# bitcoin-util

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[![Dependency Status](https://david-dm.org/mappum/bitcoin-util.svg)](https://david-dm.org/mappum/bitcoin-util)

**Utility functions for Bitcoin hashes and targets**

## Usage

`npm install bitcoin-util`

### Methods

#### `toHash(hex)`

Takes a hex string that contains a Bitcoin hash as input, and returns a Bitcoin-protocol-friendly little-endian Buffer. Throws an error if the hex string is not of length 64 (representing a 256-bit hash).

#### `compressTarget(target)`

Converts the difficulty target `target` to its compact representation (used in the "bits" field in block headers). `target` should be a `Buffer` (little-endian, the zeroes should be at the end). Returns a `number`.

#### `expandTarget(bits)`

Converts the compressed target integer `bits` to its target hash representation. Returns a `Buffer`.


Utility functions for Bitcoin hashes and targets. 

bitcoin-util

Utility functions for Bitcoin hashes and targets

mappum

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bitcoin-util

bitcoin-util

Usage

Methods

`toHash(hex)`

`compressTarget(target)`

`expandTarget(bits)`

Keywords

Related posts

bitcoin-util

bitcoin-util

Usage

Methods

toHash(hex)

compressTarget(target)

expandTarget(bits)

Keywords

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`toHash(hex)`

`compressTarget(target)`

`expandTarget(bits)`