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hdnode.md

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HDNode

HDNode stands for Hierarchically Deterministic node which can be used to create a HD wallet.

fromSeed

Create HDNode from Seed Buffer.

Arguments

  1. rootSeed Buffer: root seed buffer
  2. network string optional: network. default: 'mainnet'

Result

HDNode HDNode

Examples

  // create mnemonic
  let mnemonic = bitbox.Mnemonic.generate(128);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  bitbox.HDNode.fromSeed(seedBuffer);

  // generate entropy
  let entropy = bitbox.Crypto.randomBytes(32);
  // create mnemonic from entropy
  let mnemonic = bitbox.Mnemonic.fromEntropy(entropy);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  bitbox.HDNode.fromSeed(seedBuffer);

derive

Derive non hardened child HDNode

Arguments

  1. hdnode HDNode
  2. num number: number of child node. Ex: 0

Result

HDNode HDNode

Examples

  // create mnemonic
  let mnemonic = bitbox.Mnemonic.generate(128);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  let hdNode = bitbox.HDNode.fromSeed(seedBuffer);
  // derive unhardened child HDNode
  bitbox.HDNode.derive(hdNode, 0);

deriveHardened

Derive hardened child HDNode

Arguments

  1. hdnode HDNode
  2. num number: number of child node. Ex: 0

Result

HDNode HDNode

Examples

  // create mnemonic
  let mnemonic = bitbox.Mnemonic.generate(128);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  let hdNode = bitbox.HDNode.fromSeed(seedBuffer);
  // derive hardened child HDNode
  bitbox.HDNode.deriveHardened(hdNode, 0);

derivePath

Derive child HDNode from path

Arguments

  1. hdnode HDNode
  2. path string: path of child hd node. Ex: "m/44'/145'/0'"

Result

HDNode HDNode

Examples

  // create mnemonic
  let mnemonic = bitbox.Mnemonic.generate(128);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  let hdNode = bitbox.HDNode.fromSeed(seedBuffer);
  // derive hardened child HDNode
  bitbox.HDNode.derivePath(hdNode, "m/44'/145'/0'");

toLegacyAddress

Get legacy address of HDNode

Arguments

  1. hdnode HDNode

Result

legacyAddress string: legacy base58check encoded address of HDNode

Examples

  // create mnemonic
  let mnemonic = bitbox.Mnemonic.generate(128);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  let hdNode = bitbox.HDNode.fromSeed(seedBuffer);
  // to legacy address
  bitbox.HDNode.toLegacyAddress(hdNode);
  // 14apxtw2LDQmXWsS5k4JEhG93Jzjswhvma

  // generate entropy
  let entropy = bitbox.Crypto.randomBytes(32);
  // create mnemonic from entropy
  let mnemonic = bitbox.Mnemonic.fromEntropy(entropy);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  let hdNode = bitbox.HDNode.fromSeed(seedBuffer);
  // to cash address
  bitbox.HDNode.toLegacyAddress(hdNode);
  // 14mVsq3H5Ep2Jb6AqoKsmY1BFHKCBGPDLi

toCashAddress

Get cash address of HDNode

Arguments

  1. hdnode HDNode
  2. regtest boolean optional: return regtest address

Result

cashAddress string: cashaddr encoded address of HDNode

Examples

  // create mnemonic
  let mnemonic = bitbox.Mnemonic.generate(128);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  let hdNode = bitbox.HDNode.fromSeed(seedBuffer);
  // to cash address
  bitbox.HDNode.toCashAddress(hdNode);
  // bitcoincash:qqrz6kqw6nvhwgwrt4g7fggepvewtkr7nukkeqf4rw

  // generate entropy
  let entropy = bitbox.Crypto.randomBytes(32);
  // create mnemonic from entropy
  let mnemonic = bitbox.Mnemonic.fromEntropy(entropy);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  let hdNode = bitbox.HDNode.fromSeed(seedBuffer);
  // to cash address
  bitbox.HDNode.toCashAddress(hdNode);
  // bitcoincash:qq549jxsjv66kw0smdju4es2axnk7hhe9cquhjg4gt

toWIF

Get private key in wallet import format (WIF) of HDNode

Arguments

  1. hdnode HDNode

Result

privateKeyWIF string: private key in wallet import format (WIF) of HDNode

Examples

  // create mnemonic
  let mnemonic = bitbox.Mnemonic.generate(128);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  let hdNode = bitbox.HDNode.fromSeed(seedBuffer);
  // to WIF
  bitbox.HDNode.toWIF(hdNode);
  // L5E8QjFnLukp8BuF4uu9gmvvSrbafioURGdBve5tA3Eq5ptzbMCJ

  // generate entropy
  let entropy = bitbox.Crypto.randomBytes(32);
  // create mnemonic from entropy
  let mnemonic = bitbox.Mnemonic.fromEntropy(entropy);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  let hdNode = bitbox.HDNode.fromSeed(seedBuffer);
  // to WIF
  bitbox.HDNode.toWIF(hdNode);
  // KwobPFhv3AuXc3ps6YtWfMVRpLBDBA7jnJddurfELTyTNcFhZYpJ

toXPub

Get extended public key of HDNode

Arguments

  1. hdnode HDNode

Result

xpub string: extended public key of HDNode

Examples

  // create mnemonic
  let mnemonic = bitbox.Mnemonic.generate(128);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  let hdNode = bitbox.HDNode.fromSeed(seedBuffer);
  // to extended public key
  bitbox.HDNode.toXPub(hdNode);
  // xpub661MyMwAqRbcG4CnhNYoK1r1TKLwQQ1UdC3LHoWFK61rsnzh7Hx35qQ9Z53ucYcE5WvA7GEDXhqqKjSY2e6Y8n7WNVLYHpXCuuX945VPuYn

  // generate entropy
  let entropy = bitbox.Crypto.randomBytes(32);
  // create mnemonic from entropy
  let mnemonic = bitbox.Mnemonic.fromEntropy(entropy);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  let hdNode = bitbox.HDNode.fromSeed(seedBuffer);
  // to extended public key
  bitbox.HDNode.toXPub(hdNode);
  // xpub661MyMwAqRbcFuMLeHkSbTNwNHG9MQyrAZqV1Q4MEAsmj9MYa5sxg8WC2LKqW6EHviHVucBjWi1n38juZpDDeX3U6YrsMeACdcNSTHkM8BQ

toXPriv

Get extended private key of HDNode

Arguments

  1. hdnode HDNode

Result

xpriv string: extended private key of HDNode

Examples

  // create mnemonic
  let mnemonic = bitbox.Mnemonic.generate(128);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  let hdNode = bitbox.HDNode.fromSeed(seedBuffer);
  // to extended private key
  bitbox.HDNode.toXPriv(hdNode);
  // xprv9s21ZrQH143K2eMCcbT4qwwRhw6qZaPaEDWB792bnrxQZPoP2JUk4kfEx9eeV1uGTAWAfCqYr4wDWo52qALiukizKwQzvEyNR1fWZJi97Kv

  // generate entropy
  let entropy = bitbox.Crypto.randomBytes(32);
  // create mnemonic from entropy
  let mnemonic = bitbox.Mnemonic.fromEntropy(entropy);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  let hdNode = bitbox.HDNode.fromSeed(seedBuffer);
  // to extended private key
  bitbox.HDNode.toXPriv(hdNode);
  // xprv9s21ZrQH143K2b5GPP6zHz22E6LeCgQXJtwNbC3MA3Kz7Se7tveKo96EhqwFtSkYWkyenVcMqM7uq35PcUNG8cUdpsJEgwKG3dvfP7TmL3v

toKeyPair

Get the ECPair of an HDNode

Arguments

  1. hdnode HDNode

Result

keyPair ECPair: ECPair of an HDNode

Examples

  // create mnemonic
  let mnemonic = bitbox.Mnemonic.generate(128);
  // create root seed buffer from mnemonic
  let rootSeed= bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from root seed
  let hdNode = bitbox.HDNode.fromSeed(rootSeed);
  // create public key buffer from HDNode
  bitbox.HDNode.toKeyPair(hdNode);

  // generate entropy
  let entropy = bitbox.Crypto.randomBytes(32);
  // create mnemonic from entropy
  let mnemonic = bitbox.Mnemonic.fromEntropy(entropy);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  let hdNode = bitbox.HDNode.fromSeed(seedBuffer);
  // create public key buffer from HDNode
  bitbox.HDNode.toKeyPair(hdNode);

toPublicKey

Get the public key of an HDNode as a buffer

Arguments

  1. hdnode HDNode

Result

publicKeyBuffer Buffer: public key of HDNode as a buffer

Examples

  // create mnemonic
  let mnemonic = bitbox.Mnemonic.generate(128);
  // create root seed buffer from mnemonic
  let rootSeed= bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from root seed
  let hdNode = bitbox.HDNode.fromSeed(rootSeed);
  // create public key buffer from HDNode
  bitbox.HDNode.toPublicKey(hdNode);
  // <Buffer 03 86 d6 d3 db ec 1a 93 8c 2c a2 63 c9 79 8f eb e9 16 09 c5 a2 9b 07 65 c4 79 1f d9 0f fa 4d 27 20>

  // generate entropy
  let entropy = bitbox.Crypto.randomBytes(32);
  // create mnemonic from entropy
  let mnemonic = bitbox.Mnemonic.fromEntropy(entropy);
  // create seed buffer from mnemonic
  let seedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create HDNode from seed buffer
  let hdNode = bitbox.HDNode.fromSeed(seedBuffer);
  // create public key buffer from HDNode
  bitbox.HDNode.toPublicKey(hdNode);
  // <Buffer 02 d2 26 74 6e 78 03 ac 11 e0 96 c6 24 de e8 dd 62 52 e7 8e 51 56 8a c1 18 62 aa 2a 72 50 1d ea 7d>

toIdentifier

hash160 of Node’s public key. The same value you would see in a scriptPubKey.

Arguments

  1. hdnode HDNode

Result

identifier Buffer

Examples

  // mainnet
  let xpub = 'xpub6DWfGUo4cjC8oWmgZdpyFMH6v3oeyADfdUPhsehzn5jX44zpazivha3JxUtkcCvBEB1c6DGaiUmpyz2m1DRfGDEVZ5VxLLW2UNEbZ5iTRvi';
  let node = bitbox.HDNode.fromXPub(xpub);
  bitbox.HDNode.toIdentifier(node);
  // <Buffer cd d4 84 1d 2e 96 bf bf f7 9c d1 f4 a6 75 22 1c 7f 67 88 9c>
  // the same as if we hash160ed it's publicKey
  let publicKeyBuffer = bitbox.HDNode.toPublicKey(node);
  bitbox.Crypto.hash160(publicKeyBuffer);
  // <Buffer cd d4 84 1d 2e 96 bf bf f7 9c d1 f4 a6 75 22 1c 7f 67 88 9c>

  // testnet
  let xpub = 'tpubDCxmZ3qLVVphg6NpsnAjQFqDPwr9HYqSgoAcUYAfqSgo32dL6NA8QXqWsS6XTjoGggohZKvujsAv2F2ugej9qfUYau2jSUB4JaYnfMsx3MJ';
  let node = bitbox.HDNode.fromXPub(xpub);
  bitbox.HDNode.toIdentifier(node);
  // <Buffer e1 8e 20 e3 f8 f1 c0 53 e6 1f 9e 3a 58 8e 71 f5 0b 8d 2d c4>
  // the same as if we hash160ed it's publicKey
  let publicKeyBuffer = bitbox.HDNode.toPublicKey(node);
  bitbox.Crypto.hash160(publicKeyBuffer);
  // <Buffer e1 8e 20 e3 f8 f1 c0 53 e6 1f 9e 3a 58 8e 71 f5 0b 8d 2d c4>

fromXPriv

Generate HDNode from extended private key

Arguments

  1. xpriv string: extended private key

Result

hdNode HDNode

Examples

  // mainnet xpriv
  bitbox.HDNode.fromXPriv('xprv9s21ZrQH143K2b5GPP6zHz22E6LeCgQXJtwNbC3MA3Kz7Se7tveKo96EhqwFtSkYWkyenVcMqM7uq35PcUNG8cUdpsJEgwKG3dvfP7TmL3v');

  // testnet xpriv
  bitbox.HDNode.fromXPriv('tprv8gQ3zr1F5pRHMebqqhorrorYNvUG3XkcZjSWVs2cEtRwwJy1TRhgRx4XcF8dYHM2eyTbTCcdKYNhqgyBQphxwRoVyVKr9zuyoA8WxNDRvom');

fromXPub

Generate HDNode from extended public key

Arguments

  1. xpub string: extended public key

Result

hdNode HDNode

Examples

  // mainnet xpub
  bitbox.HDNode.fromXPub('xpub661MyMwAqRbcFuMLeHkSbTNwNHG9MQyrAZqV1Q4MEAsmj9MYa5sxg8WC2LKqW6EHviHVucBjWi1n38juZpDDeX3U6YrsMeACdcNSTHkM8BQ');

  // testnet xpub
  bitbox.HDNode.fromXPub('tpubDD669G3VEC6xF7ddjMUTGDWewwzCCrwX933HnP4ufAELmoDn5pXGcSgPnLodjFvWQwRXkG94f77BatEDA8dfQ99yy97kRYynUpNLENEqTBo');

isPublic

Check if an HDNode can only derive public keys and children

Arguments

  1. hdnode HDNode

Result

isPublic boolean

Examples

  // mainnet xpub
  let xpub = 'xpub6DWfGUo4cjC8oWmgZdpyFMH6v3oeyADfdUPhsehzn5jX44zpazivha3JxUtkcCvBEB1c6DGaiUmpyz2m1DRfGDEVZ5VxLLW2UNEbZ5iTRvi';
  let node = bitbox.HDNode.fromXPub(xpub);
  bitbox.HDNode.isPublic(node);
  // true

  // mainnet xpriv
  let xpriv = 'xprv9ys4cvcoU8RoxqkZ7Fgt33te4LPHgcsKwyoZYVorkzp9uonWxWgP9wiSQhPeBUqVHbdAyov4Yi55RywBkDfZKdJFRqA51Anz6v72zGaMGZp';
  let node = bitbox.HDNode.fromXPriv(xpriv);
  bitbox.HDNode.isPublic(node);
  // false

  // testnet xpub
  let xpub = 'tpubDCxmZ3qLVVphg6NpsnAjQFqDPwr9HYqSgoAcUYAfqSgo32dL6NA8QXqWsS6XTjoGggohZKvujsAv2F2ugej9qfUYau2jSUB4JaYnfMsx3MJ';
  let node = bitbox.HDNode.fromXPub(xpub);
  bitbox.HDNode.isPublic(node);
  // true

  // testnet xpriv
  let xpriv = 'tprv8ggxJ8SG5EdqakzVUeLa9Gr7sqCdEcJPUNDmtdJscNxfmxoXvU36ZguiUWukJVEWEixAUr8pJabJkCt33wzxFQA587gqN51Lxdxx97zAzuG';
  let node = bitbox.HDNode.fromXPriv(xpriv);
  bitbox.HDNode.isPublic(node);
  // false

isPrivate

Check if an HDNode can derive both public and private keys and children

Arguments

  1. hdnode HDNode

Result

isPrivate boolean

Examples

  // mainnet xpub
  let xpub = 'xpub6DWfGUo4cjC8oWmgZdpyFMH6v3oeyADfdUPhsehzn5jX44zpazivha3JxUtkcCvBEB1c6DGaiUmpyz2m1DRfGDEVZ5VxLLW2UNEbZ5iTRvi';
  let node = bitbox.HDNode.fromXPub(xpub);
  bitbox.HDNode.isPrivate(node);
  // false

  // mainnet xpriv
  let xpriv = 'xprv9ys4cvcoU8RoxqkZ7Fgt33te4LPHgcsKwyoZYVorkzp9uonWxWgP9wiSQhPeBUqVHbdAyov4Yi55RywBkDfZKdJFRqA51Anz6v72zGaMGZp';
  let node = bitbox.HDNode.fromXPriv(xpriv);
  bitbox.HDNode.isPrivate(node);
  // true

  // testnet xpub
  let xpub = 'tpubDCxmZ3qLVVphg6NpsnAjQFqDPwr9HYqSgoAcUYAfqSgo32dL6NA8QXqWsS6XTjoGggohZKvujsAv2F2ugej9qfUYau2jSUB4JaYnfMsx3MJ';
  let node = bitbox.HDNode.fromXPub(xpub);
  bitbox.HDNode.isPrivate(node);
  // false

  // testnet xpriv
  let xpriv = 'tprv8ggxJ8SG5EdqakzVUeLa9Gr7sqCdEcJPUNDmtdJscNxfmxoXvU36ZguiUWukJVEWEixAUr8pJabJkCt33wzxFQA587gqN51Lxdxx97zAzuG';
  let node = bitbox.HDNode.fromXPriv(xpriv);
  bitbox.HDNode.isPrivate(node);
  // true

sign

Sign 32 byte hash encoded as a buffer

Arguments

  1. hdnode HDNode
  2. buffer Buffer

Result

signature ECSignature

Examples

  // mainnet xpriv
  let xpriv = 'xprv9z2uWrGjbYPxc728rvtMi4jt4SudRiSfYn6Tdif5XN17pJ1NTbHoHK6JePkPLY1NHXLaQcA6sWudpZDm7DwKhbsGQieAp9wx46Wbio4iXg9';
  // hdnode from xpriv
  let hdnode = bitbox.HDNode.fromXPriv(xpriv);
  // 32 byte buffer
  let buf = Buffer.from(bitbox.Crypto.sha256('EARTH'), 'hex');
  // sign
  bitbox.HDNode.sign(hdnode, buf);

  // testnet xpriv
  let xpriv = 'tprv8ggxJ8SG5EdqakzVUeLa9Gr7sqCdEcJPUNDmtdJscNxfmxoXvU36ZguiUWukJVEWEixAUr8pJabJkCt33wzxFQA587gqN51Lxdxx97zAzuG';
  // hdnode from xpriv
  let hdnode = bitbox.HDNode.fromXPriv(xpriv);
  // 32 byte buffer
  let buf = Buffer.from(bitbox.Crypto.sha256('EARTH'), 'hex');
  // sign
  bitbox.HDNode.sign(hdnode, buf);

verify

Verify signed 32 byte hash encoded as a buffer

Arguments

  1. hdnode HDNode
  2. buffer Buffer
  3. signature ECSignature

Result

verified boolean

Examples

  // mainnet xprivs
  let xpriv1 = 'xprv9ys4cvcoU8RoqvzxGj886r4Ey3w1WfVNYH8sMnVPVzyQtaPPM6Q8pHm3D9WPWvEupGEgcJ1xLaGaZDcvKfoAurE2AzHRRRup5FuHzDr8n15';
  let xpriv2 = 'xprv9ys4cvcoU8RoxqkZ7Fgt33te4LPHgcsKwyoZYVorkzp9uonWxWgP9wiSQhPeBUqVHbdAyov4Yi55RywBkDfZKdJFRqA51Anz6v72zGaMGZp';
  // hdnodes from xprivs
  let hdnode1 = bitbox.HDNode.fromXPriv(xpriv1);
  let hdnode2 = bitbox.HDNode.fromXPriv(xpriv2);
  // 32 byte buffer
  let buf = Buffer.from(bitbox.Crypto.sha256('EARTH'), 'hex');
  // sign
  let signature = bitbox.HDNode.sign(hdnode1, buf);
  // verify
  bitbox.HDNode.verify(hdnode1, buf, signature);
  // true
  bitbox.HDNode.verify(hdnode2, buf, signature);
  // false

  // testnet xprivs
  let xpriv1 = 'tprv8ggxJ8SG5EdqakzVUeLa9Gr7sqCdEcJPUNDmtdJscNxfmxoXvU36ZguiUWukJVEWEixAUr8pJabJkCt33wzxFQA587gqN51Lxdxx97zAzuG';
  let xpriv2 = 'tprv8ggxJ8SG5EdqiM6Dn63QwHScQ7HS5hXqUMxSD1NEbDyPw6VtoUMFZBAohpTMsPz9cYbpHELmA4Zm79NKRvEvFdhWRX2bSmu7V7PiNb364nv';
  // hdnodes from xprivs
  let hdnode1 = bitbox.HDNode.fromXPriv(xpriv1);
  let hdnode2 = bitbox.HDNode.fromXPriv(xpriv2);
  // 32 byte buffer
  let buf = Buffer.from(bitbox.Crypto.sha256('EARTH'), 'hex');
  // sign
  let signature = bitbox.ECPair.sign(hdnode1, buf);
  // verify
  bitbox.HDNode.verify(hdnode1, buf, signature);
  // true
  bitbox.HDNode.verify(hdnode2, buf, signature);
  // false

createAccount

Create BIP32 account. Has getChainAddress and nextChainAddress helper methods.

Arguments

  1. hdNodes HDNode[]

Result

account: Object

Examples

  // create mnemonic
  let mnemonic = bitbox.Mnemonic.generate(128);
  // create root seed buffer
  let rootSeedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create master hd node
  let masterHDNode = bitbox.HDNode.fromSeed(rootSeedBuffer);
  // derive child node
  let childNode = masterHDNode.derivePath("m/44'/145'/0'/0");
  // create account
  let account = bitbox.HDNode.createAccount([childNode]);

getChainAddress

Returns the latest address from account

Arguments

  1. account: number

Result

address: string

Examples

  // create mnemonic
  let mnemonic = bitbox.Mnemonic.generate(128);
  // create root seed buffer
  let rootSeedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create master hd node
  let masterHDNode = bitbox.HDNode.fromSeed(rootSeedBuffer);
  // derive child node
  let childNode = masterHDNode.derivePath("m/44'/145'/0'/0");
  // create account
  let account = bitbox.HDNode.createAccount([childNode]);
  account.getChainAddress(0)
  // 1EsibxXqzxzcor7eS34dSGrZp1kb3nQFFr

nextChainAddress

Moves the most recent address forward for account

Arguments

  1. account: number

Result

address: string

Examples

  // create mnemonic
  let mnemonic = bitbox.Mnemonic.generate(128);
  // create root seed buffer
  let rootSeedBuffer = bitbox.Mnemonic.toSeed(mnemonic);
  // create master hd node
  let masterHDNode = bitbox.HDNode.fromSeed(rootSeedBuffer);
  // derive child node
  let childNode = masterHDNode.derivePath("m/44'/145'/0'/0");
  // create account
  let account = bitbox.HDNode.createAccount([childNode]);
  account.getChainAddress(0)
  // 1EsibxXqzxzcor7eS34dSGrZp1kb3nQFFr
  account.nextChainAddress(0)
  account.getChainAddress(0)
  // 1JBApcAMD3riimPxABg2pNvwLumP9DEpxD