About Us

DoubleJ Blocks leverages cutting-edge blockchain technology
to help anyone connect safely, easily, and FOR FREE
with cryptocurrency networks through our API services.

Transparent Architecture

Security-first design that never stores private keys on servers

Trusted Partner

Collaboration and technical support with businesses worldwide

Developer-Friendly

Fast integration, clear documentation, and rapid support

Connect major blockchain networks including Ethereum, Solana, TRON, BNB, and ADA securely through our unified platform API service.

We prioritize security and trust with our no-private-key storage policy, enabling wallet creation to transaction history queries with a single API integration.

Serving fintech companies, blockchain startups, payment systems, and NFT projects, we're your technology partner providing rapid support and customized solutions for diverse businesses and developers.

Our Services

DoubleJ Blocks API provides
the following core features and capabilities.

Wallet Creation

Easily create wallets for Ethereum, Solana, TRON, BNB, ADA, and other cryptocurrencies through our API

Balance Inquiry

Real-time integration with blockchain networks to securely check wallet asset holdings

Transaction History

Fast and accurate verification of transaction records across major cryptocurrency networks

No Private Key Storage

Enhanced security by never storing private keys on servers during wallet and transaction integrations

Use Cases

Fintech services, wallet apps, NFT services, exchanges, online shopping payments, and more.
Easily add blockchain features across a variety of business platforms.

API Overview

DoubleJ Blocks supports simple and fast API integration.

RESTful API Standard

Standard HTTP/JSON format for easy use in any environment.

Clear Documentation

Detailed API specifications and sample code provided.

Fast Integration Support

Developer channels and technical inquiry support available.

Supported Features

Wallet Creation API
Balance Inquiry API
Transfer API
Transaction History API
Payment Transfer API (Coming Soon)
Network-Specific Features

API Request & Inquiry

Try DoubleJ Blocks API yourself!
Submit your API integration request through the form below,
and our team will provide prompt guidance and integration support.