A Secure Bitcoin Wallet Infrastructure for Broken Money Wallet

Industry: Fintech/Blockchain

Client: Broken Money Wallet

Solution Delivered: Enterprise-grade Bitcoin wallet infrastructure

Core Capabilities: PSBT support, Coldcard hardware wallet integration, MFA authentication, secure transaction workflows

Tech Stack: Java, React JS, PostgreSQL, Axios, SCSS, HTML, Redux, Stripe, Microsoft Authentication

About Client

Broken Money Wallet is a Bitcoin-focused digital wallet platform built for organizations seeking secure and transparent digital asset management. Designed around open standards like PSBT (Partially Signed Bitcoin Transactions)and compatible with Coldcard hardware wallets, the platform prioritizes non-custodial control, transaction clarity, and institutional-grade security.

The Business Challenge

Broken Money set out to build a secure, transparent, and hardware-compatible Bitcoin wallet platform for organizations. And, it wasn’t the same as building another fintech app.

The stakes were higher:

Private key exposure could mean irreversible asset loss
Hardware wallet integration required precise transaction handling
PSBT workflows demanded protocol-level accuracy
Institutional users expected auditability and transparency
The platform needed to balance security with usability

Evidently, they needed a secure digital asset architecture partner, and they reached out to us.

What Broken Money Wallet Needed

The main challenge was designing an infrastructure that preserved decentralization principles while maintaining enterprise-grade reliability. The digital wallet platform had to:

Implement Microsoft Authentication to protect identities and user access
Support Coldcard hardware wallets via USB
Enable secure PSBT (Partially Signed Bitcoin Transactions) broadcasting
Manage users, vaults, plans, and Bitcoin transactions
Integrate with blockchain networks and Stripe
Ensure cross-browser and cross-platform compatibility
Deliver an intuitive UX for complex Bitcoin operations

Aegis Softtech’s Approach

1. Secure Wallet Architecture

Our expert Java developers built a backend infrastructure in Java with PostgreSQL to ensure:

Transaction integrity validation
Secure vault management
Robust data consistency
Scalable user and plan management

2. PSBT Workflow Implementation

PSBT compatibility required precise transaction structuring.

So, we:

Built transaction generation workflows compliant with Bitcoin standards
Enabled secure partial signing mechanisms
Validated transaction data before broadcasting to blockchain networks
Ensured uninterrupted interoperability with hardware wallets

3. Coldcard Hardware Wallet Integration

Coldcard integration introduced hardware-level transaction signing.

Here’s how we did it:

Enabled USB-based wallet communication
Built secure transaction handoff processes
Ensured private keys were never left on the hardware device
Designed verification flows so users could validate transaction details before signing

4. Multi-Layered Security Framework

To protect digital assets, we implemented:

Microsoft Authentication
Multi-Factor Authentication (MFA)
End-to-end encryption
Secure API communication
Threat-aware transaction validation logic

5. User Experience for Complex Bitcoin Operations

Security alone doesn’t drive adoption.

We designed a React-based frontend with:

Clear transaction breakdowns
Transparent fee display
Structured vault navigation
Simplified user and plan management
Responsive performance across browsers and operating systems

Purposed the solution with following technology stack

Backend: Java
Data-Base: PostgreSQL.
Fronted: React JS, HTML, SCSS, Axios, Redux, stripe payment gateway, Microsoft Authentication.

The Outcome

Broken Money successfully launched a secure, hardware-compatible Bitcoin wallet platform that:

Supports PSBT-compliant transaction broadcasting
Enables Coldcard-based hardware signing
Protects users through MFA and encrypted communication
Integrates payment processing through Stripe
Delivers a transparent and intuitive transaction experience

The platform now provides organizations with a secure alternative to conventional custodial wallet models.