Expensive Crypto Payroll

• Employees must pay gas fees to withdraw their own salary
• Small salaries get eaten up by transaction costs

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Complex International Payments

• Traditional banks charge high conversion fees
• Slow cross-border transfers (days to weeks)
• Currency exchange rate uncertainty

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Unsustainable Web3 Payroll

• Current solutions don't scale (gas costs too high)
• No revenue model for long-term sustainability

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What Opera Does

• Gasless for employees: Zero withdrawal fees using DeFi yield
• Multi-token flexibility: Pay in USDC or EURC globally
• Instant settlement: On-chain payments, no banking delays
• Sustainable model: Yield generates protocol revenue while covering costs
• Transparent: All transactions visible on Base blockchain

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Opera makes crypto payroll practical and affordable for global teams by eliminating gas fees through smart DeFi yield generation.

Migrating from Single-Token to Multi-Token Architecture

• Initially built for USDC only, needed to support both USDC and EURC
• All hooks, contract calls, and formatting functions were hardcoded to USDC
• Solved by creating a centralized token configuration system and token-agnostic utility functions
• Refactored all components to accept dynamic token parameters

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Transaction History Not Showing Token Types

• Event logs didn't distinguish which token was used in transactions
• Users couldn't tell if a payment was USDC or EURC
• Fixed by adding tokenSymbol field to all transaction events
• Updated parsing logic to extract and display the correct token for each transaction

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Employee List Loading Indefinitely

• Dashboard stuck on loading when trying to fetch employee data
• Root cause: Contract ABI missing the mapping accessor for employee lists
• Workaround: Simplified UI to show employee count only with a clear warning message
• Avoided breaking changes to the smart contract by adjusting frontend expectations

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Two-Step Token Approval Flow

• ERC-20 tokens require approval before contract can spend them
• Registration flow needed both approval and registration transactions
• Implemented sequential flow with proper state management and loading indicators
• Added user feedback showing "Approving..." then "Registering..." progress

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Designing a Sustainable Gasless Model

• Challenge: How to make employee withdrawals gasless without losing money?
• Explored using employer deposits to generate DeFi yield via Aave
• Designed 110% deposit model: 100% for salaries, 10% generates yield to cover gas fees
• Yield surplus becomes protocol revenue, creating a sustainable business model

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Choosing the Right Paymaster Solution

• Researched Reown AppKit vs Coinbase Developer Platform for gasless transactions
• Evaluated trade-offs: multi-chain flexibility vs native Base integration
• Documented both options for future implementation based on scaling needs

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Key Takeaway: Building with extensibility in mind from the start (multi-token, multi-chain support) would have saved significant refactoring time. Always design core architecture to be flexible for future growth.

https://github.com/bri-anadi/opera

https://opera-io.vercel.app

Unlike traditional crypto payroll platforms where employees pay expensive gas fees to withdraw their own salary, Opera makes withdrawals completely free by using DeFi yield to cover all transaction costs.

The Innovation:

• Employers deposit 110% of payroll (100% salaries + 10% yield pool)
• The 10% generates ~3-5% APY through Aave V3
• Yield automatically covers employee gas fees + creates protocol revenue
• Employees get 100% of their salary with zero withdrawal costs

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Key Differentiators:

• Zero-Fee for Employees - Withdrawals are completely gasless, unlike competitors where gas fees eat 5-10% of salary
• Self-Sustaining Revenue - Protocol earns from DeFi yield excess, not from user fees or subscriptions
• Multi-Token Support - Pay in USDC or EURC with flexible per-employee token selection
• Built on Base L2 - Fast, cheap, and transparent on-chain payroll tracking

Primary Audience

1. Web3 Companies & DAOs
   • Crypto startups with remote teams
   • DAOs paying global contributors
   • Blockchain projects with distributed workforce
   • Pain: Employees lose 5-10% of salary to gas fees
2. Remote-First Startups (5-50 employees)
   • Tech companies with international teams
   • Digital agencies hiring globally
   • SaaS startups avoiding traditional banking
     Pain: International transfers are slow (3-7 days) and expensive (3-5% fees)
3. Freelancer Networks
   • Creator communities managing payouts
   • Gig platforms distributing earnings
   • Pain: Micro-payments impractical with current fees

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Ideal User Profile

1. Employers: Small-medium businesses comfortable with stablecoins, have remote/international teams, want transparent and cost-efficient payroll
2. Employees: Accept USDC/EURC salary, located globally, want instant access without losing money to fees

Main Competitors

1. Request Network (request.network)
   • What they do: Crypto invoicing and payment requests, supports multiple tokens
   • Limitation: Employees still pay gas fees for withdrawals
   • Opera's difference: Zero gas fees through DeFi yield generation
2. Bitwage (bitwage.com)
   • What they do: Crypto payroll with fiat off-ramps, Bitcoin/stablecoin support
   • Limitation: Charges 1-2% fee per transaction, employees pay withdrawal fees
   • Opera's difference: No platform fees, gasless withdrawals, self-sustaining revenue model
3. Rise (rise.global)
   • What they do: Crypto payroll for Web3 companies, supports multiple chains
   • Limitation: Gas fees passed to employees, subscription-based pricing
   • Opera's difference: Yield-powered gasless model, no subscriptions
4. Deel (deel.com) - Crypto Payroll Feature
   • What they do: Global HR platform with crypto payment option
   • Limitation: Traditional fee structure (49-599/month), centralized platform
   • Opera's difference: Decentralized, transparent on-chain, DeFi-powered revenue instead of fees

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What Makes Opera Different?

Core Innovation is DeFi Yield-Powered Gasless Model

• Competitors: Charge fees OR pass gas costs to employees
• Opera: 10% deposit generates yield → covers gas fees + creates revenue

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"The money pays for itself" - Opera is the only payroll platform where deposited funds generate their own distribution costs through DeFi yield, creating a sustainable model that benefits everyone:

• Employers: No ongoing fees, just one-time 10% yield pool deposit
• Employees: Zero gas fees, instant withdrawals
• Protocol: Revenue from excess yield, not user pockets

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Technical Edge
Built on Base L2 for low costs + Aave integration for reliable yield generation Bottom Line: While competitors digitize traditional payroll, Opera reimagines it using DeFi primitives to eliminate the gas fee problem entirely.