ODC for Blockchain Smart Contracts
See how InApps built Vleppo's offshore development center to launch a blockchain smart contract platform, from architecture to funded Phase 2.
Turning Legal Documentation Into a Blockchain-Verified Product
Vleppo set out to modernize how legal agreements get created and executed, combining lawyer-drafted templates with blockchain-based validation, so documents like shareholder agreements or loan contracts could be issued, copied, and verified without the usual paperwork friction. As an EU-based company building a technically complex product spanning smart contracts, digital asset management, and a multi-platform desktop app, Vleppo needed an engineering partner who could move fast without sacrificing the precision blockchain development demands.
InApps embedded a dedicated ODC team directly into Vleppo's roadmap, covering architecture, blockchain engineering, and cross-platform delivery, carrying the product from a credible Phase 1 launch into ongoing Phase 2 development.
Project goals
- Build a multi-service blockchain platform: digital asset validation, exchange, and management
- Implement smart contract logic for binding digital agreements
- Ship a single desktop application compatible across macOS, Windows, and Linux
- Integrate CRM functionality to manage client and document relationships
- Support a growing catalog of legal document templates (property, shareholder, loan, asset sale, licensing)
Client requirements
Across each key area, these requirements shaped every architectural and product decision we made.
Blockchain & Smart Contract Expertise
Vleppo needed engineers fluent in blockchain protocols and Solidity to power digital asset validation and contract execution, not generalist web developers.
- Solidity smart contract architecture
- Ethereum network integration
- Digital asset validation & exchange logic
- Secure, auditable transaction flows
Cross-Platform Desktop Application
A single codebase needed to run natively across three operating systems without fragmenting development effort.
- macOS compatibility
- Windows compatibility
- Linux compatibility
- Consistent UX across all three
Legal Document Infrastructure
The platform needed to support an expanding library of lawyer-drafted templates, each blockchain-enabled for verification.
- Property project documents
- Shareholder agreements
- Loan & asset sale agreements
- License agreements
Investor-Ready Technical Delivery
Phase 1 needed to be stable and demonstrable enough to support an active fundraising conversation.
- Milestone-based delivery
- Production-stable architecture
- Technical documentation for due diligence
- Direct engineering communication
Business challenges
The core obstacles that shaped every decision we made in rebuilding this platform.
Complex Blockchain Engineering
Building secure smart contract logic for digital asset validation, exchange, and management required deep blockchain-specific expertise, well beyond typical full-stack web development.
Multi-Platform Compatibility
Delivering consistent functionality across macOS, Windows, and Linux desktop environments meant engineering overhead most teams underestimate until deep into the build.
Funding-Critical Timeline
Vleppo needed Phase 1 delivered with enough stability and polish to support an active investor funding round - leaving little margin for technical missteps.
Cross-Border Coordination
As an EU-based company working with an offshore team, Vleppo needed reliable timezone alignment and communication to keep blockchain-specific decisions moving without translation gaps.
Our solutions
Each solution addresses a specific pain point while contributing to a unified, future-proof platform, from infrastructure to mobile to AI, every layer rebuilt with scale, security, and speed in mind.
Dedicated Blockchain Engineering Team
A focused ODC team with Solidity and Ethereum experience built the digital asset validation, exchange, and smart contract layers from the ground up.
Native Multi-OS Application Build
Engineered a single application architecture deployable across macOS, Windows, and Linux without splitting the codebase into platform-specific forks.
Milestone-Driven Delivery Model
Structured Phase 1 around clear, demonstrable milestones, giving Vleppo's leadership concrete technical proof points to bring into investor conversations.
Direct Engineering Communication
Vleppo's team worked directly with InApps engineers, no PM layer in between, keeping blockchain-specific technical decisions fast and accurate across timezones.
Technology stack
Leveraging high-expertise engineering and battle-tested technologies, the InApps team delivered a scalable, production-ready solution built for long-term growth.
Ethereum, Solidity, Komodo
React
Node.js
macOS, Windows, Linux
The experts behind it
Every successful delivery starts with the right people. InApps assembled a dedicated, cross-functional team structured for speed, accountability, and long-term partnership.
Project Manager
Owns delivery timeline, phase planning, and stakeholder communication.
Solution Architect
Designed the multi-platform architecture spanning blockchain, desktop, and CRM.
Blockchain Engineers
Built the smart contract and digital-asset validation layer.
Backend Engineers
Developed the CRM integration and core service logic.
Cross-Platform Engineers
Built the Mac/Windows/Linux desktop application.
QA Engineer
Tested platform stability across blockchain transactions and desktop environments.
What we delivered
Key outcomes
- Delivered a fully functional Phase 1 platform spanning digital asset validation, exchange, and management
- Helped secure investor funding on the strength of a credible technical foundation
- Resolved complex blockchain engineering challenges without derailing the roadmap
- Shipped one application running natively across macOS, Windows, and Linux
- Built enough trust with the client to continue into Phase 2 development
Phase 1 was delivered successfully, helped the client secure investor funding, and the trust built along the way carried straight into Phase 2.
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