Built for Developers, by Developers.
We make crypto validation boring so you can build exciting products.
The Problem
In the world of Web3, validating wallet addresses is a surprisingly complex friction point. Every chain has its own regex standards, checksums, and formatting rules. Developers often waste hours writing custom validation logic or maintaining bloated libraries just to check if an address is valid.
The Solution
ChainCheckAPI was born from a simple idea: Validation should be a utility, not a project.
We built a lightweight, unified API layer that standardizes address validation across 100+ blockchain networks. Whether you are building a crypto exchange, a wallet, or a simple dApp, we provide sub-millisecond validation responses so you can focus on your core product logic.
Our Principles
Speed is a Feature
We obsess over latency. Our validation logic is localized and heavily cached to ensure your API calls never slow down your user experience.
Simplicity First
No complex SDKs required. A simple curl request is all you need to get started.
Transparency
We believe in fair pricing and clear documentation. No hidden limits, no surprise bills.