire group.

When creating the wallet, a 12 or 24-word recovery phrase is provided. Write it on paper and store it safely. If your device is lost or destroyed, install the Vault on a new offline device and import your phrase - all your keys are restored.

The interface is just a façade to interact with the blockchain. It holds no funds and no keys. All code is open-source on GitHub: download it, run it locally, and regain full access to your Locker. Your funds are on the blockchain, not with us.

Yes. The SignerManager contract allows adding, removing signers or changing the security threshold at any time. These administrative actions themselves require multi-signature approval from the current quorum.

The Paper Wallet uses AES-256 encryption protected by your password. Even if someone finds your paper, they cannot read the keys without the password. Scan the printed QR code with a new air-gapped device to instantly restore your wallet.

Never. The Vault uses no Bluetooth, NFC, WiFi, or USB. The only communication method is scanning animated QR codes (BC-UR protocol). No malware can cross this physical barrier.

Your air-gapped Vault connects to MetaMask via QR codes. You can interact with any Web3 dApp (Uniswap, Aave, etc.) while maintaining total physical isolation. Private keys never leave the offline device.

No. The protocol includes a Token Rescue function. Authorized signers can recover mistakenly sent tokens via a multi-signature action validated by the quorum.

Locker Protocol is 100% EVM-compatible and deployed on: Ethereum, Arbitrum, Base, Optimism, Polygon, BNB Chain, Avalanche and Linea.

Yes. The entire codebase - Solidity Smart Contracts, PWA web interface, and Vault cryptographic modules - is published as open-source on GitHub. Any expert can analyze every line of code.