Haskoin

Haskoin is an implementation of the Bitcoin protocol in Haskell. There are currently 3 main packages in Haskoin, namely haskoin-core, haskoin-node and haskoin-wallet.

haskoin-core

haskoin-core is a package implementing the core functionalities of the Bitcoin protocol specifications. The following features are provided:

• Hashing functions (sha-256, ripemd-160)
• Base58 encoding
• BIP32 extended key derivation and parsing (m/1'/2/3)
• BIP39 mnemonic keys
• ECDSA cryptographic primitives (using the C library libsecp256k1)
• Script parsing and evaluation
• Building and signing of standard transactions (regular, multisig, p2sh)
• Parsing and manipulation of all Bitcoin protocol types
• Bloom filters and partial merkle tree library (used in SPV wallets)
• Comprehensive test suite

A wallet implementation is available in haskoin-wallet which uses both this package and the node implementation in haskoin-node.

haskoin-core hackage documentation

haskoin-node

haskoin-node is essentially an SPV (simple payment verification) server node. It implements the Bitcoin network protocol in Haskell and allows the synchronization of headers and the download of merkle blocks. haskoin-node is not a full node (yet) as it only support SPV verification of headers rather than full block validation. The following features are supported:

• Implementation of the Bitcoin network protocol
• Headertree implementation with SPV verification
• Headers-first synchronization
• Merkle block download from peers with bloom filters
• Full block download from peers (without verification)

haskoin-node hackage documentation

haskoin-node dependencies

• LevelDB

On Debian/Ubuntu, use following command:

sudo apt-get install libleveldb-dev

haskoin-wallet

haskoin-wallet is an SPV (simple payment verification) wallet implementation in Haskell. It features BIP32 hierarchical-deterministic key management, deterministic signatures (RFC-6979) and first order support for multi-signature transactions. You can communicate with the wallet process using JSON serialization over ØMQ socket or the supplied hw tool.

haskoin-wallet hackage documentation

Installing haskoin-wallet

Get pkg-config, LevelDB, Snappy, zlib and ØMQ. On Debian/Ubuntu systems, use these command:

sudo apt-get install git wget libleveldb-dev \
    libzmq3-dev libsnappy-dev pkg-config zlib1g-dev

Get Stack.

Clone this repository, and then install using Stack.

git clone https://github.com/haskoin/haskoin.git
cd haskoin
stack install

Executable hw will be installed in ~/.local/bin.

Contributing

Contribute via GitHub pull requests.