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Corda Token SDK


This project is open source under an Apache 2.0 licence. That means you can submit PRs to fix bugs and add new features if they are not currently available.

What is the token SDK?

The token SDK exists to make it easy for CorDapp developers to create CorDapps which use tokens. Functionality is provided to create token types, then issue, move and redeem tokens of a particular type.

The tokens SDK comprises three CorDapp JARs:

  1. Contracts which contains the base types, states and contracts
  2. Workflows which contains flows for issuing, moving and redeeming tokens as well as utilities for the above operations.
  3. Money which contains token type definitions for various currencies
  4. Selection that contains both database and in memory token selection of fungible tokens

The token SDK is intended to replace the "finance module" from the core Corda repository.

For more details behind the token SDK's design, see here.

How to use the SDK?

Using the tokens template.

By far the easiest way to get started with the token-sdk is to use the tokens-template which is a branch on the kotlin version of the "CorDapp template". You can obtain it with the following commands:

git clone
cd cordapp-template-kotlin
git checkout token-template

Once you have cloned the repository, you should open it with IntelliJ. This will give you a template repo with the token SDK dependencies already included and some example code which should illustrate you how to use token SDK. You can deployNodes to create three nodes:

./gradlew clean deployNodes

You can issue some currency tokens from PartyA to PartyB from Party A's shell with the following command:

start ExampleFlowWithFixedToken currency: GBP, amount: 100, recipient: PartyB

See the token template code here for more information.

Build Tokens SDK against Corda release branch

Often, in order to use the latest token-sdk master you will need to build against a specific Corda release branch until the required changes make it into a Corda release. At the time of writing tokens 1.1-SNAPSHOT requires Corda 4.3-SNAPSHOT. You can build this branch with the following commands:

git clone
git fetch
git checkout origin release/os/4.3

Then run a ./gradlew clean install from the root directory.

Adding token SDK dependencies to an existing CorDapp

First, add a variable for the tokens release group and the version you wish to use and set the corda version that should've been installed locally::

buildscript {
    ext {
        tokens_release_version = '1.1'
        tokens_release_group = 'com.r3.corda.lib.tokens'

Second, you must add the tokens development artifactory repository to the list of repositories for your project:

repositories {
    maven { url '' }
    maven { url '' }

Now, you can add the token-sdk dependencies to the dependencies block in each module of your CorDapp. For contract modules add:

cordaCompile "$tokens_release_group:tokens-contracts:$tokens_release_version"

In your workflow build.gradle add:

cordaCompile "$tokens_release_group:tokens-workflows:$tokens_release_version"

and add selection module:

cordaCompile "$tokens_release_group:tokens-selection:$tokens_release_version"

For FiatCurrency and DigitalCurrency definitions add:

cordaCompile "$tokens_release_group:tokens-money:$tokens_release_version"

If you want to use the deployNodes task, you will need to add the following dependencies to your root build.gradle file:

cordapp "$tokens_release_group:tokens-contracts:$tokens_release_version"
cordapp "$tokens_release_group:tokens-workflows:$tokens_release_version"
cordapp "$tokens_release_group:tokens-money:$tokens_release_version"
cordapp "$tokens_release_group:tokens-selection:$tokens_release_version"

These should also be added to the deployNodes task with the following syntax:

nodeDefaults {
    projectCordapp {
        deploy = false

Installing the token SDK binaries

If you wish to build the token-sdk from source then do the following to publish binaries to your local maven repository:

git clone
cd token-sdk
./gradlew clean install

Where to go next?

Introduction to token SDK

Most common tasks

Simple delivery versus payment tutorial

Other useful links

Token SDK Design

Experimental in memory token selection





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