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# Bitcoin Research Kit
[![MIT Licensed](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/bitcoinresearchkit/brk/blob/main/docs/LICENSE.md)
[![Crates.io](https://img.shields.io/crates/v/brk.svg)](https://crates.io/crates/brk)
[![docs.rs](https://img.shields.io/docsrs/brk)](https://docs.rs/brk)
Open-source on-chain analytics for Bitcoin. Combines functionality of [Glassnode](https://glassnode.com) (on-chain metrics), [mempool.space](https://mempool.space) (block explorer), and [electrs](https://github.com/romanz/electrs) (address index) into a single self-hostable package. [Bitview](https://bitview.space) is an analytics interface built entirely on BRK.
## Data
**Blockchain** — Blocks, transactions, addresses, UTXOs.
**Metrics** — Supply distributions, holder cohorts, network activity, fee markets, mining, and market indicators (realized cap, MVRV, SOPR, NVT).
**Indexes** — Date, height, halving epoch, address type, UTXO age.
**Mempool** — Fee estimation, projected blocks, unconfirmed transactions.
## Usage
### Website
Browse metrics and charts visually. Use it free at [Bitview](https://bitview.space), no signup required.
### API
Query thousands of metrics and blockchain data in JSON or CSV. Freely accessible at [Bitview](https://bitview.space/api).
[Documentation](https://bitview.space/api) · [JavaScript](https://www.npmjs.com/package/brk-client) · [Python](https://pypi.org/project/brk-client) · [Rust](https://crates.io/crates/brk_client)
### Self-host
Run your own website and API. Private, verifiable, self-sovereign. Runs alongside Bitcoin Core.
[Guide](./HOSTING.md)
### Library
Build custom applications in Rust. Use the full stack or individual components (parser, indexer, computer, server).
[Reference](https://docs.rs/brk) · [Architecture](./ARCHITECTURE.md)
## Links
- [Changelog](./CHANGELOG.md)
- [Support](./SUPPORT.md)
- [Contributing](https://github.com/bitcoinresearchkit/brk/issues)
[Discord](https://discord.gg/WACpShCB7M) · [Nostr](https://primal.net/p/nprofile1qqsfw5dacngjlahye34krvgz7u0yghhjgk7gxzl5ptm9v6n2y3sn03sqxu2e6)
Development supported by [OpenSats](https://opensats.org/).
## License
[MIT](./LICENSE.md)