multisig-money-tree

Bitcoin BIP-45 implementation on Ruby

Example for work with MultisigMoneyTree

  ruby bin/demo.rb

For generate RDoc run

  bundle exec rdoc

How to use

Set general requirements

NETWORK = :thebestcoin_testnet
REQUIRED_SIGNS = 2

Create cosigners master

cs_1_master = MultisigMoneyTree::Master.seed(0, network: NETWORK)
cs_2_master = MultisigMoneyTree::Master.seed(1, network: NETWORK)

cs_1_keys = {
  private: cs_1_master.to_bip32(:private, network: NETWORK),
  public: cs_1_master.to_bip32(:public, network: NETWORK)
}

cs_2_keys = {
  private: cs_1_master.to_bip32(:private, network: NETWORK),
  public: cs_1_master.to_bip32(:public, network: NETWORK)
}

Create cosigners nodes

# Init Master Node for bip32 key 
cs_1_public_master = MultisigMoneyTree::Master.from_bip32(0, cs_1_keys[:public])

# Get deposit node for 1-th address
cs_1_deposit_node = cs_1_public_master.node_for(0, 1)
cs_1_public_node = {
    pubkey: cs_1_deposit_node.to_bip32(:public, network: NETWORK),
    address: cs_1_deposit_node.to_address(network: NETWORK)
}

In the same way, we initialize the node for the cosigner # 2

Create multisig node

# Pack public nodes bip32 keys cosigners to hash with cosigner index
keys = { 
  0 => cs_0_public_node[:pubkey], 
  1 => cs_1_public_node[:pubkey]
}

# Init BIP45 (multisig) node
multisig_node = MultisigMoneyTree::BIP45Node.new({
  required_signs: REQUIRED_SIGNS,
  public_keys: keys,
  network: NETWORK
})

Create multisig address

# Get the address and other elements of multisig addresses
multisig = {
  address: node.to_address,
  redeem_script: node.redeem_script.hth,
  public_key: node.to_bip45(network: NETWORK),
}

With the help of a public_key, we can in the future restore the multisig node by using the method MultisigMoneyTree::Master.from_bip45(pubkey)