anchor.diff:  
   mine_key_block(HeaderBin, Target, Nonce, Attempts) when Attempts > 0 ->
       case rpc(aec_mining, mine, [HeaderBin, Target, Nonce]) of
  -        {ok, {Nonce, PowEvidence}} = Res ->
  +        {ok, {Nonce, _PowEvidence}} = Res ->
               Res;
           {error, no_solution} ->
               mine_key_block(HeaderBin, Target, aec_pow:next_nonce(Nonce), Attempts - 1)
  
positive.code:     Salt = 1234,
  
      {ok, 200, #{<<"commitment_id">> := EncodedCHash}} = get_commitment_id(Name, Salt),
      {ok, CHash} = aec_base58c:safe_decode(commitment, EncodedCHash),
  
      %% Submit name preclaim tx and check it is in mempool
      PreclaimData = #{commitment_id => EncodedCHash,
  
negative.code:     ws_mine_key_block(ConnPid, ?NODE, 1),
  
      %% Fetch the pubkey via HTTP
      {ok, 200, #{ <<"pub_key">> := _}} = get_node_pubkey(),
  
      %% Post spend tx
      {ok, 200, #{<<"tx">> := Tx}} =
  