Bitcoin Protocol Guide

Learn how Bitcoin actually works — from UTXOs to Taproot. Each concept links to live on-chain data you can explore right now.

Explore History API Reference MCP Setup

Get Started in 30 Seconds

No API key needed. Hit these endpoints from your terminal right now.

Quickstart

1 Check the API is alive
curl https://bitcoinsapi.com/api/v1/health
2 Get current fee estimates
curl https://bitcoinsapi.com/api/v1/fees/recommended
3 Look at the genesis block
curl https://bitcoinsapi.com/api/v1/blocks/0

Protocol Concepts

The building blocks of Bitcoin. Each concept links to a live API endpoint you can query and an MCP tool you can use with AI agents.

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See These Concepts in Action

The History Explorer walks you through 26 key moments in Bitcoin's history — each one linked to the protocol concepts above and live on-chain data.

Open History Explorer →

API Endpoint Catalog

Everything the Satoshi API offers, organized by what you're trying to do. Every endpoint returns clean JSON with a {data, meta} envelope.

Full interactive docs at /docs — or get the machine-readable catalog: curl /api/v1/guide

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Ask AI About Any Block or Transaction

The bitcoin-mcp server connects AI assistants to your Bitcoin node. Ask questions in natural language — Claude, Cursor, or any MCP client.

pip install bitcoin-mcp && bitcoin-mcp
MCP Setup Guide →
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Ready to Build?

GET requests work without an API key. Register for free to unlock POST endpoints, higher rate limits, and streaming.

See Pricing →