nimbus-eth1/tools/t8n/testdata/1/env.json

{
  "currentCoinbase": "0xc94f5374fce5edbc8e2a8697c15331677e6ebf0b",
  "currentDifficulty": "0x20000",
  "currentGasLimit": "0x750a163df65e8a",
  "currentNumber": "1",
  "currentTimestamp": "1000"
}