I've installed geth on ubuntu 16.04 (xenial). After creating the following genesis.json file:

  "config": {

        "chainId": 4568,

        "homesteadBlock": 0,

        "eip150Block": 0,

        "eip155Block": 0,

        "eip158Block": 0


  "alloc"      : {},

  "difficulty" : "0x400",

  "extraData"  : "",

  "gasLimit"   : "0x7A1200",

  "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",

  "timestamp"  : "0x00"


I created an account (same as eth.coinbase) and launched miner.start(). The hashrate is >0 and I receive the following message "Looking for peers" for more than 2 hours. I don't understand:

  • why do I need to look for peers in a privately run blockchain?
  • why is it taking so long ?


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