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The epilogue stage of the program is intended to perform the final validation on the outputs from the execution phase. In most programs, this entails comparing the outputs of the execution phase to portions of the bootstrap data made available during the prologue phase. Generally, this phase should consist almost entirely of validation steps.

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Example

In the kona-client program, the prologue phase only contains two directives:
  1. Validate that the L2 safe chain could be produced at the claimed L2 block height.
  2. The constructed output root is equivalent to the claimed L2 output root.