We architect and deploy audit-ready smart contracts that form the backbone of your Web3 product. Our development process ensures security-first design, gas optimization, and comprehensive testing before mainnet deployment.
LABS
Services
Verifiable Delay Function (VDF) Oracle Implementation
We build secure, bias-resistant randomness oracles using Verifiable Delay Functions. Our implementation provides a cryptographically guaranteed time delay to prevent manipulation, ensuring fair and unpredictable outcomes for high-stakes applications.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by experts for DeFi, NFTs, and enterprise applications.
- Custom Logic: Tailored
Solidity/Rustcontracts for DeFi protocols, NFT collections, DAOs, and enterprise use cases. - Security Audits: Integration with leading audit firms and internal review using OpenZeppelin standards and formal verification tools.
- Full Lifecycle: Development, deployment, verification, and upgrade management via Transparent Proxies or Diamond Standard.
Reduce your time-to-market and technical risk with battle-tested code that has secured over $500M+ in on-chain value for our clients.
key-features-cards
ENTERPRISE-GRADE RELIABILITY
Core Features of Our VDF Oracle Implementation
Our VDF Oracle service delivers provably secure, low-latency randomness for your Web3 applications. We handle the cryptographic complexity so you can focus on building.
01
Cryptographically Verifiable Randomness
Deliver on-chain randomness with a mathematical proof of delay, eliminating trust assumptions and preventing manipulation by any single party. Essential for fair lotteries, NFT minting, and protocol governance.
256-bit
Security
Unpredictable
Output
02
Sub-Second On-Chain Finality
Achieve randomness finality in under 1 second post-request. Our optimized VDF computation and efficient proof batching ensure your dApps remain responsive and user-friendly.
< 1 sec
Finality
24/7
Availability
03
Gas-Optimized Proof Verification
Minimize operational costs with our highly optimized Solidity verifiers. We reduce on-chain gas consumption by up to 40% compared to reference implementations, saving you on transaction fees.
~40%
Gas Savings
EVM / L2s
Compatible
04
Multi-Chain & L2 Native Support
Deploy the same trusted randomness source across Ethereum, Arbitrum, Optimism, Polygon, and other EVM-compatible chains. We manage the cross-chain infrastructure complexity.
10+
Networks
Unified API
Access
05
Formally Verified Security
Our VDF circuits and smart contracts undergo rigorous formal verification and third-party audits (e.g., Trail of Bits) to ensure correctness and protect against cryptographic vulnerabilities.
Audited
Code
Formal Proofs
Cryptography
06
Managed High-Availability Infrastructure
We operate a globally distributed, fault-tolerant network of compute nodes with 99.9% uptime SLA. Automatic failover and monitoring ensure your application never misses a randomness request.
99.9%
Uptime SLA
Geo-Redundant
Infrastructure
benefits
FROM FEATURE TO IMPACT
Business Outcomes: Why a Secure RNG is Critical
A Verifiable Delay Function (VDF) Oracle isn't just a technical component; it's a foundational business asset. Here's how a secure, on-chain random number generator drives tangible results for your protocol.
01
Provably Fair & Transparent Games
Eliminate player distrust with randomness that is publicly verifiable on-chain. Our VDF Oracle ensures every game outcome is tamper-proof, provably fair, and auditable by anyone, building long-term user confidence and engagement.
100%
On-Chain Verifiability
0
Trusted Third Parties
02
Secure & Unpredictable NFT Drops
Prevent front-running and bot exploitation during high-value NFT launches. Our VDF generates the final random seed only after a verifiable time delay, making mint order and rarity distribution impossible to predict or manipulate.
100%
Unpredictable Output
Immune
To MEV Bots
03
Robust On-Chain Governance
Ensure the integrity of DAO proposals, committee selections, and treasury grants. A secure RNG prevents collusion in voting lotteries and random sampling, upholding the decentralized and fair principles of your governance model.
Collusion-Proof
Sampling
Tamper-Evident
Audit Trail
04
Regulatory & Audit Readiness
Meet compliance requirements for fairness in gaming and financial applications. Our VDF implementation provides a cryptographically secure audit trail, simplifying due diligence for partners, auditors, and regulatory bodies.
Formally Verified
Core Logic
Complete
Audit Trail
05
Eliminate Centralized Failure Points
Replace vulnerable API-based RNG services with a decentralized, blockchain-native solution. Remove single points of failure and reliance on external providers, significantly boosting your protocol's resilience and uptime.
Decentralized
Architecture
99.9%
Target Uptime SLA
06
Future-Proof Scalability
Designed for high-throughput environments like Layer 2s and app-chains. Our gas-optimized VDF Oracle contracts ensure low-cost, reliable randomness that scales with your user base without compromising security or verifiability.
< $0.01
Avg. Gas Cost
Sub-Second
Finality After Delay
use-cases
SECURE, PROVABLE RANDOMNESS
VDF Oracle Implementation Services
Chainscore delivers production-ready Verifiable Delay Function (VDF) oracles that provide cryptographically secure, bias-resistant randomness for your Web3 applications. We handle the complex infrastructure so you can focus on building.
01
Custom VDF Circuit Design
We design and implement VDF circuits (e.g., Wesolowski, Pietrzak) tailored to your protocol's latency and security requirements, ensuring provable delay and unpredictable output.
Sub-Second
Finality
> 2^128
Security Bits
02
Decentralized Prover Networks
Deploy and manage a fault-tolerant network of VDF provers to eliminate single points of failure and guarantee continuous, censorship-resistant randomness generation.
99.9%
Uptime SLA
Geo-Redundant
Architecture
03
On-Chain Verifier Contracts
Gas-optimized Solidity verifiers that efficiently validate VDF proofs on-chain, minimizing gas costs for dApps consuming the randomness on Ethereum, Polygon, or other EVM chains.
< 200k
Avg. Gas
OpenZeppelin
Standards
05
Integration & API Layer
Simple REST and WebSocket APIs for easy integration, plus client SDKs for major languages, getting your application live with verifiable randomness in days, not months.
< 2 Weeks
Integration
TypeScript/Python
SDKs
06
Security Audits & Monitoring
End-to-end security review of the VDF implementation, prover network, and verifier contracts, complemented by 24/7 monitoring and alerting for anomalous activity.
Third-Party
Audits
24/7
Monitoring
Technical Comparison
VDF Oracle vs. Alternative Randomness Sources
A detailed comparison of verifiable delay functions against other common on-chain randomness solutions, highlighting security, performance, and cost trade-offs.
| Feature / Source | VDF Oracle (Chainscore) | Chainlink VRF | RANDAO / Commit-Reveal | Block Hash |
|---|---|---|---|---|
Verifiable Randomness | ||||
Unpredictability (Prevention) | High (Time-Lock) | High (Off-chain) | Low (On-chain) | None (Predictable) |
Liveness / Censorship Resistance | High (On-chain) | Medium (Oracle-dependent) | High (On-chain) | High (On-chain) |
Latency to On-chain Result | ~1-2 minutes (configurable) | ~2-5 blocks | ~2 rounds (multiple blocks) | 1 block |
Gas Cost per Request | Medium | High (Oracle fee + gas) | Low | Very Low |
Security Model | Cryptographic (Time-lock puzzle) | Cryptoeconomic (Oracle staking) | Game-theoretic (Penalties) | None (Trivial to manipulate) |
Suitable For | High-stakes lotteries, Gaming, Leaderless protocols | NFT minting, General gaming | Simple, low-value applications | Testing / Non-critical use only |
Implementation & Maintenance | Managed Service (Chainscore) | Managed Service (Chainlink) | In-house development | Native to EVM |
Typical Setup Cost | $15K - $50K+ (custom) | Pay-per-use + subscription | $10K - $30K (dev cost) | $0 (built-in) |
Long-term Reliability | High (Deterministic, no external dependencies) | High (Decentralized oracle network) | Medium (Vulnerable to specific attacks) | Low |
Choose Your Integration Path
VDF Oracle Implementation Tiers
A comparison of our structured implementation packages for integrating a secure, high-performance Verifiable Delay Function (VDF) oracle into your protocol.
| Core Deliverables | Starter | Professional | Enterprise |
|---|---|---|---|
Custom VDF Circuit Design & Audit | |||
On-Chain Verifier Smart Contracts | Basic (EVM) | Multi-Chain (EVM + SVM) | Custom (Any EVM/SVM/L2) |
Off-Chain Prover Node Deployment | Single Region | Multi-Region HA | Geo-Distributed Cluster |
Integration Support & SDK | Documentation Only | Direct Engineering Support | Dedicated Integration Engineer |
Latency SLA (Proof Generation) | < 5 seconds | < 2 seconds | < 1 second |
Uptime & Reliability SLA | 99.5% | 99.9% | 99.99% |
Monitoring & Alerting | Basic Dashboard | Advanced Metrics + Alerts | Custom Dashboards & PagerDuty |
Incident Response Time | Business Hours | 24/7 < 2 Hours | 24/7 < 30 Minutes |
Ongoing Maintenance & Updates | Self-Service | Included for 12 Months | Fully Managed Service |
Estimated Implementation Timeline | 4-6 Weeks | 6-8 Weeks | 8-12 Weeks |
Starting Price | $25,000 | $75,000 | Custom Quote |
Implementation & Support
Frequently Asked Questions on VDF Oracles
Get clear answers on our Verifiable Delay Function Oracle development process, security, and support. Based on delivering 20+ high-assurance oracle systems.
A standard VDF Oracle deployment for a single chain takes 2-3 weeks from specification to mainnet launch. Complex multi-chain or custom proving system integrations can extend to 4-6 weeks. This includes design, development, security review, and deployment coordination.
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