Apply For SandBox Grant DAO :ZeroxWallet was Built For Next Billions Users in this Space

[ZeroxWallet]

ZeroX Wallet is a smart contract wallet built on Arbitrum that enables zero-gas, seedless onboarding using ERC-4337, Paymasters, and social login. Users can sign in with email or social accounts and execute transactions without ever touching gas or seed phrases.We’re also building a lightweight SDK that allows Arbitrum dApps to offer frictionless onboarding and gas sponsorship to their users.Our goal is to make Arbitrum the easiest L2 for users and developers by removing the biggest onboarding barriers: gas fees, bad UX, and technical friction.

What is the current stage of your project ?.

ZeroX Wallet is currently in the development and prototyping phase.

Core smart wallet contracts (ERC-4337) are under development.

Paymaster integration with Arbitrum testnet is in progress.

Basic frontend + social login flow is live locally.

MVP launch is planned for August 2025 on Arbitrum Sepolia.

Internal testing of sponsored transactions and bundler interactions is ongoing.

We’re prioritizing Arbitrum-first development and will release a public testnet demo + open-source repo shortly.

Do you have a target audience? If so, which one.

Everyday Users (non-technical / new to Web3).Users who struggle with seed phrases, high gas fees, or complex wallets.

Onboarding into DeFi, gaming, and social dApps without friction.

Mobile-first users who expect Web2-like login and instant transactions.

Arbitrum dApp Developers & Teams Builders who want to offer gasless onboarding.Projects that need smart wallet UX + SDK for better retention.

dApps losing users at the wallet connection or transaction signing step.

By serving both, ZeroX Wallet improves onboarding, conversion, and UX across the Arbitrum ecosystem — especially for mobile and mainstream adoption.

Outline the major deliverables you will obtain with this grant.

Major Deliverables (Next 8–12 Weeks).

ZeroX Smart Wallet (ERC-4337 Compliant) Deploy smart contract wallet on Arbitrum Sepolia.Integrate Paymaster for gas sponsorship.

Include session keys, batching, and social recovery support.

Gasless Transaction Flow (Live Demo).Working prototype for gasless transactions using bundler + paymaster.

Frontend with email/social login + transaction signing UX.

Developer SDK v1Lightweight JS SDK for dApps to integrate wallet + sponsor gas.

Includes documentation and plug-and-play onboarding modal.

Public Testnet LaunchHost public testnet version of wallet on Arbitrum Sepolia.

Open-source core components on GitHub (wallet, SDK, Paymaster wrapper).

Integration with at Least 1 Arbitrum dApp (Pilot).Collaborate with 1–2 early-stage dApps for testing and feedback.

Validate UX, Paymaster costs, and SDK integration in real usage.

These deliverables will help Arbitrum projects reduce onboarding friction, increase user retention, and make smart wallet infra more accessible across the ecosystem.

What is your requested grant.

We are requesting $30,000 in funding to support development, testing, and deployment of ZeroX Wallet on Arbitrum.

This will cover

Smart Wallet Dev.Amount - $12000.

Contract logic, bundler, ERC-4337 integration

SDK + Dev Tools.Amount - $7000

SDK-Development , integration examples , docs.

PayMaster Infra.Amount - $4000

Backend Services , Relayers , Test gas Sponsoring.

Testing & Ecosystem PilotAmount - $4000

Public Testnet, Pilot integration with Dapps.

Audit Prep + Ops.Amount - $3000

Internal Audits , Ops , bug bounties.

The funds will help us complete the MVP, run a testnet launch, and onboard early Arbitrum dApps using the SDK — with everything built Arbitrum-first and open-source.

Please provide a detailed breakdown of the budget in term of utilizations, costs and other relevant information.

Smart Wallet DevelopmentERC-4337 compliant wallet contracts, bundler integration, social recovery, contract testing.

Amount - $12000

SDK & Dev Integration ToolsJavaScript SDK for dApps, onboarding modal, integration guide, open-source documentation.

Amount - $7000

Paymaster InfrastructureGas sponsoring infra, relayer backend, testnet bundler deployment, service monitoring.

Amount - $4000

Testing, QA & Pilot dApp Integration.User testing on Arbitrum Sepolia, QA cycles, pilot integration with 1–2 Arbitrum dApps.

Amount - $4000

Audit Prep & Operational Expenses.Internal audits, code refactoring, bug bounty setup, developer tools and deployment costs.

Amount - $3000

Total - $30000

Provide a list of the milestones, with the USD amount of the grant associated to it, the deliverables that will be provided, and the estimated completion time.

Milestone Plan — ZeroX Wallet

1).Core Wallet Contracts & Bundler Setup

Amount - $8000

ERC-4337 smart wallet contracts on Arbitrum testnet.Session key support.Local bundler & account factory deployed.Paymaster Integration + Gasless FlowAmount - $6000

Paymaster integrated and sponsoring gas on Arbitrum Sepolia.Full gasless. transaction flowInternal gas cost tracking.SDK v1 + Frontend DemoAmount - $6000

Lightweight SDK (npm) to integrate wallet + gasless flow into any dApp.Developer documentationWeb demo with social/email login.Public Testnet Launch + Open SourceAmount - $5000

Public testnet deployment of ZeroX WalletGitHub repo (wallet, paymaster wrapper, SDK)Live walkthrough/demo + usage guide.Pilot Integration + FeedbackAmount - $5000

Integration with 1–2 Arbitrum dApps (demo/pilot)Dev feedback round + SDK improvementOptional community call/demo. Total Timeline: ~10–12 weeks.

Total Grant Requested: $30,000.

What is the estimated maximum time for the completion of the project.

Estimated Maximum Time for Completion.

We estimate a maximum completion time of 12 weeks from the grant approval date.

This includes

9 weeks for development, testing, and open-source release.

3 additional weeks for pilot integration, feedback, and improvements.

We’ve structured the project into 5 measurable milestones, each with a clear timeline and deliverables. This ensures steady progress and accountability throughout the grant cycle.

What is the economic plan for maintaining operations or continuing the growth of your project after the grant period.

Post-Grant Economic Plan for Growth and Sustainability.

After the grant period, our focus is to grow ZeroX Wallet into a self-sustaining, ecosystem-aligned protocol. Here’s how we plan to continue operations and scale

Integration-as-a-Service (Freemium SDK Model) Offer the SDK and wallet infra free for public good and small dApps.For larger dApps or custom use cases, introduce tiered API access or sponsored plans.

Helps offset infra costs (relayers, paymaster) and scale sustainably.

Paymaster Fee Abstraction.Implement a dynamic sponsorship pool, where dApps stake or top up ETH to cover their users’ gas.

Introduce optional usage-based fees to sustain Paymaster backend.

Keeps the wallet gasless for users while giving dApps flexibility.

Ecosystem Collaborations & Co-Marketing.Partner with Arbitrum-native DeFi, gaming, and social dApps for joint onboarding flows.

Launch co-branded “1-click login + zero-gas” campaigns to drive mutual adoption.

Future Grant Rounds & Strategic Partners.Apply for follow-on grants via ecosystem funds (e.g., Arbitrum STIP, gaming, and builder funds).

Explore integrations with infra partners like Alchemy, Privy, or Web3Auth.

Optionally raise a small pre-seed to scale engineering + infrastructure if traction validates.

Open-Source + Community Contributions.Open-sourcing the wallet + SDK allows for community contributions, bug fixes, and new feature proposals.

Explore a community-owned governance model if user base grows significantly.

Goal: Make ZeroX Wallet the default onboarding layer for Arbitrum — and sustain it through value-aligned usage, partners, and low-friction monetization (without charging users directly).

Protocol Performance.

Protocol Performance (ZeroX Wallet)

Scalability

Built on Arbitrum to leverage low fees and high throughput.

Smart wallet + Paymaster stack processes >100 tx/min with minimal latency.

Off-chain bundler + session keys reduce on-chain calls and improve UX.

Efficiency

Gasless transactions via ERC-4337 + Paymaster architecture.

Reduced friction in user onboarding: no native ETH needed.

Optimized wallet design to minimize calldata and overhead.

Reliability

Bundler and Paymaster designed for 95%+ uptime and fallback support.

Wallet logic is modular and upgradeable for better maintainability.

Real-time logs and transaction success monitoring.

Security

Uses battle-tested ERC-4337 standards.

Future audit planned before mainnet.

Separation of wallet, bundler, and sponsor roles ensures compartmentalized risk.

Audit History & Security Vendors.

Audit History & Security VendorsAudit Status

The project is currently in early development and has not yet undergone a formal audit, as it is in the testnet and MVP phase.

Security Plan

We plan to conduct an audit of the smart wallet contracts and Paymaster logic prior to any mainnet deployment.

Vendors (Planned):We are exploring reputable security vendors for a formal audit, including

Code4rena -community-driven audit contests.

Sherlock

0xMacro - Hats Finance (depending on Arbitrum ecosystem support)

OpenZeppelin security review (if budget permits).

Interim Measures

All contracts follow ERC-4337 standards

Code is modular and will be open-sourced for public review.

Unit + integration tests will be >90% coverage.

Paymaster and bundler roles are isolated to reduce risk exposure.

ZeroxWallet Social Handles

Twitter :- https://x.com/ZeroxWalletDiscord :- ZeroxWalletsTelegram:- ZeroxWalletsGitHub :- LinkedIn:- https://in.linkedin.com/in/twein-chris-800469374

Thanks for reading the our Grant Proposal and hope would be Selected for the Program.

[Victoran]

I would like to ask; How would this benefit the TSB?

And how do you plan on executing it if applicable?

[theKuntaMC]

Any thoughts from our community, @Delegates , or @domainallocators on this one?

Thanks for the submission, @ZeroxWallet !

[hishmad]

Thanks for putting this proposal together. I have some questions I’d like your help understanding.

1. What metrics will you use to validate that ZeroX Wallet reduces onboarding friction for non-technical users?

2. How will you prevent user errors or fund loss due to the abstraction of seed phrases and gas fees?

3. How does ZeroX Wallet differentiate itself from competitors like Ambire, Coinbase Smart Wallet, or Safe, which also leverage ERC-4337?

4. What is the long-term vision for ZeroX Wallet’s role in the Arbitrum ecosystem beyond the grant period?

[shont]

read through the proposal. I like the goal—tackling onboarding friction is exactly what the ecosystem needs.

But honestly, a few things are holding me back.

My biggest question mark is the team. The proposal is basically anonymous, and the only link is a single LinkedIn profile. For a $30k grant, we really need to know who is building this and what their track record is. It’s a tough sell to back a project without knowing the people behind it.

Also, the account abstraction space is super competitive with giants like Privy and Biconomy. I’m not seeing a clear ‘why you’ll win’ here beyond being “Arbitrum-first.” The post-grant sustainability plan also feels more like a list of ideas than a concrete business strategy.

I’m leaning towards ‘no’ for now, but I’m open to changing my mind. I’d need to see much more transparency on the team and a sharper competitive strategy before I could comfortably vote yes. Looking forward to your response.

[Biversen]

Why Arbitrum?

What will be the benefit for Sandbox?

[ZeroxWallet]

Q1. What metrics will you use to validate that ZeroX Wallet reduces onboarding friction for non-technical users?

Answer: We will measure onboarding success through clear usability metrics:

Onboarding Completion Rate: % of users who successfully create a wallet without dropping off. (Target: >85%)

Time-to-First Transaction: Average time from sign-up to completing a first transaction. (Target: under 2 minutes, compared to 10+ mins in seed-based wallets).

Support Queries Reduction: Tracking fewer support requests related to seed phrases or gas fees.

User Surveys/NPS: Gathering feedback from non-technical users to validate that the experience feels “as simple as using a Web2 app.

These metrics will be tracked in both testnet pilots and the early mainnet launch.

Q2. How will you prevent user errors or fund loss due to the abstraction of seed phrases and gas fees?

Answer: We’re addressing this with layered safety mechanisms:

1. Smart Recovery: Users can set recovery options via trusted contacts, social login, or 2FA.

2. Transaction Simulation: Every transaction will show a simulation/preview before execution, reducing mistakes.

3. Gasless Sponsorship: Since transactions are sponsored, users are not blocked or confused due to missing ETH.

4. Audited Smart Contracts: We’ll use well-tested ERC-4337 standards, conduct security audits, and follow best practices for fund custody.

This way, user errors are minimized, and even in the case of device loss, accounts remain recoverable.

Q3. How does ZeroX Wallet differentiate itself from competitors like Ambire, Coinbase Smart Wallet, or Safe, which also leverage ERC-4337?

Answer: While Ambire, Coinbase Smart Wallet, and Safe are strong players, ZeroxWallet is uniquely positioned for mainstream adoption:

Seedless + Gasless Combo → Most competitors offer one of these, not both in a simple flow.

Privacy-First Design → Unlike Coinbase, ZeroxWallet does not tie identity to centralized KYC by default.

Mobile-First Simplicity → UI/UX designed for non-technical users, similar to Web2 apps.

Open Infrastructure → Our SDK and paymaster infra will be available for dApps to integrate directly, making it a tool for ecosystem-wide adoption.

Focus on Emerging Ecosystems (like Arbitrum) → Instead of competing head-on with incumbents on Ethereum mainnet only, we’re actively building on Arbitrum where frictionless onboarding is highly needed for gaming, DeFi, and NFT use cases.

Q4. What is the long-term vision for ZeroX Wallet’s role in the Arbitrum ecosystem beyond the grant period?

Answer: Our long-term vision is to make ZeroxWallet the default onboarding layer for Arbitrum dApps.

Post-Grant Phase (6–12 months): Expand from MVP into a fully integrated wallet + SDK used by multiple Arbitrum dApps.

User Acquisition: Help onboard the “next million users” into Arbitrum by reducing seed/gas barriers.

Ecosystem Growth: Enable game developers, NFT creators, and DeFi protocols on Arbitrum to offer a 1-click, gasless onboarding experience via ZeroxWallet.

Sustainability: Generate revenue through paymaster sponsorships, SDK licensing, and premium services—ensuring we continue development beyond grant funding.

Ultimately, ZeroxWallet aims to be the Web2-to-Web3 bridge for Arbitrum, lowering friction and driving mainstream adoption across the ecosystem.

[ZeroxWallet]

Hi Shont,

Thanks a lot for your thoughtful feedback. I’d like to clarify a few points to address your concerns:

1. On Team Transparency & Track Record

ZeroxWallet is being built by a small but experienced founding team with backgrounds in Web3 development, security engineering, and product design. While the proposal only had my LinkedIn attached, we’re happy to share more transparency:

Core team size: 3 builders (1 smart contract engineer, 1 full-stack developer, 1 product/UX lead).

Experience: Team members have contributed to Ethereum ecosystem open-source projects and previously worked with startups in wallets and infra tooling.

Next Step: We’ll update our proposal with a team section (Twitter profiles) & Also Share our Project ( GitHub + Website ) to give DAO members full clarity.

2. On Competitive Landscape (Privy, Biconomy, etc.)

You’re right that account abstraction is competitive. ZeroxWallet differentiates by focusing on mass adoption UX + multichain support rather than infra dominance:

Multichain-first: While we are integrating with Arbitrum early, ZeroxWallet is designed as a multichain wallet (EVM + non-EVM), allowing users and dApps to onboard seamlessly across ecosystems. Arbitrum is just one of our first strong partners.

End-user first: Unlike infra-heavy competitors, ZeroxWallet is built to feel Web2-like seedless, gasless, mobile-first.

Privacy-first: We don’t tie users to centralized identity providers, unlike Coinbase Smart Wallet.

Open SDK: Protocols can embed ZeroxWallet as a white-label onboarding solution.

So instead of competing infra-vs-infra, our strategy is UX + multichain adoption + privacy.

3. On Sustainability Beyond the Grant

The grant helps bootstrap, but we already have a clear plan:

Sponsored Transactions (Paymaster Model): Protocols/dApps pay to onboard their users gaslessly.

SDK/White-label Licensing: Revenue from partners embedding ZeroxWallet into their own flows.

Premium Features for Power Users: Advanced analytics, cross-chain swaps, etc.

This is not just an idea—we’re already in early discussions with protocols who need this solution.

[ZeroxWallet]

Thanks Biversen for Looking into This.

Why Arbitrum?

We chose Arbitrum because it has one of the largest and fastest-growing ecosystems of dApps, DeFi protocols, and DAOs, with extremely low fees and strong developer adoption. Since ZeroxWallet’s mission is to make Web3 onboarding frictionless (seedless, gasless, user-friendly), launching on Arbitrum first ensures that we can serve the biggest pool of active users and developers who actually need this.

Also, Arbitrum’s ecosystem is highly community-driven, and our account abstraction approach (ERC-4337) can directly improve retention and user activation rates across Arbitrum protocols.

What is the benefit for Sandbox DAO?

Supporting ZeroxWallet creates network-wide benefits:

Lower onboarding friction → more users: New users entering Sandbox or any Arbitrum ecosystem dApp can join without dealing with seed phrases or gas fees.

DAO reputation: Sandbox DAO becomes seen as an early backer of real user-centric infra, improving its influence in Arbitrum governance.

Shared growth: As ZeroxWallet is open-source and multichain, Sandbox and its ecosystem projects can integrate the wallet SDK to onboard users directly. This means more traffic, more users, and more activity for the DAO’s broader ecosystem.

In short: Arbitrum gives us scale, and Sandbox DAO gets both ecosystem growth and reputational value as a core enabler of adoption.

[ZeroxWallet]

Thanks for your question, Victoran

ZeroXWallet can directly benefit the Sandbox ecosystem in the following ways:

1. Frictionless Onboarding for Sandbox Users – Many new users of The Sandbox face challenges with setting up wallets, managing seed phrases, and paying gas. ZeroXWallet simplifies this by providing a seedless, gasless, one-click onboarding, making it easier for casual gamers and creators to join the Sandbox world.

2. User Retention & Growth – By lowering technical barriers, we reduce drop-off rates and help Sandbox onboard a wider demographic of non-crypto native users. This aligns with Sandbox’s mission of expanding its metaverse community.

3. Security & Recovery – Our account abstraction model minimizes risks of user error and lost funds, creating a safer environment for Sandbox participants.

4. Multichain & Flexibility – While we are building Arbitrum-first, ZeroXWallet is multichain by design. This means Sandbox users can benefit from broader ecosystem interoperability over time.

Execution Plan:

Phase 1 (Grant period): Integrate ZeroXWallet with Sandbox’s onboarding flow on Arbitrum, enabling testnet → mainnet trials.

Phase 2: Collect usage metrics (onboarding success rates, retention, tx success) from Sandbox users.

Phase 3: Expand multichain support, ensuring Sandbox users benefit from scalability and cost efficiency across chains.

In short, our goal is to make it effortless for new Sandbox users to join, stay, and transact, removing the technical friction that currently slows ecosystem growth.

[DAO]

Not needed ATM.

While we await the transition that’s happening in TSB, all infrastructure projects should not go through.

For all we know we have SAND chain coming up, and this is just speculation.

[Biversen]

I agree.

I hope the Sand Chain project remains just speculation. It’s unnecessary and meaningless.

[ZeroxWallet]

So What about the Decision for Move Further.

[theKuntaMC]

SIP Ideas are invited to curation phase when they receive clear community support through comments and/or up-votes (in the top left corner).

This idea has, so far, only received questions and critiques.

So, you’ve probably got to garner stronger support for this before it advances.