Well, seems like @nazrhom was right, and all peers and their keys should just be provided by CLI. By docs is seems like there is no discovery functionality, and the idea of dynamic peers list at all was closed (https://github.com/input-output-hk/hydra/issues/240).
hydra-demo uses just two hydra-nodes, but for more of them paras like peers and verification keys should just take more as many paras as there are peers instead of one.
Well, seems like @nazrhom was right, and all peers and their keys should just be provided by CLI. By docs is seems like there is no discovery functionality, and the idea of dynamic peers list at all was closed (https://github.com/input-output-hk/hydra/issues/240).
hydra-demouses just two hydra-nodes, but for more of them paras likepeersand verification keys should just take more as many paras as there are peers instead of one.