feat(community): add switchover param (#1704)

* add community params type * add get/set params methods * add community genesis state type * add community init/export genesis * add querier methods for params * add query cli cmd * update changelog * update protonet genesis * Add `RewardsPerSecond` param to `x/community` module (#1707) * Add RewardsPerSecond param to community * Update rewards per second param to int * Add rewards_per_second to protonet genesis * Use default rewards per second of 744191 * Include value if negative in Validate error * Rename RewardsPerSecond param to StakingRewardsPerSecond * Add changelog entry * Add param migration, update consensus version to 2 * Update proto docs * Update staking_rewards_per_second param name in protonet genesis (#1730) * Update godoc Co-authored-by: Robert Pirtle <Astropirtle@gmail.com> * add genesis state tests * document what 0 upgrade time means * update kvtool to include new params --------- Co-authored-by: drklee3 <derrick@dlee.dev> Co-authored-by: Robert Pirtle <Astropirtle@gmail.com>
2024-12-24 23:35:19 +00:00 · 2023-09-22 09:05:12 -07:00 · 2023-09-22 09:05:12 -07:00 · bc260d8091
commit bc260d8091
parent 0598b99063
30 changed files with 1893 additions and 54 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -39,10 +39,15 @@ Ref: https://keepachangelog.com/en/1.0.0/
 ### Features
 - (metrics) [#1668] Adds non-state breaking x/metrics module for custom telemetry.
 - (metrics) [#1669] Add performance timing metrics to all Begin/EndBlockers
+- (community) [#1704] Add module params

 ### Bug Fixes
 - (evmutil) [#1655] Initialize x/evmutil module account in InitGenesis

+## State Machine Breaking
+- (community) [#1704] Add param to control when inflation will be disabled
+- (community) [#1707] Default staking rewards per second set to `744191`
+
 ## [v0.24.0]

 ### Features
@ -280,6 +285,7 @@ the [changelog](https://github.com/cosmos/cosmos-sdk/blob/v0.38.4/CHANGELOG.md).
 - [#257](https://github.com/Kava-Labs/kava/pulls/257) Include scripts to run
  large-scale simulations remotely using aws-batch

+[#1707]: https://github.com/Kava-Labs/kava/pull/1707
 [#1668]: https://github.com/Kava-Labs/kava/pull/1668
 [#1669]: https://github.com/Kava-Labs/kava/pull/1669
 [#1655]: https://github.com/Kava-Labs/kava/pull/1655
--- a/app/app.go
+++ b/app/app.go
@ -372,7 +372,7 @@ func NewApp(
 		evmtypes.StoreKey, feemarkettypes.StoreKey, authzkeeper.StoreKey,
 		capabilitytypes.StoreKey, kavadisttypes.StoreKey, auctiontypes.StoreKey,
 		issuancetypes.StoreKey, bep3types.StoreKey, pricefeedtypes.StoreKey,
-		swaptypes.StoreKey, cdptypes.StoreKey, hardtypes.StoreKey,
+		swaptypes.StoreKey, cdptypes.StoreKey, hardtypes.StoreKey, communitytypes.StoreKey,
 		committeetypes.StoreKey, incentivetypes.StoreKey, evmutiltypes.StoreKey,
 		savingstypes.StoreKey, earntypes.StoreKey, minttypes.StoreKey,
 	)
@ -637,6 +637,8 @@ func NewApp(

 	// x/community's deposit/withdraw to lend proposals depend on hard keeper.
 	app.communityKeeper = communitykeeper.NewKeeper(
+		appCodec,
+		keys[communitytypes.StoreKey],
 		app.accountKeeper,
 		app.bankKeeper,
 		&cdpKeeper,
--- a/ci/env/kava-protonet/KAVA.VERSION
+++ b/ci/env/kava-protonet/KAVA.VERSION
@ -1 +1 @@
-a967d2fdda299ec8e1e3b99fb55bd06ecfdb0469
+master
--- a/ci/env/kava-protonet/genesis.json
+++ b/ci/env/kava-protonet/genesis.json
@ -1315,7 +1315,10 @@
      "votes": []
    },
    "community": {
-      "params": {}
+      "params": {
+        "upgrade_time_disable_inflation": "2023-11-01T00:00:00Z",
+        "staking_rewards_per_second": "744191"
+      }
    },
    "crisis": {
      "constant_fee": {
--- a/docs/core/proto-docs.md
+++ b/docs/core/proto-docs.md
@ -181,6 +181,12 @@
  
    - [Msg](#kava.committee.v1beta1.Msg)
  
+- [kava/community/v1beta1/params.proto](#kava/community/v1beta1/params.proto)
+    - [Params](#kava.community.v1beta1.Params)
+  
+- [kava/community/v1beta1/genesis.proto](#kava/community/v1beta1/genesis.proto)
+    - [GenesisState](#kava.community.v1beta1.GenesisState)
+  
 - [kava/community/v1beta1/proposal.proto](#kava/community/v1beta1/proposal.proto)
    - [CommunityCDPRepayDebtProposal](#kava.community.v1beta1.CommunityCDPRepayDebtProposal)
    - [CommunityCDPWithdrawCollateralProposal](#kava.community.v1beta1.CommunityCDPWithdrawCollateralProposal)
@ -190,6 +196,8 @@
 - [kava/community/v1beta1/query.proto](#kava/community/v1beta1/query.proto)
    - [QueryBalanceRequest](#kava.community.v1beta1.QueryBalanceRequest)
    - [QueryBalanceResponse](#kava.community.v1beta1.QueryBalanceResponse)
+    - [QueryParamsRequest](#kava.community.v1beta1.QueryParamsRequest)
+    - [QueryParamsResponse](#kava.community.v1beta1.QueryParamsResponse)
    - [QueryTotalBalanceRequest](#kava.community.v1beta1.QueryTotalBalanceRequest)
    - [QueryTotalBalanceResponse](#kava.community.v1beta1.QueryTotalBalanceResponse)
  
@ -2882,6 +2890,69 @@ Msg defines the committee Msg service



+<a name="kava/community/v1beta1/params.proto"></a>
+<p align="right"><a href="#top">Top</a></p>
+
+## kava/community/v1beta1/params.proto
+
+
+
+<a name="kava.community.v1beta1.Params"></a>
+
+### Params
+Params defines the parameters of the community module.
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| `upgrade_time_disable_inflation` | [google.protobuf.Timestamp](#google.protobuf.Timestamp) |  | upgrade_time_disable_inflation is the time at which to disable mint and kavadist module inflation. If set to 0, inflation will be disabled from block 1. |
+| `staking_rewards_per_second` | [string](#string) |  | staking_rewards_per_second is the amount paid out to delegators each block from the community account |
+
+
+
+
+
+ <!-- end messages -->
+
+ <!-- end enums -->
+
+ <!-- end HasExtensions -->
+
+ <!-- end services -->
+
+
+
+<a name="kava/community/v1beta1/genesis.proto"></a>
+<p align="right"><a href="#top">Top</a></p>
+
+## kava/community/v1beta1/genesis.proto
+
+
+
+<a name="kava.community.v1beta1.GenesisState"></a>
+
+### GenesisState
+GenesisState defines the community module's genesis state.
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| `params` | [Params](#kava.community.v1beta1.Params) |  | params defines all the paramaters related to commmunity |
+
+
+
+
+
+ <!-- end messages -->
+
+ <!-- end enums -->
+
+ <!-- end HasExtensions -->
+
+ <!-- end services -->
+
+
+
 <a name="kava/community/v1beta1/proposal.proto"></a>
 <p align="right"><a href="#top">Top</a></p>

@ -3002,6 +3073,31 @@ QueryBalanceResponse defines the response type for querying x/community balance.



+<a name="kava.community.v1beta1.QueryParamsRequest"></a>
+
+### QueryParamsRequest
+QueryParams defines the request type for querying x/community params.
+
+
+
+
+
+
+<a name="kava.community.v1beta1.QueryParamsResponse"></a>
+
+### QueryParamsResponse
+QueryParamsResponse defines the response type for querying x/community params.
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| `params` | [Params](#kava.community.v1beta1.Params) |  | params represents the community module parameters |
+
+
+
+
+
+
 <a name="kava.community.v1beta1.QueryTotalBalanceRequest"></a>

 ### QueryTotalBalanceRequest
@ -3041,6 +3137,7 @@ Query defines the gRPC querier service for x/community.

 | Method Name | Request Type | Response Type | Description | HTTP Verb | Endpoint |
 | ----------- | ------------ | ------------- | ------------| ------- | -------- |
+| `Params` | [QueryParamsRequest](#kava.community.v1beta1.QueryParamsRequest) | [QueryParamsResponse](#kava.community.v1beta1.QueryParamsResponse) | Params queires the module params. | GET|/kava/community/v1beta1/params|
 | `Balance` | [QueryBalanceRequest](#kava.community.v1beta1.QueryBalanceRequest) | [QueryBalanceResponse](#kava.community.v1beta1.QueryBalanceResponse) | Balance queries the balance of all coins of x/community module. | GET|/kava/community/v1beta1/balance|
 | `TotalBalance` | [QueryTotalBalanceRequest](#kava.community.v1beta1.QueryTotalBalanceRequest) | [QueryTotalBalanceResponse](#kava.community.v1beta1.QueryTotalBalanceResponse) | TotalBalance queries the balance of all coins, including x/distribution, x/community, and supplied balances. | GET|/kava/community/v1beta1/total_balance|

--- a/proto/kava/community/v1beta1/genesis.proto
+++ b/proto/kava/community/v1beta1/genesis.proto
@ -0,0 +1,13 @@
+syntax = "proto3";
+package kava.community.v1beta1;
+
+import "gogoproto/gogo.proto";
+import "kava/community/v1beta1/params.proto";
+
+option go_package = "github.com/kava-labs/kava/x/community/types";
+
+// GenesisState defines the community module's genesis state.
+message GenesisState {
+  // params defines all the paramaters related to commmunity
+  Params params = 1 [(gogoproto.nullable) = false];
+}
--- a/proto/kava/community/v1beta1/params.proto
+++ b/proto/kava/community/v1beta1/params.proto
@ -0,0 +1,25 @@
+syntax = "proto3";
+package kava.community.v1beta1;
+
+import "cosmos_proto/cosmos.proto";
+import "gogoproto/gogo.proto";
+import "google/protobuf/timestamp.proto";
+
+option go_package = "github.com/kava-labs/kava/x/community/types";
+
+// Params defines the parameters of the community module.
+message Params {
+  // upgrade_time_disable_inflation is the time at which to disable mint and kavadist module inflation.
+  // If set to 0, inflation will be disabled from block 1.
+  google.protobuf.Timestamp upgrade_time_disable_inflation = 1 [
+    (gogoproto.stdtime) = true,
+    (gogoproto.nullable) = false
+  ];
+
+  // staking_rewards_per_second is the amount paid out to delegators each block from the community account
+  string staking_rewards_per_second = 2 [
+    (cosmos_proto.scalar) = "cosmos.Int",
+    (gogoproto.customtype) = "cosmossdk.io/math.Int",
+    (gogoproto.nullable) = false
+  ];
+}
--- a/proto/kava/community/v1beta1/query.proto
+++ b/proto/kava/community/v1beta1/query.proto
@ -4,11 +4,17 @@ package kava.community.v1beta1;
 import "cosmos/base/v1beta1/coin.proto";
 import "gogoproto/gogo.proto";
 import "google/api/annotations.proto";
+import "kava/community/v1beta1/params.proto";

 option go_package = "github.com/kava-labs/kava/x/community/types";

 // Query defines the gRPC querier service for x/community.
 service Query {
+  // Params queires the module params.
+  rpc Params(QueryParamsRequest) returns (QueryParamsResponse) {
+    option (google.api.http).get = "/kava/community/v1beta1/params";
+  }
+
  // Balance queries the balance of all coins of x/community module.
  rpc Balance(QueryBalanceRequest) returns (QueryBalanceResponse) {
    option (google.api.http).get = "/kava/community/v1beta1/balance";
@ -21,6 +27,15 @@ service Query {
  }
 }

+// QueryParams defines the request type for querying x/community params.
+message QueryParamsRequest {}
+
+// QueryParamsResponse defines the response type for querying x/community params.
+message QueryParamsResponse {
+  // params represents the community module parameters
+  Params params = 1 [(gogoproto.nullable) = false];
+}
+
 // QueryBalanceRequest defines the request type for querying x/community balance.
 message QueryBalanceRequest {}

--- a/tests/e2e/kvtool
+++ b/tests/e2e/kvtool
@ -1 +1 @@
-Subproject commit b093fc9f2a28cf57b4a6924f45919edcfe551eaf
+Subproject commit 434f7d12322e4713429fe2cc73027938e11eb5a0
--- a/x/community/client/cli/query.go
+++ b/x/community/client/cli/query.go
@ -1,10 +1,13 @@
 package cli

 import (
+	"context"
+
 	"github.com/spf13/cobra"

 	"github.com/cosmos/cosmos-sdk/client"
 	"github.com/cosmos/cosmos-sdk/client/flags"
+
 	"github.com/kava-labs/kava/x/community/types"
 )

@ -19,7 +22,8 @@ func GetQueryCmd() *cobra.Command {
 	}

 	commands := []*cobra.Command{
-		GetCmdQueryBalance(),
+		getCmdQueryParams(),
+		getCmdQueryBalance(),
 	}

 	for _, cmd := range commands {
@ -31,8 +35,32 @@ func GetQueryCmd() *cobra.Command {
 	return communityQueryCmd
 }

-// GetCmdQueryBalance implements a command to return the current community pool balance.
-func GetCmdQueryBalance() *cobra.Command {
+func getCmdQueryParams() *cobra.Command {
+	return &cobra.Command{
+		Use:   "params",
+		Short: "get the community module parameters",
+		Long:  "Get the current community module parameters.",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			clientCtx, err := client.GetClientQueryContext(cmd)
+			if err != nil {
+				return err
+			}
+
+			queryClient := types.NewQueryClient(clientCtx)
+
+			res, err := queryClient.Params(context.Background(), &types.QueryParamsRequest{})
+			if err != nil {
+				return err
+			}
+
+			return clientCtx.PrintProto(&res.Params)
+		},
+	}
+}
+
+// getCmdQueryBalance implements a command to return the current community pool balance.
+func getCmdQueryBalance() *cobra.Command {
 	return &cobra.Command{
 		Use:   "balance",
 		Short: "Query the current balance of the community module account",
--- a/x/community/genesis.go
+++ b/x/community/genesis.go
@ -10,10 +10,22 @@ import (
 	"github.com/kava-labs/kava/x/community/types"
 )

-// InitGenesis initializes the community module account
-func InitGenesis(ctx sdk.Context, k keeper.Keeper, ak types.AccountKeeper) {
+// InitGenesis initializes the community module account and stores the genesis state
+func InitGenesis(ctx sdk.Context, k keeper.Keeper, ak types.AccountKeeper, gs types.GenesisState) {
 	// check if the module account exists
 	if moduleAcc := ak.GetModuleAccount(ctx, types.ModuleAccountName); moduleAcc == nil {
 		panic(fmt.Sprintf("%s module account has not been set", types.ModuleAccountName))
 	}
+
+	k.SetParams(ctx, gs.Params)
+}
+
+// ExportGenesis exports the store to a genesis state
+func ExportGenesis(ctx sdk.Context, k keeper.Keeper) types.GenesisState {
+	params, found := k.GetParams(ctx)
+	if !found {
+		params = types.Params{}
+	}
+
+	return types.NewGenesisState(params)
 }
--- a/x/community/genesis_test.go
+++ b/x/community/genesis_test.go
@ -2,12 +2,16 @@ package community_test

 import (
 	"testing"
+	"time"

 	"github.com/stretchr/testify/suite"

+	sdkmath "cosmossdk.io/math"
 	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
+
 	"github.com/kava-labs/kava/x/community"
 	"github.com/kava-labs/kava/x/community/testutil"
+	"github.com/kava-labs/kava/x/community/types"
 )

 type genesisTestSuite struct {
@ -23,12 +27,18 @@ func TestGenesisTestSuite(t *testing.T) {
 }

 func (suite *genesisTestSuite) TestInitGenesis() {
-	suite.SetupTest()

 	accountKeeper := suite.App.GetAccountKeeper()

+	genesisState := types.NewGenesisState(
+		types.NewParams(
+			time.Date(1998, 1, 1, 0, 0, 0, 0, time.UTC),
+			sdkmath.NewInt(1000),
+		),
+	)
+
 	suite.NotPanics(func() {
-		community.InitGenesis(suite.Ctx, suite.Keeper, accountKeeper)
+		community.InitGenesis(suite.Ctx, suite.Keeper, accountKeeper, genesisState)
 	})

 	// check for module account this way b/c GetModuleAccount creates if not existing.
@ -36,4 +46,34 @@ func (suite *genesisTestSuite) TestInitGenesis() {
 	suite.NotNil(acc)
 	_, ok := acc.(authtypes.ModuleAccountI)
 	suite.True(ok)
+
+	storedParams, found := suite.App.GetCommunityKeeper().GetParams(suite.Ctx)
+	suite.True(found)
+	suite.Equal(genesisState.Params, storedParams)
+}
+
+func (suite *genesisTestSuite) TestExportGenesis() {
+	params := types.NewParams(
+		time.Date(1998, 1, 1, 0, 0, 0, 0, time.UTC),
+		sdkmath.NewInt(1000),
+	)
+	suite.Keeper.SetParams(suite.Ctx, params)
+
+	genesisState := community.ExportGenesis(suite.Ctx, suite.Keeper)
+
+	suite.Equal(params, genesisState.Params)
+}
+
+func (suite *genesisTestSuite) TestInitExportIsLossless() {
+	genesisState := types.NewGenesisState(
+		types.NewParams(
+			time.Date(1998, 1, 1, 0, 0, 0, 0, time.UTC),
+			sdkmath.NewInt(1000),
+		),
+	)
+
+	community.InitGenesis(suite.Ctx, suite.Keeper, suite.App.GetAccountKeeper(), genesisState)
+	exportedState := community.ExportGenesis(suite.Ctx, suite.Keeper)
+
+	suite.Equal(genesisState, exportedState)
 }
--- a/x/community/keeper/grpc_query.go
+++ b/x/community/keeper/grpc_query.go
@ -4,6 +4,9 @@ import (
 	"context"

 	sdk "github.com/cosmos/cosmos-sdk/types"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+
 	"github.com/kava-labs/kava/x/community/types"
 )

@ -18,6 +21,20 @@ func NewQueryServerImpl(k Keeper) types.QueryServer {
 	return &queryServer{keeper: k}
 }

+// Params implements the gRPC service handler for querying x/community params.
+func (s queryServer) Params(c context.Context, req *types.QueryParamsRequest) (*types.QueryParamsResponse, error) {
+	ctx := sdk.UnwrapSDKContext(c)
+
+	params, found := s.keeper.GetParams(ctx)
+	if !found {
+		return nil, status.Error(codes.NotFound, "params not found")
+	}
+
+	return &types.QueryParamsResponse{
+		Params: params,
+	}, nil
+}
+
 // Balance implements the gRPC service handler for querying x/community balance.
 func (s queryServer) Balance(c context.Context, _ *types.QueryBalanceRequest) (*types.QueryBalanceResponse, error) {
 	ctx := sdk.UnwrapSDKContext(c)
--- a/x/community/keeper/grpc_query_test.go
+++ b/x/community/keeper/grpc_query_test.go
@ -3,6 +3,7 @@ package keeper_test
 import (
 	"context"
 	"testing"
+	"time"

 	sdkmath "cosmossdk.io/math"
 	"github.com/cosmos/cosmos-sdk/baseapp"
@ -32,6 +33,23 @@ func TestGrpcQueryTestSuite(t *testing.T) {
 	suite.Run(t, new(grpcQueryTestSuite))
 }

+func (suite *grpcQueryTestSuite) TestGrpcQueryParams() {
+	p := types.NewParams(
+		time.Date(1998, 1, 1, 0, 0, 0, 0, time.UTC),
+		sdkmath.NewInt(1000),
+	)
+	suite.Keeper.SetParams(suite.Ctx, p)
+
+	res, err := suite.queryClient.Params(context.Background(), &types.QueryParamsRequest{})
+	suite.Require().NoError(err)
+	suite.Equal(
+		types.QueryParamsResponse{
+			Params: p,
+		},
+		*res,
+	)
+}
+
 func (suite *grpcQueryTestSuite) TestGrpcQueryBalance() {
 	var expCoins sdk.Coins

--- a/x/community/keeper/keeper.go
+++ b/x/community/keeper/keeper.go
@ -3,14 +3,19 @@ package keeper
 import (
 	"fmt"

+	"github.com/cosmos/cosmos-sdk/codec"
+	storetypes "github.com/cosmos/cosmos-sdk/store/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/tendermint/tendermint/libs/log"

-	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/kava-labs/kava/x/community/types"
 )

 // Keeper of the community store
 type Keeper struct {
+	key storetypes.StoreKey
+	cdc codec.Codec
+
 	bankKeeper    types.BankKeeper
 	cdpKeeper     types.CdpKeeper
 	distrKeeper   types.DistributionKeeper
@ -21,7 +26,15 @@ type Keeper struct {
 }

 // NewKeeper creates a new community Keeper instance
-func NewKeeper(ak types.AccountKeeper, bk types.BankKeeper, ck types.CdpKeeper, dk types.DistributionKeeper, hk types.HardKeeper) Keeper {
+func NewKeeper(
+	cdc codec.Codec,
+	key storetypes.StoreKey,
+	ak types.AccountKeeper,
+	bk types.BankKeeper,
+	ck types.CdpKeeper,
+	dk types.DistributionKeeper,
+	hk types.HardKeeper,
+) Keeper {
 	// ensure community module account is set
 	addr := ak.GetModuleAddress(types.ModuleAccountName)
 	if addr == nil {
@ -33,6 +46,9 @@ func NewKeeper(ak types.AccountKeeper, bk types.BankKeeper, ck types.CdpKeeper,
 	}

 	return Keeper{
+		key: key,
+		cdc: cdc,
+
 		bankKeeper:    bk,
 		cdpKeeper:     ck,
 		distrKeeper:   dk,
--- a/x/community/keeper/migrations.go
+++ b/x/community/keeper/migrations.go
@ -0,0 +1,27 @@
+package keeper
+
+import (
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	v2 "github.com/kava-labs/kava/x/community/migrations/v2"
+)
+
+// Migrator is a struct for handling in-place store migrations.
+type Migrator struct {
+	keeper Keeper
+}
+
+// NewMigrator returns a new Migrator.
+func NewMigrator(keeper Keeper) Migrator {
+	return Migrator{
+		keeper: keeper,
+	}
+}
+
+// Migrate1to2 migrates from version 1 to 2.
+func (m Migrator) Migrate1to2(ctx sdk.Context) error {
+	return v2.Migrate(
+		ctx,
+		ctx.KVStore(m.keeper.key),
+		m.keeper.cdc,
+	)
+}
--- a/x/community/keeper/params.go
+++ b/x/community/keeper/params.go
@ -0,0 +1,36 @@
+package keeper
+
+import (
+	"fmt"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+
+	"github.com/kava-labs/kava/x/community/types"
+)
+
+// GetParams returns the params from the store
+func (k Keeper) GetParams(ctx sdk.Context) (types.Params, bool) {
+	store := ctx.KVStore(k.key)
+
+	bz := store.Get(types.ParamsKey)
+	if bz == nil {
+		return types.Params{}, false
+	}
+
+	params := types.Params{}
+	k.cdc.MustUnmarshal(bz, &params)
+
+	return params, true
+}
+
+// SetParams sets params on the store
+func (k Keeper) SetParams(ctx sdk.Context, params types.Params) {
+	if err := params.Validate(); err != nil {
+		panic(fmt.Sprintf("invalid params: %s", err))
+	}
+
+	store := ctx.KVStore(k.key)
+	bz := k.cdc.MustMarshal(&params)
+
+	store.Set(types.ParamsKey, bz)
+}
--- a/x/community/keeper/params_test.go
+++ b/x/community/keeper/params_test.go
@ -0,0 +1,74 @@
+package keeper_test
+
+import (
+	"testing"
+	"time"
+
+	sdkmath "cosmossdk.io/math"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/stretchr/testify/suite"
+	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
+	tmtime "github.com/tendermint/tendermint/types/time"
+
+	"github.com/kava-labs/kava/app"
+	"github.com/kava-labs/kava/x/community/keeper"
+	"github.com/kava-labs/kava/x/community/types"
+)
+
+// Test suite used for all store tests
+type StoreTestSuite struct {
+	suite.Suite
+
+	App    app.TestApp
+	Ctx    sdk.Context
+	Keeper keeper.Keeper
+}
+
+// The default state used by each test
+func (suite *StoreTestSuite) SetupTest() {
+	app.SetSDKConfig()
+	suite.App = app.NewTestApp()
+	suite.Ctx = suite.App.NewContext(true, tmproto.Header{Height: 1, Time: tmtime.Now()})
+	suite.Keeper = suite.App.GetCommunityKeeper()
+}
+
+func TestStoreTestSuite(t *testing.T) {
+	suite.Run(t, new(StoreTestSuite))
+}
+
+func (suite *StoreTestSuite) TestGetSetParams() {
+	suite.Run("get params returns not found on empty store", func() {
+		_, found := suite.Keeper.GetParams(suite.Ctx)
+		suite.Require().False(found)
+	})
+
+	suite.Run("set params cannot store invalid params", func() {
+		invalid := types.Params{UpgradeTimeDisableInflation: time.Date(-1, 1, 1, 0, 0, 0, 0, time.UTC)}
+		suite.Panics(func() {
+			suite.Keeper.SetParams(suite.Ctx, invalid)
+		})
+	})
+
+	suite.Run("get params returns stored params", func() {
+		suite.Keeper.SetParams(suite.Ctx, types.DefaultParams())
+
+		storedParams, found := suite.Keeper.GetParams(suite.Ctx)
+		suite.True(found)
+		suite.Equal(types.DefaultParams(), storedParams)
+	})
+
+	suite.Run("set overwrite previous value", func() {
+		suite.Keeper.SetParams(suite.Ctx, types.DefaultParams())
+
+		params := types.NewParams(
+			time.Date(1998, 1, 1, 0, 0, 0, 0, time.UTC),
+			sdkmath.NewInt(1000),
+		)
+		suite.Keeper.SetParams(suite.Ctx, params)
+
+		storedParams, found := suite.Keeper.GetParams(suite.Ctx)
+		suite.True(found)
+		suite.NotEqual(params, types.DefaultParams())
+		suite.Equal(params, storedParams)
+	})
+}
--- a/x/community/migrations/v2/store.go
+++ b/x/community/migrations/v2/store.go
@ -0,0 +1,38 @@
+package v2
+
+import (
+	"time"
+
+	storetypes "github.com/cosmos/cosmos-sdk/store/types"
+
+	"github.com/cosmos/cosmos-sdk/codec"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/kava-labs/kava/x/community/types"
+)
+
+const (
+	ModuleName = "mint"
+)
+
+// Migrate migrates the x/community module state from the consensus version 1 to
+// version 2. Specifically, sets new parameters in the module state.
+func Migrate(
+	ctx sdk.Context,
+	store storetypes.KVStore,
+	cdc codec.BinaryCodec,
+) error {
+	params := types.NewParams(
+		// 2023-11-01T00:00:00Z
+		time.Date(2023, 11, 1, 0, 0, 0, 0, time.UTC),
+		sdk.NewInt(744191),
+	)
+
+	if err := params.Validate(); err != nil {
+		return err
+	}
+
+	bz := cdc.MustMarshal(&params)
+	store.Set(types.ParamsKey, bz)
+
+	return nil
+}
--- a/x/community/migrations/v2/store_test.go
+++ b/x/community/migrations/v2/store_test.go
@ -0,0 +1,48 @@
+package v2_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/cosmos/cosmos-sdk/testutil"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/kava-labs/kava/app"
+	v2 "github.com/kava-labs/kava/x/community/migrations/v2"
+	"github.com/kava-labs/kava/x/community/types"
+)
+
+func TestMigrateStore(t *testing.T) {
+	tApp := app.NewTestApp()
+	cdc := tApp.AppCodec()
+	storeKey := sdk.NewKVStoreKey("community")
+	ctx := testutil.DefaultContext(storeKey, sdk.NewTransientStoreKey("transient_test"))
+	store := ctx.KVStore(storeKey)
+
+	require.Nil(
+		t,
+		store.Get(types.ParamsKey),
+		"params shouldn't exist in store before migration",
+	)
+
+	require.NoError(t, v2.Migrate(ctx, store, cdc))
+
+	paramsBytes := store.Get(types.ParamsKey)
+	require.NotNil(t, paramsBytes, "params should be in store after migration")
+
+	var params types.Params
+	cdc.MustUnmarshal(paramsBytes, &params)
+
+	t.Logf("params: %+v", params)
+
+	require.Equal(
+		t,
+		types.NewParams(
+			time.Date(2023, 11, 1, 0, 0, 0, 0, time.UTC),
+			sdk.NewInt(744191),
+		),
+		params,
+		"params should be correct after migration",
+	)
+}
--- a/x/community/module.go
+++ b/x/community/module.go
@ -3,6 +3,7 @@ package community
 import (
 	"context"
 	"encoding/json"
+	"fmt"

 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
@ -20,6 +21,9 @@ import (
 	"github.com/kava-labs/kava/x/community/types"
 )

+// ConsensusVersion defines the current module consensus version.
+const ConsensusVersion = 2
+
 var (
 	_ module.AppModule      = AppModule{}
 	_ module.AppModuleBasic = AppModuleBasic{}
@ -40,13 +44,19 @@ func (AppModuleBasic) RegisterLegacyAminoCodec(cdc *codec.LegacyAmino) {
 }

 // DefaultGenesis default genesis state
-func (AppModuleBasic) DefaultGenesis(_ codec.JSONCodec) json.RawMessage {
-	return []byte("{}")
+func (AppModuleBasic) DefaultGenesis(cdc codec.JSONCodec) json.RawMessage {
+	gs := types.DefaultGenesisState()
+	return cdc.MustMarshalJSON(&gs)
 }

 // ValidateGenesis module validate genesis
-func (AppModuleBasic) ValidateGenesis(_ codec.JSONCodec, _ client.TxEncodingConfig, _ json.RawMessage) error {
-	return nil
+func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config client.TxEncodingConfig, bz json.RawMessage) error {
+	var gs types.GenesisState
+	err := cdc.UnmarshalJSON(bz, &gs)
+	if err != nil {
+		return err
+	}
+	return gs.Validate()
 }

 // RegisterInterfaces implements InterfaceModule.RegisterInterfaces
@ -113,23 +123,32 @@ func (am AppModule) LegacyQuerierHandler(_ *codec.LegacyAmino) sdk.Querier {
 }

 // ConsensusVersion implements AppModule/ConsensusVersion.
-func (AppModule) ConsensusVersion() uint64 { return 1 }
+func (AppModule) ConsensusVersion() uint64 { return ConsensusVersion }

 // RegisterServices registers module services.
 func (am AppModule) RegisterServices(cfg module.Configurator) {
 	types.RegisterMsgServer(cfg.MsgServer(), keeper.NewMsgServerImpl(am.keeper))
 	types.RegisterQueryServer(cfg.QueryServer(), keeper.NewQueryServerImpl(am.keeper))
+
+	m := keeper.NewMigrator(am.keeper)
+	if err := cfg.RegisterMigration(types.ModuleName, 1, m.Migrate1to2); err != nil {
+		panic(fmt.Sprintf("failed to migrate x/community from version 1 to 2: %v", err))
+	}
 }

 // InitGenesis module init-genesis
-func (am AppModule) InitGenesis(ctx sdk.Context, _ codec.JSONCodec, _ json.RawMessage) []abci.ValidatorUpdate {
-	InitGenesis(ctx, am.keeper, am.accountKeeper)
+func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, gs json.RawMessage) []abci.ValidatorUpdate {
+	var genState types.GenesisState
+	cdc.MustUnmarshalJSON(gs, &genState)
+
+	InitGenesis(ctx, am.keeper, am.accountKeeper, genState)
 	return []abci.ValidatorUpdate{}
 }

 // ExportGenesis module export genesis
-func (am AppModule) ExportGenesis(_ sdk.Context, cdc codec.JSONCodec) json.RawMessage {
-	return am.DefaultGenesis(cdc)
+func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.RawMessage {
+	gs := ExportGenesis(ctx, am.keeper)
+	return cdc.MustMarshalJSON(&gs)
 }

 // BeginBlock module begin-block
--- a/x/community/types/genesis.go
+++ b/x/community/types/genesis.go
@ -0,0 +1,20 @@
+package types
+
+// NewGenesisState returns a new genesis state object
+func NewGenesisState(params Params) GenesisState {
+	return GenesisState{
+		Params: params,
+	}
+}
+
+// DefaultGenesisState returns default genesis state
+func DefaultGenesisState() GenesisState {
+	return NewGenesisState(
+		DefaultParams(),
+	)
+}
+
+// Validate checks the params are valid
+func (gs GenesisState) Validate() error {
+	return gs.Params.Validate()
+}
--- a/x/community/types/genesis.pb.go
+++ b/x/community/types/genesis.pb.go
@ -0,0 +1,324 @@
+// Code generated by protoc-gen-gogo. DO NOT EDIT.
+// source: kava/community/v1beta1/genesis.proto
+
+package types
+
+import (
+	fmt "fmt"
+	_ "github.com/gogo/protobuf/gogoproto"
+	proto "github.com/gogo/protobuf/proto"
+	io "io"
+	math "math"
+	math_bits "math/bits"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
+
+// GenesisState defines the community module's genesis state.
+type GenesisState struct {
+	// params defines all the paramaters related to commmunity
+	Params Params `protobuf:"bytes,1,opt,name=params,proto3" json:"params"`
+}
+
+func (m *GenesisState) Reset()         { *m = GenesisState{} }
+func (m *GenesisState) String() string { return proto.CompactTextString(m) }
+func (*GenesisState) ProtoMessage()    {}
+func (*GenesisState) Descriptor() ([]byte, []int) {
+	return fileDescriptor_ccf84d82ea3861e0, []int{0}
+}
+func (m *GenesisState) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *GenesisState) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_GenesisState.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *GenesisState) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GenesisState.Merge(m, src)
+}
+func (m *GenesisState) XXX_Size() int {
+	return m.Size()
+}
+func (m *GenesisState) XXX_DiscardUnknown() {
+	xxx_messageInfo_GenesisState.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GenesisState proto.InternalMessageInfo
+
+func (m *GenesisState) GetParams() Params {
+	if m != nil {
+		return m.Params
+	}
+	return Params{}
+}
+
+func init() {
+	proto.RegisterType((*GenesisState)(nil), "kava.community.v1beta1.GenesisState")
+}
+
+func init() {
+	proto.RegisterFile("kava/community/v1beta1/genesis.proto", fileDescriptor_ccf84d82ea3861e0)
+}
+
+var fileDescriptor_ccf84d82ea3861e0 = []byte{
+	// 201 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x52, 0xc9, 0x4e, 0x2c, 0x4b,
+	0xd4, 0x4f, 0xce, 0xcf, 0xcd, 0x2d, 0xcd, 0xcb, 0x2c, 0xa9, 0xd4, 0x2f, 0x33, 0x4c, 0x4a, 0x2d,
+	0x49, 0x34, 0xd4, 0x4f, 0x4f, 0xcd, 0x4b, 0x2d, 0xce, 0x2c, 0xd6, 0x2b, 0x28, 0xca, 0x2f, 0xc9,
+	0x17, 0x12, 0x03, 0xa9, 0xd2, 0x83, 0xab, 0xd2, 0x83, 0xaa, 0x92, 0x12, 0x49, 0xcf, 0x4f, 0xcf,
+	0x07, 0x2b, 0xd1, 0x07, 0xb1, 0x20, 0xaa, 0xa5, 0x94, 0x71, 0x98, 0x59, 0x90, 0x58, 0x94, 0x98,
+	0x0b, 0x35, 0x52, 0xc9, 0x87, 0x8b, 0xc7, 0x1d, 0x62, 0x47, 0x70, 0x49, 0x62, 0x49, 0xaa, 0x90,
+	0x0d, 0x17, 0x1b, 0x44, 0x5e, 0x82, 0x51, 0x81, 0x51, 0x83, 0xdb, 0x48, 0x4e, 0x0f, 0xbb, 0x9d,
+	0x7a, 0x01, 0x60, 0x55, 0x4e, 0x2c, 0x27, 0xee, 0xc9, 0x33, 0x04, 0x41, 0xf5, 0x38, 0xb9, 0x9e,
+	0x78, 0x24, 0xc7, 0x78, 0xe1, 0x91, 0x1c, 0xe3, 0x83, 0x47, 0x72, 0x8c, 0x13, 0x1e, 0xcb, 0x31,
+	0x5c, 0x78, 0x2c, 0xc7, 0x70, 0xe3, 0xb1, 0x1c, 0x43, 0x94, 0x76, 0x7a, 0x66, 0x49, 0x46, 0x69,
+	0x12, 0xc8, 0x20, 0x7d, 0x90, 0x89, 0xba, 0x39, 0x89, 0x49, 0xc5, 0x60, 0x96, 0x7e, 0x05, 0x92,
+	0x1b, 0x4b, 0x2a, 0x0b, 0x52, 0x8b, 0x93, 0xd8, 0xc0, 0x6e, 0x33, 0x06, 0x04, 0x00, 0x00, 0xff,
+	0xff, 0xb3, 0x0f, 0x84, 0xbd, 0x16, 0x01, 0x00, 0x00,
+}
+
+func (m *GenesisState) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *GenesisState) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *GenesisState) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	{
+		size, err := m.Params.MarshalToSizedBuffer(dAtA[:i])
+		if err != nil {
+			return 0, err
+		}
+		i -= size
+		i = encodeVarintGenesis(dAtA, i, uint64(size))
+	}
+	i--
+	dAtA[i] = 0xa
+	return len(dAtA) - i, nil
+}
+
+func encodeVarintGenesis(dAtA []byte, offset int, v uint64) int {
+	offset -= sovGenesis(v)
+	base := offset
+	for v >= 1<<7 {
+		dAtA[offset] = uint8(v&0x7f | 0x80)
+		v >>= 7
+		offset++
+	}
+	dAtA[offset] = uint8(v)
+	return base
+}
+func (m *GenesisState) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = m.Params.Size()
+	n += 1 + l + sovGenesis(uint64(l))
+	return n
+}
+
+func sovGenesis(x uint64) (n int) {
+	return (math_bits.Len64(x|1) + 6) / 7
+}
+func sozGenesis(x uint64) (n int) {
+	return sovGenesis(uint64((x << 1) ^ uint64((int64(x) >> 63))))
+}
+func (m *GenesisState) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowGenesis
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: GenesisState: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: GenesisState: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Params", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenesis
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthGenesis
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthGenesis
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if err := m.Params.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipGenesis(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthGenesis
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func skipGenesis(dAtA []byte) (n int, err error) {
+	l := len(dAtA)
+	iNdEx := 0
+	depth := 0
+	for iNdEx < l {
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return 0, ErrIntOverflowGenesis
+			}
+			if iNdEx >= l {
+				return 0, io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		wireType := int(wire & 0x7)
+		switch wireType {
+		case 0:
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowGenesis
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				iNdEx++
+				if dAtA[iNdEx-1] < 0x80 {
+					break
+				}
+			}
+		case 1:
+			iNdEx += 8
+		case 2:
+			var length int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowGenesis
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				length |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if length < 0 {
+				return 0, ErrInvalidLengthGenesis
+			}
+			iNdEx += length
+		case 3:
+			depth++
+		case 4:
+			if depth == 0 {
+				return 0, ErrUnexpectedEndOfGroupGenesis
+			}
+			depth--
+		case 5:
+			iNdEx += 4
+		default:
+			return 0, fmt.Errorf("proto: illegal wireType %d", wireType)
+		}
+		if iNdEx < 0 {
+			return 0, ErrInvalidLengthGenesis
+		}
+		if depth == 0 {
+			return iNdEx, nil
+		}
+	}
+	return 0, io.ErrUnexpectedEOF
+}
+
+var (
+	ErrInvalidLengthGenesis        = fmt.Errorf("proto: negative length found during unmarshaling")
+	ErrIntOverflowGenesis          = fmt.Errorf("proto: integer overflow")
+	ErrUnexpectedEndOfGroupGenesis = fmt.Errorf("proto: unexpected end of group")
+)
--- a/x/community/types/genesis_test.go
+++ b/x/community/types/genesis_test.go
@ -0,0 +1,61 @@
+package types_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+
+	sdkmath "cosmossdk.io/math"
+
+	"github.com/kava-labs/kava/x/community/types"
+)
+
+func TestDefaultGenesisState(t *testing.T) {
+	defaultGen := types.DefaultGenesisState()
+
+	require.NoError(t, defaultGen.Validate())
+	require.Equal(t, types.DefaultParams(), defaultGen.Params)
+}
+
+func TestGenesisState_Validate(t *testing.T) {
+	testCases := []struct {
+		name        string
+		genesis     types.GenesisState
+		expectedErr string
+	}{
+		{
+			name: "valid state",
+			genesis: types.GenesisState{
+				Params: types.Params{
+					UpgradeTimeDisableInflation: time.Time{},
+					StakingRewardsPerSecond:     sdkmath.NewInt(1000),
+				},
+			},
+			expectedErr: "",
+		},
+		{
+			name: "invalid params",
+			genesis: types.GenesisState{
+				Params: types.Params{
+					UpgradeTimeDisableInflation: time.Time{},
+					StakingRewardsPerSecond:     sdkmath.Int{},
+				},
+			},
+			expectedErr: "StakingRewardsPerSecond should not be nil",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			err := tc.genesis.Validate()
+
+			if tc.expectedErr == "" {
+				require.NoError(t, err)
+			} else {
+				require.Error(t, err)
+				require.Contains(t, err.Error(), tc.expectedErr)
+			}
+		})
+	}
+}
--- a/x/community/types/keys.go
+++ b/x/community/types/keys.go
@ -7,6 +7,9 @@ const (
 	// ModuleAccountName is the name of the module's account
 	ModuleAccountName = ModuleName

+	// StoreKey Top level store key where all module items will be stored
+	StoreKey = ModuleName
+
 	// RouterKey is the top-level router key for the module
 	RouterKey = ModuleName

@ -17,3 +20,8 @@ const (
 	// It is used to determine the address of the old community pool to be returned with the legacy balance.
 	LegacyCommunityPoolModuleName = "distribution"
 )
+
+// key prefixes for store
+var (
+	ParamsKey = []byte{0x01}
+)
--- a/x/community/types/params.go
+++ b/x/community/types/params.go
@ -0,0 +1,49 @@
+package types
+
+import (
+	"errors"
+	fmt "fmt"
+	"time"
+
+	sdkmath "cosmossdk.io/math"
+)
+
+var (
+	DefaultUpgradeTimeDisableInflation = time.Time{}
+	// DefaultStakingRewardsPerSecond is ~4.6 KAVA per block, 6.3s block time
+	DefaultStakingRewardsPerSecond = sdkmath.NewInt(744191)
+)
+
+// NewParams returns a new params object
+func NewParams(
+	upgradeTime time.Time,
+	stakingRewardsPerSecond sdkmath.Int,
+) Params {
+	return Params{
+		UpgradeTimeDisableInflation: upgradeTime,
+		StakingRewardsPerSecond:     stakingRewardsPerSecond,
+	}
+}
+
+// DefaultParams returns default params
+func DefaultParams() Params {
+	return NewParams(
+		DefaultUpgradeTimeDisableInflation,
+		DefaultStakingRewardsPerSecond,
+	)
+}
+
+// Validate checks the params are valid
+func (p Params) Validate() error {
+	// p.UpgradeTimeDisableInflation.IsZero() is a valid state. It's taken to mean inflation will be disabled on the block 1.
+
+	if p.StakingRewardsPerSecond.IsNil() {
+		return errors.New("StakingRewardsPerSecond should not be nil")
+	}
+
+	if p.StakingRewardsPerSecond.IsNegative() {
+		return fmt.Errorf("StakingRewardsPerSecond should not be negative: %s", p.StakingRewardsPerSecond)
+	}
+
+	return nil
+}
--- a/x/community/types/params.pb.go
+++ b/x/community/types/params.pb.go
@ -0,0 +1,385 @@
+// Code generated by protoc-gen-gogo. DO NOT EDIT.
+// source: kava/community/v1beta1/params.proto
+
+package types
+
+import (
+	cosmossdk_io_math "cosmossdk.io/math"
+	fmt "fmt"
+	_ "github.com/cosmos/cosmos-proto"
+	_ "github.com/gogo/protobuf/gogoproto"
+	proto "github.com/gogo/protobuf/proto"
+	github_com_gogo_protobuf_types "github.com/gogo/protobuf/types"
+	_ "google.golang.org/protobuf/types/known/timestamppb"
+	io "io"
+	math "math"
+	math_bits "math/bits"
+	time "time"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+var _ = time.Kitchen
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
+
+// Params defines the parameters of the community module.
+type Params struct {
+	// upgrade_time_disable_inflation is the time at which to disable mint and kavadist module inflation.
+	// If set to 0, inflation will be disabled from block 1.
+	UpgradeTimeDisableInflation time.Time `protobuf:"bytes,1,opt,name=upgrade_time_disable_inflation,json=upgradeTimeDisableInflation,proto3,stdtime" json:"upgrade_time_disable_inflation"`
+	// staking_rewards_per_second is the amount paid out to delegators each block from the community account
+	StakingRewardsPerSecond cosmossdk_io_math.Int `protobuf:"bytes,2,opt,name=staking_rewards_per_second,json=stakingRewardsPerSecond,proto3,customtype=cosmossdk.io/math.Int" json:"staking_rewards_per_second"`
+}
+
+func (m *Params) Reset()         { *m = Params{} }
+func (m *Params) String() string { return proto.CompactTextString(m) }
+func (*Params) ProtoMessage()    {}
+func (*Params) Descriptor() ([]byte, []int) {
+	return fileDescriptor_0a48475520900507, []int{0}
+}
+func (m *Params) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *Params) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_Params.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *Params) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Params.Merge(m, src)
+}
+func (m *Params) XXX_Size() int {
+	return m.Size()
+}
+func (m *Params) XXX_DiscardUnknown() {
+	xxx_messageInfo_Params.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Params proto.InternalMessageInfo
+
+func (m *Params) GetUpgradeTimeDisableInflation() time.Time {
+	if m != nil {
+		return m.UpgradeTimeDisableInflation
+	}
+	return time.Time{}
+}
+
+func init() {
+	proto.RegisterType((*Params)(nil), "kava.community.v1beta1.Params")
+}
+
+func init() {
+	proto.RegisterFile("kava/community/v1beta1/params.proto", fileDescriptor_0a48475520900507)
+}
+
+var fileDescriptor_0a48475520900507 = []byte{
+	// 336 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x4c, 0x91, 0xcf, 0x4e, 0x2a, 0x31,
+	0x14, 0x87, 0xa7, 0x77, 0x41, 0xae, 0xe3, 0x8e, 0xf8, 0x07, 0xc7, 0x64, 0x86, 0xe8, 0x86, 0x84,
+	0xd0, 0x06, 0x7d, 0x03, 0xa2, 0x0b, 0x76, 0x04, 0x5d, 0xb9, 0x69, 0x3a, 0x4c, 0x29, 0x0d, 0xd3,
+	0x76, 0xd2, 0x76, 0x50, 0xde, 0x82, 0x87, 0xf1, 0x21, 0x58, 0x12, 0x57, 0xc6, 0x44, 0x34, 0xf0,
+	0x22, 0xa6, 0xd3, 0xc1, 0xb8, 0x3b, 0xe7, 0xf4, 0xeb, 0xd7, 0xfc, 0x4e, 0xc3, 0xeb, 0x39, 0x59,
+	0x10, 0x34, 0x51, 0x42, 0x94, 0x92, 0xdb, 0x25, 0x5a, 0xf4, 0x53, 0x6a, 0x49, 0x1f, 0x15, 0x44,
+	0x13, 0x61, 0x60, 0xa1, 0x95, 0x55, 0xcd, 0x33, 0x07, 0xc1, 0x5f, 0x08, 0xd6, 0x50, 0x74, 0x31,
+	0x51, 0x46, 0x28, 0x83, 0x2b, 0x0a, 0xf9, 0xc6, 0x5f, 0x89, 0x4e, 0x98, 0x62, 0xca, 0xcf, 0x5d,
+	0x55, 0x4f, 0x13, 0xa6, 0x14, 0xcb, 0x29, 0xaa, 0xba, 0xb4, 0x9c, 0x22, 0xcb, 0x05, 0x35, 0x96,
+	0x88, 0xc2, 0x03, 0x57, 0x9f, 0x20, 0x6c, 0x8c, 0xaa, 0xa7, 0x9b, 0x3c, 0x8c, 0xcb, 0x82, 0x69,
+	0x92, 0x51, 0xec, 0x28, 0x9c, 0x71, 0x43, 0xd2, 0x9c, 0x62, 0x2e, 0xa7, 0x39, 0xb1, 0x5c, 0xc9,
+	0x16, 0x68, 0x83, 0xce, 0xf1, 0x4d, 0x04, 0xbd, 0x14, 0x1e, 0xa4, 0xf0, 0xf1, 0x20, 0x1d, 0xfc,
+	0x5f, 0x6f, 0x93, 0x60, 0xf5, 0x95, 0x80, 0xf1, 0x65, 0xed, 0x72, 0x67, 0x77, 0xde, 0x34, 0x3c,
+	0x88, 0x9a, 0xb3, 0x30, 0x32, 0x96, 0xcc, 0xb9, 0x64, 0x58, 0xd3, 0x67, 0xa2, 0x33, 0x83, 0x0b,
+	0xaa, 0xb1, 0xa1, 0x13, 0x25, 0xb3, 0xd6, 0xbf, 0x36, 0xe8, 0x1c, 0x0d, 0xba, 0x4e, 0xf5, 0xb1,
+	0x4d, 0x4e, 0x7d, 0x4c, 0x93, 0xcd, 0x21, 0x57, 0x48, 0x10, 0x3b, 0x83, 0x43, 0x69, 0xdf, 0x5e,
+	0x7b, 0x61, 0x9d, 0x7f, 0x28, 0xed, 0xf8, 0xbc, 0xd6, 0x8d, 0xbd, 0x6d, 0x44, 0xf5, 0x43, 0xe5,
+	0x1a, 0xdc, 0xaf, 0x77, 0x31, 0xd8, 0xec, 0x62, 0xf0, 0xbd, 0x8b, 0xc1, 0x6a, 0x1f, 0x07, 0x9b,
+	0x7d, 0x1c, 0xbc, 0xef, 0xe3, 0xe0, 0xa9, 0xcb, 0xb8, 0x9d, 0x95, 0xa9, 0xdb, 0x32, 0x72, 0xeb,
+	0xee, 0xe5, 0x24, 0x35, 0x55, 0x85, 0x5e, 0xfe, 0xfc, 0x8f, 0x5d, 0x16, 0xd4, 0xa4, 0x8d, 0x2a,
+	0xeb, 0xed, 0x4f, 0x00, 0x00, 0x00, 0xff, 0xff, 0xc5, 0xad, 0xf1, 0xc6, 0xbe, 0x01, 0x00, 0x00,
+}
+
+func (m *Params) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *Params) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *Params) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	{
+		size := m.StakingRewardsPerSecond.Size()
+		i -= size
+		if _, err := m.StakingRewardsPerSecond.MarshalTo(dAtA[i:]); err != nil {
+			return 0, err
+		}
+		i = encodeVarintParams(dAtA, i, uint64(size))
+	}
+	i--
+	dAtA[i] = 0x12
+	n1, err1 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.UpgradeTimeDisableInflation, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.UpgradeTimeDisableInflation):])
+	if err1 != nil {
+		return 0, err1
+	}
+	i -= n1
+	i = encodeVarintParams(dAtA, i, uint64(n1))
+	i--
+	dAtA[i] = 0xa
+	return len(dAtA) - i, nil
+}
+
+func encodeVarintParams(dAtA []byte, offset int, v uint64) int {
+	offset -= sovParams(v)
+	base := offset
+	for v >= 1<<7 {
+		dAtA[offset] = uint8(v&0x7f | 0x80)
+		v >>= 7
+		offset++
+	}
+	dAtA[offset] = uint8(v)
+	return base
+}
+func (m *Params) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.UpgradeTimeDisableInflation)
+	n += 1 + l + sovParams(uint64(l))
+	l = m.StakingRewardsPerSecond.Size()
+	n += 1 + l + sovParams(uint64(l))
+	return n
+}
+
+func sovParams(x uint64) (n int) {
+	return (math_bits.Len64(x|1) + 6) / 7
+}
+func sozParams(x uint64) (n int) {
+	return sovParams(uint64((x << 1) ^ uint64((int64(x) >> 63))))
+}
+func (m *Params) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowParams
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: Params: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: Params: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field UpgradeTimeDisableInflation", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowParams
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthParams
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthParams
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.UpgradeTimeDisableInflation, dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field StakingRewardsPerSecond", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowParams
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthParams
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthParams
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if err := m.StakingRewardsPerSecond.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipParams(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthParams
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func skipParams(dAtA []byte) (n int, err error) {
+	l := len(dAtA)
+	iNdEx := 0
+	depth := 0
+	for iNdEx < l {
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return 0, ErrIntOverflowParams
+			}
+			if iNdEx >= l {
+				return 0, io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		wireType := int(wire & 0x7)
+		switch wireType {
+		case 0:
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowParams
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				iNdEx++
+				if dAtA[iNdEx-1] < 0x80 {
+					break
+				}
+			}
+		case 1:
+			iNdEx += 8
+		case 2:
+			var length int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowParams
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				length |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if length < 0 {
+				return 0, ErrInvalidLengthParams
+			}
+			iNdEx += length
+		case 3:
+			depth++
+		case 4:
+			if depth == 0 {
+				return 0, ErrUnexpectedEndOfGroupParams
+			}
+			depth--
+		case 5:
+			iNdEx += 4
+		default:
+			return 0, fmt.Errorf("proto: illegal wireType %d", wireType)
+		}
+		if iNdEx < 0 {
+			return 0, ErrInvalidLengthParams
+		}
+		if depth == 0 {
+			return iNdEx, nil
+		}
+	}
+	return 0, io.ErrUnexpectedEOF
+}
+
+var (
+	ErrInvalidLengthParams        = fmt.Errorf("proto: negative length found during unmarshaling")
+	ErrIntOverflowParams          = fmt.Errorf("proto: integer overflow")
+	ErrUnexpectedEndOfGroupParams = fmt.Errorf("proto: unexpected end of group")
+)
--- a/x/community/types/params_test.go
+++ b/x/community/types/params_test.go
@ -0,0 +1,57 @@
+package types_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+
+	sdkmath "cosmossdk.io/math"
+	"github.com/kava-labs/kava/x/community/types"
+)
+
+func TestParamsValidate(t *testing.T) {
+	testCases := []struct {
+		name        string
+		params      types.Params
+		expectedErr string
+	}{
+		{
+			name: "valid parms",
+			params: types.Params{
+				UpgradeTimeDisableInflation: time.Time{},
+				StakingRewardsPerSecond:     sdkmath.NewInt(1000),
+			},
+			expectedErr: "",
+		},
+		{
+			name: "nil rewards per second",
+			params: types.Params{
+				UpgradeTimeDisableInflation: time.Time{},
+				StakingRewardsPerSecond:     sdkmath.Int{},
+			},
+			expectedErr: "StakingRewardsPerSecond should not be nil",
+		},
+		{
+			name: "negative rewards per second",
+			params: types.Params{
+				UpgradeTimeDisableInflation: time.Time{},
+				StakingRewardsPerSecond:     sdkmath.NewInt(-5),
+			},
+			expectedErr: "StakingRewardsPerSecond should not be negative",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			err := tc.params.Validate()
+
+			if tc.expectedErr == "" {
+				require.NoError(t, err)
+			} else {
+				require.Error(t, err)
+				require.Contains(t, err.Error(), tc.expectedErr)
+			}
+		})
+	}
+}
--- a/x/community/types/query.pb.go
+++ b/x/community/types/query.pb.go
@ -31,6 +31,89 @@ var _ = math.Inf
 // proto package needs to be updated.
 const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package

+// QueryParams defines the request type for querying x/community params.
+type QueryParamsRequest struct {
+}
+
+func (m *QueryParamsRequest) Reset()         { *m = QueryParamsRequest{} }
+func (m *QueryParamsRequest) String() string { return proto.CompactTextString(m) }
+func (*QueryParamsRequest) ProtoMessage()    {}
+func (*QueryParamsRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f236f06c43149273, []int{0}
+}
+func (m *QueryParamsRequest) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *QueryParamsRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_QueryParamsRequest.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *QueryParamsRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_QueryParamsRequest.Merge(m, src)
+}
+func (m *QueryParamsRequest) XXX_Size() int {
+	return m.Size()
+}
+func (m *QueryParamsRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_QueryParamsRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_QueryParamsRequest proto.InternalMessageInfo
+
+// QueryParamsResponse defines the response type for querying x/community params.
+type QueryParamsResponse struct {
+	// params represents the community module parameters
+	Params Params `protobuf:"bytes,1,opt,name=params,proto3" json:"params"`
+}
+
+func (m *QueryParamsResponse) Reset()         { *m = QueryParamsResponse{} }
+func (m *QueryParamsResponse) String() string { return proto.CompactTextString(m) }
+func (*QueryParamsResponse) ProtoMessage()    {}
+func (*QueryParamsResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f236f06c43149273, []int{1}
+}
+func (m *QueryParamsResponse) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *QueryParamsResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_QueryParamsResponse.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *QueryParamsResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_QueryParamsResponse.Merge(m, src)
+}
+func (m *QueryParamsResponse) XXX_Size() int {
+	return m.Size()
+}
+func (m *QueryParamsResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_QueryParamsResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_QueryParamsResponse proto.InternalMessageInfo
+
+func (m *QueryParamsResponse) GetParams() Params {
+	if m != nil {
+		return m.Params
+	}
+	return Params{}
+}
+
 // QueryBalanceRequest defines the request type for querying x/community balance.
 type QueryBalanceRequest struct {
 }
@ -39,7 +122,7 @@ func (m *QueryBalanceRequest) Reset()         { *m = QueryBalanceRequest{} }
 func (m *QueryBalanceRequest) String() string { return proto.CompactTextString(m) }
 func (*QueryBalanceRequest) ProtoMessage()    {}
 func (*QueryBalanceRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_f236f06c43149273, []int{0}
+	return fileDescriptor_f236f06c43149273, []int{2}
 }
 func (m *QueryBalanceRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@ -77,7 +160,7 @@ func (m *QueryBalanceResponse) Reset()         { *m = QueryBalanceResponse{} }
 func (m *QueryBalanceResponse) String() string { return proto.CompactTextString(m) }
 func (*QueryBalanceResponse) ProtoMessage()    {}
 func (*QueryBalanceResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_f236f06c43149273, []int{1}
+	return fileDescriptor_f236f06c43149273, []int{3}
 }
 func (m *QueryBalanceResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@ -121,7 +204,7 @@ func (m *QueryTotalBalanceRequest) Reset()         { *m = QueryTotalBalanceReque
 func (m *QueryTotalBalanceRequest) String() string { return proto.CompactTextString(m) }
 func (*QueryTotalBalanceRequest) ProtoMessage()    {}
 func (*QueryTotalBalanceRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_f236f06c43149273, []int{2}
+	return fileDescriptor_f236f06c43149273, []int{4}
 }
 func (m *QueryTotalBalanceRequest) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@ -161,7 +244,7 @@ func (m *QueryTotalBalanceResponse) Reset()         { *m = QueryTotalBalanceResp
 func (m *QueryTotalBalanceResponse) String() string { return proto.CompactTextString(m) }
 func (*QueryTotalBalanceResponse) ProtoMessage()    {}
 func (*QueryTotalBalanceResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_f236f06c43149273, []int{3}
+	return fileDescriptor_f236f06c43149273, []int{5}
 }
 func (m *QueryTotalBalanceResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@ -198,6 +281,8 @@ func (m *QueryTotalBalanceResponse) GetPool() github_com_cosmos_cosmos_sdk_types
 }

 func init() {
+	proto.RegisterType((*QueryParamsRequest)(nil), "kava.community.v1beta1.QueryParamsRequest")
+	proto.RegisterType((*QueryParamsResponse)(nil), "kava.community.v1beta1.QueryParamsResponse")
 	proto.RegisterType((*QueryBalanceRequest)(nil), "kava.community.v1beta1.QueryBalanceRequest")
 	proto.RegisterType((*QueryBalanceResponse)(nil), "kava.community.v1beta1.QueryBalanceResponse")
 	proto.RegisterType((*QueryTotalBalanceRequest)(nil), "kava.community.v1beta1.QueryTotalBalanceRequest")
@ -209,33 +294,37 @@ func init() {
 }

 var fileDescriptor_f236f06c43149273 = []byte{
-	// 411 bytes of a gzipped FileDescriptorProto
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-	0x00, 0xff, 0xff, 0x67, 0x9d, 0xae, 0xd2, 0x51, 0x03, 0x00, 0x00,
+	// 478 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x93, 0x31, 0x6f, 0x13, 0x31,
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+	0xdf, 0x01, 0x00, 0x00, 0xff, 0xff, 0x62, 0x63, 0xf8, 0x10, 0x6d, 0x04, 0x00, 0x00,
 }

 // Reference imports to suppress errors if they are not otherwise used.
@ -250,6 +339,8 @@ const _ = grpc.SupportPackageIsVersion4
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
 type QueryClient interface {
+	// Params queires the module params.
+	Params(ctx context.Context, in *QueryParamsRequest, opts ...grpc.CallOption) (*QueryParamsResponse, error)
 	// Balance queries the balance of all coins of x/community module.
 	Balance(ctx context.Context, in *QueryBalanceRequest, opts ...grpc.CallOption) (*QueryBalanceResponse, error)
 	// TotalBalance queries the balance of all coins, including x/distribution,
@ -265,6 +356,15 @@ func NewQueryClient(cc grpc1.ClientConn) QueryClient {
 	return &queryClient{cc}
 }

+func (c *queryClient) Params(ctx context.Context, in *QueryParamsRequest, opts ...grpc.CallOption) (*QueryParamsResponse, error) {
+	out := new(QueryParamsResponse)
+	err := c.cc.Invoke(ctx, "/kava.community.v1beta1.Query/Params", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *queryClient) Balance(ctx context.Context, in *QueryBalanceRequest, opts ...grpc.CallOption) (*QueryBalanceResponse, error) {
 	out := new(QueryBalanceResponse)
 	err := c.cc.Invoke(ctx, "/kava.community.v1beta1.Query/Balance", in, out, opts...)
@ -285,6 +385,8 @@ func (c *queryClient) TotalBalance(ctx context.Context, in *QueryTotalBalanceReq

 // QueryServer is the server API for Query service.
 type QueryServer interface {
+	// Params queires the module params.
+	Params(context.Context, *QueryParamsRequest) (*QueryParamsResponse, error)
 	// Balance queries the balance of all coins of x/community module.
 	Balance(context.Context, *QueryBalanceRequest) (*QueryBalanceResponse, error)
 	// TotalBalance queries the balance of all coins, including x/distribution,
@ -296,6 +398,9 @@ type QueryServer interface {
 type UnimplementedQueryServer struct {
 }

+func (*UnimplementedQueryServer) Params(ctx context.Context, req *QueryParamsRequest) (*QueryParamsResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Params not implemented")
+}
 func (*UnimplementedQueryServer) Balance(ctx context.Context, req *QueryBalanceRequest) (*QueryBalanceResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Balance not implemented")
 }
@ -307,6 +412,24 @@ func RegisterQueryServer(s grpc1.Server, srv QueryServer) {
 	s.RegisterService(&_Query_serviceDesc, srv)
 }

+func _Query_Params_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(QueryParamsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(QueryServer).Params(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/kava.community.v1beta1.Query/Params",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(QueryServer).Params(ctx, req.(*QueryParamsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _Query_Balance_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(QueryBalanceRequest)
 	if err := dec(in); err != nil {
@ -347,6 +470,10 @@ var _Query_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "kava.community.v1beta1.Query",
 	HandlerType: (*QueryServer)(nil),
 	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Params",
+			Handler:    _Query_Params_Handler,
+		},
 		{
 			MethodName: "Balance",
 			Handler:    _Query_Balance_Handler,
@ -360,6 +487,62 @@ var _Query_serviceDesc = grpc.ServiceDesc{
 	Metadata: "kava/community/v1beta1/query.proto",
 }

+func (m *QueryParamsRequest) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *QueryParamsRequest) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *QueryParamsRequest) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	return len(dAtA) - i, nil
+}
+
+func (m *QueryParamsResponse) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *QueryParamsResponse) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *QueryParamsResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	{
+		size, err := m.Params.MarshalToSizedBuffer(dAtA[:i])
+		if err != nil {
+			return 0, err
+		}
+		i -= size
+		i = encodeVarintQuery(dAtA, i, uint64(size))
+	}
+	i--
+	dAtA[i] = 0xa
+	return len(dAtA) - i, nil
+}
+
 func (m *QueryBalanceRequest) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
@ -491,6 +674,26 @@ func encodeVarintQuery(dAtA []byte, offset int, v uint64) int {
 	dAtA[offset] = uint8(v)
 	return base
 }
+func (m *QueryParamsRequest) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	return n
+}
+
+func (m *QueryParamsResponse) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = m.Params.Size()
+	n += 1 + l + sovQuery(uint64(l))
+	return n
+}
+
 func (m *QueryBalanceRequest) Size() (n int) {
 	if m == nil {
 		return 0
@ -545,6 +748,139 @@ func sovQuery(x uint64) (n int) {
 func sozQuery(x uint64) (n int) {
 	return sovQuery(uint64((x << 1) ^ uint64((int64(x) >> 63))))
 }
+func (m *QueryParamsRequest) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowQuery
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: QueryParamsRequest: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: QueryParamsRequest: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		default:
+			iNdEx = preIndex
+			skippy, err := skipQuery(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthQuery
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *QueryParamsResponse) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowQuery
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: QueryParamsResponse: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: QueryParamsResponse: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Params", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowQuery
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthQuery
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthQuery
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if err := m.Params.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipQuery(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthQuery
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func (m *QueryBalanceRequest) Unmarshal(dAtA []byte) error {
 	l := len(dAtA)
 	iNdEx := 0
--- a/x/community/types/query.pb.gw.go
+++ b/x/community/types/query.pb.gw.go
@ -33,6 +33,24 @@ var _ = utilities.NewDoubleArray
 var _ = descriptor.ForMessage
 var _ = metadata.Join

+func request_Query_Params_0(ctx context.Context, marshaler runtime.Marshaler, client QueryClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq QueryParamsRequest
+	var metadata runtime.ServerMetadata
+
+	msg, err := client.Params(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func local_request_Query_Params_0(ctx context.Context, marshaler runtime.Marshaler, server QueryServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq QueryParamsRequest
+	var metadata runtime.ServerMetadata
+
+	msg, err := server.Params(ctx, &protoReq)
+	return msg, metadata, err
+
+}
+
 func request_Query_Balance_0(ctx context.Context, marshaler runtime.Marshaler, client QueryClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
 	var protoReq QueryBalanceRequest
 	var metadata runtime.ServerMetadata
@ -75,6 +93,29 @@ func local_request_Query_TotalBalance_0(ctx context.Context, marshaler runtime.M
 // Note that using this registration option will cause many gRPC library features to stop working. Consider using RegisterQueryHandlerFromEndpoint instead.
 func RegisterQueryHandlerServer(ctx context.Context, mux *runtime.ServeMux, server QueryServer) error {

+	mux.Handle("GET", pattern_Query_Params_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		var stream runtime.ServerTransportStream
+		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_Query_Params_0(rctx, inboundMarshaler, server, req, pathParams)
+		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_Query_Params_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	mux.Handle("GET", pattern_Query_Balance_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
 		ctx, cancel := context.WithCancel(req.Context())
 		defer cancel()
@ -162,6 +203,26 @@ func RegisterQueryHandler(ctx context.Context, mux *runtime.ServeMux, conn *grpc
 // "QueryClient" to call the correct interceptors.
 func RegisterQueryHandlerClient(ctx context.Context, mux *runtime.ServeMux, client QueryClient) error {

+	mux.Handle("GET", pattern_Query_Params_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateContext(ctx, mux, req)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_Query_Params_0(rctx, inboundMarshaler, client, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_Query_Params_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	mux.Handle("GET", pattern_Query_Balance_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
 		ctx, cancel := context.WithCancel(req.Context())
 		defer cancel()
@ -206,12 +267,16 @@ func RegisterQueryHandlerClient(ctx context.Context, mux *runtime.ServeMux, clie
 }

 var (
+	pattern_Query_Params_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"kava", "community", "v1beta1", "params"}, "", runtime.AssumeColonVerbOpt(false)))
+
 	pattern_Query_Balance_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"kava", "community", "v1beta1", "balance"}, "", runtime.AssumeColonVerbOpt(false)))

 	pattern_Query_TotalBalance_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"kava", "community", "v1beta1", "total_balance"}, "", runtime.AssumeColonVerbOpt(false)))
 )

 var (
+	forward_Query_Params_0 = runtime.ForwardResponseMessage
+
 	forward_Query_Balance_0 = runtime.ForwardResponseMessage

 	forward_Query_TotalBalance_0 = runtime.ForwardResponseMessage