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Version: v1.4

Custom Graffiti

By default, Charon adds a charon/<version>-<commitSHA> graffiti to all block proposals. This can be customized using the --graffiti and --graffiti-disable-client-append CLI flags.

The --graffiti flag accepts either:

  • A single string, which will be used by all validators, or
  • A comma-separated list of strings, allowing each validator to have a unique graffiti (one string per validator).

Each graffiti has a maximum length of 28 bytes to leave room for Charon to append a suffix containing the Obol signature, OB, and the specific consensus client type used, <CL_TYPE>. This behavior can be disabled by setting the --graffiti-disable-client-append flag which also increases the maximum graffiti length to 32 bytes.