bitcoinj/bitcoinj
A library for working with Bitcoin observed · 2026-08-28
Health v2 · maintenance only
89/100
- Activity 99
- Release rhythm 70
- Longevity 100
Flags: no_readme
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 44
- age_days: 4670
- days_rel: 121
- days_push: 7
- n_releases_24m: 4
Adoption not part of the score
5228 stars · 2562 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
bitcoinj is a Java library for working with the Bitcoin protocol, supporting wallet management, sending and receiving transactions via SPV without a local Bitcoin Core copy, and full verification mode. It can be used from any JVM language and includes features like BIP32 key derivation, Segwit, Taproot, and micropayment channels.
Use cases
- build a Bitcoin wallet app for Android
- send and receive Bitcoin transactions from a JVM application
- implement SPV lightweight Bitcoin verification on constrained devices
- create micropayment channels between client and server
- work with BIP32 hierarchical deterministic keys
- parse and construct Bitcoin transactions and scripts
- build a Bitcoin payment service without running Bitcoin Core
When to choose
- you need to embed Bitcoin functionality in a Java, Kotlin, Scala, or other JVM application
- you want SPV mode for smartphone or resource-constrained wallets
- you need support for modern Bitcoin features like Segwit, Bech32, and Taproot
- you want a well-documented library with a large ecosystem of existing apps
When to avoid
- you need a stable API - bitcoinj's API changes between versions
- you require high-performance wallet handling for heavy transaction volumes - the wallet loads all relevant transactions into memory
- you need full node consensus verification in production - full verification mode is experimental
- you are not working on the JVM and cannot use Java interoperability
Facets
library · maturity active
cryptography security networking serialization sdk blockchain fintech developer-tools cross-platform jvm cross-platform bitcoin spv wallet blockchain bip32 segwit taproot payment-protocol micropayment-channels cryptocurrency android
4 sources
- homepage: https://bitcoinj.org · fetched 2026-08-29 · a6a0d3fafcf1
- site_page: https://bitcoinj.org/getting-started · fetched 2026-08-29 · 9698b8d42359
- site_page: https://bitcoinj.org/javadoc/0.17.1 · fetched 2026-08-29 · 21df3d3d9398
- site_page: https://bitcoinj.org/limitations · fetched 2026-08-29 · e72d4676d0ee
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| bitcoinj/bitcoinj | main | 89 |
For agents
markdown · JSON · MCP: product_card(name="bitcoinj/bitcoinj")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem