Cryptocurrency · head-to-head
Blockchain.com vs CoinGecko
Blockchain.com's free Explorer API returns JSON data for Bitcoin blocks, transactions, and addresses with no signup or key, alongside a Statistics/Charts API, an Exchange Rates API, and a WebSocket feed for real-time block and mempool notifications. Browser callers can opt individual GET requests into CORS by appending a cors=true parameter; this read-only data API is a separate product from Blockchain.com's API-key-gated Exchange trading API.
CoinGecko is one of the largest independent crypto data aggregators, tracking price, market cap, volume, and metadata for 17,000+ coins across 1,000+ exchanges without requiring registration for its free public endpoint. A Demo API key unlocks slightly higher limits, while paid Pro plans add exchange order-book data, NFT floor prices, and on-chain DEX data through the same JSON interface.
| Blockchain.com | CoinGecko | |
|---|---|---|
| Authentication | None | None |
| Pricing | free | freemium |
| Formats | JSON, WebSocket | JSON |
| CORS | yes | yes |
| HTTPS | Yes | Yes |
Blockchain.com supports 2 response formats, while CoinGecko offers fewer — pick Blockchain.com for more integration flexibility.