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Free 30-min Web3 Consultation
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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

Institutional MPC Sub-Account Custody Development

We build secure, non-custodial custody infrastructure for fintechs and neobanks using Multi-Party Computation (MPC). Our solutions secure private keys across sub-accounts, eliminating single points of failure and providing institution-grade security.
Chainscore © 2026
overview
CORE SERVICE

Smart Contract Development

Secure, audited smart contracts built to your exact specifications.

We architect, develop, and deploy production-ready smart contracts that form the immutable logic of your Web3 application. Our process ensures security, gas efficiency, and compliance from day one.

  • Full Lifecycle Support: From initial concept and Solidity/Rust development to deployment on EVM/Solana and post-launch maintenance.
  • Security-First Approach: All code follows OpenZeppelin standards and undergoes rigorous internal audits before external review.
  • Gas Optimization: We write contracts that minimize transaction costs, a critical factor for user adoption and protocol sustainability.

We deliver battle-tested contracts that handle real value, not just proof-of-concepts.

Our team specializes in:

  • Custom Tokenomics: ERC-20, ERC-721, ERC-1155, and bespoke token models with vesting, staking, and governance modules.
  • DeFi Primitives: Automated Market Makers (AMMs), lending/borrowing pools, yield aggregators, and derivative contracts.
  • Enterprise Logic: Multi-signature wallets, asset management systems, and verifiable supply chain tracking.

Typical Deliverables & Timeline:

  • MVP in 2-4 weeks: A functional, audited core contract suite.
  • Complete technical documentation and deployment scripts.
  • Integration support for your front-end and backend teams.

We mitigate your biggest risks: security vulnerabilities, inefficient code, and regulatory missteps.

key-features-cards
ENTERPRISE-GRADE FOUNDATION

Core Architecture of Our MPC Custody Solution

Our institutional MPC custody is built on a battle-tested, modular architecture designed for security, compliance, and operational efficiency. We deliver a production-ready foundation, not just a toolkit.

01

Multi-Party Computation Engine

Proprietary MPC protocol with N-of-N and M-of-N threshold schemes for flexible governance. Eliminates single points of failure and private key exposure, ensuring assets are never at rest in a complete form.

> 100
Protocol Audits
0
Key Compromises
02

Hierarchical Deterministic (HD) Wallet Structure

Enterprise-grade BIP-32/44/85 compliant wallet architecture enabling unlimited sub-accounts under a single master seed. Each client, fund, or department gets a fully isolated, auditable wallet tree.

Unlimited
Sub-Accounts
BIP-32/44/85
Standards
03

Policy & Approval Workflow Engine

Configurable multi-signature approval policies with role-based access control (RBAC). Define transaction limits, whitelists, and quorum rules (e.g., 2-of-3 CFO/COO) for every sub-account or asset type.

Custom
Rule Sets
Real-time
Policy Enforcement
04

Audit & Compliance Layer

Immutable, granular logging of all key generation, signing sessions, and policy changes. SOC 2 Type II-ready data exports for internal audits and regulatory compliance (FINRA, SEC, MiCA).

100%
Activity Logged
SOC 2
Compliance Ready
05

Cross-Chain & Multi-Asset Support

Native support for EVM chains (Ethereum, Polygon, Arbitrum), Solana, and Bitcoin, with a unified API. Manage thousands of token standards (ERC-20, SPL, BRC-20) across all sub-accounts from one dashboard.

15+
Networks
Unified API
Interface
06

Disaster Recovery & Key Refresh

Automated, non-interactive proactive secret sharing (PSS) for secure, offline key backup. Scheduled key rotation and compromise recovery procedures without service downtime.

< 1 hour
Recovery Time
Zero Downtime
Key Rotation
benefits
DELIVERABLES & GUARANTEES

Business Outcomes for Your Fintech or Neobank

Our Institutional MPC Sub-Account Custody development delivers concrete, measurable results. We focus on the technical outcomes that directly impact your product's security, speed to market, and operational efficiency.

01

Multi-Party Computation (MPC) Custody Engine

We build a production-ready custody core using MPC protocols (GG18/GG20) with threshold signatures. This eliminates single points of failure, providing bank-grade security without a single private key ever being fully assembled.

SOC 2 Type II
Compliance Framework
Tier 1 Auditors
Security Review
02

Hierarchical Sub-Account Architecture

Deploy a flexible account structure with parent-child relationships, enabling granular permissions, departmental segregation of funds, and automated treasury management workflows for your institutional clients.

Unlimited
Sub-Accounts
Role-Based
Access Control
03

Rapid Integration & Deployment

Leverage our battle-tested SDKs and REST APIs for seamless integration with your existing banking stack. We manage the full deployment lifecycle, from testnet to mainnet.

< 4 weeks
Production Launch
99.9% SLA
API Uptime
04

Regulatory & Compliance Readiness

Our architecture is designed for audit trails, transaction monitoring, and reporting. We implement best practices for Travel Rule compliance (e.g., IVMS 101 data standards) and integrate with leading AML providers.

Full Audit Trail
Immutable Logging
IVMS 101
Data Standard
Architectural Comparison

MPC Custody vs. Traditional Custodial Models

A technical breakdown of how our institutional MPC sub-account custody development differs from conventional single-key and multi-sig custodians.

Custody FeatureTraditional Custodial (Single Key)Multi-Signature WalletsChainscore MPC Sub-Accounts

Private Key Management

Single point of failure on one device

Distributed across N-of-M signers

Distributed via cryptographic shares, never assembled

Attack Surface

High (compromise one key)

Medium (compromise threshold keys)

Low (requires compromise of multiple independent nodes)

Transaction Signing

Single signature

Multiple signatures aggregated on-chain

Single signature generated off-chain via MPC protocol

On-Chain Gas Costs

Low (one signature)

High (multiple signatures)

Low (one signature, identical to EOA)

Sub-Account Governance

Not natively supported

Complex, custom smart contract logic

Built-in hierarchical policy engine

Deployment Timeline

1-2 weeks

2-4 months (custom dev)

4-8 weeks (with our SDK)

Audit & Compliance Readiness

Basic

Requires extensive audit

Pre-audited core, compliance framework included

Estimated Annual TCO

$50K - $100K+ (insurance, ops)

$150K+ (dev, audit, maintenance)

$75K - $200K (managed service with SLA)

how-we-deliver
PROVEN METHODOLOGY

Our Development & Integration Process

A structured, security-first approach to deliver compliant, production-ready MPC custody sub-accounts. We manage the technical complexity so you can focus on your core business.

01

Architecture & Compliance Review

We analyze your existing stack and regulatory requirements to design a compliant MPC custody architecture. This includes defining key policies, transaction signing flows, and integration points with your existing KYC/AML systems.

ISO 27001
Framework
SOC 2 Type II
Compliance
02

MPC Protocol Implementation

Deployment of a secure, multi-party computation (MPC) protocol for private key generation and signing. We implement threshold signatures (TSS) with support for ECDSA/EdDSA, ensuring no single point of failure for your institution's assets.

ECDSA/EdDSA
Supported Curves
N-of-M
Threshold Schemes
03

Sub-Account & Policy Engine

Development of the core sub-account management layer. This includes programmable spending limits, multi-tier approval workflows, role-based access controls (RBAC), and real-time audit logging for all custodial actions.

Granular RBAC
Access Control
Real-time
Audit Trail
04

Secure API & SDK Integration

We provide a hardened REST API and language-specific SDKs (Node.js, Python, Go) for seamless integration into your platform. Includes comprehensive documentation, webhook support for transaction status, and developer sandbox environments.

REST & WebSocket
API Types
Node.js/Python/Go
SDK Support
EXPLORE
05

Security Audit & Penetration Testing

The entire custody stack undergoes rigorous third-party security audits and internal penetration testing before deployment. We address all critical and high-severity findings to ensure institutional-grade security.

Third-Party
Security Audits
Critical & High
Findings Resolved
06

Deployment & Ongoing Support

Managed deployment to your cloud environment (AWS, GCP, Azure) with infrastructure-as-code. We provide 24/7 monitoring, incident response, and dedicated technical support with defined SLAs for uptime and issue resolution.

99.9%
Uptime SLA
24/7
Support
Phased Implementation

Typical 8-12 Week Delivery Timeline

A structured delivery plan for deploying a secure, audited MPC sub-account custody solution, from initial design to production readiness.

Phase & DeliverablesWeeks 1-3: FoundationWeeks 4-8: Core BuildWeeks 9-12: Launch & Scale

Architecture & Smart Contract Design

Requirements workshop, system architecture, contract specs

Solidity development, internal testing, initial audit prep

Final security audit, deployment scripts, mainnet configuration

MPC Wallet & Key Management

MPC protocol selection (GG18/GG20), key generation logic

Multi-sig policy engine, transaction signing flows, backup/recovery

Integration testing with hardware HSMs, key ceremony documentation

Sub-Account & Policy Engine

Hierarchical structure design, role-based access control (RBAC)

Smart contract implementation for account creation, fund allocation

Policy simulation suite, admin dashboard for rule management

Chain Integration & APIs

Target chain analysis (EVM, L2s), RPC node setup

Deploy contracts to testnet, build REST/WebSocket APIs

Production RPC failover, API load testing, rate limiting

Security & Compliance

Threat modeling, initial security review

Formal verification (optional), penetration testing scope

Final audit report (e.g., Quantstamp, CertiK), compliance checklist

Deployment & Go-Live

Staging environment deployment, internal team training

Mainnet deployment, monitoring setup, 24/7 on-call handoff

Estimated Cost Range

$25K - $40K

$45K - $70K

$30K - $50K+ (varies by audit scope)

Expert Insights

Frequently Asked Questions on MPC Sub-Account Custody

Get clear, technical answers to the most common questions from CTOs and founders evaluating institutional-grade custody solutions.

A standard deployment for a production-ready MPC sub-account custody system takes 4-8 weeks. This includes architecture design, smart contract development, integration with our MPC nodes, security audits, and client SDK implementation. For complex multi-chain deployments or bespoke compliance features, timelines extend to 10-12 weeks. We provide a detailed project plan within the first week of engagement.

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