ERC20 withdraw service

ERC20 withdraw service is a bridge between TokenD and Ethereum blockchain which allows to withdraw tokens from TokenD to Ethereum blockchain.

Usage

Enviromental variable KV_VIPER_FILE must be set and contain path to desired config file.

erc20-withdraw-svc run withdraw

Watchlist

In order for service to start watching withdrawals in specific asset, asset details in TokenD must have entry of the following form:

{ 
//...
  "erc20": {
   "withdraw": true, 
   "address": "0x0000000000000000000",  //contract address
   },
//...
}

Service will only listen for withdraw requests with 2048 pending tasks flag set and 4096 flag not set. So, either value by key withdrawal_tasks:*, or withdrawal_tasks:ASSET_CODE must contain 2048 flag and must not contain flag 4096.

Config

horizon:
  endpoint: "SOME_VALID_ADDRESS"
  signer: "G_ASSET_OWNER_SECRET_KEY" # Issuer of assets

withdraw:
  signer: "S_ASSET_OWNER_SECRET_KEY"
  owner: "G_ASSET_OWNER_ADDRESS"
  
rpc:
  endpoint: "ws://ETH_NODE_ADDRESS"

transfer:
  seed: "SECRET_SEED"
  address: "SOURCE_ADDRESS"
  confirmations: 20 #number of confirmations to wait for
  gas_limit: 30000 #maximal amount of gas to be used by transfer transaction
  gas_price: 20 #price per gas unit


log:
  level: debug
  disable_sentry: true

Ethereum node

Node must be configured to accept connections through websockets. Origin must be explicitly or implicitly whitelisted: either --wsorigins "some_origin", or --wsorigins * to accept all connections.