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Informations about the package coinparams


This project provides crypto currency specific information such as key prefixes, DNS seeds, network ports, etc.

Data is available in JSON format and human readable tables. Language bindings are available for JS and PHP.

It is intended for use as a quick reference or in any software that is working with multiple cryptocurrencies, no matter the programming language.

Here's the data.

Meta Prefixes Networking Genesis Blocks JSON

The above files contain data mainly for bitcoin-derived coins.

Some additional metadata for coins and tokens not listed can be found in coinmeta.json.

How to use

For any language

Just copy coinparams.json into your project and read it as you would read any JSON file.


First, install the package using npm:

npm install coinparams --save

Then, require the package and use it like so:

var coinparams = require('coinparams');

console.log(coinparams.get_coin_network('DASH', 'test'));

// console.log(coinparams.get_all_coins());
// console.log(coinparams.get_raw_json());


$ cd yourproject
$ composer require dan-da/coinparams

include in your code and use via:

require_once 'path/to/vendor/autoload.php';

// get all info for single coin
$info = coinParams::get_coin('BTC');

// get info for a coin + network (main, test, regest)
$info = coinParams::get_coin_network('DOGE', 'main');

// get info for all coins
$info = coinParams::get_all_coins();

// get raw json text for all coins
$buf = coinParams::get_raw_json();

How values are obtained

For bitcoin and bitcoin derivates, values have been automatically parsed directly from the original source code of each cryptocurrency repo on github. The script gen-masters-from-coin-src.php performs this task.

For non bitcoin derivates (eg eth, monero, decred, etc) the values are manually obtained.

Metadata such as website urls and max supply have been scraped from

How values are tested

There is a simple validation script that checks for any problems in the json tree structure, ie missing or empty fields. It does not ensure correctness of values.

Advanced testing such as generating addresses or connecting to a a running instance of each altcoin has not been attempted.

Contributions welcome.

If you wish to add new coins or update an existing one, please submit a pull request. There is one file per coin in the ./coins directory. Just use an existing file such as BTC.json as a template.

If you are adding a bitcoin derivative, you can try adding it to the list in gen-masters-from-coin-src.php. Then run the script. If successful, validate with check-masters-valid.php then submit a pull request for the script and the new coin.json file.

If you wish to add new language bindings, please see the example under bindings/php or bindings/js and try to keep the api similar. Also, please try to use no more than one file (eg for package manager) in the project root directory per language.

Pull Requests

Please include the output of running:

$ ./check-masters-valid.php <yourcoin-symbol>

The file should fully validate (main, test, regtest) for the pull request to be accepted.


Use at your own risk.

The author makes no claims or guarantees of correctness.

By using this software you agree to take full responsibility for any losses incurred before, during, or after the usage, whatsoever the cause, and not to hold the software author liable in any manner.

No informations.

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