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README.md

bitcoin-rpc-client

This is a lightweight java bitcoind JSON-RPC client binding. It does not require any external dependencies.

Maven

The package is published in the wf.bitcoin group and you can add it to you pom.xml adding a section like this:

<dependency>
    <groupId>wf.bitcoin</groupId>
    <artifactId>bitcoin-rpc-client</artifactId>
    <version>1.1.0</version>
</dependency>

Configuration

In order to know what RPC API to use, the library will look in the bitcoind configuration file (<user home>/.bitcoin/bitcoin.conf) and read the relevant configs:

  • rpcconnect
  • rpcport

Here is a sample bitcoin.conf that will setup bitcoind to run in regtest mode and in a way compatible with this library:

# Maintain full transaction index, used in lookups by the getrawtransaction call
txindex=1

# Run bitcoind in regtest mode
regtest=1

# Accept command line and JSON-RPC commands
server=1

# Tells bitcoind that the RPC API settings on the following lines apply to the regtest RPC API
[regtest]

# RPC API settings
rpcconnect=localhost
rpcport=9997

Note that the configuration does not contain any API credentials. The authentication is done via a temporary token stored in a cookie file by bitcoind (see details). The approach of using rpcuser and rpcpassword is still supported, even though bitcoind considers it legacy.

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