Bitissuer utilizes the Open Assets protocol to issue its assets, a simple and powerful open source protocol built on top of the Bitcoin Blockchain, allowing transfer of assets via Bitcoin compatible wallets. You can utilize any Open Assets wallet you wish, or even design your own. Learn more about the Open Assets protocol by visiting To learn about "colored coins" read


WARNING: When receiving assets from others than Bitissuer, always check the Asset ID of the Bitissuer asset from the respective Bitissuer asset's page, even if the Bitissuer image and ticker shown in the wallet match what you expect. All Bitissuer assets are verified and verifiable ONLY at

Block Explorers

Open Source

  • Python module: The reference implementation of the Open Assets Protocol
  • Colorcore: A client providing a command line and RPC interface for performing operations through the Open Assets Protocol
  • NBitcoin: A Complete .NET Library for Bitcoin with its TransactionBuilder to issue, transfer and swap assets
  • BTCRuby: A Complete Ruby Library for Bitcoin with its TransactionBuilder to issue, transfer and swap assets
  • CoreBitcoin: A Complete Objective-C Library for Bitcoin with support for Payment Requests and Payment Methods
  • openassets-ruby: A Ruby implementation of the Open Assets Protocol. This library is able to perform Open Assets operations using APIs like Colorcore.
  • openassets-js: A JavaScript implementation of the Open Assets Protocol.
  • android-wallet: A Java implementation of the Open Assets Protocol, source code for Coinprism Android Wallet.
  • BCNExplorer: A blockchain explorer that explores the blockchain and shows information about blocks, transactions, assets, address balances etc.
  • Open Assets specifications: This document describes the Open Assets protocol used for storing and transferring custom, non-native assets on the Blockchain. Assets are represented by tokens called colored coins.

APIs and Other

  • Coinprism API: Colored coins API for the Open Assets protocol. The Coinprism API allows you to issue, check and send colored coins and bitcoins using the Open Assets protocol. You can also get information from the blockchain about bitcoin and colored coin transactions.
  • Block Cypher API: You can utilize this set of APIs to easily issue, check, and transfer assets. This set of endpoints currently leverages the Open Assets Protocol, a simple, robust method of embedding assets across any blockchain that supports null-data outputs.
  • QBit Ninja API: QBit Ninja is an open source web service API to query the blockchain and for tracking wallets. Servers gently provided by Nicolas Dorier (tips appreciated at 15sYbVpRh6dyWycZMwPdxJWD4xbfxReeHe).