Introducing Aligned's Wallet-as-a-Service

If you want to bring millions of users to Ethereum, you have a wallet problem.

Seed phrases, browser extensions, and manual key management are fine for crypto-native users. They are not fine for a citizen accessing their government-issued digital identity, or a retail customer making their first on-chain payment, or an employee using an enterprise treasury tool.

Users should never see a private key, never write down twelve words, never install an extension. They should sign in the way they sign into everything else and have their wallet just work across every device they own.

That's what we're building at Aligned.

Why we're building this

Our early partners for this product are teams building applications that need to onboard millions of users who have never interacted with a blockchain. These users are not crypto-native and expect products to work with simple logins, seamless access across devices, and no specialized setup.

A seed phrase would break the experience immediately. What these applications need is invisible blockchain infrastructure with wallets that require no crypto-specific onboarding. Users shouldn't need to understand gas fees or hold native tokens to pay for them. The wallet handles that through a Paymaster that sponsors gas on behalf of users.

This is the kind of problem Aligned's Wallet-as-a-Service is designed to solve. For any team building real products on Ethereum that need to serve millions of everyday users without requiring them to understand crypto infrastructure.

The architecture

Our wallet is a smart contract wallet built on ERC-4337 account abstraction. Here's how it works:

Authentication: Users sign in with Google. No crypto-specific accounts needed.

Signing: Every transaction is signed with a passkey via WebAuthn. On Apple devices, this means Touch ID or Face ID. On Android, it's biometrics or screen lock. The passkey is generated on the device's secure enclave. When synced across devices, the key material is end-to-end encrypted by iCloud Keychain or Google Password Manager. Apple and Google cannot access it.

Security model: The wallet uses a 2-of-2 multisig. Both the user's passkey and Aligned must co-sign every transaction. This means a compromised device alone can't drain the wallet, and Aligned alone can't move user funds. The obvious question: what if Aligned's server refuses to co-sign? That's the censorship resistance problem, and we address it below.

Censorship resistance (in progress): A 2-of-2 multisig where one signer is the provider's server creates an obvious trust assumption: the server could refuse to co-sign. We're building the mechanism that eliminates this. Users will be able to retrieve their encrypted server key independently using their device key and MFA verification. If Aligned's server goes down or becomes uncooperative, users can still access their wallet.

Cross-device sync: Passkeys live in the platform's credential manager: iCloud Keychain or Google Password Manager. Set up the wallet once, use it on every device on the same account. No manual key export, no QR codes.

Recovery: If a user loses all their devices, a server guardian with timelock and multi-factor authentication provides a recovery path.

The demo

We shared our first public demo this week. It shows the full flow:

1. Sign in with Google and create a wallet. The passkey is saved to iCloud Keychain.

2. Send USDT on-chain, signed with Touch ID.

3. Open the wallet on a completely different device. The passkey is already there via iCloud sync. Send another transaction immediately.

One provider, full stack

This wallet is built for Ethereum-compatible (EVM) chains and natively integrated with Aligned's L2 offering built on top of Ethrex. If you're building on an Aligned rollup, the wallet works out of the box. One provider for the chain, the proofs, and the wallets. No need to stitch together multiple vendors.

Current Status

Done:

- Wallet deployment
- Transaction signing
- Passkey sync across devices
- Cross-device approval
- Server guardian recovery

The bigger picture

Aligned is building a fully vertically integrated infrastructure stack for Ethereum. Proof aggregation on mainnet. An L2 stack for rollups using Ethrex. A zkVM in partnership with LambdaClass and 3MI Labs. And now, a wallet-as-a-service for user onboarding.

The wallet is the closest layer to the user. It's the piece that makes everything else usable for the millions of people who will never know they're using Ethereum, and they don't need to.

Stay tuned: X | 👾 Discord | 🌐 Website | 📺 Youtube | 📝 Roadmap