Seat Substitution Docket

seat_substitution_docket:
  source_seat_row: required
  original_holder: required
  substituted_holder: required
  substitution_authority_or_absence: required
  proof_or_absence: required
  harmed_reader_or_absence: required
  requested_future_use: required
  selected_seat_posture: required
  seat_state_after: required
  future_reader_or_route_effect: required
  counter_deltas: required

The docket is the visible card that keeps a replacement claim from becoming invisible ledger authority. It must show whether the substituted holder has a receipt, who is displaced, and which later broadcast or route will read the seat state.