diff --git a/build.rs b/build.rs
index b5c2cda4..c55f956b 100644
--- a/build.rs
+++ b/build.rs
@@ -16,6 +16,7 @@ const SERVICES: &[&str] = &[
     "src/service/downlink.proto",
     "src/service/multi_buy.proto",
     "src/service/packet_verifier.proto",
+    "src/service/sub_dao.proto",
 ];
 
 const MESSAGES: &[&str] = &[
diff --git a/src/lib.rs b/src/lib.rs
index 0984b9e7..6c512944 100755
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -15,6 +15,12 @@ pub mod services {
         ServiceProvider, ServiceProviderPromotions,
     };
 
+    pub mod sub_dao {
+        include!(concat!(env!("OUT_DIR"), "/helium.sub_dao.rs"));
+        pub use sub_dao_client::SubDaoClient;
+        pub use sub_dao_server::{SubDao, SubDaoServer};
+    }
+
     pub mod iot_config {
         include!(concat!(env!("OUT_DIR"), "/helium.iot_config.rs"));
         pub use admin_client as config_admin_client;
diff --git a/src/reward_manifest.proto b/src/reward_manifest.proto
index de04b002..c093496b 100644
--- a/src/reward_manifest.proto
+++ b/src/reward_manifest.proto
@@ -5,10 +5,17 @@ package helium;
 import "decimal.proto";
 import "service_provider.proto";
 
+enum mobile_reward_token {
+  mobile_reward_token_mobile = 0;
+  mobile_reward_token_hnt = 1;
+}
+
 message mobile_reward_data {
   Decimal poc_bones_per_reward_share = 1;
   Decimal boosted_poc_bones_per_reward_share = 2;
   repeated service_provider_promotions service_provider_promotions = 3;
+  // HIP-138: Reward output was changed from Subdao Tokens to HNT
+  mobile_reward_token token = 4;
 }
 
 message service_provider_promotions {
@@ -30,10 +37,17 @@ message service_provider_promotions {
   repeated promotion promotions = 3;
 }
 
+enum iot_reward_token {
+  iot_reward_token_iot = 0;
+  iot_reward_token_hnt = 1;
+}
+
 message iot_reward_data {
   Decimal poc_bones_per_beacon_reward_share = 1;
   Decimal poc_bones_per_witness_reward_share = 2;
   Decimal dc_bones_per_share = 3;
+  // HIP-138: Reward output was changed from Subdao Tokens to HNT
+  iot_reward_token token = 4;
 }
 
 message reward_manifest {
@@ -46,4 +60,8 @@ message reward_manifest {
     mobile_reward_data mobile_reward_data = 4;
     iot_reward_data iot_reward_data = 5;
   }
+  // the epoch of the reward share
+  uint64 epoch = 6;
+  /// Price of HNT @ 10^8 used when calculating the rewards
+  uint64 price = 7;
 }
diff --git a/src/service/mobile_config.proto b/src/service/mobile_config.proto
index 865c2376..d6821e11 100644
--- a/src/service/mobile_config.proto
+++ b/src/service/mobile_config.proto
@@ -5,7 +5,6 @@ package helium.mobile_config;
 import "hex_boosting.proto";
 import "service_provider.proto";
 import "reward_manifest.proto";
-
 // ------------------------------------------------------------------
 // Message Definitions
 // ------------------------------------------------------------------
diff --git a/src/service/poc_mobile.proto b/src/service/poc_mobile.proto
index 7fc27a85..6b1d29aa 100644
--- a/src/service/poc_mobile.proto
+++ b/src/service/poc_mobile.proto
@@ -697,7 +697,8 @@ message gateway_reward {
   uint64 dc_transfer_reward = 2;
   /// count of rewardable bytes transfered
   uint64 rewardable_bytes = 3;
-  /// Price of MOBILE @ 10^6 used when calculating rewards
+  /// Price of HNT @ 10^8 used when calculating rewards
+  // todo: deprecate this ? replaced with price in manifest
   uint64 price = 4;
 }
 
diff --git a/src/service/sub_dao.proto b/src/service/sub_dao.proto
new file mode 100644
index 00000000..63beadb3
--- /dev/null
+++ b/src/service/sub_dao.proto
@@ -0,0 +1,45 @@
+syntax = "proto3";
+
+package helium.sub_dao;
+
+message sub_dao_epoch_reward_info {
+  // The epoch of the reward info
+  uint64 epoch = 1;
+  // The on-chain identity of the epoch
+  string epoch_address = 2;
+  // The on-chain identity of the subdao
+  string sub_dao_address = 3;
+  // The total HNT rewards emitted for the sub dao and epoch minus the
+  // delegation rewards
+  uint64 hnt_rewards_issued = 4;
+  // The total HNT delegation rewards emitted for the sub dao and epoch
+  uint64 delegation_rewards_issued = 5;
+  // timestamp in seconds when the rewards were issued
+  uint64 rewards_issued_at = 6;
+}
+
+message sub_dao_epoch_reward_info_req_v1 {
+  // The on-chain identity of the subdao to lookup
+  string sub_dao_address = 1;
+  // The epoch for the specified subdao to look up
+  uint64 epoch = 2;
+  // pubkey binary of the signing keypair
+  bytes signer = 3;
+  bytes signature = 4;
+}
+
+message sub_dao_epoch_reward_info_res_v1 {
+  // The reward info for the specified subdao & epoch
+  sub_dao_epoch_reward_info info = 1;
+  // unix epoch timestamp in seconds
+  uint64 timestamp = 2;
+  // pubkey binary of the signing keypair
+  bytes signer = 3;
+  bytes signature = 4;
+}
+
+service sub_dao {
+  // Get reward info for the specified subdao & epoch
+  rpc info(sub_dao_epoch_reward_info_req_v1)
+      returns (sub_dao_epoch_reward_info_res_v1);
+}