Consulting model with validation checkpoints
Guiding external teams without controlling their codebase required clear documentation and regular validation. Teaching takes longer but builds client capability.
CASE STUDYFINTECH · PRIVACY
We delivered audited smart contracts and an account abstraction architecture for BNXT — a Polish fintech combining messaging with blockchain payments. Users can send small amounts instantly, like tips in a chat, with full privacy. We joined in 2024 as technology consultants and smart contract developers.
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BNXT had a clear product vision. The gap between vision and execution was the entire blockchain layer.
They were building something complex: a chat app where every message could carry a payment, with wallets that don't require users to understand crypto. In fintech, especially with blockchain, mistakes aren't just bugs — they're risks to user funds.
Token contracts powering BNXT's payment system, built with established security patterns and thorough testing.
ERC-4337 + Biconomy setup enabling token transfers without gas management or crypto-native UX friction.
A clear integration path to Ari10 for converting between traditional currency and crypto.
Integration patterns, security requirements, and code review checkpoints for external mobile and backend teams.
Our role was consultant and builder. We wrote the smart contracts ourselves, then guided external teams on how to integrate them properly.
Security was the priority. We conducted threat modeling for common attack patterns, handled edge cases in token transfers, and ensured comprehensive testing with 40 internal and external testers.
The contracts passed an external security audit by Composable Security in March 2025. Internal penetration testing by experienced QA validated the broader system.
Security was the priority.
Guiding external teams without controlling their codebase required clear documentation and regular validation. Teaching takes longer but builds client capability.
Abstraction improves UX but increases the attack surface. We chose a security-first design with thorough testing of the abstraction layer.
We documented everything openly, even when it reduced future dependency on us. Trust mattered more than locking in work.
A security-audited blockchain layer ready for production launch, validated by extensive testing and clear integration guidance for partner teams.
Sound architecture and best practices upfront reduce risk and rework later — especially in fintech.
Transferring know-how to other teams can be slower than shipping alone, but it compounds long-term value.
Edge cases and attack vectors must be designed in, not patched after the fact.
Clear communication and explicit checkpoints create confidence across teams and stakeholders.
We support BNXT through production launch preparation, user onboarding strategy, and performance optimization based on real usage patterns.