We deliver audited, gas-optimized contracts on EVM and Solana that power your core business logic. Our development process ensures zero critical vulnerabilities and sub-second transaction finality.
LABS
Services
Multi-Signature Atomic Swap Escrow
Engineering secure, audited smart contracts for complex, high-value cross-chain settlements with multi-party approval and custom conditional logic.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for speed and compliance.
From tokenomics to complex DeFi logic, we translate your requirements into robust on-chain code.
- Standard & Custom Tokens:
ERC-20,ERC-721,SPL, and bespoke implementations with custom minting/burning logic. - DeFi & dApps: Automated Market Makers (AMMs), staking pools, lending protocols, and multi-signature wallets.
- Security First: Built with
OpenZeppelinstandards, followed by comprehensive unit/integration testing and third-party audit preparation. - Full Lifecycle Support: Development, deployment, verification on Etherscan/Solscan, and ongoing upgrade management via proxies.
key-features-cards
ARCHITECTURE
Engineered for Complex Settlement Logic
Our multi-signature atomic swap escrow is built on battle-tested smart contract patterns, designed to handle intricate settlement conditions with zero trust assumptions and deterministic execution.
01
Deterministic State Transitions
Every swap state—from Initiated to Settled or Refunded—is governed by immutable on-chain logic, eliminating ambiguity and ensuring predictable outcomes for all counterparties.
100%
On-Chain Verifiability
0
Ambiguous States
02
Multi-Asset & Cross-Chain Settlement
Support for native ETH, ERC-20, ERC-721, and ERC-1155 assets with cross-chain settlement via bridging oracles. Logic handles complex multi-token swaps in a single atomic transaction.
ERC-20/721/1155
Token Standards
Cross-Chain
Settlement Scope
03
Custom Dispute & Timeout Logic
Configurable dispute resolution windows and automated timeout refunds. Logic includes slashing conditions for malicious actors and automated penalty distributions.
Fully Configurable
Timeout Windows
Automated
Penalty Enforcement
04
Gas-Optimized Execution
Contracts are engineered with gas-efficient patterns, using minimal storage writes and optimized calldata to reduce transaction costs by up to 40% for complex multi-step settlements.
≤ 40%
Gas Reduction
Minimal
Storage Writes
06
Modular Upgradeability
Built with a modular architecture using proxy patterns (Transparent/UUPS) for secure, permissioned upgrades. Logic can be extended without migrating locked funds.
Proxy Patterns
Upgrade Strategy
No Fund Migration
Required
benefits
GUARANTEED RESULTS
Business Outcomes: Reduce Risk and Operational Friction
Our multi-signature atomic swap escrow service delivers measurable improvements in security, speed, and cost-efficiency, directly impacting your bottom line.
01
Eliminate Counterparty Risk
Funds are locked in a secure, audited multi-signature escrow contract. The swap executes atomically—both assets transfer simultaneously or the transaction reverts, removing the risk of one party defaulting.
100%
Funds Protected
0
Successful Exploits
02
Accelerate Settlement Time
Replace OTC desk delays and manual reconciliation with automated, on-chain settlement. Transactions finalize in minutes, not days, freeing up capital and operational bandwidth.
< 5 min
Average Settlement
24/7
Automation
03
Reduce Operational Overhead
Automate the entire escrow and swap lifecycle—from initiation to final settlement—eliminating manual processes, intermediary fees, and administrative errors.
90%
Process Automation
$0
Intermediary Fees
04
Ensure Regulatory & Audit Compliance
Every transaction is immutably recorded on-chain with transparent multi-signature authorization logs, providing a clear, tamper-proof audit trail for internal and regulatory review.
100%
Transaction Traceability
Immutable
Audit Logs
05
Future-Proof with Cross-Chain Capability
Our architecture is built for a multi-chain future. Seamlessly execute atomic swaps between Ethereum, Polygon, Arbitrum, and other EVM-compatible networks without bridging risk.
10+
Supported Chains
Native
Asset Security
06
Deploy with Enterprise-Grade Security
All smart contracts undergo rigorous audits by firms like Trail of Bits and CertiK, and are built with OpenZeppelin standards. Includes 24/7 monitoring and incident response.
Zero Critical
Audit Findings
Enterprise SLA
Support
Architecture Comparison
Custom Multi-Signature Escrow vs. Standard HTLCs & CEXs
A technical breakdown of how our custom-built multi-signature escrow service compares to standard Hashed Timelock Contracts (HTLCs) and centralized exchange (CEX) custody.
| Feature | Standard HTLC | Centralized Exchange (CEX) | Chainscore Multi-Sig Escrow |
|---|---|---|---|
Custody Model | Non-custodial (on-chain) | Fully custodial | Non-custodial (on-chain) |
Counterparty Risk | Code-based (smart contract) | High (exchange solvency) | Multi-signature governance |
Settlement Finality | Atomic (instant) | Delayed (batched withdrawals) | Atomic or Timed (configurable) |
Custom Logic Support | Limited (pre-defined hashlock) | None | Full (business rules, KYC hooks, dispute resolution) |
Deployment & Audit Time | 2-4 weeks | N/A (platform dependency) | 4-8 weeks (includes audit) |
Ongoing Operational Cost | Gas fees only | High trading/withdrawal fees | Predictable service fee + gas |
Dispute Resolution | None (timelock expiry) | Centralized support ticket | On-chain voting or designated arbitrator |
Supported Assets | Native/ERC-20 tokens | Platform-listed tokens only | Any EVM-compatible token (ERC-20, ERC-721, ERC-1155) |
Security Audit | Your responsibility | CEX's responsibility | Included (OpenZeppelin patterns, third-party audit available) |
Typical Implementation Cost | $10K - $30K+ (dev + audit) | $0 (but high operational fees) | $50K - $150K (full custom solution) |
how-we-deliver
PREDICTABLE, TRANSPARENT, AND SECURE
Our Delivery Process: From Specification to Mainnet
We deliver production-ready multi-signature atomic swap escrow systems through a structured, milestone-driven process. Each phase is designed to de-risk your project, ensure technical alignment, and guarantee a secure, on-time launch.
01
Phase 1: Discovery & Specification
We conduct a technical deep-dive to define your exact requirements, including supported blockchains (Ethereum, Solana, Polygon), token standards (ERC-20, SPL), and swap logic. This results in a detailed technical specification document that serves as our single source of truth.
2-5 days
To Final Spec
100%
Requirement Clarity
02
Phase 2: Architecture & Smart Contract Development
Our senior Solidity/Rust engineers build your custom escrow contracts using battle-tested patterns from OpenZeppelin and Anchor. We implement the multi-signature logic, time-locks, and atomic swap verification to ensure funds are secure and transactions are trustless.
2-3 weeks
Development Time
Gas-Optimized
Code Quality
03
Phase 3: Security Audit & Testing
Every line of code undergoes rigorous internal review and automated testing (unit, integration, fuzz). We then engage with a top-tier third-party auditor (e.g., Spearbit, OtterSec) for a formal security assessment, providing you with a verifiable audit report.
Certified
External Audit
> 95%
Test Coverage
04
Phase 4: Frontend Integration & Staging
We provide a React/TypeScript SDK and integration guide for your team to connect your UI to the escrow contracts. We deploy the entire system to a testnet/staging environment (Sepolia, Devnet) for your team to conduct end-to-end user acceptance testing.
Fully Documented
SDK & API
1 week
Integration Support
05
Phase 5: Mainnet Deployment & Monitoring
We manage the secure, multi-signature deployment of the factory and master contracts to mainnet (Ethereum, Solana Mainnet-Beta). We set up real-time monitoring and alerting for contract events, transaction failures, and security anomalies.
SLA Backed
99.9% Uptime
24/7
Incident Monitoring
06
Phase 6: Ongoing Support & Upgrades
Your success continues post-launch. We offer retainer-based support for bug fixes, minor enhancements, and protocol upgrades. We stay on-call to ensure your swap infrastructure scales with your business volume.
< 1 hour
Critical Response
Proactive
Health Checks
security
CORE SERVICE
Smart Contract Development
Secure, audited smart contracts built for production from day one.
We architect and deploy production-ready smart contracts on EVM and Solana. Our process ensures security, gas efficiency, and upgradability from the start.
- End-to-End Development: From specification and
Solidity/Rustcoding to deployment and verification. - Security-First: Built with
OpenZeppelinstandards and hardened through internal audits before third-party review. - Upgradeable Patterns: Implementation of
UUPSorTransparent Proxypatterns for seamless future upgrades.
We deliver contracts you can deploy with confidence, backed by formal verification and battle-tested patterns.
Our deliverables include comprehensive documentation, deployment scripts, and a security audit report. Typical projects move from concept to testnet in 2-3 weeks.
Multi-Signature Atomic Swap Escrow
Frequently Asked Questions
Get clear answers to common technical and business questions about our custom escrow development service.
A standard multi-signature atomic swap escrow contract with 2-3 signers and basic dispute logic is typically delivered in 2-3 weeks. Complex systems with custom adjudication logic, multi-chain support, or integration with existing dApps can take 4-6 weeks. We provide a detailed project plan with milestones after the initial scoping call.
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