feat!: add initial deposit ratio requirement of 0.5 for proposal submission

README.md

@@ -52,7 +52,7 @@ breaking changes.
 This forked Cosmos SDK has the following changes and it contains state breaking changes.
 
 - [`x/staking`](https://github.com/cosmosquad-labs/cosmos-sdk/pull/10) fix: allow delegate only spendable coins
-- [`x/gov`](https://github.com/cosmosquad-labs/cosmos-sdk/pull/8) feat: add additional voting powers hook on tally
+- [`x/gov`](https://github.com/cosmosquad-labs/cosmos-sdk/pull/8) feat: add additional voting powers hook on tally, add initial deposit ratio requirement of 0.5 for proposal submission
 - [`x/vesting`](https://github.com/cosmosquad-labs/cosmos-sdk/pull/11) feat: periodic vesting msg
 
 ## Quick Start

x/auth/legacy/v043/store_test.go

@@ -332,6 +332,8 @@ func TestMigrateVestingAccounts(t *testing.T) {
 
 				delayedAccount := types.NewPeriodicVestingAccount(baseAccount, vestedCoins, startTime, periods)
 
+				ctx = ctx.WithBlockTime(time.Unix(1601042400, 0))
+
 				app.AccountKeeper.SetAccount(ctx, delayedAccount)
 
 				// delegation of the original vesting, failed because of no spendable balances

x/gov/abci_test.go

@@ -32,7 +32,7 @@ func TestTickExpiredDepositPeriod(t *testing.T) {
 
 	newProposalMsg, err := types.NewMsgSubmitProposal(
 		types.ContentFromProposalType("test", "test", types.ProposalTypeText),
-		sdk.Coins{sdk.NewInt64Coin(sdk.DefaultBondDenom, 5)},
+		sdk.Coins{sdk.NewInt64Coin(sdk.DefaultBondDenom, 5000000)},
 		addrs[0],
 	)
 	require.NoError(t, err)
@@ -84,7 +84,7 @@ func TestTickMultipleExpiredDepositPeriod(t *testing.T) {
 
 	newProposalMsg, err := types.NewMsgSubmitProposal(
 		types.ContentFromProposalType("test", "test", types.ProposalTypeText),
-		sdk.Coins{sdk.NewInt64Coin(sdk.DefaultBondDenom, 5)},
+		sdk.Coins{sdk.NewInt64Coin(sdk.DefaultBondDenom, 5000000)},
 		addrs[0],
 	)
 	require.NoError(t, err)
@@ -107,7 +107,7 @@ func TestTickMultipleExpiredDepositPeriod(t *testing.T) {
 
 	newProposalMsg2, err := types.NewMsgSubmitProposal(
 		types.ContentFromProposalType("test2", "test2", types.ProposalTypeText),
-		sdk.Coins{sdk.NewInt64Coin(sdk.DefaultBondDenom, 5)},
+		sdk.Coins{sdk.NewInt64Coin(sdk.DefaultBondDenom, 5000000)},
 		addrs[0],
 	)
 	require.NoError(t, err)
@@ -164,7 +164,7 @@ func TestTickPassedDepositPeriod(t *testing.T) {
 
 	newProposalMsg, err := types.NewMsgSubmitProposal(
 		types.ContentFromProposalType("test2", "test2", types.ProposalTypeText),
-		sdk.Coins{sdk.NewInt64Coin(sdk.DefaultBondDenom, 5)},
+		sdk.Coins{sdk.NewInt64Coin(sdk.DefaultBondDenom, 5000000)},
 		addrs[0],
 	)
 	require.NoError(t, err)

x/gov/keeper/msg_server.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/cosmos/cosmos-sdk/telemetry"
 	sdk "github.com/cosmos/cosmos-sdk/types"
+	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 	"github.com/cosmos/cosmos-sdk/x/gov/types"
 )
 
@@ -26,14 +27,25 @@ var _ types.MsgServer = msgServer{}
 
 func (k msgServer) SubmitProposal(goCtx context.Context, msg *types.MsgSubmitProposal) (*types.MsgSubmitProposalResponse, error) {
 	ctx := sdk.UnwrapSDKContext(goCtx)
+
+	// checking minimum initial deposit requirement for submitting proposals, ref. https://github.com/cosmos/cosmos-sdk/pull/12771
+	initialDeposit := msg.GetInitialDeposit()
+	initialDepositRequired := k.GetDepositParams(ctx).MinDeposit
+	for i := range initialDepositRequired {
+		initialDepositRequired[i].Amount = initialDepositRequired[i].Amount.ToDec().Mul(types.MinInitialDepositRatio).RoundInt()
+	}
+	if !initialDeposit.IsAllGTE(initialDepositRequired) {
+		return nil, sdkerrors.Wrapf(types.ErrMinDepositTooSmall, "was (%s), need (%s)", initialDeposit, initialDepositRequired)
+	}
+
 	proposal, err := k.Keeper.SubmitProposal(ctx, msg.GetContent())
 	if err != nil {
 		return nil, err
 	}
 
 	defer telemetry.IncrCounter(1, types.ModuleName, "proposal")
 
-	votingStarted, err := k.Keeper.AddDeposit(ctx, proposal.ProposalId, msg.GetProposer(), msg.GetInitialDeposit())
+	votingStarted, err := k.Keeper.AddDeposit(ctx, proposal.ProposalId, msg.GetProposer(), initialDeposit)
 	if err != nil {
 		return nil, err
 	}

x/gov/keeper/msg_server_test.go

@@ -0,0 +1,89 @@
+package keeper_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
+
+	"github.com/cosmos/cosmos-sdk/simapp"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/x/gov/keeper"
+	"github.com/cosmos/cosmos-sdk/x/gov/types"
+)
+
+func TestSubmitProposal_InitialDeposit(t *testing.T) {
+	var baseDepositTestAmount = int64(100)
+	var meetsDepositValue = types.MinInitialDepositRatio.MulInt64(baseDepositTestAmount).RoundInt64()
+
+	testcases := map[string]struct {
+		minDeposit             sdk.Coins
+		minInitialDepositRatio sdk.Dec
+		initialDeposit         sdk.Coins
+		accountBalance         sdk.Coins
+
+		expectError bool
+	}{
+		"meets initial deposit, enough balance - success": {
+			minDeposit:             sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, sdk.NewInt(baseDepositTestAmount))),
+			minInitialDepositRatio: types.MinInitialDepositRatio,
+			initialDeposit:         sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, sdk.NewInt(meetsDepositValue))),
+			accountBalance:         sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, sdk.NewInt(meetsDepositValue))),
+		},
+		"does not meet initial deposit, enough balance - error": {
+			minDeposit:             sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, sdk.NewInt(baseDepositTestAmount))),
+			minInitialDepositRatio: types.MinInitialDepositRatio,
+			initialDeposit:         sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, sdk.NewInt(meetsDepositValue-1))),
+			accountBalance:         sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, sdk.NewInt(meetsDepositValue))),
+
+			expectError: true,
+		},
+		"meets initial deposit, not enough balance - error": {
+			minDeposit:             sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, sdk.NewInt(baseDepositTestAmount))),
+			minInitialDepositRatio: types.MinInitialDepositRatio,
+			initialDeposit:         sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, sdk.NewInt(meetsDepositValue))),
+			accountBalance:         sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, sdk.NewInt(meetsDepositValue-1))),
+
+			expectError: true,
+		},
+		"does not meet initial deposit and not enough balance - error": {
+			minDeposit:             sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, sdk.NewInt(baseDepositTestAmount))),
+			minInitialDepositRatio: types.MinInitialDepositRatio,
+			initialDeposit:         sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, sdk.NewInt(meetsDepositValue-1))),
+			accountBalance:         sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, sdk.NewInt(meetsDepositValue-1))),
+
+			expectError: true,
+		},
+	}
+
+	for name, tc := range testcases {
+		t.Run(name, func(t *testing.T) {
+
+			// Setup
+			app := simapp.Setup(false)
+			ctx := app.BaseApp.NewContext(false, tmproto.Header{})
+			govKeeper := app.GovKeeper
+			msgServer := keeper.NewMsgServerImpl(govKeeper)
+
+			params := types.DefaultDepositParams()
+			params.MinDeposit = tc.minDeposit
+			govKeeper.SetDepositParams(ctx, params)
+
+			address := simapp.AddTestAddrs(app, ctx, 1, sdk.NewInt(0))[0]
+			simapp.FundAccount(app.BankKeeper, ctx, address, tc.accountBalance)
+
+			msg, err := types.NewMsgSubmitProposal(TestProposal, tc.initialDeposit, address)
+			require.NoError(t, err)
+
+			// System under test
+			_, err = msgServer.SubmitProposal(sdk.WrapSDKContext(ctx), msg)
+
+			// Assertions
+			if tc.expectError {
+				require.Error(t, err)
+				return
+			}
+			require.NoError(t, err)
+		})
+	}
+}

x/gov/simulation/operations.go

@@ -128,7 +128,7 @@ func SimulateMsgSubmitProposal(
 		}
 
 		simAccount, _ := simtypes.RandomAcc(r, accs)
-		deposit, skip, err := randomDeposit(r, ctx, ak, bk, k, simAccount.Address)
+		deposit, skip, err := randomDeposit(r, ctx, ak, bk, k, simAccount.Address, true)
 		switch {
 		case skip:
 			return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgSubmitProposal, "skip deposit"), nil, nil
@@ -219,7 +219,7 @@ func SimulateMsgDeposit(ak types.AccountKeeper, bk types.BankKeeper, k keeper.Ke
 			return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgDeposit, "unable to generate proposalID"), nil, nil
 		}
 
-		deposit, skip, err := randomDeposit(r, ctx, ak, bk, k, simAccount.Address)
+		deposit, skip, err := randomDeposit(r, ctx, ak, bk, k, simAccount.Address, false)
 		switch {
 		case skip:
 			return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgDeposit, "skip deposit"), nil, nil
@@ -371,7 +371,7 @@ func operationSimulateMsgVoteWeighted(ak types.AccountKeeper, bk types.BankKeepe
 // This is to simulate multiple users depositing to get the
 // proposal above the minimum deposit amount
 func randomDeposit(r *rand.Rand, ctx sdk.Context,
-	ak types.AccountKeeper, bk types.BankKeeper, k keeper.Keeper, addr sdk.AccAddress,
+	ak types.AccountKeeper, bk types.BankKeeper, k keeper.Keeper, addr sdk.AccAddress, useMinAmount bool,
 ) (deposit sdk.Coins, skip bool, err error) {
 	account := ak.GetAccount(ctx, addr)
 	spendable := bk.SpendableCoins(ctx, account.GetAddress())
@@ -380,25 +380,36 @@ func randomDeposit(r *rand.Rand, ctx sdk.Context,
 		return nil, true, nil // skip
 	}
 
-	minDeposit := k.GetDepositParams(ctx).MinDeposit
+	depositParams := k.GetDepositParams(ctx)
+
+	minDeposit := depositParams.MinDeposit
+
 	denomIndex := r.Intn(len(minDeposit))
 	denom := minDeposit[denomIndex].Denom
 
-	depositCoins := spendable.AmountOf(denom)
-	if depositCoins.IsZero() {
+	spendableBalance := spendable.AmountOf(denom)
+	if spendableBalance.IsZero() {
 		return nil, true, nil
 	}
 
-	maxAmt := depositCoins
-	if maxAmt.GT(minDeposit[denomIndex].Amount) {
-		maxAmt = minDeposit[denomIndex].Amount
+	minDepositAmount := minDeposit[denomIndex].Amount
+
+	minAmount := sdk.ZeroInt()
+	if useMinAmount {
+		minAmount = minDepositAmount.ToDec().Mul(types.MinInitialDepositRatio).RoundInt()
 	}
 
-	amount, err := simtypes.RandPositiveInt(r, maxAmt)
+	amount, err := simtypes.RandPositiveInt(r, minDepositAmount.Sub(minAmount))
 	if err != nil {
 		return nil, false, err
 	}
 
+	amount = amount.Add(minAmount)
+
+	if amount.GT(spendableBalance) {
+		return nil, true, nil
+	}
+
 	return sdk.Coins{sdk.NewCoin(denom, amount)}, false, nil
 }
 

x/gov/simulation/operations_test.go

@@ -115,7 +115,7 @@ func TestSimulateMsgSubmitProposal(t *testing.T) {
 
 	require.True(t, operationMsg.OK)
 	require.Equal(t, "cosmos1p8wcgrjr4pjju90xg6u9cgq55dxwq8j7u4x9a0", msg.Proposer)
-	require.Equal(t, "2686011stake", msg.InitialDeposit.String())
+	require.Equal(t, "7755634stake", msg.InitialDeposit.String())
 	require.Equal(t, "title-3: ZBSpYuLyYggwexjxusrBqDOTtGTOWeLrQKjLxzIivHSlcxgdXhhuTSkuxKGLwQvuyNhYFmBZHeAerqyNEUzXPFGkqEGqiQWIXnku", msg.GetContent().GetTitle())
 	require.Equal(t, "description-3: NJWzHdBNpAXKJPHWQdrGYcAHSctgVlqwqHoLfHsXUdStwfefwzqLuKEhmMyYLdbZrcPgYqjNHxPexsruwEGStAneKbWkQDDIlCWBLSiAASNhZqNFlPtfqPJoxKsgMdzjWqLWdqKQuJqWPMvwPQWZUtVMOTMYKJbfdlZsjdsomuScvDmbDkgRualsxDvRJuCAmPOXitIbcyWsKGSdrEunFAOdmXnsuyFVgJqEjbklvmwrUlsxjRSfKZxGcpayDdgoFcnVSutxjRgOSFzPwidAjubMncNweqpbxhXGchpZUxuFDOtpnhNUycJICRYqsPhPSCjPTWZFLkstHWJxvdPEAyEIxXgLwbNOjrgzmaujiBABBIXvcXpLrbcEWNNQsbjvgJFgJkflpRohHUutvnaUqoopuKjTDaemDeSdqbnOzcfJpcTuAQtZoiLZOoAIlboFDAeGmSNwkvObPRvRWQgWkGkxwtPauYgdkmypLjbqhlHJIQTntgWjXwZdOyYEdQRRLfMSdnxqppqUofqLbLQDUjwKVKfZJUJQPsWIPwIVaSTrmKskoAhvmZyJgeRpkaTfGgrJzAigcxtfshmiDCFkuiluqtMOkidknnTBtumyJYlIsWLnCQclqdVmikUoMOPdPWwYbJxXyqUVicNxFxyqJTenNblyyKSdlCbiXxUiYUiMwXZASYfvMDPFgxniSjWaZTjHkqlJvtBsXqwPpyVxnJVGFWhfSxgOcduoxkiopJvFjMmFabrGYeVtTXLhxVUEiGwYUvndjFGzDVntUvibiyZhfMQdMhgsiuysLMiePBNXifRLMsSmXPkwlPloUbJveCvUlaalhZHuvdkCnkSHbMbmOnrfEGPwQiACiPlnihiaOdbjPqPiTXaHDoJXjSlZmltGqNHHNrcKdlFSCdmVOuvDcBLdSklyGJmcLTbSFtALdGlPkqqecJrpLCXNPWefoTJNgEJlyMEPneVaxxduAAEqQpHWZodWyRkDAxzyMnFMcjSVqeRXLqsNyNtQBbuRvunZflWSbbvXXdkyLikYqutQhLPONXbvhcQZJPSWnOulqQaXmbfFxAkqfYeseSHOQidHwbcsOaMnSrrmGjjRmEMQNuknupMxJiIeVjmgZvbmjPIQTEhQFULQLBMPrxcFPvBinaOPYWGvYGRKxLZdwamfRQQFngcdSlvwjfaPbURasIsGJVHtcEAxnIIrhSriiXLOlbEBLXFElXJFGxHJczRBIxAuPKtBisjKBwfzZFagdNmjdwIRvwzLkFKWRTDPxJCmpzHUcrPiiXXHnOIlqNVoGSXZewdnCRhuxeYGPVTfrNTQNOxZmxInOazUYNTNDgzsxlgiVEHPKMfbesvPHUqpNkUqbzeuzfdrsuLDpKHMUbBMKczKKWOdYoIXoPYtEjfOnlQLoGnbQUCuERdEFaptwnsHzTJDsuZkKtzMpFaZobynZdzNydEeJJHDYaQcwUxcqvwfWwNUsCiLvkZQiSfzAHftYgAmVsXgtmcYgTqJIawstRYJrZdSxlfRiqTufgEQVambeZZmaAyRQbcmdjVUZZCgqDrSeltJGXPMgZnGDZqISrGDOClxXCxMjmKqEPwKHoOfOeyGmqWqihqjINXLqnyTesZePQRqaWDQNqpLgNrAUKulklmckTijUltQKuWQDwpLmDyxLppPVMwsmBIpOwQttYFMjgJQZLYFPmxWFLIeZihkRNnkzoypBICIxgEuYsVWGIGRbbxqVasYnstWomJnHwmtOhAFSpttRYYzBmyEtZXiCthvKvWszTXDbiJbGXMcrYpKAgvUVFtdKUfvdMfhAryctklUCEdjetjuGNfJjajZtvzdYaqInKtFPPLYmRaXPdQzxdSQfmZDEVHlHGEGNSPRFJuIfKLLfUmnHxHnRjmzQPNlqrXgifUdzAGKVabYqvcDeYoTYgPsBUqehrBhmQUgTvDnsdpuhUoxskDdppTsYMcnDIPSwKIqhXDCIxOuXrywahvVavvHkPuaenjLmEbMgrkrQLHEAwrhHkPRNvonNQKqprqOFVZKAtpRSpvQUxMoXCMZLSSbnLEFsjVfANdQNQVwTmGxqVjVqRuxREAhuaDrFgEZpYKhwWPEKBevBfsOIcaZKyykQafzmGPLRAKDtTcJxJVgiiuUkmyMYuDUNEUhBEdoBLJnamtLmMJQgmLiUELIhLpiEvpOXOvXCPUeldLFqkKOwfacqIaRcnnZvERKRMCKUkMABbDHytQqQblrvoxOZkwzosQfDKGtIdfcXRJNqlBNwOCWoQBcEWyqrMlYZIAXYJmLfnjoJepgSFvrgajaBAIksoyeHqgqbGvpAstMIGmIhRYGGNPRIfOQKsGoKgxtsidhTaAePRCBFqZgPDWCIkqOJezGVkjfYUCZTlInbxBXwUAVRsxHTQtJFnnpmMvXDYCVlEmnZBKhmmxQOIQzxFWpJQkQoSAYzTEiDWEOsVLNrbfzeHFRyeYATakQQWmFDLPbVMCJcWjFGJjfqCoVzlbNNEsqxdSmNPjTjHYOkuEMFLkXYGaoJlraLqayMeCsTjWNRDPBywBJLAPVkGQqTwApVVwYAetlwSbzsdHWsTwSIcctkyKDuRWYDQikRqsKTMJchrliONJeaZIzwPQrNbTwxsGdwuduvibtYndRwpdsvyCktRHFalvUuEKMqXbItfGcNGWsGzubdPMYayOUOINjpcFBeESdwpdlTYmrPsLsVDhpTzoMegKrytNVZkfJRPuDCUXxSlSthOohmsuxmIZUedzxKmowKOdXTMcEtdpHaPWgIsIjrViKrQOCONlSuazmLuCUjLltOGXeNgJKedTVrrVCpWYWHyVrdXpKgNaMJVjbXxnVMSChdWKuZdqpisvrkBJPoURDYxWOtpjzZoOpWzyUuYNhCzRoHsMjmmWDcXzQiHIyjwdhPNwiPqFxeUfMVFQGImhykFgMIlQEoZCaRoqSBXTSWAeDumdbsOGtATwEdZlLfoBKiTvodQBGOEcuATWXfiinSjPmJKcWgQrTVYVrwlyMWhxqNbCMpIQNoSMGTiWfPTCezUjYcdWppnsYJihLQCqbNLRGgqrwHuIvsazapTpoPZIyZyeeSueJuTIhpHMEJfJpScshJubJGfkusuVBgfTWQoywSSliQQSfbvaHKiLnyjdSbpMkdBgXepoSsHnCQaYuHQqZsoEOmJCiuQUpJkmfyfbIShzlZpHFmLCsbknEAkKXKfRTRnuwdBeuOGgFbJLbDksHVapaRayWzwoYBEpmrlAxrUxYMUekKbpjPNfjUCjhbdMAnJmYQVZBQZkFVweHDAlaqJjRqoQPoOMLhyvYCzqEuQsAFoxWrzRnTVjStPadhsESlERnKhpEPsfDxNvxqcOyIulaCkmPdambLHvGhTZzysvqFauEgkFRItPfvisehFmoBhQqmkfbHVsgfHXDPJVyhwPllQpuYLRYvGodxKjkarnSNgsXoKEMlaSKxKdcVgvOkuLcfLFfdtXGTclqfPOfeoVLbqcjcXCUEBgAGplrkgsmIEhWRZLlGPGCwKWRaCKMkBHTAcypUrYjWwCLtOPVygMwMANGoQwFnCqFrUGMCRZUGJKTZIGPyldsifauoMnJPLTcDHmilcmahlqOELaAUYDBuzsVywnDQfwRLGIWozYaOAilMBcObErwgTDNGWnwQMUgFFSKtPDMEoEQCTKVREqrXZSGLqwTMcxHfWotDllNkIJPMbXzjDVjPOOjCFuIvTyhXKLyhUScOXvYthRXpPfKwMhptXaxIxgqBoUqzrWbaoLTVpQoottZyPFfNOoMioXHRuFwMRYUiKvcWPkrayyTLOCFJlAyslDameIuqVAuxErqFPEWIScKpBORIuZqoXlZuTvAjEdlEWDODFRregDTqGNoFBIHxvimmIZwLfFyKUfEWAnNBdtdzDmTPXtpHRGdIbuucfTjOygZsTxPjfweXhSUkMhPjMaxKlMIJMOXcnQfyzeOcbWwNbeH", msg.GetContent().GetDescription())
 	require.Equal(t, "gov", msg.Route())

x/gov/spec/06_params.md

@@ -26,3 +26,12 @@ The governance module contains the following parameters:
 __NOTE__: The governance module contains parameters that are objects unlike other
 modules. If only a subset of parameters are desired to be changed, only they need
 to be included and not the entire parameter object structure.
+
+## Constant Variables
+
+| Key                    | Type             | Constant Value         |
+|------------------------|------------------|------------------------|
+| MinInitialDepositRatio | string (sdk.Dec) | "0.500000000000000000" |
+
+### MinInitialDepositRatio
+The ratio representing the proportion of the deposit value that must be paid at proposal submission.

x/gov/types/errors.go

@@ -14,4 +14,5 @@ var (
 	ErrInvalidVote             = sdkerrors.Register(ModuleName, 7, "invalid vote option")
 	ErrInvalidGenesis          = sdkerrors.Register(ModuleName, 8, "invalid genesis state")
 	ErrNoProposalHandlerExists = sdkerrors.Register(ModuleName, 9, "no handler exists for proposal type")
+	ErrMinDepositTooSmall      = sdkerrors.Register(ModuleName, 10, "minimum deposit is too small")
 )

x/gov/types/params.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"time"
 
-	yaml "gopkg.in/yaml.v2"
+	"gopkg.in/yaml.v2"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
@@ -21,6 +21,7 @@ var (
 	DefaultQuorum           = sdk.NewDecWithPrec(334, 3)
 	DefaultThreshold        = sdk.NewDecWithPrec(5, 1)
 	DefaultVetoThreshold    = sdk.NewDecWithPrec(334, 3)
+	MinInitialDepositRatio  = sdk.NewDecWithPrec(5, 1)
 )
 
 // Parameter store key