We architect and deploy audit-ready smart contracts on EVM and Solana chains, turning your business logic into immutable, on-chain code. Our engineers specialize in Solidity 0.8+, Rust, and Anchor, using battle-tested patterns from OpenZeppelin and Solana Cookbook.
LABS
Services
Dynamic Proration & Refund Engine Development
Engineer sophisticated smart contract logic for real-time pro-rated charges, upgrades/downgrades, and automated partial refunds with high precision. Built for SocialFi & Creator Economy platforms.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3-native engineers.
Deliver a secure, functional MVP in 2-4 weeks, not months. We focus on rapid iteration and clear documentation from day one.
- Security-First Development: Every line is written with security as the primary constraint, following formal verification principles.
- Gas Optimization: We minimize transaction costs with efficient storage patterns and assembly-level optimizations where critical.
- Full Lifecycle Support: From initial spec and
Hardhat/Anchortesting to mainnet deployment and upgrade planning via proxies.
key-features-cards
WHAT WE DELIVER
Core Engine Capabilities
Our Dynamic Proration & Refund Engine is a production-ready, audited system designed to automate complex financial logic on-chain. We deliver a secure, scalable foundation so you can launch faster and operate with confidence.
01
Real-Time Proration Logic
Automated, on-chain calculation of pro-rated fees, subscriptions, and revenue shares based on time, usage, or custom business rules. Eliminates manual reconciliation and ensures 100% accuracy.
< 1 sec
Calculation Time
Gas-Optimized
EVM Chains
02
Multi-Asset Refund Engine
Secure, non-custodial refund processing for ETH, ERC-20 tokens, and stablecoins. Supports partial refunds, batch processing, and configurable approval workflows to meet compliance needs.
ERC-20/ETH
Asset Support
Non-Custodial
Security Model
03
Audited Security Architecture
Built with OpenZeppelin libraries and audited by leading security firms. Implements reentrancy guards, access control, and upgradeability patterns to protect user funds and platform logic.
OpenZeppelin
Standards
Third-Party Audits
Verification
04
Configurable Policy Framework
Flexible, on-chain rule engine for defining refund windows, fee schedules, and proration formulas. Update business logic via governance or admin functions without redeploying core contracts.
On-Chain
Rule Engine
Upgradeable
Logic
05
Event-Driven Integration Layer
Emit standardized events for all financial state changes. Seamlessly integrates with your existing off-chain accounting, analytics, and notification systems for full-stack transparency.
Standardized
Event Schema
Real-Time
Data Sync
06
Deployment & Support
We handle deployment across EVM-compatible chains (Ethereum, Polygon, Arbitrum) and provide ongoing technical support. Includes comprehensive documentation and integration guides.
Multi-Chain
Deployment
Full Docs
Included
benefits
DELIVERABLES & GUARANTEES
Business Outcomes for Your Platform
Our Dynamic Proration & Refund Engine delivers measurable improvements to your core business metrics. We focus on outcomes that directly impact your bottom line and user experience.
01
Automated Revenue Recovery
Recover up to 15% of lost subscription revenue from failed payments and churn with automated, on-chain proration logic. Our engine handles partial periods, downgrades, and cancellations without manual intervention.
15%
Revenue Recovery
0 manual
Intervention
02
Sub-Second Refund Processing
Process instant, trustless refunds directly on-chain. Eliminate support tickets and manual backend processes, reducing refund resolution time from days to under one second.
< 1 sec
Processing Time
100%
Automated
03
Audited Financial Logic
Deploy with confidence using a battle-tested engine. Our core proration and refund smart contracts are formally verified and audited by leading security firms, ensuring financial accuracy and asset safety.
Formal
Verification
Zero
Critical Issues
04
Multi-Chain & Multi-Currency Support
Serve a global user base with native support for ETH, USDC, USDT, and other major stablecoins across Ethereum, Polygon, Arbitrum, and Base. No bridging or wrapping required for core operations.
6+
Chains Supported
10+
Currencies
05
Seamless Platform Integration
Go live in weeks, not months. Our engine integrates via a simple API and modular smart contracts, designed to plug into your existing subscription management or SaaS platform with minimal disruption.
< 4 weeks
Integration Time
REST & GraphQL
API
06
Transparent & Immutable Ledger
Provide users with an immutable, on-chain record of all proration calculations, refunds, and subscription state changes. Build unparalleled trust and eliminate billing disputes.
100%
Audit Trail
On-Chain
Transparency
Choose Your Implementation Path
Development Tiers & Deliverables
Compare our structured development packages for a custom Dynamic Proration & Refund Engine, from a foundational audit to a fully managed enterprise solution.
| Feature / Deliverable | Starter | Professional | Enterprise |
|---|---|---|---|
Smart Contract Audit & Security Review | |||
Core Engine Development (Solidity) | |||
Custom Proration Logic & Rule Engine | |||
Multi-Chain Deployment (EVM) | |||
Admin Dashboard & Management UI | |||
Integration Support (API, Webhooks) | |||
Performance & Gas Optimization | |||
Post-Deployment Support Period | 2 weeks | 3 months | 12 months |
Infrastructure Monitoring & Alerting | |||
Priority SLA & On-Call Engineering | |||
Estimated Timeline | 2 weeks | 6-8 weeks | 10-12 weeks |
Starting Price | $15K | $75K | Custom |
how-we-deliver
CORE SERVICE
Custom Smart Contract Development
Secure, production-ready smart contracts tailored to your exact business logic and deployed on your chosen blockchain.
We architect and implement the foundational logic for your Web3 application. Our contracts are built for security first, gas efficiency, and real-world utility. Deliverables include:
- Audit-ready code written in
SolidityorRustfollowing OpenZeppelin and industry best practices. - Full test suites with >95% coverage, including edge cases and economic attack vectors.
- Deployment scripts & verification for mainnet and testnets (Ethereum, Polygon, Arbitrum, etc.).
- Comprehensive documentation for your team and future auditors.
We don't just write code; we engineer systems that handle value securely. Our process reduces post-launch vulnerabilities and costly re-audits.
Typical engagement: MVP contract suite in 2-4 weeks, from specification to testnet deployment. We specialize in ERC-20, ERC-721, staking mechanics, custom DAO governance, and complex DeFi primitives.
tech-stack
BUILT FOR RELIABILITY
Technology & Protocol Foundation
Our Dynamic Proration & Refund Engine is built on a robust, battle-tested technology stack designed for enterprise-grade security, performance, and compliance. We provide the foundational infrastructure so you can focus on your core business logic.
Dynamic Proration & Refund Engine
Frequently Asked Questions
Get clear answers on our development process, security, and timelines for building your custom refund logic.
We deliver a production-ready, audited Dynamic Proration & Refund Engine in 4-6 weeks for a standard implementation. This includes requirements analysis, smart contract development, comprehensive testing, and a third-party security audit. Complex integrations with existing payment systems or multi-chain deployments may extend the timeline, which we scope and quote for upfront.
ENQUIRY
Get In Touch
today.
Our experts will offer a free quote and a 30min call to discuss your project.
NDA Protected
Confidentiality24h Response
Time to ValueDirectly to Engineering Team
No Sales Fluff10+
Protocols Shipped
$20M+
TVL Overall