# bip136js

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A javascript library for encoding and decoding [BIP 136 TxRefs](https://github.com/bitcoin/bips/blob/master/bip-0136.mediawiki). This package passes all [test cases](https://github.com/bitcoin/bips/blob/master/bip-0136.mediawiki#user-content-Test_Examples) from the spec.

This library goes beyond the spec to attempt to decode TxRefs that have had the [Human-Readable Part](https://github.com/bitcoin/bips/blob/master/bip-0136.mediawiki#user-content-HumanReadable_Part) (HRP) stripped off but are otherwise valid.

## Installation

```
npm i bip136
```

## Usage

```javascript
import * as bip136 from 'bip136';

// decodes TxRefs with separators
bip136.decode('tx1:r29u-mqjx-putt-3p0');
// { network: 'mainnet', blockHeight: 456789, txIndex: 1234 }

// decodes TxRefs without separators
bip136.decode('TX1R29UMQJXPUTT3P0');
// { network: 'mainnet', blockHeight: 456789, txIndex: 1234 }

// decodes TxRefs with invalid characters
bip136.decode('tx1!r29u/mqj*x-putt^^3p0');
// { network: 'mainnet', blockHeight: 456789, txIndex: 1234 }

// decodes TxRefs with outpoints
bip136.decode('tx1:y7ll-llll-lpqq-s4qz-hw');
// { network: 'mainnet', blockHeight: 16777215, txIndex: 32767, outpoint: 1 }

// decodes TxRefs with the HRP stripped off
bip136.decode('xz8e-kyyp-qmff-zyt');
// { network: 'testnet', blockHeight: 2470513, txIndex: 36 }

// encodes TxRefs
bip136.encode({
  blockHeight: 709635,
  txIndex: 60,
});
// 'tx1:rxq2-tpup-q0nd-lah'
```


A javascript library for encoding and decoding BIP136 TxRefs. 

bip136

A javascript library for encoding and decoding BIP136 TxRefs

sangaman

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bip136js

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