diff --git a/docs/core/proto-docs.md b/docs/core/proto-docs.md
index 47cfa54f6..7c23a5c40 100644
--- a/docs/core/proto-docs.md
+++ b/docs/core/proto-docs.md
@@ -7295,6 +7295,7 @@ Class defines the class of the nft type.
 | `description` | [string](#string) |  | description is a brief description of nft classification,optional |
 | `uri` | [string](#string) |  | uri is a URI may point to a JSON file that conforms to the nft classification Metadata JSON Schema.optional |
 | `uri_hash` | [string](#string) |  | uri_hash is a hash of the document pointed to uri,optional |
+| `data` | [google.protobuf.Any](#google.protobuf.Any) |  | data is the metadata of NFT classification,optional |
 
 
 
diff --git a/proto/cosmos/nft/v1beta1/nft.proto b/proto/cosmos/nft/v1beta1/nft.proto
index b11dd7c69..83a6225ad 100644
--- a/proto/cosmos/nft/v1beta1/nft.proto
+++ b/proto/cosmos/nft/v1beta1/nft.proto
@@ -24,6 +24,9 @@ message Class {
 
   // uri_hash is a hash of the document pointed to uri,optional
   string uri_hash = 6;
+
+  // data is the metadata of NFT classification,optional
+  google.protobuf.Any data = 7;
 }
 
 // NFT defines the NFT.
diff --git a/x/nft/nft.pb.go b/x/nft/nft.pb.go
index 6c349f4bd..d0e64ef18 100644
--- a/x/nft/nft.pb.go
+++ b/x/nft/nft.pb.go
@@ -37,6 +37,8 @@ type Class struct {
 	Uri string `protobuf:"bytes,5,opt,name=uri,proto3" json:"uri,omitempty"`
 	// uri_hash is a hash of the document pointed to uri,optional
 	UriHash string `protobuf:"bytes,6,opt,name=uri_hash,json=uriHash,proto3" json:"uri_hash,omitempty"`
+	// data is the metadata of NFT classification,optional
+	Data *types.Any `protobuf:"bytes,7,opt,name=data,proto3" json:"data,omitempty"`
 }
 
 func (m *Class) Reset()         { *m = Class{} }
@@ -114,6 +116,13 @@ func (m *Class) GetUriHash() string {
 	return ""
 }
 
+func (m *Class) GetData() *types.Any {
+	if m != nil {
+		return m.Data
+	}
+	return nil
+}
+
 // NFT defines the NFT.
 type NFT struct {
 	// class_id defines the unique identifier of the NFT classification, similar to the contract address of ERC721
@@ -204,27 +213,27 @@ func init() {
 func init() { proto.RegisterFile("cosmos/nft/v1beta1/nft.proto", fileDescriptor_eb8ebf8e8053172c) }
 
 var fileDescriptor_eb8ebf8e8053172c = []byte{
-	// 312 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x6c, 0x51, 0xc1, 0x4b, 0xfb, 0x30,
-	0x18, 0x5d, 0xda, 0x6e, 0xfb, 0xfd, 0x32, 0x10, 0x09, 0x22, 0x99, 0x48, 0x18, 0x3b, 0xed, 0x62,
-	0xc2, 0xf4, 0xea, 0x45, 0x05, 0xd1, 0x8b, 0x87, 0xe1, 0xc9, 0xcb, 0x48, 0x9b, 0x6e, 0x0d, 0xb6,
-	0xcd, 0x68, 0x52, 0xb1, 0x7f, 0x81, 0x57, 0xf1, 0xaf, 0xf2, 0xb8, 0xa3, 0x47, 0x69, 0xff, 0x11,
-	0x49, 0x5a, 0x87, 0x82, 0xa7, 0xef, 0x7d, 0xef, 0x3d, 0x1e, 0x8f, 0xef, 0x83, 0xc7, 0x91, 0xd2,
-	0x99, 0xd2, 0x2c, 0x5f, 0x19, 0xf6, 0x34, 0x0f, 0x63, 0xc3, 0xe7, 0x16, 0xd3, 0x4d, 0xa1, 0x8c,
-	0x42, 0xa8, 0x55, 0xa9, 0x65, 0x3a, 0xf5, 0x68, 0xbc, 0x56, 0x6a, 0x9d, 0xc6, 0xcc, 0x39, 0xc2,
-	0x72, 0xc5, 0x78, 0x5e, 0xb5, 0xf6, 0xe9, 0x1b, 0x80, 0xfd, 0xab, 0x94, 0x6b, 0x8d, 0xf6, 0xa0,
-	0x27, 0x05, 0x06, 0x13, 0x30, 0xfb, 0xbf, 0xf0, 0xa4, 0x40, 0x08, 0x06, 0x39, 0xcf, 0x62, 0xec,
-	0x39, 0xc6, 0x61, 0x74, 0x08, 0x07, 0xba, 0xca, 0x42, 0x95, 0x62, 0xdf, 0xb1, 0xdd, 0x86, 0x26,
-	0x70, 0x24, 0x62, 0x1d, 0x15, 0x72, 0x63, 0xa4, 0xca, 0x71, 0xe0, 0xc4, 0x9f, 0x14, 0xda, 0x87,
-	0x7e, 0x59, 0x48, 0xdc, 0x77, 0x8a, 0x85, 0x68, 0x0c, 0xff, 0x95, 0x85, 0x5c, 0x26, 0x5c, 0x27,
-	0x78, 0xe0, 0xe8, 0x61, 0x59, 0xc8, 0x1b, 0xae, 0x93, 0xe9, 0x0b, 0x80, 0xfe, 0xdd, 0xf5, 0xbd,
-	0xb5, 0x44, 0xb6, 0xdb, 0x72, 0x57, 0x6c, 0xe8, 0xf6, 0x5b, 0xd1, 0xb5, 0xf5, 0x76, 0x6d, 0xbb,
-	0x7c, 0xff, 0xef, 0xfc, 0xe0, 0x57, 0x3e, 0x9a, 0xc1, 0x40, 0x70, 0xc3, 0x31, 0x9c, 0x80, 0xd9,
-	0xe8, 0xf4, 0x80, 0xb6, 0xe7, 0xa1, 0xdf, 0xe7, 0xa1, 0x17, 0x79, 0xb5, 0x70, 0x8e, 0xcb, 0xf3,
-	0xf7, 0x9a, 0x80, 0x6d, 0x4d, 0xc0, 0x67, 0x4d, 0xc0, 0x6b, 0x43, 0x7a, 0xdb, 0x86, 0xf4, 0x3e,
-	0x1a, 0xd2, 0x7b, 0x98, 0xae, 0xa5, 0x49, 0xca, 0x90, 0x46, 0x2a, 0x63, 0xdd, 0x43, 0xda, 0x71,
-	0xa2, 0xc5, 0x23, 0x7b, 0xb6, 0x1f, 0x09, 0x07, 0x2e, 0xf1, 0xec, 0x2b, 0x00, 0x00, 0xff, 0xff,
-	0x2e, 0x0d, 0x3c, 0x9b, 0xb2, 0x01, 0x00, 0x00,
+	// 317 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x84, 0x91, 0xc1, 0x4a, 0xc3, 0x30,
+	0x1c, 0xc6, 0x97, 0xb6, 0xdb, 0x34, 0x03, 0x91, 0x20, 0x92, 0x89, 0x84, 0xb1, 0xd3, 0x2e, 0x26,
+	0x4c, 0xaf, 0x5e, 0x54, 0x10, 0xbd, 0x78, 0x18, 0x9e, 0xbc, 0x8c, 0xb4, 0xe9, 0xd6, 0xe0, 0xda,
+	0x8c, 0x26, 0x15, 0xfb, 0x04, 0x5e, 0x7d, 0x20, 0x1f, 0xc0, 0xe3, 0x8e, 0x1e, 0xa5, 0x7d, 0x11,
+	0x49, 0x5a, 0x87, 0x87, 0x81, 0xa7, 0xfc, 0xf3, 0x7d, 0x1f, 0x7f, 0x7e, 0x1f, 0x7f, 0x78, 0x1a,
+	0x29, 0x9d, 0x2a, 0xcd, 0xb2, 0x85, 0x61, 0x2f, 0xd3, 0x30, 0x36, 0x7c, 0x6a, 0x67, 0xba, 0xce,
+	0x95, 0x51, 0x08, 0x35, 0x2e, 0xb5, 0x4a, 0xeb, 0x9e, 0x0c, 0x97, 0x4a, 0x2d, 0x57, 0x31, 0x73,
+	0x89, 0xb0, 0x58, 0x30, 0x9e, 0x95, 0x4d, 0x7c, 0xfc, 0x01, 0x60, 0xf7, 0x66, 0xc5, 0xb5, 0x46,
+	0x07, 0xd0, 0x93, 0x02, 0x83, 0x11, 0x98, 0xec, 0xcf, 0x3c, 0x29, 0x10, 0x82, 0x41, 0xc6, 0xd3,
+	0x18, 0x7b, 0x4e, 0x71, 0x33, 0x3a, 0x86, 0x3d, 0x5d, 0xa6, 0xa1, 0x5a, 0x61, 0xdf, 0xa9, 0xed,
+	0x0f, 0x8d, 0xe0, 0x40, 0xc4, 0x3a, 0xca, 0xe5, 0xda, 0x48, 0x95, 0xe1, 0xc0, 0x99, 0x7f, 0x25,
+	0x74, 0x08, 0xfd, 0x22, 0x97, 0xb8, 0xeb, 0x1c, 0x3b, 0xa2, 0x21, 0xdc, 0x2b, 0x72, 0x39, 0x4f,
+	0xb8, 0x4e, 0x70, 0xcf, 0xc9, 0xfd, 0x22, 0x97, 0x77, 0x5c, 0x27, 0x68, 0x02, 0x03, 0xc1, 0x0d,
+	0xc7, 0xfd, 0x11, 0x98, 0x0c, 0xce, 0x8f, 0x68, 0x83, 0x4f, 0x7f, 0xf1, 0xe9, 0x55, 0x56, 0xce,
+	0x5c, 0x62, 0xfc, 0x06, 0xa0, 0xff, 0x70, 0xfb, 0x68, 0x97, 0x45, 0xb6, 0xc5, 0x7c, 0x5b, 0xa1,
+	0xef, 0xfe, 0xf7, 0xa2, 0xed, 0xe5, 0x6d, 0x7b, 0xb5, 0x24, 0xfe, 0x6e, 0x92, 0x60, 0x37, 0x09,
+	0xfc, 0x8f, 0xe4, 0xfa, 0xf2, 0xb3, 0x22, 0x60, 0x53, 0x11, 0xf0, 0x5d, 0x11, 0xf0, 0x5e, 0x93,
+	0xce, 0xa6, 0x26, 0x9d, 0xaf, 0x9a, 0x74, 0x9e, 0xc6, 0x4b, 0x69, 0x92, 0x22, 0xa4, 0x91, 0x4a,
+	0x59, 0x7b, 0xba, 0xe6, 0x39, 0xd3, 0xe2, 0x99, 0xbd, 0xda, 0xdb, 0x85, 0x3d, 0xb7, 0xf1, 0xe2,
+	0x27, 0x00, 0x00, 0xff, 0xff, 0x94, 0x4b, 0x2c, 0xc3, 0xdc, 0x01, 0x00, 0x00,
 }
 
 func (m *Class) Marshal() (dAtA []byte, err error) {
@@ -247,6 +256,18 @@ func (m *Class) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if m.Data != nil {
+		{
+			size, err := m.Data.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintNft(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x3a
+	}
 	if len(m.UriHash) > 0 {
 		i -= len(m.UriHash)
 		copy(dAtA[i:], m.UriHash)
@@ -396,6 +417,10 @@ func (m *Class) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovNft(uint64(l))
 	}
+	if m.Data != nil {
+		l = m.Data.Size()
+		n += 1 + l + sovNft(uint64(l))
+	}
 	return n
 }
 
@@ -655,6 +680,42 @@ func (m *Class) Unmarshal(dAtA []byte) error {
 			}
 			m.UriHash = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
+		case 7:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Data", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowNft
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthNft
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthNft
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.Data == nil {
+				m.Data = &types.Any{}
+			}
+			if err := m.Data.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipNft(dAtA[iNdEx:])