diff --git a/rebar.config b/rebar.config
index e56d63088..85d413a0d 100644
--- a/rebar.config
+++ b/rebar.config
@@ -10,7 +10,7 @@
 
 {deps, [
         {blockchain, {git, "git@github.com:helium/blockchain-core.git",
-                      {branch, "master"}}},
+                      {branch, "macpie/assertloc"}}},
         {hbbft, {git, "https://github.com/helium/erlang-hbbft.git", {branch, "master"}}},
         {dkg, {git, "https://github.com/helium/erlang-dkg.git", {branch, "master"}}},
         {ecc508, {git, "https://github.com/helium/ecc508.git", {branch, "master"}}},
diff --git a/rebar.lock b/rebar.lock
index 1486b555c..1c6dc7576 100644
--- a/rebar.lock
+++ b/rebar.lock
@@ -3,7 +3,7 @@
  {<<"base32">>,{pkg,<<"base32">>,<<"0.1.0">>},3},
  {<<"blockchain">>,
   {git,"git@github.com:helium/blockchain-core.git",
-       {ref,"b0bd97938ae06fe8915c207cc5352f6bbae1d5f6"}},
+       {ref,"7664d2e03a150dd4e4a6acb14c140eea8f1c5bae"}},
   0},
  {<<"clique">>,
   {git,"https://github.com/helium/clique.git",
diff --git a/src/miner.erl b/src/miner.erl
index eb0720aaa..b5cf08ac0 100644
--- a/src/miner.erl
+++ b/src/miner.erl
@@ -341,7 +341,9 @@ handle_call({assert_loc_txn, H3Index, Owner, Payer, Nonce, StakingFee, Fee}, _Fr
     PubKeyBin = libp2p_crypto:pubkey_to_bin(PubKey),
     Txn = blockchain_txn_assert_location_v1:new(PubKeyBin, Owner, Payer, H3Index, Nonce, StakingFee, Fee),
     SignedTxn = blockchain_txn_assert_location_v1:sign_request(Txn, SigFun),
-    {reply, {ok, blockchain_txn:serialize(SignedTxn)}, State};
+    GatewaySign = blockchain_txn_assert_location_v1:gateway_signature(SignedTxn),
+    ReducedTxn = blockchain_txn_assert_location_v1:new(PubKeyBin, GatewaySign, H3Index),
+    {reply, {ok, blockchain_txn:serialize(ReducedTxn)}, State};
 handle_call(consensus_group, _From, State) ->
     {reply, State#state.consensus_group, State};
 handle_call({handoff_consensus, NewConsensusGroup, ElectionHeight}, _From,