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Our standard demo setup for demonstrating the Hydra Head protocol.

The demo consists of:

  • a cluster of three Hydra nodes, directly connected to each other, each having access to one of three Hydra credentials alice, bob, or carol;
  • a single Cardano node producing blocks used as a local devnet;
  • a Prometheus server to gather metrics;
  • ad-hoc terminal user interface clients to interact with the individual Hydra nodes;


This video demonstrates a basic terminal user interface for the sake of example. Behind the scene, the terminal client relies on a WebSocket API provided by the Hydra nodes which is what applications will likely be using. Said differently, this is one example of possible application (and to be frank, not a very interesting one!)