diff --git a/modules/core/04-channel/v2/types/channel.go b/modules/core/04-channel/v2/types/channel.go
index 3a45be384fb..f4ab5b2afe4 100644
--- a/modules/core/04-channel/v2/types/channel.go
+++ b/modules/core/04-channel/v2/types/channel.go
@@ -32,3 +32,20 @@ func (c Channel) Validate() error {
 
 	return nil
 }
+
+// NewIdentifiedChannel creates a new IdentifiedChannel instance
+func NewIdentifiedChannel(channelID string, channel Channel) IdentifiedChannel {
+	return IdentifiedChannel{
+		Channel:   channel,
+		ChannelId: channelID,
+	}
+}
+
+// ValidateBasic performs a basic validation of the identifiers and channel fields.
+func (ic IdentifiedChannel) ValidateBasic() error {
+	if err := host.ChannelIdentifierValidator(ic.ChannelId); err != nil {
+		return errorsmod.Wrap(err, "invalid channel ID")
+	}
+
+	return ic.Channel.Validate()
+}
diff --git a/modules/core/04-channel/v2/types/genesis.go b/modules/core/04-channel/v2/types/genesis.go
new file mode 100644
index 00000000000..3b567f97c87
--- /dev/null
+++ b/modules/core/04-channel/v2/types/genesis.go
@@ -0,0 +1,134 @@
+package types
+
+import (
+	"errors"
+	"fmt"
+
+	channeltypesv1 "github.com/cosmos/ibc-go/v9/modules/core/04-channel/types"
+	host "github.com/cosmos/ibc-go/v9/modules/core/24-host"
+)
+
+// NewPacketState creates a new PacketState instance.
+func NewPacketState(channelID string, sequence uint64, data []byte) PacketState {
+	return PacketState{
+		ChannelId: channelID,
+		Sequence:  sequence,
+		Data:      data,
+	}
+}
+
+// Validate performs basic validation of fields returning an error upon any failure.
+func (ps PacketState) Validate() error {
+	if ps.Data == nil {
+		return errors.New("data bytes cannot be nil")
+	}
+	return validateGenFields(ps.ChannelId, ps.Sequence)
+}
+
+// NewPacketSequence creates a new PacketSequences instance.
+func NewPacketSequence(channelID string, sequence uint64) PacketSequence {
+	return PacketSequence{
+		ChannelId: channelID,
+		Sequence:  sequence,
+	}
+}
+
+// Validate performs basic validation of fields returning an error upon any failure.
+func (ps PacketSequence) Validate() error {
+	return validateGenFields(ps.ChannelId, ps.Sequence)
+}
+
+// NewGenesisState creates a GenesisState instance.
+func NewGenesisState(
+	channels []IdentifiedChannel, acks, receipts, commitments []PacketState,
+	sendSeqs []PacketSequence, nextChannelSequence uint64,
+) GenesisState {
+	return GenesisState{
+		Channels:            channels,
+		Acknowledgements:    acks,
+		Receipts:            receipts,
+		Commitments:         commitments,
+		SendSequences:       sendSeqs,
+		NextChannelSequence: nextChannelSequence,
+	}
+}
+
+// DefaultGenesisState returns the ibc channel v2 submodule's default genesis state.
+func DefaultGenesisState() GenesisState {
+	return GenesisState{
+		Channels:            []IdentifiedChannel{},
+		Acknowledgements:    []PacketState{},
+		Receipts:            []PacketState{},
+		Commitments:         []PacketState{},
+		SendSequences:       []PacketSequence{},
+		NextChannelSequence: 0,
+	}
+}
+
+// Validate performs basic genesis state validation returning an error upon any failure.
+func (gs GenesisState) Validate() error {
+	// keep track of the max sequence to ensure it is less than
+	// the next sequence used in creating channel identifiers.
+	var maxSequence uint64
+
+	for i, channel := range gs.Channels {
+		sequence, err := channeltypesv1.ParseChannelSequence(channel.ChannelId)
+		if err != nil {
+			return err
+		}
+
+		if sequence > maxSequence {
+			maxSequence = sequence
+		}
+
+		if err := channel.ValidateBasic(); err != nil {
+			return fmt.Errorf("invalid channel %v channel index %d: %w", channel, i, err)
+		}
+	}
+
+	if maxSequence != 0 && maxSequence >= gs.NextChannelSequence {
+		return fmt.Errorf("next channel sequence %d must be greater than maximum sequence used in channel identifier %d", gs.NextChannelSequence, maxSequence)
+	}
+
+	for i, ack := range gs.Acknowledgements {
+		if err := ack.Validate(); err != nil {
+			return fmt.Errorf("invalid acknowledgement %v ack index %d: %w", ack, i, err)
+		}
+		if len(ack.Data) == 0 {
+			return fmt.Errorf("invalid acknowledgement %v ack index %d: data bytes cannot be empty", ack, i)
+		}
+	}
+
+	for i, receipt := range gs.Receipts {
+		if err := receipt.Validate(); err != nil {
+			return fmt.Errorf("invalid acknowledgement %v ack index %d: %w", receipt, i, err)
+		}
+	}
+
+	for i, commitment := range gs.Commitments {
+		if err := commitment.Validate(); err != nil {
+			return fmt.Errorf("invalid commitment %v index %d: %w", commitment, i, err)
+		}
+		if len(commitment.Data) == 0 {
+			return fmt.Errorf("invalid acknowledgement %v ack index %d: data bytes cannot be empty", commitment, i)
+		}
+	}
+
+	for i, ss := range gs.SendSequences {
+		if err := ss.Validate(); err != nil {
+			return fmt.Errorf("invalid send sequence %v index %d: %w", ss, i, err)
+		}
+	}
+
+	return nil
+}
+
+func validateGenFields(channelID string, sequence uint64) error {
+	if err := host.ChannelIdentifierValidator(channelID); err != nil {
+		return fmt.Errorf("invalid channel Id: %w", err)
+	}
+	if sequence == 0 {
+		return errors.New("sequence cannot be 0")
+	}
+	return nil
+}
diff --git a/modules/core/04-channel/v2/types/genesis.pb.go b/modules/core/04-channel/v2/types/genesis.pb.go
index 2528c89d61f..ea9c321819f 100644
--- a/modules/core/04-channel/v2/types/genesis.pb.go
+++ b/modules/core/04-channel/v2/types/genesis.pb.go
@@ -23,13 +23,15 @@ var _ = math.Inf
 // proto package needs to be updated.
 const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
 
-// GenesisState defines the ibc channel submodule's genesis state.
+// GenesisState defines the ibc channel/v2 submodule's genesis state.
 type GenesisState struct {
 	Channels         []IdentifiedChannel `protobuf:"bytes,1,rep,name=channels,proto3,casttype=IdentifiedChannel" json:"channels"`
 	Acknowledgements []PacketState       `protobuf:"bytes,2,rep,name=acknowledgements,proto3" json:"acknowledgements"`
 	Commitments      []PacketState       `protobuf:"bytes,3,rep,name=commitments,proto3" json:"commitments"`
 	Receipts         []PacketState       `protobuf:"bytes,4,rep,name=receipts,proto3" json:"receipts"`
 	SendSequences    []PacketSequence    `protobuf:"bytes,5,rep,name=send_sequences,json=sendSequences,proto3" json:"send_sequences"`
+	// the sequence for the next generated channel identifier
+	NextChannelSequence uint64 `protobuf:"varint,6,opt,name=next_channel_sequence,json=nextChannelSequence,proto3" json:"next_channel_sequence,omitempty"`
 }
 
 func (m *GenesisState) Reset()         { *m = GenesisState{} }
@@ -100,6 +102,13 @@ func (m *GenesisState) GetSendSequences() []PacketSequence {
 	return nil
 }
 
+func (m *GenesisState) GetNextChannelSequence() uint64 {
+	if m != nil {
+		return m.NextChannelSequence
+	}
+	return 0
+}
+
 // PacketState defines the generic type necessary to retrieve and store
 // packet commitments, acknowledgements, and receipts.
 // Caller is responsible for knowing the context necessary to interpret this
@@ -210,33 +219,35 @@ func init() {
 func init() { proto.RegisterFile("ibc/core/channel/v2/genesis.proto", fileDescriptor_b5d374f126f051c3) }
 
 var fileDescriptor_b5d374f126f051c3 = []byte{
-	// 414 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xa4, 0x92, 0xbf, 0xae, 0xd3, 0x30,
-	0x14, 0xc6, 0xe3, 0x9b, 0x80, 0x7a, 0xdd, 0xcb, 0x15, 0x18, 0x86, 0x50, 0x89, 0x34, 0x14, 0x09,
-	0x65, 0xb9, 0x31, 0x2a, 0x2c, 0x20, 0xa6, 0x30, 0x40, 0xc5, 0x52, 0x05, 0x89, 0x01, 0x09, 0x55,
-	0x89, 0x7d, 0x48, 0xad, 0x36, 0x76, 0xa9, 0xdd, 0x22, 0xde, 0x80, 0x91, 0x47, 0x80, 0xb7, 0xe9,
-	0xd8, 0x91, 0xa9, 0x42, 0xed, 0x5b, 0x30, 0xa1, 0xfc, 0x69, 0x55, 0xd4, 0x0a, 0xa9, 0xba, 0x9b,
-	0x7d, 0xfc, 0x7d, 0xbf, 0x9f, 0x87, 0x83, 0x1f, 0x8a, 0x94, 0x51, 0xa6, 0xa6, 0x40, 0xd9, 0x30,
-	0x91, 0x12, 0xc6, 0x74, 0xde, 0xa5, 0x19, 0x48, 0xd0, 0x42, 0x87, 0x93, 0xa9, 0x32, 0x8a, 0xdc,
-	0x15, 0x29, 0x0b, 0x8b, 0x48, 0x58, 0x47, 0xc2, 0x79, 0xb7, 0x75, 0x2f, 0x53, 0x99, 0x2a, 0xdf,
-	0x69, 0x71, 0xaa, 0xa2, 0xad, 0xa3, 0xb4, 0x6d, 0xab, 0x8c, 0x74, 0x7e, 0xda, 0xf8, 0xe2, 0x75,
-	0xc5, 0x7f, 0x67, 0x12, 0x03, 0xe4, 0x23, 0x6e, 0xd4, 0x09, 0xed, 0x22, 0xdf, 0x0e, 0x9a, 0xdd,
-	0xc7, 0xe1, 0x11, 0x63, 0xd8, 0xe3, 0x20, 0x8d, 0xf8, 0x24, 0x80, 0xbf, 0xaa, 0x86, 0xd1, 0xfd,
-	0xc5, 0xaa, 0x6d, 0xfd, 0x59, 0xb5, 0xef, 0x1c, 0x3c, 0xc5, 0x3b, 0x24, 0x89, 0xf1, 0xed, 0x84,
-	0x8d, 0xa4, 0xfa, 0x32, 0x06, 0x9e, 0x41, 0x0e, 0xd2, 0x68, 0xf7, 0xac, 0xd4, 0xf8, 0x47, 0x35,
-	0xfd, 0x84, 0x8d, 0xc0, 0x94, 0x5f, 0x8b, 0x9c, 0x42, 0x10, 0x1f, 0xf4, 0xc9, 0x1b, 0xdc, 0x64,
-	0x2a, 0xcf, 0x85, 0xa9, 0x70, 0xf6, 0x49, 0xb8, 0xfd, 0x2a, 0x89, 0x70, 0x63, 0x0a, 0x0c, 0xc4,
-	0xc4, 0x68, 0xd7, 0x39, 0x09, 0xb3, 0xeb, 0x91, 0x3e, 0xbe, 0xd4, 0x20, 0xf9, 0x40, 0xc3, 0xe7,
-	0x19, 0x48, 0x06, 0xda, 0xbd, 0x51, 0x92, 0x1e, 0xfd, 0x8f, 0x54, 0x67, 0x6b, 0xd8, 0xad, 0x02,
-	0xb0, 0x9d, 0xe9, 0x4e, 0x8a, 0x9b, 0x7b, 0x42, 0xf2, 0x00, 0xe3, 0x1a, 0x30, 0x10, 0xdc, 0x45,
-	0x3e, 0x0a, 0xce, 0xe3, 0xf3, 0x7a, 0xd2, 0xe3, 0xa4, 0x85, 0x1b, 0x5b, 0xb5, 0x7b, 0xe6, 0xa3,
-	0xc0, 0x89, 0x77, 0x77, 0x42, 0xb0, 0xc3, 0x13, 0x93, 0xb8, 0xb6, 0x8f, 0x82, 0x8b, 0xb8, 0x3c,
-	0xbf, 0x70, 0xbe, 0xfd, 0x68, 0x5b, 0x9d, 0xb7, 0xf8, 0xf2, 0xdf, 0xaf, 0x5c, 0x43, 0x13, 0xbd,
-	0x5f, 0xac, 0x3d, 0xb4, 0x5c, 0x7b, 0xe8, 0xf7, 0xda, 0x43, 0xdf, 0x37, 0x9e, 0xb5, 0xdc, 0x78,
-	0xd6, 0xaf, 0x8d, 0x67, 0x7d, 0x78, 0x99, 0x09, 0x33, 0x9c, 0xa5, 0x21, 0x53, 0x39, 0x65, 0x4a,
-	0xe7, 0x4a, 0x53, 0x91, 0xb2, 0xab, 0x4c, 0xd1, 0xf9, 0x73, 0x9a, 0x2b, 0x3e, 0x1b, 0x83, 0xae,
-	0x36, 0xf6, 0xc9, 0xb3, 0xab, 0xbd, 0xa5, 0x35, 0x5f, 0x27, 0xa0, 0xd3, 0x9b, 0xe5, 0xce, 0x3e,
-	0xfd, 0x1b, 0x00, 0x00, 0xff, 0xff, 0x16, 0xa3, 0xcb, 0xa2, 0x26, 0x03, 0x00, 0x00,
+	// 436 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xa4, 0x92, 0x4f, 0x6b, 0xd4, 0x40,
+	0x18, 0xc6, 0x33, 0xdd, 0x58, 0xb6, 0xb3, 0xb5, 0xe8, 0x54, 0x21, 0x2e, 0x98, 0x8d, 0x2b, 0x48,
+	0x2e, 0xcd, 0x48, 0xf4, 0xa2, 0x78, 0x8a, 0x07, 0x2d, 0x5e, 0x4a, 0x04, 0x0f, 0x82, 0x94, 0x64,
+	0xe6, 0x35, 0x1d, 0xba, 0x99, 0x59, 0x77, 0x66, 0x57, 0xfd, 0x06, 0x1e, 0xfd, 0x08, 0x7e, 0x9c,
+	0x1e, 0x7b, 0x11, 0x3c, 0x15, 0xd9, 0xfd, 0x16, 0x9e, 0x24, 0x93, 0x3f, 0xac, 0x74, 0x11, 0x4a,
+	0x6f, 0xef, 0xbc, 0xef, 0xf3, 0xfc, 0x9e, 0x97, 0xe1, 0xc5, 0x0f, 0x44, 0xce, 0x28, 0x53, 0x33,
+	0xa0, 0xec, 0x24, 0x93, 0x12, 0x26, 0x74, 0x11, 0xd3, 0x02, 0x24, 0x68, 0xa1, 0xa3, 0xe9, 0x4c,
+	0x19, 0x45, 0xf6, 0x45, 0xce, 0xa2, 0x4a, 0x12, 0x35, 0x92, 0x68, 0x11, 0x0f, 0xef, 0x14, 0xaa,
+	0x50, 0x76, 0x4e, 0xab, 0xaa, 0x96, 0x0e, 0x37, 0xd2, 0x5a, 0x97, 0x95, 0x8c, 0x7f, 0xf6, 0xf0,
+	0xee, 0xab, 0x9a, 0xff, 0xd6, 0x64, 0x06, 0xc8, 0x07, 0xdc, 0x6f, 0x14, 0xda, 0x43, 0x41, 0x2f,
+	0x1c, 0xc4, 0x8f, 0xa2, 0x0d, 0x89, 0xd1, 0x21, 0x07, 0x69, 0xc4, 0x47, 0x01, 0xfc, 0x65, 0xdd,
+	0x4c, 0xee, 0x9d, 0x5d, 0x8c, 0x9c, 0x3f, 0x17, 0xa3, 0xdb, 0x97, 0x46, 0x69, 0x87, 0x24, 0x29,
+	0xbe, 0x95, 0xb1, 0x53, 0xa9, 0x3e, 0x4f, 0x80, 0x17, 0x50, 0x82, 0x34, 0xda, 0xdb, 0xb2, 0x31,
+	0xc1, 0xc6, 0x98, 0xa3, 0x8c, 0x9d, 0x82, 0xb1, 0xab, 0x25, 0x6e, 0x15, 0x90, 0x5e, 0xf2, 0x93,
+	0xd7, 0x78, 0xc0, 0x54, 0x59, 0x0a, 0x53, 0xe3, 0x7a, 0x57, 0xc2, 0xad, 0x5b, 0x49, 0x82, 0xfb,
+	0x33, 0x60, 0x20, 0xa6, 0x46, 0x7b, 0xee, 0x95, 0x30, 0x9d, 0x8f, 0x1c, 0xe1, 0x3d, 0x0d, 0x92,
+	0x1f, 0x6b, 0xf8, 0x34, 0x07, 0xc9, 0x40, 0x7b, 0x37, 0x2c, 0xe9, 0xe1, 0xff, 0x48, 0x8d, 0xb6,
+	0x81, 0xdd, 0xac, 0x00, 0x6d, 0x4f, 0x93, 0x18, 0xdf, 0x95, 0xf0, 0xc5, 0x1c, 0x37, 0xb6, 0x8e,
+	0xec, 0x6d, 0x07, 0x28, 0x74, 0xd3, 0xfd, 0x6a, 0xd8, 0xfc, 0x74, 0x6b, 0x1a, 0xe7, 0x78, 0xb0,
+	0xb6, 0x24, 0xb9, 0x8f, 0x71, 0xeb, 0x16, 0xdc, 0x43, 0x01, 0x0a, 0x77, 0xd2, 0x9d, 0xa6, 0x73,
+	0xc8, 0xc9, 0x10, 0xf7, 0x3b, 0xe8, 0x96, 0x85, 0x76, 0x6f, 0x42, 0xb0, 0xcb, 0x33, 0x93, 0x79,
+	0xbd, 0x00, 0x85, 0xbb, 0xa9, 0xad, 0x9f, 0xbb, 0xdf, 0x7e, 0x8c, 0x9c, 0xf1, 0x1b, 0xbc, 0xf7,
+	0xef, 0xfa, 0xd7, 0x88, 0x49, 0xde, 0x9d, 0x2d, 0x7d, 0x74, 0xbe, 0xf4, 0xd1, 0xef, 0xa5, 0x8f,
+	0xbe, 0xaf, 0x7c, 0xe7, 0x7c, 0xe5, 0x3b, 0xbf, 0x56, 0xbe, 0xf3, 0xfe, 0x45, 0x21, 0xcc, 0xc9,
+	0x3c, 0x8f, 0x98, 0x2a, 0x29, 0x53, 0xba, 0x54, 0x9a, 0x8a, 0x9c, 0x1d, 0x14, 0x8a, 0x2e, 0x9e,
+	0xd1, 0x52, 0xf1, 0xf9, 0x04, 0x74, 0x7d, 0xe5, 0x8f, 0x9f, 0x1e, 0xac, 0x1d, 0xba, 0xf9, 0x3a,
+	0x05, 0x9d, 0x6f, 0xdb, 0x3b, 0x7f, 0xf2, 0x37, 0x00, 0x00, 0xff, 0xff, 0x28, 0x88, 0xce, 0xb6,
+	0x5a, 0x03, 0x00, 0x00,
 }
 
 func (m *GenesisState) Marshal() (dAtA []byte, err error) {
@@ -259,6 +270,11 @@ func (m *GenesisState) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if m.NextChannelSequence != 0 {
+		i = encodeVarintGenesis(dAtA, i, uint64(m.NextChannelSequence))
+		i--
+		dAtA[i] = 0x30
+	}
 	if len(m.SendSequences) > 0 {
 		for iNdEx := len(m.SendSequences) - 1; iNdEx >= 0; iNdEx-- {
 			{
@@ -456,6 +472,9 @@ func (m *GenesisState) Size() (n int) {
 			n += 1 + l + sovGenesis(uint64(l))
 		}
 	}
+	if m.NextChannelSequence != 0 {
+		n += 1 + sovGenesis(uint64(m.NextChannelSequence))
+	}
 	return n
 }
 
@@ -700,6 +719,25 @@ func (m *GenesisState) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
+		case 6:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field NextChannelSequence", wireType)
+			}
+			m.NextChannelSequence = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenesis
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.NextChannelSequence |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
 		default:
 			iNdEx = preIndex
 			skippy, err := skipGenesis(dAtA[iNdEx:])
diff --git a/modules/core/04-channel/v2/types/genesis_test.go b/modules/core/04-channel/v2/types/genesis_test.go
new file mode 100644
index 00000000000..e70290d54b1
--- /dev/null
+++ b/modules/core/04-channel/v2/types/genesis_test.go
@@ -0,0 +1,102 @@
+package types_test
+
+import (
+	"errors"
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/cosmos/ibc-go/v9/modules/core/04-channel/v2/types"
+	host "github.com/cosmos/ibc-go/v9/modules/core/24-host"
+	ibctesting "github.com/cosmos/ibc-go/v9/testing"
+)
+
+func TestValidateGenesis(t *testing.T) {
+	testCases := []struct {
+		name     string
+		genState types.GenesisState
+		expError error
+	}{
+		{
+			"default",
+			types.DefaultGenesisState(),
+			nil,
+		},
+		{
+			"valid genesis",
+			types.NewGenesisState(
+				[]types.IdentifiedChannel{
+					types.NewIdentifiedChannel(
+						ibctesting.FirstChannelID, types.NewChannel(ibctesting.FirstClientID, ibctesting.SecondChannelID, ibctesting.MerklePath),
+					),
+					types.NewIdentifiedChannel(
+						ibctesting.SecondChannelID, types.NewChannel(ibctesting.SecondClientID, ibctesting.FirstChannelID, ibctesting.MerklePath),
+					),
+				},
+				[]types.PacketState{types.NewPacketState(ibctesting.FirstChannelID, 1, []byte("ack"))},
+				[]types.PacketState{types.NewPacketState(ibctesting.SecondChannelID, 1, []byte(""))},
+				[]types.PacketState{types.NewPacketState(ibctesting.FirstChannelID, 1, []byte("commit_hash"))},
+				[]types.PacketSequence{types.NewPacketSequence(ibctesting.SecondChannelID, 1)},
+				2,
+			),
+			nil,
+		},
+		{
+			"invalid channel identifier",
+			types.GenesisState{
+				Channels: []types.IdentifiedChannel{types.NewIdentifiedChannel(ibctesting.InvalidID, types.NewChannel(ibctesting.FirstClientID, ibctesting.SecondChannelID, ibctesting.MerklePath))},
+			},
+			host.ErrInvalidID,
+		},
+		{
+			"invalid ack",
+			types.GenesisState{
+				Acknowledgements: []types.PacketState{
+					types.NewPacketState(ibctesting.SecondChannelID, 1, nil),
+				},
+			},
+			errors.New("data bytes cannot be nil"),
+		},
+		{
+			"invalid commitment",
+			types.GenesisState{
+				Commitments: []types.PacketState{
+					types.NewPacketState(ibctesting.FirstChannelID, 1, nil),
+				},
+			},
+			errors.New("data bytes cannot be nil"),
+		},
+		{
+			"invalid send seq",
+			types.GenesisState{
+				SendSequences: []types.PacketSequence{
+					types.NewPacketSequence(ibctesting.FirstChannelID, 0),
+				},
+			},
+			errors.New("sequence cannot be 0"),
+		},
+		{
+			"next channel sequence is less than maximum channel identifier sequence used",
+			types.GenesisState{
+				Channels: []types.IdentifiedChannel{
+					types.NewIdentifiedChannel("channel-10", types.NewChannel(ibctesting.FirstClientID, ibctesting.SecondChannelID, ibctesting.MerklePath)),
+				},
+				NextChannelSequence: 0,
+			},
+			fmt.Errorf("next channel sequence 0 must be greater than maximum sequence used in channel identifier 10"),
+		},
+	}
+
+	for _, tc := range testCases {
+
+		err := tc.genState.Validate()
+
+		expPass := tc.expError == nil
+		if expPass {
+			require.NoError(t, err)
+		} else {
+			ibctesting.RequireErrorIsOrContains(t, err, tc.expError)
+		}
+	}
+}
diff --git a/modules/core/04-channel/v2/types/packet.go b/modules/core/04-channel/v2/types/packet.go
index 42da61b2a15..1ba7722b925 100644
--- a/modules/core/04-channel/v2/types/packet.go
+++ b/modules/core/04-channel/v2/types/packet.go
@@ -84,12 +84,3 @@ func (p Payload) ValidateBasic() error {
 func TimeoutTimestampToNanos(seconds uint64) uint64 {
 	return uint64(time.Unix(int64(seconds), 0).UnixNano())
 }
-
-// NewPacketState creates and returns a new PacketState envelope type to encapsulate packet commitments, acks or receipts.
-func NewPacketState(channelID string, sequence uint64, data []byte) PacketState {
-	return PacketState{
-		ChannelId: channelID,
-		Sequence:  sequence,
-		Data:      data,
-	}
-}
diff --git a/proto/ibc/core/channel/v2/genesis.proto b/proto/ibc/core/channel/v2/genesis.proto
index ab2c2b73944..a4c54a91977 100644
--- a/proto/ibc/core/channel/v2/genesis.proto
+++ b/proto/ibc/core/channel/v2/genesis.proto
@@ -7,13 +7,15 @@ option go_package = "github.com/cosmos/ibc-go/v9/modules/core/04-channel/v2/type
 import "gogoproto/gogo.proto";
 import "ibc/core/channel/v2/channel.proto";
 
-// GenesisState defines the ibc channel submodule's genesis state.
+// GenesisState defines the ibc channel/v2 submodule's genesis state.
 message GenesisState {
   repeated IdentifiedChannel channels = 1 [(gogoproto.casttype) = "IdentifiedChannel", (gogoproto.nullable) = false];
   repeated PacketState       acknowledgements = 2 [(gogoproto.nullable) = false];
   repeated PacketState       commitments      = 3 [(gogoproto.nullable) = false];
   repeated PacketState       receipts         = 4 [(gogoproto.nullable) = false];
   repeated PacketSequence    send_sequences   = 5 [(gogoproto.nullable) = false];
+  // the sequence for the next generated channel identifier
+  uint64 next_channel_sequence = 6;
 }
 
 // PacketState defines the generic type necessary to retrieve and store