Development of crypto exchanges, swap platforms and turnkey OTC solutions

You are planning to launch your own crypto exchange or swap service. CryptonisLabs implements solutions such as full-fledged financial systems — with a well-thought-out architecture, stable integrations, and readiness for scaling.

We develop OTC platforms for individual transactions and automated B2C swap services with API integration with leading exchanges and payment providers, including Binance, WhiteBIT, Cryptomus, CoinPayments, and others. Exchange operations can be implemented in the web interface, via API, or in the Telegram exchange format for instant interaction with users.

For partners, franchises, and products focused on quick-to-market, we offer white-label and brand-ready solutions that allow you to launch exchange services under your own brand without restrictions on functionality or further development.

As a result, you get a controlled, technologically mature exchange service adapted to your business processes and security requirements.

What is a crypto exchange and why is it a key element of crypto infrastructure?

A crypto exchange is a service for performing cryptocurrency and fiat asset exchange operations at a predetermined rate, fixed or dynamic.
Unlike centralized exchanges (CEX), exchangers do not use trading engines, order books, or market-making mechanics. This simplifies the logic of trade execution, reduces transaction times, and reduces operational risks.

Exchange services operate either on the basis of their own liquidity pool or through integration with APIs of third-party exchanges and liquidity providers, including Binance, WhiteBIT, KuCoin, and OKX. This approach ensures predictable transaction execution and stable operation of the service without complex exchange infrastructure.

Thanks to this architecture, crypto exchanges have become a basic tool for fintech platforms, crypto payment services, startups, and businesses that value launch speed, control of operations, and a clear user experience.

Main types of crypto exchanges

We design and implement exchange systems with different operating models, depending on business logic, volumes, and automation requirements.

• OTC exchanger with manual processing

The user creates an application, which is confirmed by the operator. This model is suitable for small projects, local exchange points, and scenarios with individual terms of agreements.

• Automated exchange via API

The exchange is carried out without the participation of an operator using the API of leading exchanges, including Binance, WhiteBIT and KuCoin. Rates are updated in real time, and transactions are performed automatically. The format is optimal for B2C services and online platforms.

• Swap platform with its own liquidity pool

Exchanges occur within the system with instant execution of transactions. Rates are formed automatically or using external liquidity sources. This approach is used in large crypto services and DeFi-oriented products.

• Telegram-exchanger

Exchange operations are implemented via a Telegram bot. The format is suitable for rapid launch of MVPs, communities, crypto services, and products focused on a minimal user journey.

• Cross-platform solution (Web + Telegram + API)

An exchange with a web interface, Telegram bot, and API for partners. This architecture is suitable for projects that plan to scale and integrate exchange functionality into other products.

Key platform features

We develop complete B2C and OTC solutions with modern frontend and backend architecture. The platform is designed to simultaneously provide a simple user scenario and full operational control for the service owner.

Frontend functionality for users

The user interface is built around a clear logic of the exchange "Give / Receive" with automatic calculation of the exchange rate, fees, limits and transaction processing time. The platform supports major cryptocurrencies, including BTC, ETH, USDT, TON, BNB, TRX and SOL. Users have access to a personal account with transaction history and application statuses. Authorization is implemented through popular wallets - WalletConnect, TON Connect, MetaMask and TronLink.

The notification system informs users about completed transactions, delays or rejections of applications, ensuring transparency and control at every stage of the exchange.

How backend functionality helps service owners

The backend of an exchange platform is a key element of operations, liquidity, and risk management. It determines the stability of the service, control over financial flows, and the ability to scale the business.

The system allows you to manage rates, fees, limits, and transaction execution rules according to your chosen business model. The platform supports integration with exchange APIs, including Binance, WhiteBIT, and KuCoin, which provides access to external liquidity and current market rates.

To comply with regulatory requirements and reduce operational risks, KYC/AML modules (Sumsub, ShuftiPro) are integrated. They provide user verification, transaction control and minimization of fraudulent scenarios. Payment logic is complemented by integrations with crypto payment gateways Cryptomus, NOWPayments and CoinPayments.

Operational control and administration

Service owners and operations teams get access to an administrative panel that allows:

• view and manage applications,
• check the correctness of operations before execution,
• monitor transaction statuses in real time.

The system supports logging of all actions and events, which ensures transparency of work and simplifies auditing. If necessary, the platform can be supplemented with integration with Telegram for operational notifications and system messages.

Integrations and architectural approach

The platform supports integration with exchange APIs Binance, WhiteBIT, KuCoin and OKX, payment services Cryptomus, NOWPayments, CoinPayments and Binance Pay, as well as fiat on/off-ramp providers Transak and Mercuryo. User authorization is implemented via WalletConnect, TON Connect, MetaMask and TronLink. The solution is built on a multi-tiered architecture that ensures component isolation, stable operation under load and the possibility of gradual scaling.

The frontend is implemented using React, Next.js or Vue and provides an adaptive interface for different types of devices. The backend is implemented on Node.js, Nest.js or Laravel and is responsible for business logic, integration and request processing. A separate liquidity layer is responsible for forming rates and executing exchange transactions in real time. The platform supports both connecting to external exchanges and working with its own internal liquidity pool.

Financial transactions are processed through a separate layer of payment gateways, which allows you to separate the trading and payment logic and increase the reliability of the system. Data is stored in PostgreSQL, and Redis is used for caching and processing high-frequency queries. This configuration ensures stable operation even with a high volume of transactions.

Cryptocurrency exchange usage scenarios

The platform can be adapted to different business models and usage scenarios.

• For B2C services, an exchanger is implemented that is integrated directly into the client's site or product.
• For large-volume transactions, OTC platforms with individual conditions and full control over the execution of transactions are provided.
• The exchange module can be integrated into crypto payment systems, allowing users to exchange without leaving the main product.
• Telegram Exchange is used as an additional channel of interaction with users for quick transactions and notifications.
• White-label solutions are available for partners, merchants, and franchises, allowing them to launch exchange services under their own brand based on a ready-made technological platform without the need for development from scratch.

Security as a basic level of architecture

The security of the crypto service is built at the architecture level and covers all stages of the platform's operation - from data transmission to the execution of financial transactions.

Information transmission between clients, services, and external integrations is carried out using SSL/TLS protocols. Critical data, including private keys and account parameters, is stored with an additional layer of encryption, minimizing the risk of unauthorized access.

Access to the system is regulated through a role model and IP filtering, which allows for a clear delineation of the rights of users, operators, and administrative roles. This provides control over actions within the platform and reduces the likelihood of internal abuse.

The infrastructure is protected from typical external threats, including DDoS attacks, automated bots, and spam requests. The monitoring system detects anomalous activity and triggers automatic notifications in case of potential risks.

All operations and events are logged, which provides transparency, auditability, and rapid recovery in the event of incidents. Regular backups of logs, orders, and system states allow you to maintain data integrity even in the event of critical failures. The server infrastructure is deployed using hardening practices — service isolation, access restrictions, and configuration control — which increases the system's resilience to external and internal threats.

Examples of integrations and practical scenarios

CryptonisLabs implements exchange solutions adapted to various business scenarios and integration models with financial products.

USDT ↔ BTC Exchanger with Cryptomus API Integration

A cryptocurrency exchange service has been implemented with a direct connection to the Cryptomus payment provider. The integration ensures correct payment processing, automatic execution of operations, and stable synchronization of transaction statuses.

Swap platform with Binance Liquidity API connection

A swap solution has been developed with access to external liquidity via the Binance API. The system generates up-to-date rates in real time and ensures instant execution of exchange transactions without manual intervention.

Telegram Exchange TON ↔ USDT

A Telegram bot has been implemented to perform exchange operations without using the web interface. Users can create applications, confirm operations, and receive notifications directly in the messenger, which reduces the user journey to a minimum.

OTC panels for fiat and cryptocurrency transactions

An OTC solution has been launched to handle large volumes and customized exchange terms. The platform supports processing of fiat and cryptocurrency transactions with manual or semi-automatic execution control.

Integration of KYC/AML modules

User verification has been implemented through KYC/AML modules that are activated before financial transactions are performed. This reduces the risk of fraud and ensures compliance with regulatory requirements.

Why choose CryptonisLabs?

CryptonisLabs designs and implements cryptocurrency exchanges, OTC platforms, and swap systems as infrastructure products with high requirements for security, reliability, and scalability.

We work with architecture, liquidity and integrations at the level necessary for the stable operation of financial services. Our solutions connect to leading exchanges and payment providers, including Binance, WhiteBIT, Cryptomus and NOWPayments, and are designed to process transactions in real time without performance degradation. Within the projects, we implement our own liquidity pools, API modules, administrative panels and analytical dashboards, which provide full control over all transactions. The interfaces are available in web format and via Telegram and are designed for daily operational use.

The white-label and brand-ready approach allows you to launch exchange services under your own brand without restrictions in functionality or architecture and scale the platform along with business growth.

By choosing CryptonisLabs, you get a technologically mature solution with a well-thought-out architecture, secure API integration, and full responsibility for the implementation of a turnkey product.