# openassets-ruby [![Build Status](https://travis-ci.org/haw-itn/openassets-ruby.svg?branch=master)](https://travis-ci.org/haw-itn/openassets-ruby) [![Gem Version](https://badge.fury.io/rb/openassets-ruby.svg)](https://badge.fury.io/rb/openassets-ruby) [![MIT License](http://img.shields.io/badge/license-MIT-blue.svg?style=flat)](LICENSE) The implementation of the [Open Assets Protocol](https://github.com/OpenAssets/open-assets-protocol) for Ruby. ## Install ```ruby gem install openassets-ruby ``` ## Configuration Initialize the connection information to the Bitcoin Core server. * **use mainnet** ```ruby require 'openassets' api = OpenAssets::Api.new({ network: 'mainnet', provider: 'bitcoind', cache: 'cache.db', dust_limit: 600, default_fees: 10000, min_confirmation: 1, max_confirmation: 9999999, rpc: { user: 'xxx', password: 'xxx', schema: 'http', port: 8332, host: 'localhost', timeout: 60, open_timeout: 60 } }) ``` * **use testnet** Change `network` and `port` depending on your server setting. ```ruby require 'openassets' api = OpenAssets::Api.new({ network: 'testnet', provider: 'bitcoind', cache: 'testnet.db', dust_limit: 600, default_fees: 10000, min_confirmation: 1, max_confirmation: 9999999, rpc: { user: 'xxx', password: 'xxx', schema: 'http', port: 18332, host: 'localhost', timeout: 60, open_timeout: 60 } }) ``` The configuration options are as follows: |option|description|default| |---|---|---| |**network**|The using network. "mainnet" or "testnet" or "regtest" or "litecoin" or "litecoin_testnet" |mainnet| |**provider**|The RPC server. "bitcoind" is the only option for now.|bitcoind| |**cache**|The path to the database file. Specify ':memory: to use in-memory database.|cache.db| |**dust_limit**|The amount of Bitcoin, which is set to the each output of the Open Assets Protocol (issue or transfer).|600 (satoshi)| |**default_fees**|The default transaction fee in satoshi. Specify ':auto' to use auto fee settings. (used by issue_asset and send_asset, send_bitcoin )|10000 (satoshi)| |**min_confirmation**|The minimum number of confirmations the transaction containing an output that used to get UTXO.|1| |**max_confirmation**|The maximum number of confirmations the transaction containing an output that used to get UTXO.|9999999| |**rpc**|The access information to the RPC server of Bitcoin Core.|N/A| ## API Currently openassets-ruby support the following API. * **list_unspent** Returns an array of unspent transaction outputs, argument with the asset ID and quantity of each output. ```ruby # get all unspent outputs in the wallet. api.list_unspent # specify th open asset address. api.list_unspent(['akTfC7D825Cse4NvFiLCy7vr3B6x2Mpq8t6']) > [ { "txid": "1610a1f62597a3ea36e09e78354be22d2a958c1a38ed9e5d3f1c2811ee82dc37", "vout": 1, "address": "1HhJs3JgbiyxC8ktfi6nU4wTqVmrMtCVkG", "oa_address": "akTfC7D825Cse4NvFiLCy7vr3B6x2Mpq8t6", "script": "76a914b7218fe503cd18555255e5b13d4f07f3fd00d0c988ac", "amount": "0.00000600", "confirmations": 8338, "asset_id": "AWo3R89p5REmoSyMWB8AeUmud8456bRxZL", "account": "openassets-ruby", "asset_quantity": "67", "asset_amount": "6.7", "asset_definition_url": "http://goo.gl/fS4mEj", "proof_of_authenticity": false }, ... ``` Output items are as follows. |Item|description| |:---|:---| |txid|The TXID of the transaction containing the output.| |address| A P2PKH or P2SH address.| |oa_address|The Open Asset address.| |script|The output script.| |amount|The Bitcoin amount.| |confirmations|A score indicating the number of blocks on the best block chain that would need to be modified to remove or modify a particular transaction. | |asset_id|The asset ID is a 160 bits hash, used to uniquely identify the asset stored on the output.| |account|The name of an account.| |asset_quantity|The asset quantity is an unsigned integer representing how many units of that asset are stored on the output.| |asset_amount| The asset amount is the value obtained by converting the asset quantity to the unit of divisibility that are defined in the Asset definition file. | |asset_definition_url|The url of asset definition file.| |proof_of_authenticity|The result of [Proof of Authenticity](https://github.com/OpenAssets/open-assets-protocol/blob/master/asset-definition-protocol.mediawiki#Proof_of_Authenticity) that is checked consistent with the subject in the SSL certificate. If the result is true, issuer is verified. If the result is false, issuer is not verified. This verification is performed only if link_to_website that is defined in Asset Definition File is true.| * **get_balance** Returns the balance in both bitcoin and colored coin assets for all of the addresses available in your Bitcoin Core wallet. ```ruby # get all balance in the wallet. api.get_balance # specify the open asset address. api.get_balance('akTfC7D825Cse4NvFiLCy7vr3B6x2Mpq8t6') > [ { "address": "1HhJs3JgbiyxC8ktfi6nU4wTqVmrMtCVkG", "oa_address": "akTfC7D825Cse4NvFiLCy7vr3B6x2Mpq8t6", "value": "0.00018200", "assets": [ { "asset_id": "AWo3R89p5REmoSyMWB8AeUmud8456bRxZL", "quantity": "81", "amount": "20.7", "asset_definition_url": "http://goo.gl/fS4mEj", "proof_of_authenticity": false }, { "asset_id": "AJk2Gx5V67S2wNuwTK5hef3TpHunfbjcmX", "quantity": "67", "amount": "6.7", "asset_definition_url": "", "proof_of_authenticity": false } ], "account": "openassets-ruby" }, ``` Output items are as follows. |Item|description| |:---|:---| |address| A P2PKH or P2SH address.| |oa_address|The Open Asset address.| |value|The Bitcoin amount.| |assets|The array of the assets.| |asset_id|The asset ID is a 160 bits hash, used to uniquely identify the asset stored on the output.| |asset_quantity|The asset quantity is an unsigned integer representing how many units of that asset are stored on the output.| |asset_amount| The asset amount is the value obtained by converting the asset quantity to the unit of divisibility that are defined in the Asset definition file. | |asset_definition_url|The url of asset definition file.| |proof_of_authenticity|The result of [Proof of Authenticity](https://github.com/OpenAssets/open-assets-protocol/blob/master/asset-definition-protocol.mediawiki#Proof_of_Authenticity) that is checked consistent with the subject in the SSL certificate. If the result is true, issuer is verified. If the result is false, issuer is not verified. This verification is performed only if link_to_website that is defined in Asset Definition File is true.| |account|The name of an account.| * **issue_asset** Creates a transaction for issuing an asset. ```ruby # issue asset # api.issue_asset(, # , # , # , # , # , # ) # example address = 'akEJwzkzEFau4t2wjbXoMs7MwtZkB8xixmH' api.issue_asset(address, 150, 'u=https://goo.gl/bmVEuw', address, nil, 'broadcast') ``` If specified ``output_qty``, the issue output is divided by the number of output_qty. Ex, amount = 125 and output_qty = 2, the marker output asset quantity is [62, 63] and issue TxOut is two. * **send_asset** Creates a transaction for sending an asset from the open asset address to another. ```ruby # send asset # api.send_asset(, # , # , # , # , # , # ) # example from = 'akXDPMMHHBrUrd1fM756M1GSB8viVAwMyBk' to = 'akTfC7D825Cse4NvFiLCy7vr3B6x2Mpq8t6' api.send_asset(from, 'AWo3R89p5REmoSyMWB8AeUmud8456bRxZL', 100, to, 10000, 'broadcast') ``` If specified ``output_qty``, the send output is divided by the number of output_qty. Ex, asset holding amount = 200, and send amount = 125 and output_qty = 2, the marker output asset quantity is [62, 63, 75] and send TxOut is three. The last of the asset quantity is change asset output. * **send_bitcoin** Creates a transaction for sending bitcoins from an address to another. This transaction inputs use only uncolored outputs. ```ruby # send bitcoin # api.send_bitcoin(, # , # , # , # , # ) # example from = '14M4kbAtn71P1nnNYuhBDFTNYxa19t1XP6' to = '1MFW7BTwiNbAkmVz4SzAMQXboKYKGSzkq2' api.send_bitcoin(from, 60000, to) ``` If specified ``output_qty``, the send output is divided by the number of output_qty. Ex, amount = 60000 and output_qty = 2, send TxOut is two (each value is 30000, 30000) and change TxOut one. * **get_outputs_from_txid** Get tx outputs. (use for debug) ```ruby # api.get_outputs_from_txid(, ) # example api.get_outputs_from_txid('3fba8bfb157ae29c293d5bd65c178fec169a87f880e2e62537fcce26612a6aa3') > [{ "address": "14M4kbAtn71P1nnNYuhBDFTNYxa19t1XP6", "oa_address": "akEJwzkzEFau4t2wjbXoMs7MwtZkB8xixmH", "script": "76a91424b3d405bc60bd9628691fe28bb00f6800e1480688ac", "amount": "0.00000600", "asset_id": "AWo3R89p5REmoSyMWB8AeUmud8456bRxZL", "asset_quantity": "1", "asset_amount": "1", "account": null, "asset_definition_url": "", "txid": "3fba8bfb157ae29c293d5bd65c178fec169a87f880e2e62537fcce26612a6aa3", "vout": 1 },.. ``` * **send_assets** Creates a transaction for sending **multiple** asset from the open asset address(es) to another. `` is used to send bitcoins **if** needed, and receive bitcoin change **if** any. ```ruby # send assets # api.send_assets(, # , # , # , # ) # example from = api.address_to_oa_address('mrxpeizRrF8ymNx5FrvcGGZVecZjtUFVP3') to = api.address_to_oa_address('n4MEsSUN8GktDFZzU3V55mP3jWGMN7e4wE') params = [] params << OpenAssets::SendAssetParam.new('oGu4VXx2TU97d9LmPP8PMCkHckkcPqC5RY', 50, to) params << OpenAssets::SendAssetParam.new('oUygwarZqNGrjDvcZUpZdvEc7es6dcs1vs', 4, to) tx = api.send_assets(from, params) # send assets from multiple addresses. change_address = 'mwxeANpckdbdgZCpUMTceQhbbhLPJiqpfD' from = [ api.address_to_oa_address("mrxpeizRrF8ymNx5FrvcGGZVecZjtUFVP3"), api.address_to_oa_address("mvYbB238p3rFYFjM56cHhNNHeQb5ypQJ3T") ] to = api.address_to_oa_address('n4MEsSUN8GktDFZzU3V55mP3jWGMN7e4wE') params = [] params << OpenAssets::SendAssetParam.new('oGu4VXx2TU97d9LmPP8PMCkHckkcPqC5RY', 100, to, from[0]) params << OpenAssets::SendAssetParam.new('oUygwarZqNGrjDvcZUpZdvEc7es6dcs1vs', 100, to, from[1]) tx = api.send_assets(change_address, params) ``` * **send_bitcoins** Creates a transaction for sending **multiple** bitcoins from an address to others. This transaction inputs use only uncolored outputs. ```ruby # send bitcoins # api.send_bitcoins(, # , # , # , # ) # example from = 'mrxpeizRrF8ymNx5FrvcGGZVecZjtUFVP3' to1 = 'n4MEsSUN8GktDFZzU3V55mP3jWGMN7e4wE' to2 = 'mvYbB238p3rFYFjM56cHhNNHeQb5ypQJ3T' params = [] params << OpenAssets::SendBitcoinParam.new(50000, to1) params << OpenAssets::SendBitcoinParam.new(3000, to2) tx = api.send_bitcoins(from, params) ``` * **burn_asset** Creates a transaction for burn asset. This API is to burn the asset by spending the all UTXO of specified asset as Bitcoin. ```ruby # burn_asset # api.burn_asset(, # , # , # # example oa_address = 'bX2vhttomKj2fdd7SJV2nv8U4zDjusE5Y4B' asset_id = 'oGu4VXx2TU97d9LmPP8PMCkHckkcPqC5RY' tx = api.burn_asset(oa_address, asset_id) ``` **Note:** Burned asset will not be able to again get. ## Command line interface Openassets-ruby comes with a `openassets` command line interface that allows easy interaction with OpenAssets. ### Usage openassets [options] [command] Options: -c path to config JSON which is passed to OpenAssets::Api.new - see Configuration for details -e load conifg from ENV variables (look at the exe/openassets file for details) commands: * console runs an IRB console and gives you an initialized Api instance to interact with OpenAssets * any method on the API instance, helpful for get_balance, list_unspent ## License openassets-ruby is licensed under the [MIT License](LICENSE).