ACES Ark to Ethereum Channel Service with lite clients
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ACES Ark-Ethereum Lite Dual Channel Service

ACES Ark to Ethereum lite dual channel web service using Geth light sync client to provide ARK-ETH and ETH-ARK transfer channels.

Set Ethereum Client

Install Go Ethereum client (geth)

sudo add-apt-repository -y ppa:ethereum/ethereum
sudo apt-get update

sudo apt-get install software-properties-common build-essential
sudo apt-get install ethereum

Start geth (testnet)

geth --testnet --syncmode "light" --datadir "/data/ethereum-testnet/" \
--rpc --rpcapi eth,web3,personal --cache=1024  --rpcport 8545

Connect to geth ipc command line (testnet)

geth --testnet attach ipc:/data/ethereum-testnet/geth.ipc

Create service ethereum account

Connect to geth ipc command line and run the following to create a new account:

var password = "change-me";

Set up local database

docker run -d -p 5432:5432 \
--name aces_ark_ethereum_lite_dual_channel_service_db \
-e POSTGRES_USER=postgres \
-e POSTGRES_DB=aces_ark_ethereum_lite_dual_channel_service_db \


Copy src/main/resources/application.yml into an external file on your system (for example: /etc/opt/{service-name}/application.yml) and replace configuration properties to match your local setup. For example, you would need to change the service address and passphrase to an actual account.

Run Channel Service

mvn clean spring-boot:run --spring.config.location=file:/etc/{service-name}/application.yml

Run Channel Service (production)

To run the application in a live environment, you can build a jar package using mvn package and then run the jar app generated under /target build directory with you custom configuration:

java -jar {jar-name}.jar --spring.config.location=file:/etc/{service-name}/application.yml

Using the Service

Get service info:

curl http://localhost:9190/ethereumArkChannel

Create a new Service Contract:

curl -X POST http://localhost:9190/ethereumArkChannel/contracts \
-H 'Content-type: application/json' \
-d '{
  "arguments": {
    "recipientArkAddress": "..."
  "id": "abe05cd7-40c2-4fb0-a4a7-8d2f76e74978",
  "createdAt": "2017-07-04T21:59:38.129Z",
  "correlationId": "4aafe9-4a40-a7fb-6e788d2497f7",
  "status": "executed",
  "results": {
    "recipientArkAddress": "...",
    "depositEthAddress": "...",
    "transfers": []

Get Contract information after sending ARK funds to depositEthAddress:

curl -X GET http://localhost:9190/ethereumArkChannel/contracts/{id}
  "id": "abe05cd7-40c2-4fb0-a4a7-8d2f76e74978",
  "createdAt": "2017-07-04T21:59:38.129Z",
  "correlationId": "4aafe9-4a40-a7fb-6e788d2497f7",
  "status": "executed",
  "results": {
    "recipientArkAddress": "...",
    "depositEthAddress": "...",
    "transfers" : [ {
      "id" : "uDui0F8PIjldKyGm0rdd",
      "status" : "new",
      "createdAt" : "2018-01-21T20:24:52.057Z",
      "ethTransactionId" : "...",
    } ]