Secure, audited smart contract systems built for production.
We deliver production-ready smart contracts with a focus on security, gas optimization, and upgradability. Our development process includes:
Solidity 0.8+ using OpenZeppelin standards.Every contract undergoes a multi-stage security review before deployment. We provide a detailed audit report and can facilitate third-party audits with leading firms like CertiK or Trail of Bits.
Typical Deliverables:
NatSpec comments.A systematic, security-first approach to migrate your mobile wallet from L1 to rollups without disrupting your users or compromising on security.
We conduct a comprehensive audit of your current wallet architecture, token standards, and user flows. Our team defines the optimal rollup strategy (ZK-Rollup vs. Optimistic) and creates a phased migration plan to minimize risk.
Our engineers refactor and deploy your core wallet logic (custody, multi-sig, bridging) as verifiable smart contracts on the target rollup (Arbitrum, Optimism, zkSync). Every contract undergoes internal review and formal verification.
We rebuild your mobile SDKs and backend APIs to interface with the new rollup RPC endpoints. This includes integrating new signature schemes (e.g., EIP-712 for rollups) and ensuring seamless transaction bundling and state synchronization.
We implement a secure, automated process to bridge user assets and state (balances, NFTs) from L1 to the new rollup. This includes creating non-custodial migration tools and clear in-app user guidance to ensure a smooth transition.
We deploy the migrated wallet to a staging environment that mirrors mainnet. Our QA process includes load testing for high TPS, cross-device compatibility checks, and simulated attack vectors to ensure resilience.
We manage the coordinated production launch with feature flags and canary releases. Post-launch, we provide 24/7 monitoring of rollup sequencer health, gas prices, and bridge security with automated alerts.
Migrating your mobile wallet from an L1 to a rollup isn't just a technical upgrade—it's a direct path to measurable business growth. Here's what you can expect when you partner with Chainscore.
We architect your wallet to leverage rollup-specific fee structures, reducing user transaction costs by 10-100x compared to L1. This directly improves user retention and enables micro-transactions.
Engineer near-instant transaction confirmations by moving settlement off the congested mainnet. This eliminates user wait times and creates a seamless, responsive wallet experience.
Maintain the security guarantees of Ethereum L1 while benefiting from rollup scalability. Our migration includes comprehensive security reviews and inherits the underlying L1's battle-tested security.
Build on a modular stack (OP Stack, Arbitrum Nitro, zkSync Era) designed for interoperability and easy upgrades. Avoid vendor lock-in and adapt to new scaling innovations as they emerge.
Offload node infrastructure management and data availability concerns to the rollup sequencer. Focus your engineering resources on core product features, not chain maintenance.
Leverage our battle-tested migration frameworks and pre-audited contract libraries. Deploy a production-ready, gas-optimized wallet on your chosen rollup in weeks, not months.
A detailed comparison of the cost, risk, and time required to migrate your mobile wallet infrastructure from a monolithic Layer 1 to a high-performance rollup stack.
| Key Factor | Build In-House | Partner with Chainscore |
|---|---|---|
Time to Market | 6-9 months | 4-8 weeks |
Initial Development Cost | $250K - $500K+ | $75K - $150K |
Security & Audit Overhead | High (unaudited, custom risk) | Low (pre-audited patterns, formal verification) |
Rollup-Specific Expertise | Requires hiring/ramp-up | Included (Optimism, Arbitrum, zkSync) |
Ongoing RPC & Indexer Management | Your DevOps team | Fully managed service |
Cross-Chain State Sync Complexity | Your team builds & maintains | Handled by our migration framework |
Mobile SDK Integration Support | Documentation only | Direct engineering support |
Total Year 1 Cost (Est.) | $400K - $750K+ | $120K - $200K |
Our migration process is built on deep, hands-on experience with the core protocols and infrastructure required for a seamless, secure transition. We don't just move wallets; we architect them for the future.
We design and deploy custom smart contracts optimized for your chosen rollup (Arbitrum, Optimism, zkSync, Starknet). This includes gas-efficient account abstraction modules, secure bridging logic, and rollup-native fee management systems.
Proprietary tooling for secure, non-custodial private key migration from L1 to L2. We implement industry-standard MPC (Multi-Party Computation) or social recovery frameworks to eliminate single points of failure during the transition.
Engineered systems to maintain real-time balance and transaction state consistency between the L1 parent chain and the L2 rollup. Ensures a unified user experience and prevents data fragmentation.
We provision and manage high-availability, dedicated RPC endpoints and archival nodes on your target rollup. This ensures reliable data access, fast transaction propagation, and eliminates third-party API dependencies.
A structured, phased approach to migrating your mobile wallet's core infrastructure from a congested L1 to a high-performance rollup, minimizing downtime and technical debt.
| Phase & Key Activities | Week 1-2 | Week 3-4 | Week 5-6 | Week 7-8 |
|---|---|---|---|---|
Discovery & Architecture | Requirements analysis, L1 audit, rollup selection (Arbitrum, Optimism, zkSync) | Finalize migration blueprint, smart contract redesign plan | ||
Core Development | Refactor & deploy core wallet logic (ERC-4337, key management) | Integrate rollup RPC, build bridge UI/UX, implement gas sponsorship | ||
Testing & Security | Unit & integration tests for new contracts | Comprehensive staging environment testing, third-party audit engagement | Penetration testing, final security review | |
Deployment & Go-Live | Phased user migration, mainnet deployment, monitoring setup | |||
Post-Launch Support | 24/7 monitoring for 30 days, performance optimization, user support handoff | |||
Estimated Engineering Cost (Savings vs. In-House) | $15K - $25K | $20K - $35K | $25K - $40K | $15K - $25K |
Total Project Timeline | 2 weeks | 2 weeks | 2 weeks | 2 weeks |
Get clear answers on migrating your mobile wallet's user base and assets from an L1 to a rollup. We address the most common technical, security, and timeline questions from CTOs and product leads.
A complete, production-ready migration typically takes 3-6 weeks from kickoff. This includes architecture design, smart contract development, SDK integration, testing, and mainnet deployment. For a standard EVM L1 to L2 migration, we've delivered core functionality in as little as 2 weeks. The timeline scales with wallet complexity, custom features, and the number of target rollups.
Our experts will offer a free quote and a 30min call to discuss your project.