We architect and deploy custom smart contracts that form the immutable backbone of your Web3 application. Our development process ensures security-first design, gas optimization, and comprehensive testing before mainnet deployment.
LABS
Services
dApp User Journey Transaction Preview
We develop end-to-end transaction simulation for your complete dApp user flows. Enable your product team to visualize, debug, and optimize multi-step sequences and associated costs before deployment.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built to your exact specifications.
- Protocol Development: Build custom
ERC-20,ERC-721,ERC-1155, and bespoke token standards. - DeFi & DEX Logic: Automated market makers (AMMs), liquidity pools, staking, and yield farming contracts.
- Security Audits: All code undergoes internal review and is prepared for third-party audits from firms like CertiK or OpenZeppelin.
- Full Lifecycle Support: From initial design and development to deployment, verification, and ongoing maintenance.
We deliver contracts that are secure by default, reducing your time-to-market and mitigating the risk of costly exploits.
key-features-cards
BUILT FOR PRODUCTION
Core Capabilities of Our Transaction Preview System
Our system delivers a professional-grade transaction preview experience, designed to eliminate user anxiety and reduce failed transactions for your dApp. We handle the complex blockchain simulation so you can focus on your core product.
01
Multi-Chain Simulation Engine
Accurately simulate transactions before they are signed across 15+ EVM and non-EVM chains, including Ethereum, Arbitrum, and Solana. Our engine accounts for gas, slippage, and state changes to provide a reliable preview.
15+
Supported Chains
< 200ms
Simulation Latency
02
Security-First Risk Analysis
Automatically flag high-risk interactions like infinite approvals, honeypot tokens, and malicious contracts. Integrates with leading threat intelligence feeds to protect your users from common attack vectors.
100%
Coverage for Top 20 DEXs
Zero-Day
Threat Detection
03
Seamless SDK Integration
Drop-in React/JS SDK with TypeScript support. Get a fully functional transaction preview modal integrated into your dApp's UI in under 2 hours, with full customization of branding and user flow.
< 2 hours
Integration Time
TypeScript
First-Class Support
04
Enterprise-Grade Reliability
Built on a globally distributed node infrastructure with automatic failover. Guaranteed 99.9% uptime SLA ensures your dApp's core user journey is never interrupted by our service.
99.9%
Uptime SLA
5 Regions
Global Coverage
05
Comprehensive Fee Breakdown
Provide users with a crystal-clear, line-item preview of network fees, protocol fees, and gas costs. Eliminates surprise costs and builds trust, reducing transaction abandonment by up to 40%.
Line-Item
Fee Transparency
40%
Reduced Abandonment
06
Real-Time State Awareness
Our preview dynamically updates based on live mempool data, wallet balances, and token approvals. Users see exactly what will happen at the moment of execution, not a stale estimate.
Live Mempool
Data Integration
Dynamic
Balance Checks
benefits
DELIVER MEASURABLE RESULTS
Business Outcomes for Your Product Team
Our dApp User Journey Transaction Preview service is engineered to deliver concrete business value, accelerating your product roadmap and enhancing user trust.
01
Accelerated Time-to-Market
Integrate a production-ready transaction preview in 2-3 weeks, not months. We deliver a fully tested, white-labeled module that plugs directly into your existing dApp frontend.
2-3 weeks
Integration Time
0
Protocol Changes Required
02
Drastically Reduced Support Load
Eliminate up to 70% of user support tickets related to failed transactions and unexpected fees. Clear, pre-execution previews prevent costly user errors before they happen.
~70%
Fewer Support Tickets
>95%
User Clarity Rate
03
Enhanced User Trust & Retention
Build user confidence with transparent, human-readable breakdowns of gas, slippage, and token approvals. Proven to increase successful transaction completion and user retention.
40%+
Higher Completion Rate
30%+
Better User Retention
04
Future-Proof Protocol Support
Stay ahead of protocol upgrades. Our service abstracts complexity, providing consistent previews for EVM chains, L2s (Arbitrum, Optimism, Base), and new token standards like ERC-4337.
15+
Supported Chains
24h
Update Lead Time
05
Enterprise-Grade Security & Compliance
Deploy with confidence. Our preview logic is built on audited libraries, follows security best practices, and helps your dApp meet critical regulatory transparency requirements.
100%
On-Chain Verification
SOC 2
Compliant Architecture
06
Actionable User Behavior Insights
Gain visibility into user friction points. Our analytics dashboard reveals where users abandon transactions, enabling data-driven product improvements and feature prioritization.
Real-time
Analytics Dashboard
Key Friction Points
Identified
Infrastructure Decision Matrix
Build vs. Buy: Transaction Simulation
A detailed comparison of the time, cost, and risk involved in developing a transaction simulation and preview system in-house versus using Chainscore's API.
| Key Factor | Build In-House | Chainscore API |
|---|---|---|
Development Timeline | 6-12 months | 2-4 weeks |
Initial Engineering Cost | $250K - $500K+ | $0 (integration only) |
Coverage: EVM Chains | Manual integration per chain | 20+ chains (Ethereum, Polygon, Arbitrum, Base, etc.) |
Coverage: Non-EVM Chains | Separate, complex implementation | Solana, Sui, Aptos, Stellar |
Smart Contract Support | Custom parsers for each protocol | 5,000+ pre-analyzed DeFi/NFT protocols |
Simulation Accuracy | Risk of missed edge cases |
|
Gas Estimation | Basic, chain-native RPC | Advanced ML models for precision |
Security & Auditing | Your responsibility | Continuous security monitoring & audits |
Team Required | 3-5 senior blockchain devs + DevOps | Your existing frontend/backend engineer |
Ongoing Maintenance | Full-time team (1-2 FTE) | Fully managed service, 24/7 SRE |
Time to First Preview | After core dev complete | < 1 hour with SDK |
Total Cost (Year 1) | $500K - $1M+ | Starting at $15K/year |
how-we-deliver
PROVEN PROCESS
Our Delivery Methodology
We deliver production-ready dApp user journey previews through a structured, security-first development lifecycle designed for rapid, reliable deployment.
01
Discovery & Architecture
We analyze your dApp's transaction flows and user personas to architect a preview system that mirrors your exact logic, ensuring accurate fee and state change simulation.
1-3 days
Initial Scoping
100%
Logic Coverage
02
Secure Simulation Engine
Development of a sandboxed, non-executive simulation layer using battle-tested libraries (e.g., Viem, Ethers.js) to safely preview outcomes without on-chain execution.
0
On-chain Risk
OpenZeppelin
Security Patterns
03
Integration & Custom UI
Seamless integration of the preview widget into your existing dApp frontend (React, Vue, etc.) with a customizable UI that matches your brand and user experience.
< 1 week
Integration Time
TypeScript
Primary Stack
04
Testing & Quality Assurance
Rigorous testing across multiple networks (Mainnet, Testnets) and edge cases to ensure the preview accurately reflects gas costs, slippage, and failed transaction states.
1000+
Test Cases
99.9%
Accuracy SLA
05
Deployment & Documentation
We handle the full deployment process and provide comprehensive technical documentation and API references for your team to maintain and extend the system.
2 weeks
Avg. Delivery
Full Docs
Included
06
Ongoing Support & Updates
Post-launch monitoring, support for new protocol integrations (e.g., Layer 2s, novel DeFi primitives), and updates to handle network upgrades.
24/7
Monitoring
SLA Backed
Support
dApp User Journey Transaction Preview
Typical Project Timeline & Deliverables
A clear breakdown of project phases, key outputs, and estimated timelines for implementing a custom transaction preview and simulation service.
| Phase | Key Deliverables | Timeline | Client Involvement |
|---|---|---|---|
Discovery & Scoping | Technical requirements document, API specification, success metrics | 1-2 weeks | High (Kickoff, review) |
Architecture Design | System design document, data flow diagrams, security audit plan | 1 week | Medium (Approval) |
Core Engine Development | Transaction simulation engine, gas estimation module, preview UI components | 3-4 weeks | Low (Bi-weekly syncs) |
Integration & Testing | Integration with your dApp, end-to-end testing suite, staging deployment | 2 weeks | High (UAT, feedback) |
Security Audit & Deployment | Third-party audit report, mainnet deployment, monitoring dashboard | 1-2 weeks | Medium (Final sign-off) |
Post-Launch Support | 30-day bug-fix warranty, performance analytics report, documentation | Ongoing | Low (As needed) |
dApp User Journey Transaction Preview
Frequently Asked Questions
Get clear answers on how our transaction preview service integrates, secures, and accelerates your dApp's user experience.
It's a front-end component that shows users a detailed, human-readable breakdown of a transaction before they sign. It simulates the transaction's outcome, displaying token amounts, fees, slippage, and resulting balances. This eliminates surprises, reduces failed transactions, and builds user trust by providing full transparency into the smart contract interaction.
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