I discover that forks in poa network can happen!
I have 4 nodes (trusted nodes) I want to create a poa network with no forks, is it possible ?
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Since since the only POA consensus mechanism on Geth uses clique which uses GHOST , the only option is use a consensus mechanism with instant finality.
I would look at Quorum (IBFT) or Pantheon (IBFT 2.0)