Today, Gemini announced the launch of Gemini Wallet, a self-custodial browser-native smart-contract wallet that relies on passkeys instead of seed phrases. It will also enable its users to interact directly with DeFi protocols from their Gemini accounts. And at the heart of this new product? The Biconomy Nexus stack — the most advanced, powerful and modular smart account framework in Web3.
This isn’t just another wallet integration. By building on the Nexus stack, Gemini has taken a production-proven, security-audited architecture and tailored it to their specific needs, while still benefiting from the deep standards coverage and extensibility that Nexus brings to the table.
What is the Gemini Wallet?
Gemini Wallet is a passkey-based wallet using Biconomy Nexus Account under the hood.
The magic happens with passkey-powered deterministic addressing. Using the passkey's public key as salt, Gemini creates unified wallet addresses across every supported EVM Layer 2 — meaning users enjoy the same identity everywhere, airdrops can target addresses before deployment, and multi-wallet compartmentalization becomes effortless.
But Gemini didn't stop at the core. They've built a powerful module ecosystem that ships ready on day one:
- WebAuthn validation that transforms FIDO signatures into onchain verification
- Gas sponsorship that eliminates barriers for newcomers
- Risk scanning that protects every transaction
- ENS sub-registration that provides you.gemini.eth identity anchors
Why Gemini Chose the Nexus Stack
Gemini needed a foundation that could:
- Scale to millions of users without compromising on performance or security.
- Adapt entirely to their product vision.
- Future-proof itself with support for the evolving account abstraction ecosystem.
Nexus ticked all these boxes — and more. Built on the ERC-7579 modular account standard, Nexus lets developers add, remove, or swap modules without redeploying the account itself. That means complete flexibility: new authentication flows, custom execution logic, automated strategies, and composable batching are all possible, without touching the underlying account core.
OP Stack of Smart Accounts
Just as the OP Stack created a unified ecosystem of interoperable L2s all built on an unopinionated L2 stack, Nexus is creating the "OP Stack" of smart accounts — where diverse teams build specialized applications on the same unopinionated Nexus foundation. Same pattern, different layer: both stacks remain neutral while allowing teams to be opinionated exactly where they want to be. Where the Superchain has chains optimized for mainstream adoption, creators, and DeFi, the Nexus ecosystem has teams building for identity, AI agents, yield optimization, and passkey wallets.
The network effect is identical: more L2s make the Superchain stronger through shared infrastructure, while more teams building on Nexus strengthen the stack through shared modules, standards, and battle-tested components. Instead of fragmented smart account implementations competing in isolation, we get a cohesive ecosystem where every team's innovation benefits the whole ecosystem. Nexus isn't just building smart accounts — it's building the modular account infrastructure layer that powers Web3's next generation of applications.
Diving deeper into ERC-7579 Modularity
For developers, ERC-7579 changes the game. Instead of being locked into a static account design, you can:
- Build custom modules for everything from spending limits to recovery logic.
- Leverage built-in modules to ship faster without reinventing the wheel.
- Compose transactions dynamically, where the next action depends on the output of the previous one.
- Deploy cross-chain, with unified account addresses on every major EVM chain.
Gemini has done exactly that. By building on the Nexus stack, they’ve adapted the wallet to their exact needs through features that allow for custom modules, fine-tuning the execution flow, transaction handling, and integration points to align with Gemini Wallet’s unique architecture. This modularity allows them to roll out new capabilities over time — without ever having to redeploy user accounts — ensuring that the wallet can evolve alongside the rapidly changing DeFi landscape.
It’s this combination of flexibility, extensibility, and proven mainnet reliability that made the Nexus stack the perfect starting point for Gemini Wallet.
An Open Invitation to Developers
Gemini isn’t alone in this approach — many leading teams are already building on the Nexus stack to create their own tailored smart account experiences. Some adapt it for wallet products, others for protocol-native accounts, automation flows, or DeFi onboarding tools.
Biconomy’s message to the Web3 community is simple:
Build on the Nexus stack, adapt it to your needs, and make it your own — or deploy it instantly using the built-in plugin modules.
With Gemini building on the Nexus stack, and more teams joining in, we’re seeing a new chapter in modular, standards-driven, self-custodial wallets — one where developers are in full control, and users get the security and flexibility they need.