From 5cc08df7eca745bf70e1bebb7dd715bec0656b10 Mon Sep 17 00:00:00 2001
From: Julien Robert <julien@rbrt.fr>
Date: Tue, 19 Nov 2024 16:21:11 +0100
Subject: [PATCH 1/7] fix(x/staking): make metadata nullable

---
 api/cosmos/staking/v1beta1/staking.pulsar.go  |   2 +-
 x/staking/client/cli/tx.go                    |   4 +-
 x/staking/client/cli/utils.go                 |  16 +-
 .../cosmos/staking/v1beta1/staking.proto      |   2 +-
 x/staking/simulation/msg_factory.go           |   4 +-
 x/staking/types/staking.pb.go                 | 405 +++++++++---------
 x/staking/types/validator.go                  |   2 +-
 7 files changed, 223 insertions(+), 212 deletions(-)

diff --git a/api/cosmos/staking/v1beta1/staking.pulsar.go b/api/cosmos/staking/v1beta1/staking.pulsar.go
index c2f9457ca822..6c301f72e05d 100644
--- a/api/cosmos/staking/v1beta1/staking.pulsar.go
+++ b/api/cosmos/staking/v1beta1/staking.pulsar.go
@@ -16175,7 +16175,7 @@ var file_cosmos_staking_v1beta1_staking_proto_rawDesc = []byte{
 	0x64, 0x61, 0x74, 0x61, 0x18, 0x06, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x20, 0x2e, 0x63, 0x6f, 0x73,
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diff --git a/x/staking/client/cli/tx.go b/x/staking/client/cli/tx.go
index 0e1ba1c396dd..8976484241f8 100644
--- a/x/staking/client/cli/tx.go
+++ b/x/staking/client/cli/tx.go
@@ -133,7 +133,7 @@ func NewEditValidatorCmd() *cobra.Command {
 			profilePicUri, _ := cmd.Flags().GetString(FlagMetadataProfilePicUri)
 			socialHandlesUris, _ := cmd.Flags().GetStringArray(FlagMetadataSocialHandleUris)
 
-			metadata := types.Metadata{
+			metadata := &types.Metadata{
 				ProfilePicUri:    profilePicUri,
 				SocialHandleUris: socialHandlesUris,
 			}
@@ -401,7 +401,7 @@ func BuildCreateValidatorMsg(clientCtx client.Context, config TxCreateValidatorC
 		config.Website,
 		config.SecurityContact,
 		config.Details,
-		config.Metadata,
+		&config.Metadata,
 	)
 
 	// get the initial validator commission parameters
diff --git a/x/staking/client/cli/utils.go b/x/staking/client/cli/utils.go
index fc4ed032efc4..00baf3504fd5 100644
--- a/x/staking/client/cli/utils.go
+++ b/x/staking/client/cli/utils.go
@@ -24,7 +24,7 @@ type validator struct {
 	Website           string
 	Security          string
 	Details           string
-	Metadata          types.Metadata
+	Metadata          *types.Metadata
 	CommissionRates   types.CommissionRates
 	MinSelfDelegation math.Int
 }
@@ -134,11 +134,15 @@ func buildCommissionRates(rateStr, maxRateStr, maxChangeRateStr string) (commiss
 	return commission, nil
 }
 
-func buildMetadata(profilePicUri string, socialHandlesUris []string) (metadata types.Metadata, err error) {
-	metadata.ProfilePicUri = profilePicUri
-	metadata.SocialHandleUris = socialHandlesUris
+func buildMetadata(profilePicUri string, socialHandlesUris []string) (*types.Metadata, error) {
+	metadata := types.Metadata{
+		ProfilePicUri:    profilePicUri,
+		SocialHandleUris: socialHandlesUris,
+	}
+
 	if err := metadata.Validate(); err != nil {
-		return metadata, err
+		return nil, err
 	}
-	return metadata, nil
+
+	return &metadata, nil
 }
diff --git a/x/staking/proto/cosmos/staking/v1beta1/staking.proto b/x/staking/proto/cosmos/staking/v1beta1/staking.proto
index b6dd5fcbff78..495fa0020cfd 100644
--- a/x/staking/proto/cosmos/staking/v1beta1/staking.proto
+++ b/x/staking/proto/cosmos/staking/v1beta1/staking.proto
@@ -79,7 +79,7 @@ message Description {
   // details define other optional details.
   string details = 5;
   // metadata defines extra information about the validator.
-  Metadata metadata = 6 [(gogoproto.nullable) = false, (amino.dont_omitempty) = true];
+  Metadata metadata = 6 [(gogoproto.nullable) = true, (amino.dont_omitempty) = false];
 }
 
 // Metadata defines extra information about the validator.
diff --git a/x/staking/simulation/msg_factory.go b/x/staking/simulation/msg_factory.go
index 49aff2505298..a0a8c4a9df24 100644
--- a/x/staking/simulation/msg_factory.go
+++ b/x/staking/simulation/msg_factory.go
@@ -46,7 +46,7 @@ func MsgCreateValidatorFactory(k *keeper.Keeper) simsx.SimMsgFactoryFn[*types.Ms
 			r.StringN(10),
 			r.StringN(10),
 			r.StringN(10),
-			types.Metadata{
+			&types.Metadata{
 				ProfilePicUri:    RandURIOfHostLength(r.Rand, 10),
 				SocialHandleUris: RandSocialHandleURIs(r.Rand, 2, 10),
 			},
@@ -143,7 +143,7 @@ func MsgEditValidatorFactory(k *keeper.Keeper) simsx.SimMsgFactoryFn[*types.MsgE
 		}
 		valOpAddrBz := must(k.ValidatorAddressCodec().StringToBytes(val.GetOperator()))
 		valOper := testData.GetAccountbyAccAddr(reporter, valOpAddrBz)
-		d := types.NewDescription(r.StringN(10), r.StringN(10), r.StringN(10), r.StringN(10), r.StringN(10), types.Metadata{
+		d := types.NewDescription(r.StringN(10), r.StringN(10), r.StringN(10), r.StringN(10), r.StringN(10), &types.Metadata{
 			ProfilePicUri:    RandURIOfHostLength(r.Rand, 10),
 			SocialHandleUris: RandSocialHandleURIs(r.Rand, 2, 10),
 		})
diff --git a/x/staking/types/staking.pb.go b/x/staking/types/staking.pb.go
index 197e937a35d4..1a6ae219a100 100644
--- a/x/staking/types/staking.pb.go
+++ b/x/staking/types/staking.pb.go
@@ -271,7 +271,7 @@ type Description struct {
 	// details define other optional details.
 	Details string `protobuf:"bytes,5,opt,name=details,proto3" json:"details,omitempty"`
 	// metadata defines extra information about the validator.
-	Metadata Metadata `protobuf:"bytes,6,opt,name=metadata,proto3" json:"metadata"`
+	Metadata *Metadata `protobuf:"bytes,6,opt,name=metadata,proto3" json:"metadata,omitempty"`
 }
 
 func (m *Description) Reset()         { *m = Description{} }
@@ -342,11 +342,11 @@ func (m *Description) GetDetails() string {
 	return ""
 }
 
-func (m *Description) GetMetadata() Metadata {
+func (m *Description) GetMetadata() *Metadata {
 	if m != nil {
 		return m.Metadata
 	}
-	return Metadata{}
+	return nil
 }
 
 // Metadata defines extra information about the validator.
@@ -1449,7 +1449,7 @@ func init() {
 }
 
 var fileDescriptor_64c30c6cf92913c9 = []byte{
-	// 2146 bytes of a gzipped FileDescriptorProto
+	// 2150 bytes of a gzipped FileDescriptorProto
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@@ -1489,102 +1489,102 @@ var fileDescriptor_64c30c6cf92913c9 = []byte{
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 }
 
 func (this *Pool) Description() (desc *github_com_cosmos_gogoproto_protoc_gen_gogo_descriptor.FileDescriptorSet) {
@@ -1593,7 +1593,7 @@ func (this *Pool) Description() (desc *github_com_cosmos_gogoproto_protoc_gen_go
 func StakingDescription() (desc *github_com_cosmos_gogoproto_protoc_gen_gogo_descriptor.FileDescriptorSet) {
 	d := &github_com_cosmos_gogoproto_protoc_gen_gogo_descriptor.FileDescriptorSet{}
 	var gzipped = []byte{
-		// 11876 bytes of a gzipped FileDescriptorSet
+		// 11880 bytes of a gzipped FileDescriptorSet
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@@ -2250,93 +2250,93 @@ func StakingDescription() (desc *github_com_cosmos_gogoproto_protoc_gen_gogo_des
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+		0xff, 0x24, 0xc1, 0x89, 0x01, 0x69, 0xf6, 0xbb, 0x6c, 0x00, 0x72, 0x42, 0x95, 0x54, 0x2a, 0xc4,
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+		0x59, 0x76, 0x61, 0x07, 0x0a, 0xd1, 0xe6, 0x98, 0xc6, 0xae, 0x8c, 0x6a, 0xae, 0x30, 0xb2, 0xa9,
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+		0x3d, 0xf4, 0x2a, 0x4c, 0x8a, 0xeb, 0xa0, 0xd2, 0xb8, 0x57, 0x4d, 0xc3, 0xfc, 0xe4, 0xc8, 0x34,
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+		0x90, 0xae, 0x40, 0x92, 0xa8, 0xc2, 0x89, 0x43, 0x28, 0x0f, 0x82, 0x10, 0x32, 0x6b, 0x0d, 0x38,
+		0xc1, 0x33, 0x05, 0xee, 0xc6, 0x0e, 0xe5, 0x28, 0xa6, 0x03, 0x7a, 0x11, 0xef, 0xc7, 0xa4, 0x0d,
+		0xf2, 0x63, 0xa5, 0x0d, 0xce, 0xff, 0xbc, 0x04, 0x10, 0xe4, 0xcc, 0xd0, 0xa3, 0x70, 0xbc, 0xba,
+		0xb1, 0xbe, 0x1c, 0x5c, 0xc6, 0x08, 0x6d, 0xad, 0x8b, 0x53, 0x1a, 0x6e, 0x17, 0x1b, 0xe6, 0x8e,
+		0x89, 0x5b, 0xe8, 0x21, 0x98, 0x89, 0x42, 0x93, 0xaf, 0xda, 0xb2, 0x2c, 0xcd, 0xe5, 0x5f, 0xbf,
+		0xbb, 0x90, 0x61, 0x31, 0x02, 0x6e, 0xa1, 0x73, 0x70, 0x74, 0x10, 0xae, 0xbe, 0xbe, 0x22, 0x27,
+		0xe6, 0x0a, 0xaf, 0xdf, 0x5d, 0xc8, 0xfa, 0xc1, 0x04, 0x52, 0x00, 0x85, 0x21, 0x39, 0xbd, 0xe4,
+		0x1c, 0xbc, 0x7e, 0x77, 0x21, 0xcd, 0x96, 0x0c, 0xbf, 0xc5, 0xf1, 0x8d, 0x00, 0x75, 0x6b, 0xc7,
+		0xd1, 0x0d, 0xaa, 0x1a, 0xe6, 0xe0, 0x58, 0x7d, 0xfd, 0xaa, 0x5a, 0x59, 0x6a, 0xd6, 0x37, 0xd6,
+		0xfb, 0x4e, 0x04, 0x44, 0xeb, 0x96, 0x37, 0xb6, 0xaa, 0xab, 0x35, 0xad, 0x51, 0x5f, 0x59, 0x67,
+		0x57, 0xae, 0x22, 0x75, 0xef, 0x59, 0x6f, 0xd6, 0xd7, 0x6a, 0x72, 0xa2, 0x7a, 0x65, 0xe8, 0x76,
+		0xdc, 0x7d, 0x91, 0xc5, 0x18, 0x98, 0xa3, 0xc8, 0x46, 0xdc, 0xff, 0x0d, 0x00, 0x00, 0xff, 0xff,
+		0xf0, 0xde, 0x01, 0x06, 0xe8, 0xa7, 0x00, 0x00,
 	}
 	r := bytes.NewReader(gzipped)
 	gzipr, err := compress_gzip.NewReader(r)
@@ -2443,7 +2443,7 @@ func (this *Description) Equal(that interface{}) bool {
 	if this.Details != that1.Details {
 		return false
 	}
-	if !this.Metadata.Equal(&that1.Metadata) {
+	if !this.Metadata.Equal(that1.Metadata) {
 		return false
 	}
 	return true
@@ -2815,16 +2815,18 @@ func (m *Description) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
-	{
-		size, err := m.Metadata.MarshalToSizedBuffer(dAtA[:i])
-		if err != nil {
-			return 0, err
+	if m.Metadata != nil {
+		{
+			size, err := m.Metadata.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintStaking(dAtA, i, uint64(size))
 		}
-		i -= size
-		i = encodeVarintStaking(dAtA, i, uint64(size))
+		i--
+		dAtA[i] = 0x32
 	}
-	i--
-	dAtA[i] = 0x32
 	if len(m.Details) > 0 {
 		i -= len(m.Details)
 		copy(dAtA[i:], m.Details)
@@ -3989,8 +3991,10 @@ func (m *Description) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovStaking(uint64(l))
 	}
-	l = m.Metadata.Size()
-	n += 1 + l + sovStaking(uint64(l))
+	if m.Metadata != nil {
+		l = m.Metadata.Size()
+		n += 1 + l + sovStaking(uint64(l))
+	}
 	return n
 }
 
@@ -5010,6 +5014,9 @@ func (m *Description) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
+			if m.Metadata == nil {
+				m.Metadata = &Metadata{}
+			}
 			if err := m.Metadata.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
diff --git a/x/staking/types/validator.go b/x/staking/types/validator.go
index 6665c037b793..66483bb9b70e 100644
--- a/x/staking/types/validator.go
+++ b/x/staking/types/validator.go
@@ -189,7 +189,7 @@ func (v Validator) IsUnbonding() bool {
 // constant used in flags to indicate that description field should not be updated
 const DoNotModifyDesc = "[do-not-modify]"
 
-func NewDescription(moniker, identity, website, securityContact, details string, metadata Metadata) Description {
+func NewDescription(moniker, identity, website, securityContact, details string, metadata *Metadata) Description {
 	return Description{
 		Moniker:         moniker,
 		Identity:        identity,

From a4a5a6b1a2a4588a94e2c7b54034b95dfa6a500a Mon Sep 17 00:00:00 2001
From: Julien Robert <julien@rbrt.fr>
Date: Tue, 19 Nov 2024 16:22:03 +0100
Subject: [PATCH 2/7] cl

---
 x/staking/CHANGELOG.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/x/staking/CHANGELOG.md b/x/staking/CHANGELOG.md
index 24843a45f121..49cd67798b9f 100644
--- a/x/staking/CHANGELOG.md
+++ b/x/staking/CHANGELOG.md
@@ -34,7 +34,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 * [#19537](https://github.com/cosmos/cosmos-sdk/pull/19537) Changing `MinCommissionRate` in `MsgUpdateParams` now updates the minimum commission rate for all validators.
 * [#20434](https://github.com/cosmos/cosmos-sdk/pull/20434) Add consensus address to validator query response
-* [#21315](https://github.com/cosmos/cosmos-sdk/pull/21315) Create metadata type and add metadata field in validator details proto
+* [#21315](https://github.com/cosmos/cosmos-sdk/pull/21315), [#22556](https://github.com/cosmos/cosmos-sdk/pull/22556) Create metadata type and add metadata field in validator details proto
     * Add parsing of `metadata-profile-pic-uri` in `create-validator` JSON.
     * Add cli flag: `metadata-profile-pic-uri` to `edit-validator` cmd.
 

From f4d6a37e6b7bfe8e4a58cbfd2beaf6cb07a20813 Mon Sep 17 00:00:00 2001
From: Julien Robert <julien@rbrt.fr>
Date: Wed, 20 Nov 2024 09:32:51 +0100
Subject: [PATCH 3/7] fix

---
 testutil/network/network.go           | 2 +-
 x/genutil/gentx_test.go               | 2 +-
 x/genutil/types/genesis_state_test.go | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/testutil/network/network.go b/testutil/network/network.go
index 2bc85a10bd52..994e7d5ef366 100644
--- a/testutil/network/network.go
+++ b/testutil/network/network.go
@@ -493,7 +493,7 @@ func New(l Logger, baseDir string, cfg Config) (NetworkI, error) {
 			sdk.ValAddress(addr).String(),
 			valPubKeys[i],
 			sdk.NewCoin(cfg.BondDenom, cfg.BondedTokens),
-			stakingtypes.NewDescription(nodeDirName, "", "", "", "", stakingtypes.Metadata{}),
+			stakingtypes.NewDescription(nodeDirName, "", "", "", "", &stakingtypes.Metadata{}),
 			stakingtypes.NewCommissionRates(commission, sdkmath.LegacyOneDec(), sdkmath.LegacyOneDec()),
 			sdkmath.OneInt(),
 		)
diff --git a/x/genutil/gentx_test.go b/x/genutil/gentx_test.go
index 3a79c9bcceb1..ffe19d1980c9 100644
--- a/x/genutil/gentx_test.go
+++ b/x/genutil/gentx_test.go
@@ -36,7 +36,7 @@ var (
 	pk2   = priv2.PubKey()
 	addr1 = sdk.AccAddress(pk1.Address())
 	addr2 = sdk.AccAddress(pk2.Address())
-	desc  = stakingtypes.NewDescription("testname", "", "", "", "", stakingtypes.Metadata{})
+	desc  = stakingtypes.NewDescription("testname", "", "", "", "", &stakingtypes.Metadata{})
 	comm  = stakingtypes.CommissionRates{}
 )
 
diff --git a/x/genutil/types/genesis_state_test.go b/x/genutil/types/genesis_state_test.go
index 9e04d9a5f571..ec5ec7047038 100644
--- a/x/genutil/types/genesis_state_test.go
+++ b/x/genutil/types/genesis_state_test.go
@@ -39,7 +39,7 @@ func TestNetGenesisState(t *testing.T) {
 }
 
 func TestValidateGenesisMultipleMessages(t *testing.T) {
-	desc := stakingtypes.NewDescription("testname", "", "", "", "", stakingtypes.Metadata{})
+	desc := stakingtypes.NewDescription("testname", "", "", "", "", &stakingtypes.Metadata{})
 	comm := stakingtypes.CommissionRates{}
 	valAc := codectestutil.CodecOptions{}.GetValidatorCodec()
 
@@ -66,7 +66,7 @@ func TestValidateGenesisMultipleMessages(t *testing.T) {
 }
 
 func TestValidateGenesisBadMessage(t *testing.T) {
-	desc := stakingtypes.NewDescription("testname", "", "", "", "", stakingtypes.Metadata{})
+	desc := stakingtypes.NewDescription("testname", "", "", "", "", &stakingtypes.Metadata{})
 	pk1Addr, err := codectestutil.CodecOptions{}.GetValidatorCodec().BytesToString(pk1.Address())
 	require.NoError(t, err)
 	msg1 := stakingtypes.NewMsgEditValidator(pk1Addr, desc, nil, nil)

From accb7ecded235a070b9376c5621070efe8f9d6df Mon Sep 17 00:00:00 2001
From: Julien Robert <julien@rbrt.fr>
Date: Tue, 26 Nov 2024 17:52:28 +0100
Subject: [PATCH 4/7] build

---
 simapp/simd/cmd/testnet.go                             |  2 +-
 simapp/v2/simdv2/cmd/testnet.go                        |  2 +-
 tests/integration/gov/common_test.go                   |  2 +-
 tests/integration/slashing/slashing_test.go            |  2 +-
 tests/integration/staking/keeper/deterministic_test.go | 10 +++++-----
 tests/integration/staking/keeper/genesis_test.go       | 10 +++++-----
 tests/integration/staking/keeper/msg_server_test.go    |  2 +-
 x/staking/types/validator.go                           |  6 ++++--
 8 files changed, 19 insertions(+), 17 deletions(-)

diff --git a/simapp/simd/cmd/testnet.go b/simapp/simd/cmd/testnet.go
index b7199b4cbafa..e060976d1376 100644
--- a/simapp/simd/cmd/testnet.go
+++ b/simapp/simd/cmd/testnet.go
@@ -353,7 +353,7 @@ func initTestnetFiles(
 			valStr,
 			valPubKeys[i],
 			sdk.NewCoin(args.bondTokenDenom, valTokens),
-			stakingtypes.NewDescription(nodeDirName, "", "", "", "", stakingtypes.Metadata{}),
+			stakingtypes.NewDescription(nodeDirName, "", "", "", "", &stakingtypes.Metadata{}),
 			stakingtypes.NewCommissionRates(math.LegacyOneDec(), math.LegacyOneDec(), math.LegacyOneDec()),
 			math.OneInt(),
 		)
diff --git a/simapp/v2/simdv2/cmd/testnet.go b/simapp/v2/simdv2/cmd/testnet.go
index 46a19c039c86..ed5786fb668c 100644
--- a/simapp/v2/simdv2/cmd/testnet.go
+++ b/simapp/v2/simdv2/cmd/testnet.go
@@ -295,7 +295,7 @@ func initTestnetFiles[T transaction.Tx](
 			valStr,
 			valPubKeys[i],
 			sdk.NewCoin(args.bondTokenDenom, valTokens),
-			stakingtypes.NewDescription(nodeDirName, "", "", "", "", stakingtypes.Metadata{}),
+			stakingtypes.NewDescription(nodeDirName, "", "", "", "", &stakingtypes.Metadata{}),
 			stakingtypes.NewCommissionRates(math.LegacyOneDec(), math.LegacyOneDec(), math.LegacyOneDec()),
 			math.OneInt(),
 		)
diff --git a/tests/integration/gov/common_test.go b/tests/integration/gov/common_test.go
index f84bbc81a857..b2fe831877ee 100644
--- a/tests/integration/gov/common_test.go
+++ b/tests/integration/gov/common_test.go
@@ -34,7 +34,7 @@ import (
 var (
 	valTokens           = sdk.TokensFromConsensusPower(42, sdk.DefaultPowerReduction)
 	TestProposal        = v1beta1.NewTextProposal("Test", "description")
-	TestDescription     = stakingtypes.NewDescription("T", "E", "S", "T", "Z", stakingtypes.Metadata{})
+	TestDescription     = stakingtypes.NewDescription("T", "E", "S", "T", "Z", &stakingtypes.Metadata{})
 	TestCommissionRates = stakingtypes.NewCommissionRates(math.LegacyZeroDec(), math.LegacyZeroDec(), math.LegacyZeroDec())
 )
 
diff --git a/tests/integration/slashing/slashing_test.go b/tests/integration/slashing/slashing_test.go
index 6c60ce295b5d..be116892c240 100644
--- a/tests/integration/slashing/slashing_test.go
+++ b/tests/integration/slashing/slashing_test.go
@@ -83,7 +83,7 @@ func TestSlashingMsgs(t *testing.T) {
 
 	require.NoError(t, err)
 
-	description := stakingtypes.NewDescription("foo_moniker", "", "", "", "", stakingtypes.Metadata{})
+	description := stakingtypes.NewDescription("foo_moniker", "", "", "", "", &stakingtypes.Metadata{})
 	commission := stakingtypes.NewCommissionRates(math.LegacyZeroDec(), math.LegacyZeroDec(), math.LegacyZeroDec())
 
 	addrStrVal, err := valaddrCodec.BytesToString(addr1)
diff --git a/tests/integration/staking/keeper/deterministic_test.go b/tests/integration/staking/keeper/deterministic_test.go
index 4a47dc2fa6f5..d7e0e227a80b 100644
--- a/tests/integration/staking/keeper/deterministic_test.go
+++ b/tests/integration/staking/keeper/deterministic_test.go
@@ -216,9 +216,9 @@ func bondTypeGenerator() *rapid.Generator[stakingtypes.BondStatus] {
 	})
 }
 
-func metadataGenerator() *rapid.Generator[stakingtypes.Metadata] {
-	return rapid.Custom(func(t *rapid.T) stakingtypes.Metadata {
-		return stakingtypes.Metadata{
+func metadataGenerator() *rapid.Generator[*stakingtypes.Metadata] {
+	return rapid.Custom(func(t *rapid.T) *stakingtypes.Metadata {
+		return &stakingtypes.Metadata{
 			ProfilePicUri:    generateUri(t),
 			SocialHandleUris: []string{generateUri(t), generateUri(t)},
 		}
@@ -331,7 +331,7 @@ func getStaticValidator(t *testing.T, f *deterministicFixture) stakingtypes.Vali
 			"website",
 			"securityContact",
 			"details",
-			stakingtypes.Metadata{},
+			&stakingtypes.Metadata{},
 		),
 		UnbondingHeight: 10,
 		UnbondingTime:   time.Date(2022, 10, 1, 0, 0, 0, 0, time.UTC),
@@ -367,7 +367,7 @@ func getStaticValidator2(t *testing.T, f *deterministicFixture) stakingtypes.Val
 			"website",
 			"securityContact",
 			"details",
-			stakingtypes.Metadata{},
+			&stakingtypes.Metadata{},
 		),
 		UnbondingHeight: 100132,
 		UnbondingTime:   time.Date(2025, 10, 1, 0, 0, 0, 0, time.UTC),
diff --git a/tests/integration/staking/keeper/genesis_test.go b/tests/integration/staking/keeper/genesis_test.go
index da9fd6c5d660..82bc85562ce1 100644
--- a/tests/integration/staking/keeper/genesis_test.go
+++ b/tests/integration/staking/keeper/genesis_test.go
@@ -41,7 +41,7 @@ func TestInitGenesis(t *testing.T) {
 		Status:          types.Bonded,
 		Tokens:          valTokens,
 		DelegatorShares: math.LegacyNewDecFromInt(valTokens),
-		Description:     types.NewDescription("hoop", "", "", "", "", types.Metadata{}),
+		Description:     types.NewDescription("hoop", "", "", "", "", &types.Metadata{}),
 	}
 	assert.NilError(t, f.stakingKeeper.SetValidator(f.sdkCtx, bondedVal))
 
@@ -67,7 +67,7 @@ func TestInitGenesis(t *testing.T) {
 		Status:          types.Bonded,
 		Tokens:          valTokens,
 		DelegatorShares: math.LegacyNewDecFromInt(valTokens),
-		Description:     types.NewDescription("hoop", "", "", "", "", types.Metadata{}),
+		Description:     types.NewDescription("hoop", "", "", "", "", &types.Metadata{}),
 	}
 	bondedVal2 := types.Validator{
 		OperatorAddress: sdk.ValAddress(addrs[2]).String(),
@@ -75,7 +75,7 @@ func TestInitGenesis(t *testing.T) {
 		Status:          types.Bonded,
 		Tokens:          valTokens,
 		DelegatorShares: math.LegacyNewDecFromInt(valTokens),
-		Description:     types.NewDescription("bloop", "", "", "", "", types.Metadata{}),
+		Description:     types.NewDescription("bloop", "", "", "", "", &types.Metadata{}),
 	}
 
 	// append new bonded validators to the list
@@ -148,7 +148,7 @@ func TestInitGenesis_PoolsBalanceMismatch(t *testing.T) {
 		Jailed:          false,
 		Tokens:          math.NewInt(10),
 		DelegatorShares: math.LegacyNewDecFromInt(math.NewInt(10)),
-		Description:     types.NewDescription("bloop", "", "", "", "", types.Metadata{}),
+		Description:     types.NewDescription("bloop", "", "", "", "", &types.Metadata{}),
 	}
 
 	params := types.Params{
@@ -195,7 +195,7 @@ func TestInitGenesisLargeValidatorSet(t *testing.T) {
 		validators[i], err = types.NewValidator(
 			sdk.ValAddress(addrs[i]).String(),
 			PKs[i],
-			types.NewDescription(fmt.Sprintf("#%d", i), "", "", "", "", types.Metadata{}),
+			types.NewDescription(fmt.Sprintf("#%d", i), "", "", "", "", &types.Metadata{}),
 		)
 		assert.NilError(t, err)
 		validators[i].Status = types.Bonded
diff --git a/tests/integration/staking/keeper/msg_server_test.go b/tests/integration/staking/keeper/msg_server_test.go
index f07308591a84..cea78ae9f1f7 100644
--- a/tests/integration/staking/keeper/msg_server_test.go
+++ b/tests/integration/staking/keeper/msg_server_test.go
@@ -44,7 +44,7 @@ func TestCancelUnbondingDelegation(t *testing.T) {
 	delegatorAddr := addrs[1]
 
 	// setup a new validator with bonded status
-	validator, err := types.NewValidator(valAddr.String(), PKs[0], types.NewDescription("Validator", "", "", "", "", types.Metadata{}))
+	validator, err := types.NewValidator(valAddr.String(), PKs[0], types.NewDescription("Validator", "", "", "", "", &types.Metadata{}))
 	validator.Status = types.Bonded
 	assert.NilError(t, err)
 	assert.NilError(t, f.stakingKeeper.SetValidator(ctx, validator))
diff --git a/x/staking/types/validator.go b/x/staking/types/validator.go
index 66483bb9b70e..3520137423a0 100644
--- a/x/staking/types/validator.go
+++ b/x/staking/types/validator.go
@@ -269,8 +269,10 @@ func (d Description) IsEmpty() bool {
 
 // Validate calls metadata.Validate() description.EnsureLength()
 func (d Description) Validate() (Description, error) {
-	if err := d.Metadata.Validate(); err != nil {
-		return d, err
+	if d.Metadata != nil {
+		if err := d.Metadata.Validate(); err != nil {
+			return d, err
+		}
 	}
 
 	return d.EnsureLength()

From 09e8221caf445cff20e6ebfe6d722e62a8d6cf88 Mon Sep 17 00:00:00 2001
From: Julien Robert <julien@rbrt.fr>
Date: Tue, 26 Nov 2024 18:09:01 +0100
Subject: [PATCH 5/7] fix isEmpty

---
 x/staking/types/validator.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/x/staking/types/validator.go b/x/staking/types/validator.go
index 3520137423a0..9a0785e1942e 100644
--- a/x/staking/types/validator.go
+++ b/x/staking/types/validator.go
@@ -264,7 +264,7 @@ func (d Description) EnsureLength() (Description, error) {
 
 func (d Description) IsEmpty() bool {
 	return d.Moniker == "" && d.Details == "" && d.Identity == "" && d.Website == "" && d.SecurityContact == "" &&
-		d.Metadata.ProfilePicUri == "" && len(d.Metadata.SocialHandleUris) == 0
+		d.Metadata == nil
 }
 
 // Validate calls metadata.Validate() description.EnsureLength()

From 826779dc75b8816b09ba14badd1233fc796034d0 Mon Sep 17 00:00:00 2001
From: Julien Robert <julien@rbrt.fr>
Date: Tue, 26 Nov 2024 21:45:42 +0100
Subject: [PATCH 6/7] updates

---
 x/staking/types/validator.go | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/x/staking/types/validator.go b/x/staking/types/validator.go
index 9a0785e1942e..b626d2e2ea0b 100644
--- a/x/staking/types/validator.go
+++ b/x/staking/types/validator.go
@@ -223,8 +223,10 @@ func (d Description) UpdateDescription(d2 Description) (Description, error) {
 		d2.Details = d.Details
 	}
 
-	if d2.Metadata.ProfilePicUri == DoNotModifyDesc {
-		d2.Metadata.ProfilePicUri = d.Metadata.ProfilePicUri
+	if d2.Metadata != nil {
+		if d2.Metadata.ProfilePicUri == DoNotModifyDesc {
+			d2.Metadata.ProfilePicUri = d.Metadata.ProfilePicUri
+		}
 	}
 
 	return NewDescription(
@@ -264,7 +266,7 @@ func (d Description) EnsureLength() (Description, error) {
 
 func (d Description) IsEmpty() bool {
 	return d.Moniker == "" && d.Details == "" && d.Identity == "" && d.Website == "" && d.SecurityContact == "" &&
-		d.Metadata == nil
+		(d.Metadata == nil || d.Metadata.ProfilePicUri == "" && len(d.Metadata.SocialHandleUris) == 0)
 }
 
 // Validate calls metadata.Validate() description.EnsureLength()

From 6edb300a1af468068374ba1b387b686f11143978 Mon Sep 17 00:00:00 2001
From: Julien Robert <julien@rbrt.fr>
Date: Wed, 27 Nov 2024 00:33:07 +0100
Subject: [PATCH 7/7] updates

---
 x/staking/keeper/keeper_test.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/x/staking/keeper/keeper_test.go b/x/staking/keeper/keeper_test.go
index 9043e261d25d..ebc252551aea 100644
--- a/x/staking/keeper/keeper_test.go
+++ b/x/staking/keeper/keeper_test.go
@@ -481,7 +481,7 @@ func (s *KeeperTestSuite) TestValidatorsMigrationToColls() {
 			// legacy Set method
 			s.ctx.KVStore(s.key).Set(getValidatorKey(valAddrs[i]), valBz)
 		},
-		"55565aebbb67e1de08d0f17634ad168c68eae74f5cc9074e3a1ec4d1fbff16e5",
+		"d8acdcf8b7c8e17f3e83f0a4c293f89ad619a5dcb14d232911ccc5da15653177",
 	)
 	s.Require().NoError(err)
 
@@ -507,7 +507,7 @@ func (s *KeeperTestSuite) TestValidatorsMigrationToColls() {
 			err := s.stakingKeeper.SetValidator(s.ctx, val)
 			s.Require().NoError(err)
 		},
-		"55565aebbb67e1de08d0f17634ad168c68eae74f5cc9074e3a1ec4d1fbff16e5",
+		"d8acdcf8b7c8e17f3e83f0a4c293f89ad619a5dcb14d232911ccc5da15653177",
 	)
 	s.Require().NoError(err)
 }