Introduction
Passkey-based authentication and transaction signing for smart accounts. Build secure, gasless, cross-chain applications without the complexity.
What is 1auth?
1auth provides a complete authentication and transaction signing solution built on top of WebAuthn passkeys and smart contract accounts. It enables your users to interact with blockchain applications using just their device's biometrics - no seed phrases, no browser extensions, no gas fees.
Motivation
Traditional wallet experiences create friction at every step. Users must manage seed phrases, install browser extensions, manage gas tokens, and understand complex blockchain concepts before they can interact with applications. The goal of 1auth is to abstract all this with a simple, but powerful, embedded wallet solution that leverages passkeys.
Passkeys are an open source tool that any developer can leverage. So why use 1auth? Building a produciton-ready passkey wallet from scratch is hard:
- Key recovery - If a user loses their device, how do they regain access? Passkeys sync across devices via platform providers (such as iCloud and Google), but coordinating this with onchain accounts in a self-custodial manner requires careful architecture.
- Crosschain key management (i.e., keystore) - Passkey credentials must be mapped to smart account ownership across multiple chains, with proper validation methods deployed and maintained onchain.
- Crosschain complexity - A single user action might require bridging assets, managing random gas tekens to execute on a different chain, and monitoring multiple transactions.
- Gas abstraction - Users shouldn't need native tokens on every chain. Sponsoring gas requires paymaster integration and infrastructure across all supported chains.
1auth handles all of this so you can focus on your application.
The advantages of 1auth
- Full self-custody - Users hold their own keys in device secure hardware. 1auth never has access to private key material.
- Transact on any chain - One account works across all supported chains with automatic bridging and unified balances.
- No seed phrases, no extensions - Users authenticate with Face ID or Touch ID, in any modern browser.
- Gasless by default - Transactions are sponsored. Users never need native tokens.
1auth Use Cases
Fintechs
Build applications with crypto functionality while maintaining a non-custodial architecture. Because 1auth never holds keys, your application can align with unhosted wallet classifications under MiCA, SEC, and FinCEN frameworks. See Self-Custody & Compliance.
Crypto Consumer Apps
Create a clean new user onboarding experience using familiar web2 flows (Oauth, SSO, etc) that is fully self-custodial, highly performant (with transaction signing local to the user), and with great economics (passkeys leverage existing device hardware at zero infrastructure cost).
DeFi Onboarding
Bring new users into DeFi without the traditional wallet setup barrier. 1auth's EIP-1193 provider works with viem, wagmi, and ethers, so you can integrate with existing DeFi tooling while offering a Web2-like sign-up experience.
Multi-Chain Applications
Build applications that work across chains without users managing multiple wallets or bridging assets manually. 1auth accounts have unified balances and execute transactions on any supported chain from a single signature.
Agents
Generate wallets for AI agents or enable co-piloted self-custodial wallets between your users and agents using session keys for scoped agent spending authorisations.
Self-Custody
1auth is built on a fully self-custodial architecture. Private keys are generated and stored exclusively in the user's device secure hardware (Secure Enclave, TPM). 1auth cannot access, reconstruct, or use private keys—and cannot sign transactions or censor users on their behalf.
This means users have true ownership of their assets with no third-party risk, while developers benefit from reduced compliance burden.