diff --git a/Makefile b/Makefile
index ec229f44..9464df0e 100644
--- a/Makefile
+++ b/Makefile
@@ -86,3 +86,13 @@ gen-old-faithful-proto: install-protoc
 		--go-grpc_out=paths=source_relative:$$(pwd)/old-faithful-proto/old-faithful-grpc \
 		-I=$$(pwd)/old-faithful-proto/proto/ \
 		$$(pwd)/old-faithful-proto/proto/old-faithful.proto
+gen-old-faithful-proto-system:
+	@mkdir -p $$(pwd)/old-faithful-proto/old-faithful-grpc
+	@echo "Generating golang protobuf for old-faithful..."
+	# the proto file is in old-faithful-proto/proto ; generate go code in old-faithful-proto/faithful-grpc
+	protoc \
+		--experimental_allow_proto3_optional \
+		--go_out=paths=source_relative:$$(pwd)/old-faithful-proto/old-faithful-grpc \
+		--go-grpc_out=paths=source_relative:$$(pwd)/old-faithful-proto/old-faithful-grpc \
+		-I=$$(pwd)/old-faithful-proto/proto/ \
+		$$(pwd)/old-faithful-proto/proto/old-faithful.proto
diff --git a/grpc-server.go b/grpc-server.go
index dcad5b1b..d51832f1 100644
--- a/grpc-server.go
+++ b/grpc-server.go
@@ -19,6 +19,7 @@ import (
 	cidlink "github.com/ipld/go-ipld-prime/linking/cid"
 	"github.com/rpcpool/yellowstone-faithful/compactindexsized"
 	"github.com/rpcpool/yellowstone-faithful/ipld/ipldbindcode"
+	"github.com/rpcpool/yellowstone-faithful/iplddecoders"
 	old_faithful_grpc "github.com/rpcpool/yellowstone-faithful/old-faithful-proto/old-faithful-grpc"
 	"github.com/rpcpool/yellowstone-faithful/tooling"
 	"golang.org/x/sync/errgroup"
@@ -29,6 +30,8 @@ import (
 	"k8s.io/klog/v2"
 )
 
+const maxSlotsToStream uint64 = 100
+
 // ListeAndServe starts listening on the configured address and serves the RPC API.
 func (me *MultiEpoch) ListenAndServeGRPC(ctx context.Context, listenOn string) error {
 	lis, err := net.Listen("tcp", listenOn)
@@ -622,3 +625,76 @@ func (multi *MultiEpoch) GetBlockTime(ctx context.Context, params *old_faithful_
 		BlockTime: int64(blocktime),
 	}, nil
 }
+
+func (multi *MultiEpoch) StreamBlocks(params *old_faithful_grpc.StreamBlocksRequest, ser old_faithful_grpc.OldFaithful_StreamBlocksServer) error {
+	ctx := ser.Context()
+
+	startSlot := params.StartSlot
+	endSlot := startSlot + maxSlotsToStream
+
+	if params.EndSlot != nil {
+		endSlot = *params.EndSlot
+	}
+
+	filterFunc := func(block *old_faithful_grpc.BlockResponse) bool {
+		if params.Filter == nil || len(params.Filter.AccountInclude) == 0 {
+			return true
+		}
+
+		return blockContainsAccounts(block, params.Filter.AccountInclude)
+	}
+
+	for slot := startSlot; slot <= endSlot; slot++ {
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		default:
+		}
+
+		block, err := multi.GetBlock(ctx, &old_faithful_grpc.BlockRequest{Slot: slot})
+		if err != nil {
+			if status.Code(err) == codes.NotFound {
+				continue // is this the right thing to do?
+			}
+			return err
+		}
+
+		if filterFunc(block) {
+			if err := ser.Send(block); err != nil {
+				return err
+			}
+		}
+	}
+
+	return nil
+}
+
+func blockContainsAccounts(block *old_faithful_grpc.BlockResponse, accounts []string) bool {
+	accountSet := make(map[string]struct{}, len(accounts))
+	for _, acc := range accounts {
+		accountSet[acc] = struct{}{}
+	}
+
+	for _, tx := range block.Transactions {
+		decoded, err := iplddecoders.DecodeTransaction(tx.Transaction)
+		if err != nil {
+			klog.Warningf("Failed to decode transaction: %w", err)
+			continue // skip if there's error decoding
+		}
+		solTx, err := decoded.GetSolanaTransaction()
+		if err != nil {
+			klog.Warningf("Failed to get sol transaction: %w", err)
+			continue
+		}
+
+		for _, acc := range solTx.Message.AccountKeys {
+			if _, exists := accountSet[acc.String()]; exists {
+				return true
+			}
+		}
+
+	}
+
+	return false
+
+}
diff --git a/old-faithful-proto/old-faithful-grpc/old-faithful.pb.go b/old-faithful-proto/old-faithful-grpc/old-faithful.pb.go
index 6bb1ede0..cd4f53a4 100644
--- a/old-faithful-proto/old-faithful-grpc/old-faithful.pb.go
+++ b/old-faithful-proto/old-faithful-grpc/old-faithful.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.2
-// 	protoc        v5.27.1
+// 	protoc-gen-go v1.35.1
+// 	protoc        v5.28.3
 // source: old-faithful.proto
 
 package old_faithful_grpc
@@ -74,11 +74,9 @@ type VersionRequest struct {
 
 func (x *VersionRequest) Reset() {
 	*x = VersionRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_old_faithful_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_old_faithful_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *VersionRequest) String() string {
@@ -89,7 +87,7 @@ func (*VersionRequest) ProtoMessage() {}
 
 func (x *VersionRequest) ProtoReflect() protoreflect.Message {
 	mi := &file_old_faithful_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -114,11 +112,9 @@ type VersionResponse struct {
 
 func (x *VersionResponse) Reset() {
 	*x = VersionResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_old_faithful_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_old_faithful_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *VersionResponse) String() string {
@@ -129,7 +125,7 @@ func (*VersionResponse) ProtoMessage() {}
 
 func (x *VersionResponse) ProtoReflect() protoreflect.Message {
 	mi := &file_old_faithful_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -161,11 +157,9 @@ type BlockRequest struct {
 
 func (x *BlockRequest) Reset() {
 	*x = BlockRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_old_faithful_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_old_faithful_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *BlockRequest) String() string {
@@ -176,7 +170,7 @@ func (*BlockRequest) ProtoMessage() {}
 
 func (x *BlockRequest) ProtoReflect() protoreflect.Message {
 	mi := &file_old_faithful_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -211,15 +205,14 @@ type BlockResponse struct {
 	BlockHeight       uint64         `protobuf:"varint,6,opt,name=block_height,json=blockHeight,proto3" json:"block_height,omitempty"`
 	Transactions      []*Transaction `protobuf:"bytes,7,rep,name=transactions,proto3" json:"transactions,omitempty"`
 	Rewards           []byte         `protobuf:"bytes,8,opt,name=rewards,proto3" json:"rewards,omitempty"` // protobuf or bincode (or empty)
+	NumPartitions     *uint64        `protobuf:"varint,9,opt,name=num_partitions,json=numPartitions,proto3,oneof" json:"num_partitions,omitempty"`
 }
 
 func (x *BlockResponse) Reset() {
 	*x = BlockResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_old_faithful_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_old_faithful_proto_msgTypes[3]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *BlockResponse) String() string {
@@ -230,7 +223,7 @@ func (*BlockResponse) ProtoMessage() {}
 
 func (x *BlockResponse) ProtoReflect() protoreflect.Message {
 	mi := &file_old_faithful_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -301,6 +294,13 @@ func (x *BlockResponse) GetRewards() []byte {
 	return nil
 }
 
+func (x *BlockResponse) GetNumPartitions() uint64 {
+	if x != nil && x.NumPartitions != nil {
+		return *x.NumPartitions
+	}
+	return 0
+}
+
 type BlockTimeRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -311,11 +311,9 @@ type BlockTimeRequest struct {
 
 func (x *BlockTimeRequest) Reset() {
 	*x = BlockTimeRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_old_faithful_proto_msgTypes[4]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_old_faithful_proto_msgTypes[4]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *BlockTimeRequest) String() string {
@@ -326,7 +324,7 @@ func (*BlockTimeRequest) ProtoMessage() {}
 
 func (x *BlockTimeRequest) ProtoReflect() protoreflect.Message {
 	mi := &file_old_faithful_proto_msgTypes[4]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -358,11 +356,9 @@ type BlockTimeResponse struct {
 
 func (x *BlockTimeResponse) Reset() {
 	*x = BlockTimeResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_old_faithful_proto_msgTypes[5]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_old_faithful_proto_msgTypes[5]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *BlockTimeResponse) String() string {
@@ -373,7 +369,7 @@ func (*BlockTimeResponse) ProtoMessage() {}
 
 func (x *BlockTimeResponse) ProtoReflect() protoreflect.Message {
 	mi := &file_old_faithful_proto_msgTypes[5]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -405,11 +401,9 @@ type TransactionRequest struct {
 
 func (x *TransactionRequest) Reset() {
 	*x = TransactionRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_old_faithful_proto_msgTypes[6]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_old_faithful_proto_msgTypes[6]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *TransactionRequest) String() string {
@@ -420,7 +414,7 @@ func (*TransactionRequest) ProtoMessage() {}
 
 func (x *TransactionRequest) ProtoReflect() protoreflect.Message {
 	mi := &file_old_faithful_proto_msgTypes[6]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -455,11 +449,9 @@ type TransactionResponse struct {
 
 func (x *TransactionResponse) Reset() {
 	*x = TransactionResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_old_faithful_proto_msgTypes[7]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_old_faithful_proto_msgTypes[7]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *TransactionResponse) String() string {
@@ -470,7 +462,7 @@ func (*TransactionResponse) ProtoMessage() {}
 
 func (x *TransactionResponse) ProtoReflect() protoreflect.Message {
 	mi := &file_old_faithful_proto_msgTypes[7]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -525,11 +517,9 @@ type Transaction struct {
 
 func (x *Transaction) Reset() {
 	*x = Transaction{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_old_faithful_proto_msgTypes[8]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_old_faithful_proto_msgTypes[8]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Transaction) String() string {
@@ -540,7 +530,7 @@ func (*Transaction) ProtoMessage() {}
 
 func (x *Transaction) ProtoReflect() protoreflect.Message {
 	mi := &file_old_faithful_proto_msgTypes[8]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -593,11 +583,9 @@ type GetRequest struct {
 
 func (x *GetRequest) Reset() {
 	*x = GetRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_old_faithful_proto_msgTypes[9]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_old_faithful_proto_msgTypes[9]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *GetRequest) String() string {
@@ -608,7 +596,7 @@ func (*GetRequest) ProtoMessage() {}
 
 func (x *GetRequest) ProtoReflect() protoreflect.Message {
 	mi := &file_old_faithful_proto_msgTypes[9]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -711,11 +699,9 @@ type GetResponse struct {
 
 func (x *GetResponse) Reset() {
 	*x = GetResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_old_faithful_proto_msgTypes[10]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_old_faithful_proto_msgTypes[10]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *GetResponse) String() string {
@@ -726,7 +712,7 @@ func (*GetResponse) ProtoMessage() {}
 
 func (x *GetResponse) ProtoReflect() protoreflect.Message {
 	mi := &file_old_faithful_proto_msgTypes[10]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -835,11 +821,9 @@ type GetResponseError struct {
 
 func (x *GetResponseError) Reset() {
 	*x = GetResponseError{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_old_faithful_proto_msgTypes[11]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_old_faithful_proto_msgTypes[11]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *GetResponseError) String() string {
@@ -850,7 +834,7 @@ func (*GetResponseError) ProtoMessage() {}
 
 func (x *GetResponseError) ProtoReflect() protoreflect.Message {
 	mi := &file_old_faithful_proto_msgTypes[11]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -879,6 +863,112 @@ func (x *GetResponseError) GetMessage() string {
 	return ""
 }
 
+type StreamBlocksRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	StartSlot uint64              `protobuf:"varint,1,opt,name=start_slot,json=startSlot,proto3" json:"start_slot,omitempty"`
+	EndSlot   *uint64             `protobuf:"varint,2,opt,name=end_slot,json=endSlot,proto3,oneof" json:"end_slot,omitempty"` // If not specified, continues indefinitely
+	Filter    *StreamBlocksFilter `protobuf:"bytes,3,opt,name=filter,proto3,oneof" json:"filter,omitempty"`
+}
+
+func (x *StreamBlocksRequest) Reset() {
+	*x = StreamBlocksRequest{}
+	mi := &file_old_faithful_proto_msgTypes[12]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *StreamBlocksRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*StreamBlocksRequest) ProtoMessage() {}
+
+func (x *StreamBlocksRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_old_faithful_proto_msgTypes[12]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use StreamBlocksRequest.ProtoReflect.Descriptor instead.
+func (*StreamBlocksRequest) Descriptor() ([]byte, []int) {
+	return file_old_faithful_proto_rawDescGZIP(), []int{12}
+}
+
+func (x *StreamBlocksRequest) GetStartSlot() uint64 {
+	if x != nil {
+		return x.StartSlot
+	}
+	return 0
+}
+
+func (x *StreamBlocksRequest) GetEndSlot() uint64 {
+	if x != nil && x.EndSlot != nil {
+		return *x.EndSlot
+	}
+	return 0
+}
+
+func (x *StreamBlocksRequest) GetFilter() *StreamBlocksFilter {
+	if x != nil {
+		return x.Filter
+	}
+	return nil
+}
+
+type StreamBlocksFilter struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	AccountInclude []string `protobuf:"bytes,1,rep,name=account_include,json=accountInclude,proto3" json:"account_include,omitempty"` // Filter blocks/txns mentioning these accounts
+}
+
+func (x *StreamBlocksFilter) Reset() {
+	*x = StreamBlocksFilter{}
+	mi := &file_old_faithful_proto_msgTypes[13]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *StreamBlocksFilter) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*StreamBlocksFilter) ProtoMessage() {}
+
+func (x *StreamBlocksFilter) ProtoReflect() protoreflect.Message {
+	mi := &file_old_faithful_proto_msgTypes[13]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use StreamBlocksFilter.ProtoReflect.Descriptor instead.
+func (*StreamBlocksFilter) Descriptor() ([]byte, []int) {
+	return file_old_faithful_proto_rawDescGZIP(), []int{13}
+}
+
+func (x *StreamBlocksFilter) GetAccountInclude() []string {
+	if x != nil {
+		return x.AccountInclude
+	}
+	return nil
+}
+
 var File_old_faithful_proto protoreflect.FileDescriptor
 
 var file_old_faithful_proto_rawDesc = []byte{
@@ -890,7 +980,7 @@ var file_old_faithful_proto_rawDesc = []byte{
 	0x6e, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x07, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e,
 	0x22, 0x22, 0x0a, 0x0c, 0x42, 0x6c, 0x6f, 0x63, 0x6b, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74,
 	0x12, 0x12, 0x0a, 0x04, 0x73, 0x6c, 0x6f, 0x74, 0x18, 0x01, 0x20, 0x01, 0x28, 0x04, 0x52, 0x04,
-	0x73, 0x6c, 0x6f, 0x74, 0x22, 0xab, 0x02, 0x0a, 0x0d, 0x42, 0x6c, 0x6f, 0x63, 0x6b, 0x52, 0x65,
+	0x73, 0x6c, 0x6f, 0x74, 0x22, 0xea, 0x02, 0x0a, 0x0d, 0x42, 0x6c, 0x6f, 0x63, 0x6b, 0x52, 0x65,
 	0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x2d, 0x0a, 0x12, 0x70, 0x72, 0x65, 0x76, 0x69, 0x6f,
 	0x75, 0x73, 0x5f, 0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x68, 0x61, 0x73, 0x68, 0x18, 0x01, 0x20, 0x01,
 	0x28, 0x0c, 0x52, 0x11, 0x70, 0x72, 0x65, 0x76, 0x69, 0x6f, 0x75, 0x73, 0x42, 0x6c, 0x6f, 0x63,
@@ -909,111 +999,135 @@ var file_old_faithful_proto_rawDesc = []byte{
 	0x72, 0x61, 0x6e, 0x73, 0x61, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x52, 0x0c, 0x74, 0x72, 0x61, 0x6e,
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+	0x2e, 0x4f, 0x6c, 0x64, 0x46, 0x61, 0x69, 0x74, 0x68, 0x66, 0x75, 0x6c, 0x2e, 0x53, 0x74, 0x72,
+	0x65, 0x61, 0x6d, 0x42, 0x6c, 0x6f, 0x63, 0x6b, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74,
+	0x1a, 0x1a, 0x2e, 0x4f, 0x6c, 0x64, 0x46, 0x61, 0x69, 0x74, 0x68, 0x66, 0x75, 0x6c, 0x2e, 0x42,
+	0x6c, 0x6f, 0x63, 0x6b, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x30, 0x01, 0x42, 0x4e,
+	0x5a, 0x4c, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x72, 0x70, 0x63,
+	0x70, 0x6f, 0x6f, 0x6c, 0x2f, 0x79, 0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x73, 0x74, 0x6f, 0x6e, 0x65,
+	0x2d, 0x66, 0x61, 0x69, 0x74, 0x68, 0x66, 0x75, 0x6c, 0x2f, 0x6f, 0x6c, 0x64, 0x2d, 0x66, 0x61,
+	0x69, 0x74, 0x68, 0x66, 0x75, 0x6c, 0x2d, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x3b, 0x6f, 0x6c, 0x64,
+	0x5f, 0x66, 0x61, 0x69, 0x74, 0x68, 0x66, 0x75, 0x6c, 0x5f, 0x67, 0x72, 0x70, 0x63, 0x62, 0x06,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1029,7 +1143,7 @@ func file_old_faithful_proto_rawDescGZIP() []byte {
 }
 
 var file_old_faithful_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
-var file_old_faithful_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
+var file_old_faithful_proto_msgTypes = make([]protoimpl.MessageInfo, 14)
 var file_old_faithful_proto_goTypes = []any{
 	(GetResponseErrorCode)(0),   // 0: OldFaithful.GetResponseErrorCode
 	(*VersionRequest)(nil),      // 1: OldFaithful.VersionRequest
@@ -1044,6 +1158,8 @@ var file_old_faithful_proto_goTypes = []any{
 	(*GetRequest)(nil),          // 10: OldFaithful.GetRequest
 	(*GetResponse)(nil),         // 11: OldFaithful.GetResponse
 	(*GetResponseError)(nil),    // 12: OldFaithful.GetResponseError
+	(*StreamBlocksRequest)(nil), // 13: OldFaithful.StreamBlocksRequest
+	(*StreamBlocksFilter)(nil),  // 14: OldFaithful.StreamBlocksFilter
 }
 var file_old_faithful_proto_depIdxs = []int32{
 	9,  // 0: OldFaithful.BlockResponse.transactions:type_name -> OldFaithful.Transaction
@@ -1058,21 +1174,24 @@ var file_old_faithful_proto_depIdxs = []int32{
 	4,  // 9: OldFaithful.GetResponse.block:type_name -> OldFaithful.BlockResponse
 	8,  // 10: OldFaithful.GetResponse.transaction:type_name -> OldFaithful.TransactionResponse
 	0,  // 11: OldFaithful.GetResponseError.code:type_name -> OldFaithful.GetResponseErrorCode
-	1,  // 12: OldFaithful.OldFaithful.GetVersion:input_type -> OldFaithful.VersionRequest
-	3,  // 13: OldFaithful.OldFaithful.GetBlock:input_type -> OldFaithful.BlockRequest
-	5,  // 14: OldFaithful.OldFaithful.GetBlockTime:input_type -> OldFaithful.BlockTimeRequest
-	7,  // 15: OldFaithful.OldFaithful.GetTransaction:input_type -> OldFaithful.TransactionRequest
-	10, // 16: OldFaithful.OldFaithful.Get:input_type -> OldFaithful.GetRequest
-	2,  // 17: OldFaithful.OldFaithful.GetVersion:output_type -> OldFaithful.VersionResponse
-	4,  // 18: OldFaithful.OldFaithful.GetBlock:output_type -> OldFaithful.BlockResponse
-	6,  // 19: OldFaithful.OldFaithful.GetBlockTime:output_type -> OldFaithful.BlockTimeResponse
-	8,  // 20: OldFaithful.OldFaithful.GetTransaction:output_type -> OldFaithful.TransactionResponse
-	11, // 21: OldFaithful.OldFaithful.Get:output_type -> OldFaithful.GetResponse
-	17, // [17:22] is the sub-list for method output_type
-	12, // [12:17] is the sub-list for method input_type
-	12, // [12:12] is the sub-list for extension type_name
-	12, // [12:12] is the sub-list for extension extendee
-	0,  // [0:12] is the sub-list for field type_name
+	14, // 12: OldFaithful.StreamBlocksRequest.filter:type_name -> OldFaithful.StreamBlocksFilter
+	1,  // 13: OldFaithful.OldFaithful.GetVersion:input_type -> OldFaithful.VersionRequest
+	3,  // 14: OldFaithful.OldFaithful.GetBlock:input_type -> OldFaithful.BlockRequest
+	5,  // 15: OldFaithful.OldFaithful.GetBlockTime:input_type -> OldFaithful.BlockTimeRequest
+	7,  // 16: OldFaithful.OldFaithful.GetTransaction:input_type -> OldFaithful.TransactionRequest
+	10, // 17: OldFaithful.OldFaithful.Get:input_type -> OldFaithful.GetRequest
+	13, // 18: OldFaithful.OldFaithful.StreamBlocks:input_type -> OldFaithful.StreamBlocksRequest
+	2,  // 19: OldFaithful.OldFaithful.GetVersion:output_type -> OldFaithful.VersionResponse
+	4,  // 20: OldFaithful.OldFaithful.GetBlock:output_type -> OldFaithful.BlockResponse
+	6,  // 21: OldFaithful.OldFaithful.GetBlockTime:output_type -> OldFaithful.BlockTimeResponse
+	8,  // 22: OldFaithful.OldFaithful.GetTransaction:output_type -> OldFaithful.TransactionResponse
+	11, // 23: OldFaithful.OldFaithful.Get:output_type -> OldFaithful.GetResponse
+	4,  // 24: OldFaithful.OldFaithful.StreamBlocks:output_type -> OldFaithful.BlockResponse
+	19, // [19:25] is the sub-list for method output_type
+	13, // [13:19] is the sub-list for method input_type
+	13, // [13:13] is the sub-list for extension type_name
+	13, // [13:13] is the sub-list for extension extendee
+	0,  // [0:13] is the sub-list for field type_name
 }
 
 func init() { file_old_faithful_proto_init() }
@@ -1080,152 +1199,7 @@ func file_old_faithful_proto_init() {
 	if File_old_faithful_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_old_faithful_proto_msgTypes[0].Exporter = func(v any, i int) any {
-			switch v := v.(*VersionRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_old_faithful_proto_msgTypes[1].Exporter = func(v any, i int) any {
-			switch v := v.(*VersionResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_old_faithful_proto_msgTypes[2].Exporter = func(v any, i int) any {
-			switch v := v.(*BlockRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_old_faithful_proto_msgTypes[3].Exporter = func(v any, i int) any {
-			switch v := v.(*BlockResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_old_faithful_proto_msgTypes[4].Exporter = func(v any, i int) any {
-			switch v := v.(*BlockTimeRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_old_faithful_proto_msgTypes[5].Exporter = func(v any, i int) any {
-			switch v := v.(*BlockTimeResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_old_faithful_proto_msgTypes[6].Exporter = func(v any, i int) any {
-			switch v := v.(*TransactionRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_old_faithful_proto_msgTypes[7].Exporter = func(v any, i int) any {
-			switch v := v.(*TransactionResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_old_faithful_proto_msgTypes[8].Exporter = func(v any, i int) any {
-			switch v := v.(*Transaction); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_old_faithful_proto_msgTypes[9].Exporter = func(v any, i int) any {
-			switch v := v.(*GetRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_old_faithful_proto_msgTypes[10].Exporter = func(v any, i int) any {
-			switch v := v.(*GetResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_old_faithful_proto_msgTypes[11].Exporter = func(v any, i int) any {
-			switch v := v.(*GetResponseError); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
+	file_old_faithful_proto_msgTypes[3].OneofWrappers = []any{}
 	file_old_faithful_proto_msgTypes[7].OneofWrappers = []any{}
 	file_old_faithful_proto_msgTypes[8].OneofWrappers = []any{}
 	file_old_faithful_proto_msgTypes[9].OneofWrappers = []any{
@@ -1241,13 +1215,14 @@ func file_old_faithful_proto_init() {
 		(*GetResponse_Block)(nil),
 		(*GetResponse_Transaction)(nil),
 	}
+	file_old_faithful_proto_msgTypes[12].OneofWrappers = []any{}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_old_faithful_proto_rawDesc,
 			NumEnums:      1,
-			NumMessages:   12,
+			NumMessages:   14,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/old-faithful-proto/old-faithful-grpc/old-faithful_grpc.pb.go b/old-faithful-proto/old-faithful-grpc/old-faithful_grpc.pb.go
index 29351c4c..309884be 100644
--- a/old-faithful-proto/old-faithful-grpc/old-faithful_grpc.pb.go
+++ b/old-faithful-proto/old-faithful-grpc/old-faithful_grpc.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.4.0
-// - protoc             v5.27.1
+// - protoc-gen-go-grpc v1.5.1
+// - protoc             v5.28.3
 // source: old-faithful.proto
 
 package old_faithful_grpc
@@ -15,8 +15,8 @@ import (
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the grpc package it is being compiled against.
-// Requires gRPC-Go v1.62.0 or later.
-const _ = grpc.SupportPackageIsVersion8
+// Requires gRPC-Go v1.64.0 or later.
+const _ = grpc.SupportPackageIsVersion9
 
 const (
 	OldFaithful_GetVersion_FullMethodName     = "/OldFaithful.OldFaithful/GetVersion"
@@ -24,6 +24,7 @@ const (
 	OldFaithful_GetBlockTime_FullMethodName   = "/OldFaithful.OldFaithful/GetBlockTime"
 	OldFaithful_GetTransaction_FullMethodName = "/OldFaithful.OldFaithful/GetTransaction"
 	OldFaithful_Get_FullMethodName            = "/OldFaithful.OldFaithful/Get"
+	OldFaithful_StreamBlocks_FullMethodName   = "/OldFaithful.OldFaithful/StreamBlocks"
 )
 
 // OldFaithfulClient is the client API for OldFaithful service.
@@ -34,7 +35,8 @@ type OldFaithfulClient interface {
 	GetBlock(ctx context.Context, in *BlockRequest, opts ...grpc.CallOption) (*BlockResponse, error)
 	GetBlockTime(ctx context.Context, in *BlockTimeRequest, opts ...grpc.CallOption) (*BlockTimeResponse, error)
 	GetTransaction(ctx context.Context, in *TransactionRequest, opts ...grpc.CallOption) (*TransactionResponse, error)
-	Get(ctx context.Context, opts ...grpc.CallOption) (OldFaithful_GetClient, error)
+	Get(ctx context.Context, opts ...grpc.CallOption) (grpc.BidiStreamingClient[GetRequest, GetResponse], error)
+	StreamBlocks(ctx context.Context, in *StreamBlocksRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[BlockResponse], error)
 }
 
 type oldFaithfulClient struct {
@@ -85,53 +87,57 @@ func (c *oldFaithfulClient) GetTransaction(ctx context.Context, in *TransactionR
 	return out, nil
 }
 
-func (c *oldFaithfulClient) Get(ctx context.Context, opts ...grpc.CallOption) (OldFaithful_GetClient, error) {
+func (c *oldFaithfulClient) Get(ctx context.Context, opts ...grpc.CallOption) (grpc.BidiStreamingClient[GetRequest, GetResponse], error) {
 	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	stream, err := c.cc.NewStream(ctx, &OldFaithful_ServiceDesc.Streams[0], OldFaithful_Get_FullMethodName, cOpts...)
 	if err != nil {
 		return nil, err
 	}
-	x := &oldFaithfulGetClient{ClientStream: stream}
+	x := &grpc.GenericClientStream[GetRequest, GetResponse]{ClientStream: stream}
 	return x, nil
 }
 
-type OldFaithful_GetClient interface {
-	Send(*GetRequest) error
-	Recv() (*GetResponse, error)
-	grpc.ClientStream
-}
-
-type oldFaithfulGetClient struct {
-	grpc.ClientStream
-}
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type OldFaithful_GetClient = grpc.BidiStreamingClient[GetRequest, GetResponse]
 
-func (x *oldFaithfulGetClient) Send(m *GetRequest) error {
-	return x.ClientStream.SendMsg(m)
-}
-
-func (x *oldFaithfulGetClient) Recv() (*GetResponse, error) {
-	m := new(GetResponse)
-	if err := x.ClientStream.RecvMsg(m); err != nil {
+func (c *oldFaithfulClient) StreamBlocks(ctx context.Context, in *StreamBlocksRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[BlockResponse], error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	stream, err := c.cc.NewStream(ctx, &OldFaithful_ServiceDesc.Streams[1], OldFaithful_StreamBlocks_FullMethodName, cOpts...)
+	if err != nil {
 		return nil, err
 	}
-	return m, nil
+	x := &grpc.GenericClientStream[StreamBlocksRequest, BlockResponse]{ClientStream: stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
 }
 
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type OldFaithful_StreamBlocksClient = grpc.ServerStreamingClient[BlockResponse]
+
 // OldFaithfulServer is the server API for OldFaithful service.
 // All implementations must embed UnimplementedOldFaithfulServer
-// for forward compatibility
+// for forward compatibility.
 type OldFaithfulServer interface {
 	GetVersion(context.Context, *VersionRequest) (*VersionResponse, error)
 	GetBlock(context.Context, *BlockRequest) (*BlockResponse, error)
 	GetBlockTime(context.Context, *BlockTimeRequest) (*BlockTimeResponse, error)
 	GetTransaction(context.Context, *TransactionRequest) (*TransactionResponse, error)
-	Get(OldFaithful_GetServer) error
+	Get(grpc.BidiStreamingServer[GetRequest, GetResponse]) error
+	StreamBlocks(*StreamBlocksRequest, grpc.ServerStreamingServer[BlockResponse]) error
 	mustEmbedUnimplementedOldFaithfulServer()
 }
 
-// UnimplementedOldFaithfulServer must be embedded to have forward compatible implementations.
-type UnimplementedOldFaithfulServer struct {
-}
+// UnimplementedOldFaithfulServer must be embedded to have
+// forward compatible implementations.
+//
+// NOTE: this should be embedded by value instead of pointer to avoid a nil
+// pointer dereference when methods are called.
+type UnimplementedOldFaithfulServer struct{}
 
 func (UnimplementedOldFaithfulServer) GetVersion(context.Context, *VersionRequest) (*VersionResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method GetVersion not implemented")
@@ -145,10 +151,14 @@ func (UnimplementedOldFaithfulServer) GetBlockTime(context.Context, *BlockTimeRe
 func (UnimplementedOldFaithfulServer) GetTransaction(context.Context, *TransactionRequest) (*TransactionResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method GetTransaction not implemented")
 }
-func (UnimplementedOldFaithfulServer) Get(OldFaithful_GetServer) error {
+func (UnimplementedOldFaithfulServer) Get(grpc.BidiStreamingServer[GetRequest, GetResponse]) error {
 	return status.Errorf(codes.Unimplemented, "method Get not implemented")
 }
+func (UnimplementedOldFaithfulServer) StreamBlocks(*StreamBlocksRequest, grpc.ServerStreamingServer[BlockResponse]) error {
+	return status.Errorf(codes.Unimplemented, "method StreamBlocks not implemented")
+}
 func (UnimplementedOldFaithfulServer) mustEmbedUnimplementedOldFaithfulServer() {}
+func (UnimplementedOldFaithfulServer) testEmbeddedByValue()                     {}
 
 // UnsafeOldFaithfulServer may be embedded to opt out of forward compatibility for this service.
 // Use of this interface is not recommended, as added methods to OldFaithfulServer will
@@ -158,6 +168,13 @@ type UnsafeOldFaithfulServer interface {
 }
 
 func RegisterOldFaithfulServer(s grpc.ServiceRegistrar, srv OldFaithfulServer) {
+	// If the following call pancis, it indicates UnimplementedOldFaithfulServer was
+	// embedded by pointer and is nil.  This will cause panics if an
+	// unimplemented method is ever invoked, so we test this at initialization
+	// time to prevent it from happening at runtime later due to I/O.
+	if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
+		t.testEmbeddedByValue()
+	}
 	s.RegisterService(&OldFaithful_ServiceDesc, srv)
 }
 
@@ -234,31 +251,23 @@ func _OldFaithful_GetTransaction_Handler(srv interface{}, ctx context.Context, d
 }
 
 func _OldFaithful_Get_Handler(srv interface{}, stream grpc.ServerStream) error {
-	return srv.(OldFaithfulServer).Get(&oldFaithfulGetServer{ServerStream: stream})
+	return srv.(OldFaithfulServer).Get(&grpc.GenericServerStream[GetRequest, GetResponse]{ServerStream: stream})
 }
 
-type OldFaithful_GetServer interface {
-	Send(*GetResponse) error
-	Recv() (*GetRequest, error)
-	grpc.ServerStream
-}
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type OldFaithful_GetServer = grpc.BidiStreamingServer[GetRequest, GetResponse]
 
-type oldFaithfulGetServer struct {
-	grpc.ServerStream
-}
-
-func (x *oldFaithfulGetServer) Send(m *GetResponse) error {
-	return x.ServerStream.SendMsg(m)
-}
-
-func (x *oldFaithfulGetServer) Recv() (*GetRequest, error) {
-	m := new(GetRequest)
-	if err := x.ServerStream.RecvMsg(m); err != nil {
-		return nil, err
+func _OldFaithful_StreamBlocks_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(StreamBlocksRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
 	}
-	return m, nil
+	return srv.(OldFaithfulServer).StreamBlocks(m, &grpc.GenericServerStream[StreamBlocksRequest, BlockResponse]{ServerStream: stream})
 }
 
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type OldFaithful_StreamBlocksServer = grpc.ServerStreamingServer[BlockResponse]
+
 // OldFaithful_ServiceDesc is the grpc.ServiceDesc for OldFaithful service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -290,6 +299,11 @@ var OldFaithful_ServiceDesc = grpc.ServiceDesc{
 			ServerStreams: true,
 			ClientStreams: true,
 		},
+		{
+			StreamName:    "StreamBlocks",
+			Handler:       _OldFaithful_StreamBlocks_Handler,
+			ServerStreams: true,
+		},
 	},
 	Metadata: "old-faithful.proto",
 }
diff --git a/old-faithful-proto/proto/old-faithful.proto b/old-faithful-proto/proto/old-faithful.proto
index 1c636ab9..de328a7e 100644
--- a/old-faithful-proto/proto/old-faithful.proto
+++ b/old-faithful-proto/proto/old-faithful.proto
@@ -11,6 +11,8 @@ service OldFaithful {
   rpc GetTransaction(TransactionRequest) returns (TransactionResponse);
 
   rpc Get(stream GetRequest) returns (stream GetResponse);
+
+  rpc StreamBlocks(StreamBlocksRequest) returns (stream BlockResponse);
 }
 
 message VersionRequest {}
@@ -90,3 +92,14 @@ message GetResponseError {
   GetResponseErrorCode code = 1;
   string message = 2;
 }
+
+
+message StreamBlocksRequest {
+  uint64 start_slot = 1;
+  optional uint64 end_slot = 2;  // If not specified, continues indefinitely
+  optional StreamBlocksFilter filter = 3;
+}
+
+message StreamBlocksFilter {
+  repeated string account_include = 1;  // Filter blocks/txns mentioning these accounts
+}