version: v1
upstreams:
  - id: infura-eth
    chain: ethereum
    connection:
      ethereum:
        rpc:
          url: "https://mainnet.infura.io/v3/${INFURA_USER}"
        ws:
          url: "wss://mainnet.infura.io/ws/v3/${INFURA_USER}"
  - id: infura-kovan
    chain: kovan
    connection:
      ethereum:
        rpc:
          url: "https://kovan.infura.io/v3/${INFURA_USER}"