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livebook-examples
LiveBook examples
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prerequisite
Prerequisite
Let's define some aliases, to simplify this document.
alias BitcoinLib.Key.{PrivateKey, PublicKey, PublicKeyHash, Address}
alias BitcoinLib.Key.HD.SeedPhrase
seed-phrase-generation-from-dice-rolls
Seed phrase generation from dice rolls
Randomness is of utmost importance when creating Bitcoin keys. That's why we use multiple dice rolls to make sure private keys are unique. There's a choice of 50 or 99 dice rolls to generate a 12 or 24 word seed phrase.
{:ok, seed_phrase} =
"12345612345612345612345612345612345612345612345612"
|> SeedPhrase.from_dice_rolls(){:ok, "blue involve cook print twist crystal razor february caution private slim medal"}
master-private-key-from-a-seed-phrase
Master private key from a seed phrase
The master private key can monitor and spend funds on a range of addresses.
master_private_key =
seed_phrase
|> PrivateKey.from_seed_phrase()%BitcoinLib.Key.PrivateKey{
key: <<0xe870b890337e36ad866db34824b47a026db4a03f7f2df48eaf6ede61b1fcbfea::256>>,
chain_code: <<0xda54909d3b6b377d2654e0887596b49f8e36c4300fdb9eb9e3e43a47dceda789::256>>,
depth: 0,
index: 0,
parent_fingerprint: <<0x00000000::32>>,
fingerprint: <<0x2aafc40e::32>>
}
master-public-key-from-a-master-private-key
Master public key from a master private key
master_public_key =
master_private_key
|> PublicKey.from_private_key()%BitcoinLib.Key.PublicKey{
key: <<0x03254ed681b40913a4a9c4dc22b920f4bf56cc93ad442f8f9f7e976e166fe9cc56::264>>,
uncompressed_key: <<0x04254ed681b40913a4a9c4dc22b920f4bf56cc93ad442f8f9f7e976e166fe9cc56ce17fd672862c25f33812262e2792f3082ae91e5480e8cad2a483a018bd7c0d1::520>>,
chain_code: <<0xda54909d3b6b377d2654e0887596b49f8e36c4300fdb9eb9e3e43a47dceda789::256>>,
depth: 0,
index: 0,
parent_fingerprint: <<0x00000000::32>>,
fingerprint: <<0x2aafc40e::32>>
}
generate-a-p2pkh-from-a-public-key
Generate a P2PKH from a public key
address =
master_public_key
|> PublicKeyHash.from_public_key()
|> Address.from_public_key_hash(:mainnet)"14thwUvxWWJRZipWUgk1j45LG8qpWu8AxH"