ChainCheckAPI Introduction

A REST API for validating cryptocurrency addresses across 100+ blockchain networks.

Base URL: https://api.chaincheckapi.com

Quick Start

# Validate an Ethereum address (no authentication required)
curl -X POST https://api.chaincheckapi.com/v1/validate \
  -H "Content-Type: application/json" \
  -d '{"chain": "ETH", "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"}'

Response:

{
  "chain": "ETH",
  "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
  "valid": true,
  "usage_left": "Limited by IP (30/hr)"
}

Rate Limits

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