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Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
LABS
Services

Air-Gapped Key Signing Solutions

Chainscore designs and builds custom air-gapped signing devices and protocols for institutional crypto custody. We deliver hardware and software where private keys are generated, stored, and used entirely offline.
Chainscore © 2026
overview
CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built for your specific business logic.

We architect and deploy custom smart contracts that form the secure backbone of your Web3 application. Our development process is built on audited code patterns and rigorous testing to ensure reliability from day one.

We deliver contracts that are secure by design, not as an afterthought.

Our development stack ensures robustness:

  • Solidity 0.8+ with OpenZeppelin libraries for battle-tested security.
  • Gas optimization strategies to minimize user transaction costs.
  • Comprehensive testing suites using Hardhat and Foundry for full coverage.
  • Formal verification and third-party audit preparation for high-value assets.

Typical deliverables include:

  • Token Contracts: Custom ERC-20, ERC-721, or ERC-1155 implementations with tailored minting, burning, and governance logic.
  • DeFi Primitives: Lending pools, automated market makers (AMMs), staking, and yield farming mechanisms.
  • Utility & Governance: Access control, multi-signature wallets, DAO frameworks, and custom business logic automation.
  • Full documentation and a deployment package ready for mainnet launch.
key-features-cards
ENTERPRISE-GRADE SECURITY

Core Capabilities of Our Air-Gapped Key Signing Solutions

Our hardware-based, physically isolated systems provide the highest level of security for managing private keys, ensuring your digital assets and transaction signing processes are protected from remote threats.

01

Hardware Security Module (HSM) Integration

Deploy with certified HSMs from FIPS 140-2 Level 3 vendors like Thales or YubiKey. We manage the full integration lifecycle, from provisioning to secure key generation, ensuring your signing keys never exist in software or networked environments.

FIPS 140-2 L3
Certification
Zero
Network Exposure
02

Multi-Party Computation (MPC) Orchestration

Implement threshold signature schemes (TSS) to eliminate single points of failure. We configure and manage the secure enclaves for distributed key shards, enabling transaction signing without ever reconstructing the full private key.

2-of-3+
Threshold Schemes
GG18/20
Protocol Support
03

Physical Transaction Signing Workflow

We design and implement secure, auditable processes for transaction proposal generation, air-gapped transfer via QR codes/USB, and final signature injection. Includes tamper-evident logging and dual-control procedures.

100%
Audit Trail
Dual-Control
Mandatory
04

Comprehensive Audit & Compliance Setup

Deliver a system ready for SOC 2 Type II and ISO 27001 audits. We provide detailed policy templates, access logs, key lifecycle management reports, and evidence packages for regulatory and internal compliance reviews.

SOC 2 / ISO27k
Framework Ready
Full
Lifecycle Logging
05

Custom Integration & API Development

Build secure, versioned APIs for your backend services to initiate signing requests. We handle the complexity of interfacing with air-gapped hardware, providing a simple JSON interface for your engineering team.

REST/GraphQL
API Types
< 4 weeks
Integration Time
06

Disaster Recovery & Geographic Redundancy

Design and deploy redundant signing facilities in separate geographic locations. We ensure business continuity with failover procedures and secure, encrypted backups of key shards, all managed under strict physical security protocols.

99.95%
Availability SLA
Multi-Region
Deployment
benefits
ENTERPRISE-GRADE SECURITY

Business Outcomes for Your Organization

Our air-gapped key signing solutions deliver measurable security and operational improvements, enabling you to scale your Web3 operations with confidence.

01

Eliminate Hot Wallet Risk

Move all high-value transaction signing to a physically isolated, air-gapped environment. This removes the single largest attack vector for digital asset theft, protecting treasury and user funds.

0
Online Attack Surface
100%
Offline Signing
02

Achieve Regulatory & Audit Compliance

Implement a clear separation of duties and multi-party authorization (MPC) workflows. Our solutions provide the immutable audit trails and procedural controls required by financial regulators and internal auditors.

SOC 2
Framework Ready
Granular
Audit Logs
03

Accelerate Secure Product Launches

Deploy a production-ready, compliant custody foundation in weeks, not months. Our battle-tested architecture and integration libraries let your engineering team focus on core product features, not security plumbing.

< 4 weeks
To Production
24/7
Expert Support
04

Future-Proof Your Infrastructure

Our protocol-agnostic signing engine supports Ethereum, Solana, Cosmos, and other major L1/L2 networks. Scale to new chains and signing schemes without rebuilding your core security model.

15+
Blockchains Supported
One
Unified API
05

Reduce Operational Overhead & Cost

Replace manual, error-prone processes with automated, policy-driven signing queues. Dramatically reduce the time and specialized expertise required for secure treasury management and transaction execution.

90%
Faster Approvals
Eliminated
Manual Errors
06

Gain Institutional & Partner Trust

Demonstrate enterprise-grade security practices to investors, banking partners, and large enterprise clients. Our solutions are built to the standards demanded by institutional capital allocators.

Enterprise
SLAs
Insurance
Compatible
Choose Your Implementation Path

Phased Development Tiers

A structured approach to deploying air-gapped signing, from secure foundations to institutional-grade custody.

Feature / CapabilityFoundationAdvancedInstitutional

Multi-Party Computation (MPC) Setup

Hardware Security Module (HSM) Integration

Custom Signing Policy Engine

Basic

Advanced

Fully Custom

Supported Chains

EVM (3)

EVM + Cosmos (5+)

All Major (10+)

Transaction Throughput

100 TPS

1,000 TPS

10,000+ TPS

Developer SDK & API

Smart Contract Audit (by 3rd Party)

Penetration Testing

Deployment & Integration Support

Guided

Dedicated

White-Glove

SLA & Incident Response

Business Hours

24/7 (<12h)

24/7 (<1h)

Compliance Attestation (SOC 2)

Typical Timeline

4-6 weeks

8-12 weeks

12-16 weeks

Typical Investment

$50K - $100K

$150K - $300K

Custom Quote

how-we-deliver
PROVEN METHODOLOGY

Our Development and Audit Process

From initial design to production deployment, our structured process ensures your air-gapped signing solution is secure, compliant, and ready to scale. We deliver battle-tested infrastructure, not just code.

01

Architecture & Threat Modeling

We begin with a collaborative design session to map your specific threat model, defining clear security boundaries and failure modes. This phase establishes the hardware, network, and protocol specifications for your air-gapped environment.

OWASP Top 10
Framework
1-2 weeks
Design Phase
02

Secure Development

Implementation follows strict secure coding standards (MISRA C, CERT C) for HSMs and signing devices. We use formal verification for critical cryptographic operations and implement comprehensive unit/integration testing.

Zero Trust
Principle
100%
Code Coverage Target
04

Penetration Testing & Red Teaming

Our internal security team performs adversarial testing, simulating physical and network-based attacks on the deployed system. This validates the air-gap integrity and the effectiveness of procedural controls.

Physical & Digital
Attack Vectors
FIPS 140-3
Compliance Focus
05

Deployment & Key Ceremony

We manage the secure provisioning of hardware, oversee the multi-party key generation ceremony, and establish operational runbooks for your team. Includes disaster recovery and incident response planning.

MPC/TSS
Supported
Turnkey
Provisioning
06

Ongoing Monitoring & Support

Post-deployment, we offer 24/7 security monitoring, regular compliance attestations, and firmware update management. Includes SLA-backed support with defined response times for critical issues.

99.95%
Uptime SLA
< 15 min
Critical Response
Air-Gapped Signing Solutions

Frequently Asked Questions

Get clear answers on how our offline key management solutions secure your digital assets and integrate with your operations.

An air-gapped signing solution is a hardware-based system that generates and stores cryptographic keys completely offline, physically isolated from internet-connected devices. You need one to eliminate the risk of remote hacking, phishing, and malware attacks that target online wallets and hot keys. Our solutions are essential for securing high-value assets, managing multi-signature protocols, and ensuring regulatory compliance for institutional custody.

ENQUIRY

Get In Touch
today.

Our experts will offer a free quote and a 30min call to discuss your project.

NDA Protected
24h Response
Directly to Engineering Team
10+
Protocols Shipped
$20M+
TVL Overall
NDA Protected Directly to Engineering Team
Air-Gapped Key Signing Solutions | Chainscore Labs | ChainScore Guides