# citp/BlockSci

A high-performance tool for blockchain science and exploration

Repository: https://github.com/citp/BlockSci
Canonical: https://ross.abutalabs.com/products/blocksci
Homepage: https://citp.github.io/BlockSci/
Language: C++
License: GPL-3.0
License Family: copyleft
Topics: bitcoin, blockchain, analysis, blocksci
Last push: 2021-12-13T09:59:46+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3287, "days_push": 1724, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1396, forks 270 (observed 2026-08-28T04:04:36.649963+00:00)

## What it is
BlockSci is a high-performance C++ tool and analysis library for blockchain science, featuring a custom in-memory blockchain database with Python bindings and a Jupyter interface. It enables fast, expressive analysis of Bitcoin and other blockchains but is no longer actively developed as of November 2020.

## Use cases
- analyze bitcoin blockchain transactions
- research cryptocurrency transaction patterns
- trace blockchain address clustering
- query blockchain data fast in python
- study miner and user behavior on bitcoin
- explore blockchain data in jupyter notebooks

## When to choose
- you need extremely fast full-blockchain traversal for academic research
- you want a Python/Jupyter interface over raw blockchain data
- your target chain is compatible with the last 2021 release

## When to avoid
- you need maintained software or support for newer blockchain features
- you want ACID guarantees or a general-purpose database
- you need commercial-grade QA and reliability

## Facets
- artifact type: library
- maturity: abandoned
- function: database, data-science, analytics, parser
- domain: blockchain, data-science, analytics, big-data
- platform: cpp, python, cli
- tags: bitcoin, blockchain-analysis, in-memory-database, jupyter, research-software, unmaintained, cryptocurrency, linux, macos

## Member repositories
- citp/BlockSci (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:36.649963+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:39:18.741414+00:00, confidence not recorded.
  - readme: https://github.com/citp/BlockSci (fetched 2026-08-28T04:04:36.649963+00:00, sha 007d939a9804)
  - homepage: https://citp.github.io/BlockSci/ (fetched 2026-08-29T11:53:45.107946+00:00, sha e926105f6e77)
- Data as of 2026-08-30T08:39:29.467469+00:00.