Mempool.space vs Otterscan
A detailed head-to-head comparison of Mempool.space and Otterscan — pricing, features, and which one wins for different use cases.
Mempool.space
Open-source Bitcoin explorer and real-time mempool visualizer
Mempool.space is the most popular open-source Bitcoin block explorer and mempool visualizer, and it has become the default tool for understanding Bitcoin fee markets. Its signature feature is a live, …
Full review →Otterscan
Fast, self-hosted open-source explorer that runs on your own Erigon node
Otterscan is a free, open-source, self-hosted block explorer designed to run directly on top of your own Erigon (or compatible) Ethereum node, giving you an Etherscan-like experience with complete pri…
Full review →Feature Comparison
| Feature | Mempool.space | Otterscan |
|---|---|---|
| Transaction History | ✓ | ✓ |
| Contract Verification | ✗ | ✗ |
| Token Tracking | ✗ | ✓ |
| Nft Tracking | ✗ | ✗ |
| Api Access | ✓ | ✗ |
| Multi Chain Support | ✗ | ✗ |
| Gas Tracker | ✓ | ✗ |
| Source Code Viewer | ✗ | ✓ |
| Address Labels | ✗ | ✓ |
| Private Notes | ✗ | ✗ |
Mempool.space Pricing
Mempool.space
Free
Free
- ✓Open-source Bitcoin explorer
- ✓Live mempool + fee estimation
- ✓Lightning Network exploration
- ✓Mining pool statistics
- ✓Self-hostable; enterprise tier available
Otterscan Pricing
Otterscan
Free
Free
- ✓Fully open-source
- ✓Self-hosted on your Erigon node
- ✓Private, fast local lookups
- ✓Internal-tx tracing
- ✓Approval + history analysis
Verdict: Which Should You Choose?
Mempool.space is the better pick if you need best-in-class bitcoin fee estimation and mempool visualization. Otterscan wins when runs on your own node — fully private, no third-party queries. Both are production-ready — the right choice depends on your team's workflow and budget.