anchor.diff:      %% need Acceptors (given via RTMs), Learner,
       %% validate locally via callback
       DB = dht_node_state:get(DHT_Node_State, db),
  -    {NewDB, Proposal} = apply(element(1, RTLogEntry),
  +    {NewDB, Proposal} = apply(tx_tlog:get_entry_operation(RTLogEntry),
                                 validate,
                                 [DB, RTLogEntry]),
   
  
positive.code:     pdb:delete(PaxosId, TP_DB),
      dht_node_state:set_db(DHT_Node_State, NewDB).
  
  -spec on_tx_commitreply_fwd(tuple(), commit | abort, commit | abort,
                              dht_node_state:state())
                             -> dht_node_state:state().
  on_tx_commitreply_fwd(RTLogEntry, Result, OwnProposal, DHT_Node_State) ->
  
negative.code:     %% (optimized: embed the proposer's accept message in registerTP message)
      dht_node_state:set_db(DHT_Node_State, NewDB).
  
  -spec on_tx_commitreply({tx_item_state:paxos_id(), tx_tlog:tlog_entry()},
                          commit | abort, dht_node_state:state())
                         -> dht_node_state:state().
  on_tx_commitreply({PaxosId, RTLogEntry}, Result, DHT_Node_State) ->
      ?TRACE("tx_tp:on_tx_commitreply({, ...})~n", []),
  