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HDPublicKey

@opcat-labs/scrypt-ts-opcat v1.0.4

@opcat-labs/scrypt-ts-opcat / HDPublicKey

Class: HDPublicKey

Defined in: node_modules/@opcat-labs/opcat/types/hdpublickey.d.cts:10

The representation of an hierarchically derived public key.

See https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki

Param​

Constructors​

new HDPublicKey()​

new HDPublicKey(arg): HDPublicKey

Defined in: node_modules/@opcat-labs/opcat/types/hdpublickey.d.cts:20

The representation of an hierarchically derived public key.

See https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki

Parameters​

arg​

any

Returns​

HDPublicKey

Properties​

toObject()​

toObject: () => object

Defined in: node_modules/@opcat-labs/opcat/types/hdpublickey.d.cts:81

Returns a plain JavaScript object with information to reconstruct a key.

Fields are:

  • network: 'livenet' or 'testnet'
  • depth: a number from 0 to 255, the depth to the master extended key
  • fingerPrint: a number of 32 bits taken from the hash of the public key
  • fingerPrint: a number of 32 bits taken from the hash of this key's parent's public key
  • childIndex: index with which this key was derived
  • chainCode: string in hexa encoding used for derivation
  • publicKey: string, hexa encoded, in compressed key format
  • checksum: this._buffers.checksum.readUInt32BE(0)
  • xpubkey: the string with the base58 representation of this extended key
  • checksum: the base58 checksum of xpubkey

Returns​

object

chainCode​

chainCode: any

checksum​

checksum: any

childIndex​

childIndex: any

depth​

depth: any

fingerPrint​

fingerPrint: any

network​

network: any

parentFingerPrint​

parentFingerPrint: any

publicKey​

publicKey: any

xpubkey​

xpubkey: any

Methods​

deriveChild()​

deriveChild(arg, hardened?): HDPublicKey

Defined in: node_modules/@opcat-labs/opcat/types/hdpublickey.d.cts:48

WARNING: This method will not be officially supported until v1.0.0.

Get a derivated child based on a string or number.

If the first argument is a string, it's parsed as the full path of derivation. Valid values for this argument include "m" (which returns the same public key), "m/0/1/40/2/1000".

Note that hardened keys can't be derived from a public extended key.

If the first argument is a number, the child with that index will be derived. See the example usage for clarification.

Parameters​

arg​

The index or path to derive

string | number

hardened?​

boolean

Whether to use hardened derivation

Returns​

HDPublicKey

The derived child public key

Example​

var parent = new HDPublicKey('xpub...');
var child_0_1_2 = parent.deriveChild(0).deriveChild(1).deriveChild(2);
var copy_of_child_0_1_2 = parent.deriveChild("m/0/1/2");
assert(child_0_1_2.xprivkey === copy_of_child_0_1_2);

inspect()​

inspect(): string

Defined in: node_modules/@opcat-labs/opcat/types/hdpublickey.d.cts:63

Returns the console representation of this extended public key.

Returns​

string

string

toBuffer()​

toBuffer(): Buffer

Defined in: node_modules/@opcat-labs/opcat/types/hdpublickey.d.cts:108

Return a buffer representation of the xpubkey

Returns​

Buffer

toHex()​

toHex(): Buffer

Defined in: node_modules/@opcat-labs/opcat/types/hdpublickey.d.cts:114

Return a hex string representation of the xpubkey

Returns​

Buffer

toJSON()​

toJSON(): object

Defined in: node_modules/@opcat-labs/opcat/types/hdpublickey.d.cts:92

Returns​

object

chainCode​

chainCode: any

checksum​

checksum: any

childIndex​

childIndex: any

depth​

depth: any

fingerPrint​

fingerPrint: any

network​

network: any

parentFingerPrint​

parentFingerPrint: any

publicKey​

publicKey: any

xpubkey​

xpubkey: any

toString()​

toString(): string

Defined in: node_modules/@opcat-labs/opcat/types/hdpublickey.d.cts:58

Returns the base58 checked representation of the public key

Returns​

string

a string starting with "xpub..." in livenet