We architect and deploy production-grade smart contracts that are secure by design. Every contract undergoes rigorous audits and formal verification before deployment to mainnet, ensuring your protocol's integrity and user funds are protected.
LABS
Services
Historical Contract Query Engine Development
We build custom, high-performance indexing and query APIs for archived smart contract data, enabling your team to perform complex historical analysis at scale.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, audited smart contracts that power your Web3 product's core logic.
Deliver a secure, functional MVP in as little as 2 weeks with our battle-tested development framework.
Our full-service development includes:
- Custom logic for
ERC-20,ERC-721,ERC-1155, and bespoke token standards. - Gas-optimized code reducing transaction costs by up to 40%.
- Upgradeability patterns using transparent proxies for seamless future improvements.
- Comprehensive testing with 95%+ coverage and integration into CI/CD pipelines.
We build for the long term. Our contracts include monitoring and incident response tooling, with post-deployment support for managing upgrades and responding to emergent threats.
key-features-cards
ARCHITECTURE
Engineered for Performance at Scale
Our Historical Contract Query Engine is built from the ground up for enterprise-grade reliability and speed, ensuring your applications have instant, accurate access to on-chain history.
01
Sub-Second Query Latency
Access historical transaction data, event logs, and state changes with query response times under 1 second, even for complex multi-chain analysis.
< 1 sec
P95 Query Latency
100%
Data Consistency
02
Multi-Chain & Protocol Support
Unified query interface for Ethereum, Polygon, Arbitrum, Base, and other major EVM chains. Supports standard RPC calls and custom historical endpoints.
15+
Supported Chains
ERC-20/721/1155
Protocols
03
Enterprise-Grade Uptime
Fully managed infrastructure with automated failover, geo-redundant nodes, and 24/7 monitoring. We guarantee the data availability your business depends on.
99.9%
Uptime SLA
< 5 min
Recovery Time
04
Cost-Optimized Data Storage
Intelligent indexing and compression reduce storage costs by over 70% compared to raw archival nodes, without sacrificing query performance or data integrity.
70%
Storage Cost Reduction
PB Scale
Data Capacity
benefits
THE QUERY ENGINE ADVANTAGE
Drive Decisions with Granular Historical Insights
Our Historical Contract Query Engine provides the deep, structured data layer your team needs to build confidently. Move beyond basic explorers and generic APIs to a purpose-built system for analyzing on-chain history.
01
Full Transaction Lifecycle Analysis
Reconstruct the complete history of any smart contract, from deployment to the latest interaction. We deliver indexed data on every function call, internal transaction, and state change, enabling forensic debugging and compliance reporting.
100%
Event Coverage
Sub-second
Query Latency
02
Multi-Chain & Protocol-Specific Indexing
Query historical data across EVM chains (Ethereum, Polygon, Arbitrum) with native support for protocol semantics like Uniswap V3 ticks, Aave health factors, or Compound governance proposals. We build custom indexers for your specific stack.
10+
Supported Chains
Custom
Protocol Schemas
03
Time-Travel Debugging & Simulation
Replay any contract's state at a specific block height or before/after a critical event. Our engine enables "what-if" analysis and simulation of historical transactions to identify root causes of bugs or exploits.
Any Block
State Reconstruction
< 5 min
Simulation Setup
04
Compliance-Ready Audit Trails
Generate immutable, verifiable logs of all contract activity for regulatory and internal audit requirements. Our system provides timestamped, tamper-evident records aligned with financial reporting standards.
FATF Travel Rule
Compliance Ready
Immutable
Data Integrity
05
Real-Time Alerting on Historical Patterns
Set up monitors that trigger alerts based on historical behavior deviations, such as unusual withdrawal patterns, governance proposal anomalies, or liquidity pool imbalances. We deliver actionable intelligence, not just raw data.
< 1 sec
Alert Detection
Webhook/Slack
Integration
06
Scalable Data Architecture
Built on columnar storage and optimized query engines (Apache Druid, ClickHouse) to handle petabyte-scale historical data without performance degradation. We guarantee query performance SLAs as your data volume grows.
PB-scale
Data Capacity
99.9%
Query SLA
Choose Your Implementation Tier
Structured Development Path to Production
A clear comparison of our Historical Contract Query Engine development packages, from initial deployment to enterprise-grade operations.
| Capability | Starter | Professional | Enterprise |
|---|---|---|---|
Custom Query Engine Development | |||
Multi-Chain Data Indexing (EVM) | 2 Chains | 5 Chains | Unlimited |
Historical Data Depth | 6 Months | 2 Years | Full History |
Query API & SDK | Basic REST | REST + WebSocket | REST + WebSocket + GraphQL |
Smart Contract Event Parsing | Standard Events | Custom + Standard Events | Custom + Standard + Internal Txns |
Performance SLA (P99 Latency) | < 5s | < 1s | < 200ms |
Dedicated Infrastructure | |||
Initial Security Audit | |||
Ongoing Monitoring & Alerts | 7-day Logs | 30-day Metrics + Alerts | Real-time Dashboard + PagerDuty |
Developer Support | Email (Business Hours) | Slack Channel (12h) | Dedicated Engineer (4h SLA) |
Implementation Timeline | 4-6 Weeks | 6-8 Weeks | 8-12 Weeks |
Starting Price | $25,000 | $75,000 | Custom Quote |
how-we-deliver
PROVEN PROCESS
Our Development Methodology
Our systematic approach to building historical contract query engines ensures robust, scalable, and secure infrastructure from day one. We focus on delivering production-ready systems that accelerate your time-to-market and reduce technical debt.
01
Architecture & Design
We design modular, multi-chain architectures using battle-tested patterns. Our systems support EVM, Solana, and Cosmos chains with a unified GraphQL/REST API layer for seamless integration.
10+
Supported Chains
< 2ms
P99 Latency
02
Data Ingestion & Indexing
We implement high-throughput ingestion pipelines using Apache Kafka and Apache Pinot to process millions of events per second. Our indexing logic is custom-built for your specific contract events and state queries.
1M+
TPS Capacity
100%
Data Integrity
03
Query Engine Development
We build performant query engines with optimized caching (Redis), complex filtering, and real-time subscription capabilities via WebSockets. Supports historical lookups and real-time event streams.
< 100ms
Query Response
99.9%
Uptime SLA
04
Security & Auditing
Every component undergoes rigorous security review. We implement role-based access control (RBAC), data encryption at rest and in transit, and comprehensive audit logging compliant with SOC 2 Type II standards.
24/7
Security Monitoring
SOC 2
Compliance
05
Deployment & Scaling
We deploy on your preferred cloud (AWS, GCP, Azure) using Kubernetes for orchestration. Our infrastructure is auto-scaling, includes comprehensive monitoring (Prometheus, Grafana), and disaster recovery plans.
< 2 weeks
Production Ready
Zero-downtime
Updates
06
Ongoing Support
We provide 24/7 technical support, performance optimization, and feature enhancements. Includes regular health reports, cost optimization reviews, and updates for new chain integrations.
24/7
Support SLA
< 15 min
Response Time
Historical Contract Query Engine
Frequently Asked Questions
Get clear answers about our development process, timelines, and support for building your custom on-chain data engine.
A Historical Contract Query Engine is a specialized backend service that indexes, stores, and provides fast, complex queries on historical blockchain data (events, state changes, transactions). You need one to power analytics dashboards, compliance reporting, on-chain discovery features, or any application requiring efficient access to past contract states without relying on slow, rate-limited public nodes. Our engines reduce query latency from minutes to milliseconds.
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