diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9c074781b928..727bfba99a7d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -37,6 +37,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
+### Bug Fixes
+
+* [#15243](https://github.com/cosmos/cosmos-sdk/pull/15243) `LatestBlockResponse` & `BlockByHeightResponse` types' field `sdk_block` was incorrectly cast `proposer_address` bytes to validator operator address, now to consensus address
+
 ## [v0.47.0-rc3](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.47.0-rc3) - 2023-03-01
 
 ### Features
diff --git a/client/grpc/tmservice/util.go b/client/grpc/tmservice/util.go
index ef5083a3a364..21e7ec76ef0f 100644
--- a/client/grpc/tmservice/util.go
+++ b/client/grpc/tmservice/util.go
@@ -21,7 +21,7 @@ func convertHeader(h tmprototypes.Header) Header {
 		EvidenceHash:       h.EvidenceHash,
 		LastResultsHash:    h.LastResultsHash,
 		LastCommitHash:     h.LastCommitHash,
-		ProposerAddress:    sdk.ValAddress(h.ProposerAddress).String(),
+		ProposerAddress:    sdk.ConsAddress(h.ProposerAddress).String(),
 	}
 }
 
diff --git a/tests/e2e/client/grpc/tmservice/service_test.go b/tests/e2e/client/grpc/tmservice/service_test.go
index 65a48ea97db1..31342a94ec96 100644
--- a/tests/e2e/client/grpc/tmservice/service_test.go
+++ b/tests/e2e/client/grpc/tmservice/service_test.go
@@ -91,8 +91,8 @@ func (s *E2ETestSuite) TestQueryLatestBlock() {
 	s.Require().NoError(err)
 	var blockInfoRes tmservice.GetLatestBlockResponse
 	s.Require().NoError(val.ClientCtx.Codec.UnmarshalJSON(restRes, &blockInfoRes))
-	s.Require().Equal(types.ValAddress(blockInfoRes.Block.Header.ProposerAddress).String(), blockInfoRes.SdkBlock.Header.ProposerAddress)
-	s.Require().Contains(blockInfoRes.SdkBlock.Header.ProposerAddress, "cosmosvaloper")
+	s.Require().Equal(types.ConsAddress(blockInfoRes.Block.Header.ProposerAddress).String(), blockInfoRes.SdkBlock.Header.ProposerAddress)
+	s.Require().Contains(blockInfoRes.SdkBlock.Header.ProposerAddress, "cosmosvalcons")
 }
 
 func (s *E2ETestSuite) TestQueryBlockByHeight() {
@@ -104,7 +104,7 @@ func (s *E2ETestSuite) TestQueryBlockByHeight() {
 	s.Require().NoError(err)
 	var blockInfoRes tmservice.GetBlockByHeightResponse
 	s.Require().NoError(val.ClientCtx.Codec.UnmarshalJSON(restRes, &blockInfoRes))
-	s.Require().Contains(blockInfoRes.SdkBlock.Header.ProposerAddress, "cosmosvaloper")
+	s.Require().Contains(blockInfoRes.SdkBlock.Header.ProposerAddress, "cosmosvalcons")
 }
 
 func (s *E2ETestSuite) TestQueryLatestValidatorSet() {