diff --git a/observer/all_channels_blocks_common.go b/observer/all_channels_blocks_common.go
index 761649b..a6e3b9c 100644
--- a/observer/all_channels_blocks_common.go
+++ b/observer/all_channels_blocks_common.go
@@ -1,8 +1,6 @@
 package observer
 
 import (
-	"context"
-
 	"github.com/hyperledger/fabric-protos-go/common"
 
 	"github.com/s7techlab/hlf-sdk-go/api"
@@ -10,9 +8,6 @@ import (
 
 type AllChannelBlocksCommon struct {
 	*AllChannelsBlocks[*common.Block]
-
-	commonBlocks chan *CommonBlock
-	isWork       bool
 }
 
 func NewAllChannelBlocksCommon(peerChannels PeerChannelsGetter, blocksDeliver api.BlocksDeliverer, opts ...AllChannelsBlocksOpt) *AllChannelBlocksCommon {
@@ -22,39 +17,3 @@ func NewAllChannelBlocksCommon(peerChannels PeerChannelsGetter, blocksDeliver ap
 
 	return &AllChannelBlocksCommon{AllChannelsBlocks: allChsBlocks}
 }
-
-func (a *AllChannelBlocksCommon) Observe(ctx context.Context) <-chan *CommonBlock {
-	if a.isWork {
-		return a.commonBlocks
-	}
-
-	a.commonBlocks = make(chan *CommonBlock)
-	go func() {
-		a.isWork = true
-		defer func() {
-			close(a.commonBlocks)
-			a.isWork = false
-		}()
-
-		blocks := a.AllChannelsBlocks.Observe(ctx)
-
-		for {
-			select {
-			case <-ctx.Done():
-				return
-
-			case cb, ok := <-blocks:
-				if !ok {
-					return
-				}
-				if cb == nil {
-					continue
-				}
-
-				a.commonBlocks <- &CommonBlock{Block: cb}
-			}
-		}
-	}()
-
-	return a.commonBlocks
-}
diff --git a/observer/all_channels_blocks_common_test.go b/observer/all_channels_blocks_common_test.go
index df6b1e7..94277a4 100644
--- a/observer/all_channels_blocks_common_test.go
+++ b/observer/all_channels_blocks_common_test.go
@@ -19,7 +19,7 @@ var (
 
 	peerChannelsMockForCommon *observer.PeerChannelsMock
 	allChannelBlocksCommon    *observer.AllChannelBlocksCommon
-	commonBlocks              <-chan *observer.CommonBlock
+	commonBlocks              <-chan *observer.Block[*common.Block]
 
 	peerChannelsMockConcurrentlyForCommon *observer.PeerChannelsMock
 	allChannelBlocksConcurrentlyCommon    *observer.AllChannelBlocksCommon
@@ -87,7 +87,7 @@ var _ = Describe("All channels blocks common", func() {
 				Expect(b.Channel).To(Equal(curBlockChannel))
 
 				blockNum := channelsBlocksHeights[curBlockChannel]
-				Expect(b.Block.Block.Header.Number).To(Equal(blockNum))
+				Expect(b.Block.Header.Number).To(Equal(blockNum))
 
 				channelsBlocksHeights[curBlockChannel]++
 
diff --git a/observer/all_channels_blocks_parsed.go b/observer/all_channels_blocks_parsed.go
index 0a489e9..a4b6e6e 100644
--- a/observer/all_channels_blocks_parsed.go
+++ b/observer/all_channels_blocks_parsed.go
@@ -1,17 +1,12 @@
 package observer
 
 import (
-	"context"
-
 	"github.com/s7techlab/hlf-sdk-go/api"
 	hlfproto "github.com/s7techlab/hlf-sdk-go/block"
 )
 
 type AllChannelBlocksParsed struct {
 	*AllChannelsBlocks[*hlfproto.Block]
-
-	parsedBlocks chan *ParsedBlock
-	isWork       bool
 }
 
 func NewAllChannelBlocksParsed(peerChannels PeerChannelsGetter, blocksDeliver api.ParsedBlocksDeliverer, opts ...AllChannelsBlocksOpt) *AllChannelBlocksParsed {
@@ -21,39 +16,3 @@ func NewAllChannelBlocksParsed(peerChannels PeerChannelsGetter, blocksDeliver ap
 
 	return &AllChannelBlocksParsed{AllChannelsBlocks: allChsBlocks}
 }
-
-func (a *AllChannelBlocksParsed) Observe(ctx context.Context) <-chan *ParsedBlock {
-	if a.isWork {
-		return a.parsedBlocks
-	}
-
-	a.parsedBlocks = make(chan *ParsedBlock)
-	go func() {
-		a.isWork = true
-		defer func() {
-			close(a.parsedBlocks)
-			a.isWork = false
-		}()
-
-		blocks := a.AllChannelsBlocks.Observe(ctx)
-
-		for {
-			select {
-			case <-ctx.Done():
-				return
-
-			case cb, ok := <-blocks:
-				if !ok {
-					return
-				}
-				if cb == nil {
-					continue
-				}
-
-				a.parsedBlocks <- &ParsedBlock{Block: cb}
-			}
-		}
-	}()
-
-	return a.parsedBlocks
-}
diff --git a/observer/all_channels_blocks_parsed_test.go b/observer/all_channels_blocks_parsed_test.go
index fa3c28c..80ca6f3 100644
--- a/observer/all_channels_blocks_parsed_test.go
+++ b/observer/all_channels_blocks_parsed_test.go
@@ -16,7 +16,7 @@ import (
 var (
 	peerChannelsMockForParsed *observer.PeerChannelsMock
 	allChannelBlocksParsed    *observer.AllChannelBlocksParsed
-	parsedBlocks              <-chan *observer.ParsedBlock
+	parsedBlocks              <-chan *observer.Block[*hlfproto.Block]
 
 	peerChannelsMockConcurrentlyForParsed *observer.PeerChannelsMock
 	allChannelBlocksConcurrentlyParsed    *observer.AllChannelBlocksParsed
@@ -84,7 +84,7 @@ var _ = Describe("All channels blocks parsed", func() {
 				Expect(b.Channel).To(Equal(curBlockChannel))
 
 				blockNum := channelsBlocksHeights[curBlockChannel]
-				Expect(b.Block.Block.Header.Number).To(Equal(blockNum))
+				Expect(b.Block.Header.Number).To(Equal(blockNum))
 
 				channelsBlocksHeights[curBlockChannel]++
 
diff --git a/observer/block.go b/observer/block.go
index 3d4d0be..39394f6 100644
--- a/observer/block.go
+++ b/observer/block.go
@@ -1,20 +1,6 @@
 package observer
 
-import (
-	"github.com/hyperledger/fabric-protos-go/common"
-
-	hlfproto "github.com/s7techlab/hlf-sdk-go/block"
-)
-
 type Block[T any] struct {
 	Channel string
 	Block   T
 }
-
-type CommonBlock struct {
-	*Block[*common.Block]
-}
-
-type ParsedBlock struct {
-	*Block[*hlfproto.Block]
-}
diff --git a/observer/stream.go b/observer/stream.go
index bd764a1..90f508c 100644
--- a/observer/stream.go
+++ b/observer/stream.go
@@ -4,20 +4,8 @@ import (
 	"context"
 	"strconv"
 	"sync"
-
-	"github.com/hyperledger/fabric-protos-go/common"
-
-	hlfproto "github.com/s7techlab/hlf-sdk-go/block"
 )
 
-type CommonBlocksStream struct {
-	*BlocksStream[*common.Block]
-}
-
-type ParsedBlocksStream struct {
-	*BlocksStream[*hlfproto.Block]
-}
-
 type Stream[T any] interface {
 	Subscribe() (ch chan *Block[T], closer func())
 }