diff --git a/proto/umee/oracle/v1/genesis.proto b/proto/umee/oracle/v1/genesis.proto
index fa0a6bf790..73a5ff88b0 100644
--- a/proto/umee/oracle/v1/genesis.proto
+++ b/proto/umee/oracle/v1/genesis.proto
@@ -2,7 +2,6 @@ syntax = "proto3";
 package umee.oracle.v1;
 
 import "gogoproto/gogo.proto";
-import "cosmos/base/v1beta1/coin.proto";
 import "umee/oracle/v1/oracle.proto";
 
 option go_package = "github.com/umee-network/umee/v3/x/oracle/types";
@@ -23,8 +22,9 @@ message GenesisState {
       [(gogoproto.nullable) = false];
   repeated AggregateExchangeRateVote aggregate_exchange_rate_votes = 6
       [(gogoproto.nullable) = false];
-  repeated cosmos.base.v1beta1.DecCoin medians         = 7 [(gogoproto.nullable) = false];
-  repeated HistoricPrice               historic_prices = 8 [(gogoproto.nullable) = false];
+  repeated HistoricPrice               historic_prices  = 8 [(gogoproto.nullable) = false];
+  repeated ExchangeRateTuple medians          = 7 [(gogoproto.nullable) = false];
+  repeated ExchangeRateTuple medianDeviations = 9 [(gogoproto.nullable) = false];
 }
 
 // FeederDelegation is the address for where oracle feeder authority are
@@ -41,3 +41,11 @@ message MissCounter {
   string validator_address = 1;
   uint64 miss_counter      = 2;
 }
+
+// HistoricPrice is an instance of a price "stamp"
+message HistoricPrice {
+  ExchangeRateTuple exchange_rate_tuple = 1 [
+    (gogoproto.nullable)   = false
+  ];
+  uint64 block_num = 2;
+}
diff --git a/proto/umee/oracle/v1/oracle.proto b/proto/umee/oracle/v1/oracle.proto
index baa0d6d349..0a6d46b281 100644
--- a/proto/umee/oracle/v1/oracle.proto
+++ b/proto/umee/oracle/v1/oracle.proto
@@ -108,12 +108,3 @@ message ExchangeRateTuple {
     (gogoproto.nullable)   = false
   ];
 }
-
-// HistoricPrice is an instance of a price "stamp"
-message HistoricPrice {
-  ExchangeRateTuple exchange_rate = 1 [
-    (gogoproto.customtype) = "github.com/cosmos/cosmos-sdk/types.Dec",
-    (gogoproto.nullable)   = false
-  ];
-  uint64 block_num = 2;
-}
diff --git a/x/oracle/keeper/historic_price.go b/x/oracle/keeper/historic_price.go
index eadeb5fc0e..cf6a84875e 100644
--- a/x/oracle/keeper/historic_price.go
+++ b/x/oracle/keeper/historic_price.go
@@ -12,34 +12,34 @@ import (
 )
 
 // median returns the median of a list of historic prices.
-func median(prices []types.HistoricPrice) sdk.Dec {
+func median(prices []sdk.Dec) sdk.Dec {
 	lenPrices := len(prices)
 	if lenPrices == 0 {
 		return sdk.ZeroDec()
 	}
 
 	sort.Slice(prices, func(i, j int) bool {
-		return prices[i].ExchangeRate.BigInt().
-			Cmp(prices[j].ExchangeRate.BigInt()) > 0
+		return prices[i].BigInt().
+			Cmp(prices[j].BigInt()) > 0
 	})
 
 	if lenPrices%2 == 0 {
-		return prices[lenPrices/2-1].ExchangeRate.
-			Add(prices[lenPrices/2].ExchangeRate).
+		return prices[lenPrices/2-1].
+			Add(prices[lenPrices/2]).
 			QuoInt64(2)
 	}
-	return prices[lenPrices/2].ExchangeRate
+	return prices[lenPrices/2]
 }
 
 // medianDeviation returns the standard deviation around the
 // median of a list of prices.
 // medianDeviation = ∑((price - median)^2 / len(prices))
-func medianDeviation(median sdk.Dec, prices []types.HistoricPrice) sdk.Dec {
+func medianDeviation(median sdk.Dec, prices []sdk.Dec) sdk.Dec {
 	lenPrices := len(prices)
 	medianDeviation := sdk.ZeroDec()
 
 	for _, price := range prices {
-		medianDeviation = medianDeviation.Add(price.ExchangeRate.
+		medianDeviation = medianDeviation.Add(price.
 			Sub(median).Abs().Power(2).
 			QuoInt64(int64(lenPrices)))
 	}
@@ -52,18 +52,16 @@ func medianDeviation(median sdk.Dec, prices []types.HistoricPrice) sdk.Dec {
 func (k Keeper) GetMedian(
 	ctx sdk.Context,
 	denom string,
-	blockNum uint64,
 ) (sdk.Dec, error) {
 	store := ctx.KVStore(k.storeKey)
-	bz := store.Get(types.KeyMedian(denom, blockNum))
+	bz := store.Get(types.KeyMedian(denom))
 	if bz == nil {
-		return sdk.ZeroDec(), sdkerrors.Wrap(types.ErrNoMedian, fmt.Sprintf("denom: %s block: %d", denom, blockNum))
+		return sdk.ZeroDec(), sdkerrors.Wrap(types.ErrNoMedian, fmt.Sprintf("denom: %s", denom))
 	}
 
-	decProto := sdk.DecProto{}
-	k.cdc.MustUnmarshal(bz, &decProto)
-
-	return decProto.Dec, nil
+	median := sdk.DecProto{}
+	k.cdc.MustUnmarshal(bz, &median)
+	return median.Dec, nil
 }
 
 // SetMedian uses all the historic prices of a given denom to calculate
@@ -78,7 +76,7 @@ func (k Keeper) SetMedian(
 	historicPrices := k.getHistoricPrices(ctx, denom)
 	median := median(historicPrices)
 	bz := k.cdc.MustMarshal(&sdk.DecProto{Dec: median})
-	store.Set(types.KeyMedian(denom, uint64(ctx.BlockHeight())), bz)
+	store.Set(types.KeyMedian(denom), bz)
 	k.setMedianDeviation(ctx, denom, median, historicPrices)
 }
 
@@ -87,12 +85,11 @@ func (k Keeper) SetMedian(
 func (k Keeper) GetMedianDeviation(
 	ctx sdk.Context,
 	denom string,
-	blockNum uint64,
 ) (sdk.Dec, error) {
 	store := ctx.KVStore(k.storeKey)
-	bz := store.Get(types.KeyMedianDeviation(denom, blockNum))
+	bz := store.Get(types.KeyMedianDeviation(denom))
 	if bz == nil {
-		return sdk.ZeroDec(), sdkerrors.Wrap(types.ErrNoMedianDeviation, fmt.Sprintf("denom: %s block: %d", denom, blockNum))
+		return sdk.ZeroDec(), sdkerrors.Wrap(types.ErrNoMedianDeviation, fmt.Sprintf("denom: %s", denom))
 	}
 
 	decProto := sdk.DecProto{}
@@ -107,27 +104,23 @@ func (k Keeper) setMedianDeviation(
 	ctx sdk.Context,
 	denom string,
 	median sdk.Dec,
-	prices []types.HistoricPrice,
+	prices []sdk.Dec,
 ) {
 	store := ctx.KVStore(k.storeKey)
 	medianDeviation := medianDeviation(median, prices)
 	bz := k.cdc.MustMarshal(&sdk.DecProto{Dec: medianDeviation})
-	store.Set(types.KeyMedianDeviation(denom, uint64(ctx.BlockHeight())), bz)
+	store.Set(types.KeyMedianDeviation(denom), bz)
 }
 
 // getHistoricPrices returns all the historic prices of a given denom.
 func (k Keeper) getHistoricPrices(
 	ctx sdk.Context,
 	denom string,
-) []types.HistoricPrice {
-	historicPrices := []types.HistoricPrice{}
-
-	k.IterateHistoricPrices(ctx, denom, func(exchangeRate sdk.Dec, blockNum uint64) bool {
-		historicPrices = append(historicPrices, types.HistoricPrice{
-			ExchangeRate: exchangeRate,
-			BlockNum:     blockNum,
-		})
+) []sdk.Dec {
+	historicPrices := []sdk.Dec{}
 
+	k.IterateHistoricPrices(ctx, denom, func(exchangeRate sdk.Dec) bool {
+		historicPrices = append(historicPrices, exchangeRate)
 		return false
 	})
 
@@ -140,7 +133,7 @@ func (k Keeper) getHistoricPrices(
 func (k Keeper) IterateHistoricPrices(
 	ctx sdk.Context,
 	denom string,
-	handler func(sdk.Dec, uint64) bool,
+	handler func(sdk.Dec) bool,
 ) {
 	store := ctx.KVStore(k.storeKey)
 
@@ -150,9 +143,9 @@ func (k Keeper) IterateHistoricPrices(
 	defer iter.Close()
 
 	for ; iter.Valid(); iter.Next() {
-		var historicPrice types.HistoricPrice
-		k.cdc.MustUnmarshal(iter.Value(), &historicPrice)
-		if handler(historicPrice.ExchangeRate, historicPrice.BlockNum) {
+		decProto := sdk.DecProto{}
+		k.cdc.MustUnmarshal(iter.Value(), &decProto)
+		if handler(decProto.Dec) {
 			break
 		}
 	}
@@ -167,10 +160,7 @@ func (k Keeper) AddHistoricPrice(
 ) {
 	store := ctx.KVStore(k.storeKey)
 	block := uint64(ctx.BlockHeight())
-	bz := k.cdc.MustMarshal(&types.HistoricPrice{
-		ExchangeRate: exchangeRate,
-		BlockNum:     block,
-	})
+	bz := k.cdc.MustMarshal(&sdk.DecProto{Dec: exchangeRate})
 	store.Set(types.KeyHistoricPrice(denom, block), bz)
 }
 
@@ -190,10 +180,9 @@ func (k Keeper) DeleteHistoricPrice(
 func (k Keeper) DeleteMedian(
 	ctx sdk.Context,
 	denom string,
-	blockNum uint64,
 ) {
 	store := ctx.KVStore(k.storeKey)
-	store.Delete(types.KeyMedian(denom, blockNum))
+	store.Delete(types.KeyMedian(denom))
 }
 
 // DeleteMedianDeviation deletes a given denom's standard deviation around
@@ -201,8 +190,7 @@ func (k Keeper) DeleteMedian(
 func (k Keeper) DeleteMedianDeviation(
 	ctx sdk.Context,
 	denom string,
-	blockNum uint64,
 ) {
 	store := ctx.KVStore(k.storeKey)
-	store.Delete(types.KeyMedianDeviation(denom, blockNum))
+	store.Delete(types.KeyMedianDeviation(denom))
 }
diff --git a/x/oracle/keeper/historic_price_test.go b/x/oracle/keeper/historic_price_test.go
index f342645895..8be293bec1 100644
--- a/x/oracle/keeper/historic_price_test.go
+++ b/x/oracle/keeper/historic_price_test.go
@@ -27,24 +27,24 @@ func (s *IntegrationTestSuite) TestSetHistoraclePricing() {
 
 	// set and check median and median standard deviation
 	app.OracleKeeper.SetMedian(ctx, displayDenom)
-	median, err := app.OracleKeeper.GetMedian(ctx, displayDenom, uint64(ctx.BlockHeight()))
+	median, err := app.OracleKeeper.GetMedian(ctx, displayDenom)
 	s.Require().NoError(err)
 	s.Require().Equal(median, sdk.MustNewDecFromStr("1.15"))
 
-	medianDeviation, err := app.OracleKeeper.GetMedianDeviation(ctx, displayDenom, uint64(ctx.BlockHeight()))
+	medianDeviation, err := app.OracleKeeper.GetMedianDeviation(ctx, displayDenom)
 	s.Require().NoError(err)
 	s.Require().Equal(medianDeviation, sdk.MustNewDecFromStr("0.0225"))
 
 	// delete first historic price, median, and median standard deviation
 	app.OracleKeeper.DeleteHistoricPrice(ctx, displayDenom, uint64(ctx.BlockHeight()-3))
-	app.OracleKeeper.DeleteMedian(ctx, displayDenom, uint64(ctx.BlockHeight()))
-	app.OracleKeeper.DeleteMedianDeviation(ctx, displayDenom, uint64(ctx.BlockHeight()))
+	app.OracleKeeper.DeleteMedian(ctx, displayDenom)
+	app.OracleKeeper.DeleteMedianDeviation(ctx, displayDenom)
 
-	median, err = app.OracleKeeper.GetMedian(ctx, displayDenom, uint64(ctx.BlockHeight()))
+	median, err = app.OracleKeeper.GetMedian(ctx, displayDenom)
 	s.Require().Error(err, sdkerrors.Wrap(types.ErrUnknownDenom, displayDenom))
 	s.Require().Equal(median, sdk.ZeroDec())
 
-	medianDeviation, err = app.OracleKeeper.GetMedianDeviation(ctx, displayDenom, uint64(ctx.BlockHeight()))
+	medianDeviation, err = app.OracleKeeper.GetMedianDeviation(ctx, displayDenom)
 	s.Require().Error(err, sdkerrors.Wrap(types.ErrUnknownDenom, displayDenom))
 	s.Require().Equal(median, sdk.ZeroDec())
 }
diff --git a/x/oracle/types/genesis.pb.go b/x/oracle/types/genesis.pb.go
index 8833eabe74..a4e2adb6e6 100644
--- a/x/oracle/types/genesis.pb.go
+++ b/x/oracle/types/genesis.pb.go
@@ -5,7 +5,6 @@ package types
 
 import (
 	fmt "fmt"
-	types "github.com/cosmos/cosmos-sdk/types"
 	_ "github.com/gogo/protobuf/gogoproto"
 	proto "github.com/gogo/protobuf/proto"
 	io "io"
@@ -32,8 +31,9 @@ type GenesisState struct {
 	MissCounters                  []MissCounter                  `protobuf:"bytes,4,rep,name=miss_counters,json=missCounters,proto3" json:"miss_counters"`
 	AggregateExchangeRatePrevotes []AggregateExchangeRatePrevote `protobuf:"bytes,5,rep,name=aggregate_exchange_rate_prevotes,json=aggregateExchangeRatePrevotes,proto3" json:"aggregate_exchange_rate_prevotes"`
 	AggregateExchangeRateVotes    []AggregateExchangeRateVote    `protobuf:"bytes,6,rep,name=aggregate_exchange_rate_votes,json=aggregateExchangeRateVotes,proto3" json:"aggregate_exchange_rate_votes"`
-	Medians                       []types.DecCoin                `protobuf:"bytes,7,rep,name=medians,proto3" json:"medians"`
 	HistoricPrices                []HistoricPrice                `protobuf:"bytes,8,rep,name=historic_prices,json=historicPrices,proto3" json:"historic_prices"`
+	Medians                       []ExchangeRateTuple            `protobuf:"bytes,7,rep,name=medians,proto3" json:"medians"`
+	MedianDeviations              []ExchangeRateTuple            `protobuf:"bytes,9,rep,name=medianDeviations,proto3" json:"medianDeviations"`
 }
 
 func (m *GenesisState) Reset()         { *m = GenesisState{} }
@@ -150,51 +150,93 @@ func (m *MissCounter) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_MissCounter proto.InternalMessageInfo
 
+// HistoricPrice is an instance of a price "stamp"
+type HistoricPrice struct {
+	ExchangeRateTuple ExchangeRateTuple `protobuf:"bytes,1,opt,name=exchange_rate_tuple,json=exchangeRateTuple,proto3" json:"exchange_rate_tuple"`
+	BlockNum          uint64            `protobuf:"varint,2,opt,name=block_num,json=blockNum,proto3" json:"block_num,omitempty"`
+}
+
+func (m *HistoricPrice) Reset()         { *m = HistoricPrice{} }
+func (m *HistoricPrice) String() string { return proto.CompactTextString(m) }
+func (*HistoricPrice) ProtoMessage()    {}
+func (*HistoricPrice) Descriptor() ([]byte, []int) {
+	return fileDescriptor_c99b4af40468acc1, []int{3}
+}
+func (m *HistoricPrice) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *HistoricPrice) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_HistoricPrice.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 *HistoricPrice) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_HistoricPrice.Merge(m, src)
+}
+func (m *HistoricPrice) XXX_Size() int {
+	return m.Size()
+}
+func (m *HistoricPrice) XXX_DiscardUnknown() {
+	xxx_messageInfo_HistoricPrice.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_HistoricPrice proto.InternalMessageInfo
+
 func init() {
 	proto.RegisterType((*GenesisState)(nil), "umee.oracle.v1.GenesisState")
 	proto.RegisterType((*FeederDelegation)(nil), "umee.oracle.v1.FeederDelegation")
 	proto.RegisterType((*MissCounter)(nil), "umee.oracle.v1.MissCounter")
+	proto.RegisterType((*HistoricPrice)(nil), "umee.oracle.v1.HistoricPrice")
 }
 
 func init() { proto.RegisterFile("umee/oracle/v1/genesis.proto", fileDescriptor_c99b4af40468acc1) }
 
 var fileDescriptor_c99b4af40468acc1 = []byte{
-	// 554 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x8c, 0x93, 0xcd, 0x6e, 0xd3, 0x40,
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-	0xff, 0xff, 0xc2, 0x31, 0xa6, 0xac, 0x67, 0x04, 0x00, 0x00,
+	// 584 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x94, 0xcd, 0x6e, 0xd3, 0x4e,
+	0x14, 0xc5, 0xe3, 0xb6, 0xff, 0xb4, 0x9d, 0x34, 0xf9, 0xb7, 0x03, 0x42, 0x56, 0x4a, 0xdd, 0x34,
+	0x12, 0x52, 0x11, 0x60, 0xab, 0x2d, 0x2f, 0xd0, 0x50, 0x0a, 0x8b, 0x82, 0xa2, 0x94, 0x0f, 0x09,
+	0x09, 0x59, 0x13, 0xfb, 0xc6, 0xb1, 0x1a, 0x7b, 0xac, 0x99, 0xb1, 0x29, 0x62, 0xcd, 0x9e, 0x47,
+	0x60, 0xcd, 0x93, 0x64, 0xd9, 0x25, 0x2b, 0x3e, 0x92, 0x17, 0x41, 0x1e, 0x4f, 0x1a, 0xc7, 0x6d,
+	0x51, 0xd8, 0xd9, 0xf7, 0xfc, 0xee, 0x39, 0x57, 0xf6, 0x9d, 0x41, 0x77, 0xe3, 0x00, 0xc0, 0xa2,
+	0x8c, 0x38, 0x03, 0xb0, 0x92, 0x3d, 0xcb, 0x83, 0x10, 0xb8, 0xcf, 0xcd, 0x88, 0x51, 0x41, 0x71,
+	0x2d, 0x55, 0xcd, 0x4c, 0x35, 0x93, 0xbd, 0xfa, 0x6d, 0x8f, 0x7a, 0x54, 0x4a, 0x56, 0xfa, 0x94,
+	0x51, 0xf5, 0xcd, 0x82, 0x87, 0xe2, 0xa5, 0xd8, 0xfc, 0x5a, 0x46, 0x6b, 0xcf, 0x32, 0xd3, 0x53,
+	0x41, 0x04, 0xe0, 0xc7, 0xa8, 0x1c, 0x11, 0x46, 0x02, 0xae, 0x6b, 0x0d, 0x6d, 0xb7, 0xb2, 0x7f,
+	0xc7, 0x9c, 0x0d, 0x31, 0xdb, 0x52, 0x6d, 0x2d, 0x0d, 0x7f, 0x6c, 0x97, 0x3a, 0x8a, 0xc5, 0xaf,
+	0x11, 0xee, 0x01, 0xb8, 0xc0, 0x6c, 0x17, 0x06, 0xe0, 0x11, 0xe1, 0xd3, 0x90, 0xeb, 0x0b, 0x8d,
+	0xc5, 0xdd, 0xca, 0x7e, 0xa3, 0xe8, 0x70, 0x2c, 0xc9, 0xa3, 0x4b, 0x50, 0x79, 0x6d, 0xf4, 0x0a,
+	0x75, 0x8e, 0x5d, 0x54, 0x83, 0x73, 0xa7, 0x4f, 0x42, 0x0f, 0x6c, 0x46, 0x04, 0x70, 0x7d, 0x51,
+	0x5a, 0xee, 0x14, 0x2d, 0x9f, 0x2a, 0xaa, 0x43, 0x04, 0xbc, 0x8a, 0xa3, 0x01, 0xb4, 0xea, 0xa9,
+	0xe7, 0xb7, 0x9f, 0xdb, 0xf8, 0x8a, 0xc4, 0x3b, 0x55, 0xc8, 0xd5, 0x38, 0x3e, 0x46, 0xd5, 0xc0,
+	0xe7, 0xdc, 0x76, 0x68, 0x1c, 0x0a, 0x60, 0x5c, 0x5f, 0x92, 0x21, 0x9b, 0xc5, 0x90, 0x17, 0x3e,
+	0xe7, 0x4f, 0x32, 0x46, 0x8d, 0xbc, 0x16, 0x4c, 0x4b, 0x1c, 0x7f, 0x42, 0x0d, 0xe2, 0x79, 0x2c,
+	0x9d, 0x1e, 0xec, 0x99, 0xb9, 0xed, 0x88, 0x41, 0x42, 0xd3, 0xf9, 0xff, 0x93, 0xd6, 0x0f, 0x8b,
+	0xd6, 0x87, 0x93, 0xbe, 0xfc, 0xb4, 0xed, 0xac, 0x49, 0x65, 0x6d, 0x91, 0xbf, 0x30, 0x1c, 0x33,
+	0xb4, 0x75, 0x53, 0x78, 0x96, 0x5c, 0x96, 0xc9, 0xf7, 0xe7, 0x4a, 0x7e, 0x33, 0x8d, 0xad, 0x93,
+	0x9b, 0x00, 0x8e, 0x4f, 0xd0, 0xff, 0x7d, 0x9f, 0x0b, 0xca, 0x7c, 0xc7, 0x8e, 0x98, 0xef, 0x00,
+	0xd7, 0x57, 0x64, 0xca, 0x56, 0x31, 0xe5, 0xb9, 0xc2, 0xda, 0x29, 0xa5, 0x9c, 0x6b, 0xfd, 0x7c,
+	0x91, 0xe3, 0x43, 0xb4, 0x1c, 0x80, 0xeb, 0x93, 0x90, 0xeb, 0xcb, 0xf3, 0xfe, 0xe5, 0xcc, 0x69,
+	0xd2, 0x87, 0x4f, 0xd1, 0x7a, 0xf6, 0x78, 0x04, 0x89, 0xaf, 0x96, 0x70, 0xf5, 0xdf, 0xbc, 0xae,
+	0x18, 0x34, 0x7b, 0x68, 0xbd, 0xb8, 0xb1, 0xf8, 0x1e, 0xaa, 0xa9, 0x7d, 0x27, 0xae, 0xcb, 0x80,
+	0x67, 0xa7, 0x65, 0xb5, 0x53, 0xcd, 0xaa, 0x87, 0x59, 0x11, 0x3f, 0x40, 0x1b, 0x09, 0x19, 0xf8,
+	0x2e, 0x11, 0x74, 0x4a, 0x2e, 0x48, 0x72, 0xfd, 0x52, 0x50, 0x70, 0xf3, 0x3d, 0xaa, 0xe4, 0x36,
+	0xec, 0xfa, 0x5e, 0xed, 0xfa, 0x5e, 0xbc, 0x83, 0xd6, 0xf2, 0x2b, 0x2c, 0x33, 0x96, 0x3a, 0x95,
+	0xdc, 0x7a, 0x36, 0x3f, 0x6b, 0xa8, 0x3a, 0xf3, 0x1b, 0xf0, 0x5b, 0x74, 0x6b, 0x76, 0x51, 0x44,
+	0xfa, 0x1d, 0xd4, 0xb9, 0x9f, 0xfb, 0x83, 0x6d, 0x40, 0x51, 0xc0, 0x9b, 0x68, 0xb5, 0x3b, 0xa0,
+	0xce, 0x99, 0x1d, 0xc6, 0x81, 0x1a, 0x65, 0x45, 0x16, 0x5e, 0xc6, 0x41, 0xeb, 0x64, 0xf8, 0xdb,
+	0x28, 0x0d, 0x47, 0x86, 0x76, 0x31, 0x32, 0xb4, 0x5f, 0x23, 0x43, 0xfb, 0x32, 0x36, 0x4a, 0x17,
+	0x63, 0xa3, 0xf4, 0x7d, 0x6c, 0x94, 0xde, 0x99, 0x9e, 0x2f, 0xfa, 0x71, 0xd7, 0x74, 0x68, 0x60,
+	0xa5, 0x03, 0x3c, 0x0a, 0x41, 0x7c, 0xa0, 0xec, 0x4c, 0xbe, 0x58, 0xc9, 0x81, 0x75, 0x3e, 0xb9,
+	0xc9, 0xc4, 0xc7, 0x08, 0x78, 0xb7, 0x2c, 0xaf, 0xb1, 0x83, 0x3f, 0x01, 0x00, 0x00, 0xff, 0xff,
+	0x05, 0xf1, 0x47, 0x75, 0x29, 0x05, 0x00, 0x00,
 }
 
 func (m *GenesisState) Marshal() (dAtA []byte, err error) {
@@ -217,6 +259,20 @@ func (m *GenesisState) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if len(m.MedianDeviations) > 0 {
+		for iNdEx := len(m.MedianDeviations) - 1; iNdEx >= 0; iNdEx-- {
+			{
+				size, err := m.MedianDeviations[iNdEx].MarshalToSizedBuffer(dAtA[:i])
+				if err != nil {
+					return 0, err
+				}
+				i -= size
+				i = encodeVarintGenesis(dAtA, i, uint64(size))
+			}
+			i--
+			dAtA[i] = 0x4a
+		}
+	}
 	if len(m.HistoricPrices) > 0 {
 		for iNdEx := len(m.HistoricPrices) - 1; iNdEx >= 0; iNdEx-- {
 			{
@@ -400,6 +456,44 @@ func (m *MissCounter) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	return len(dAtA) - i, nil
 }
 
+func (m *HistoricPrice) 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 *HistoricPrice) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *HistoricPrice) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if m.BlockNum != 0 {
+		i = encodeVarintGenesis(dAtA, i, uint64(m.BlockNum))
+		i--
+		dAtA[i] = 0x10
+	}
+	{
+		size, err := m.ExchangeRateTuple.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
@@ -461,6 +555,12 @@ func (m *GenesisState) Size() (n int) {
 			n += 1 + l + sovGenesis(uint64(l))
 		}
 	}
+	if len(m.MedianDeviations) > 0 {
+		for _, e := range m.MedianDeviations {
+			l = e.Size()
+			n += 1 + l + sovGenesis(uint64(l))
+		}
+	}
 	return n
 }
 
@@ -497,6 +597,20 @@ func (m *MissCounter) Size() (n int) {
 	return n
 }
 
+func (m *HistoricPrice) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = m.ExchangeRateTuple.Size()
+	n += 1 + l + sovGenesis(uint64(l))
+	if m.BlockNum != 0 {
+		n += 1 + sovGenesis(uint64(m.BlockNum))
+	}
+	return n
+}
+
 func sovGenesis(x uint64) (n int) {
 	return (math_bits.Len64(x|1) + 6) / 7
 }
@@ -764,7 +878,7 @@ func (m *GenesisState) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			m.Medians = append(m.Medians, types.DecCoin{})
+			m.Medians = append(m.Medians, ExchangeRateTuple{})
 			if err := m.Medians[len(m.Medians)-1].Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
@@ -803,6 +917,40 @@ func (m *GenesisState) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
+		case 9:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field MedianDeviations", 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
+			}
+			m.MedianDeviations = append(m.MedianDeviations, ExchangeRateTuple{})
+			if err := m.MedianDeviations[len(m.MedianDeviations)-1].Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipGenesis(dAtA[iNdEx:])
@@ -1039,6 +1187,108 @@ func (m *MissCounter) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *HistoricPrice) 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: HistoricPrice: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: HistoricPrice: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field ExchangeRateTuple", 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.ExchangeRateTuple.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		case 2:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field BlockNum", wireType)
+			}
+			m.BlockNum = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenesis
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.BlockNum |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+		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
diff --git a/x/oracle/types/keys.go b/x/oracle/types/keys.go
index 39d21967f9..c53dfee897 100644
--- a/x/oracle/types/keys.go
+++ b/x/oracle/types/keys.go
@@ -57,14 +57,14 @@ func KeyAggregateExchangeRateVote(v sdk.ValAddress) []byte {
 	return util.ConcatBytes(0, KeyPrefixAggregateExchangeRateVote, address.MustLengthPrefix(v))
 }
 
-// KeyMedian - stored by *denom* and *block*
-func KeyMedian(denom string, blockNum uint64) (key []byte) {
-	return util.ConcatBytes(0, KeyPrefixMedian, []byte(denom), uintWithNullPrefix(blockNum))
+// KeyMedian - stored by *denom*
+func KeyMedian(denom string) (key []byte) {
+	return util.ConcatBytes(0, KeyPrefixMedian, []byte(denom))
 }
 
-// KeyMedianDeviation - stored by *denom* and *block*
-func KeyMedianDeviation(denom string, blockNum uint64) (key []byte) {
-	return util.ConcatBytes(0, KeyPrefixMedianDeviation, []byte(denom), uintWithNullPrefix(blockNum))
+// KeyMedianDeviation - stored by *denom*
+func KeyMedianDeviation(denom string) (key []byte) {
+	return util.ConcatBytes(0, KeyPrefixMedianDeviation, []byte(denom))
 }
 
 // KeyHistoricPrice - stored by *denom* and *block*
diff --git a/x/oracle/types/oracle.pb.go b/x/oracle/types/oracle.pb.go
index 0bded5ff66..c0580e2cf5 100644
--- a/x/oracle/types/oracle.pb.go
+++ b/x/oracle/types/oracle.pb.go
@@ -40,7 +40,7 @@ type Params struct {
 	// Prune Period represents the maximum amount of blocks which we want
 	// to keep a record of our set of exchange rates.
 	PrunePeriod uint64 `protobuf:"varint,10,opt,name=prune_period,json=prunePeriod,proto3" json:"prune_period,omitempty"`
-	// Medion Period reperesents the amound blocks we will wait between
+	// Median Period represents the amount blocks we will wait between
 	// calculating the median and standard deviation of the median of
 	// historic prices in the last Prune Period.
 	MedianPeriod uint64 `protobuf:"varint,11,opt,name=median_period,json=medianPeriod,proto3" json:"median_period,omitempty"`
@@ -237,113 +237,70 @@ func (m *ExchangeRateTuple) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_ExchangeRateTuple proto.InternalMessageInfo
 
-// HistoricPrice is an instance of a price "stamp"
-type HistoricPrice struct {
-	ExchangeRate github_com_cosmos_cosmos_sdk_types.Dec `protobuf:"bytes,1,opt,name=exchange_rate,json=exchangeRate,proto3,customtype=github.com/cosmos/cosmos-sdk/types.Dec" json:"exchange_rate" yaml:"exchange_rate"`
-	BlockNum     uint64                                 `protobuf:"varint,2,opt,name=block_num,json=blockNum,proto3" json:"block_num,omitempty"`
-}
-
-func (m *HistoricPrice) Reset()         { *m = HistoricPrice{} }
-func (m *HistoricPrice) String() string { return proto.CompactTextString(m) }
-func (*HistoricPrice) ProtoMessage()    {}
-func (*HistoricPrice) Descriptor() ([]byte, []int) {
-	return fileDescriptor_8893c9e0e94ceb54, []int{5}
-}
-func (m *HistoricPrice) XXX_Unmarshal(b []byte) error {
-	return m.Unmarshal(b)
-}
-func (m *HistoricPrice) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	if deterministic {
-		return xxx_messageInfo_HistoricPrice.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 *HistoricPrice) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_HistoricPrice.Merge(m, src)
-}
-func (m *HistoricPrice) XXX_Size() int {
-	return m.Size()
-}
-func (m *HistoricPrice) XXX_DiscardUnknown() {
-	xxx_messageInfo_HistoricPrice.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_HistoricPrice proto.InternalMessageInfo
-
 func init() {
 	proto.RegisterType((*Params)(nil), "umee.oracle.v1.Params")
 	proto.RegisterType((*Denom)(nil), "umee.oracle.v1.Denom")
 	proto.RegisterType((*AggregateExchangeRatePrevote)(nil), "umee.oracle.v1.AggregateExchangeRatePrevote")
 	proto.RegisterType((*AggregateExchangeRateVote)(nil), "umee.oracle.v1.AggregateExchangeRateVote")
 	proto.RegisterType((*ExchangeRateTuple)(nil), "umee.oracle.v1.ExchangeRateTuple")
-	proto.RegisterType((*HistoricPrice)(nil), "umee.oracle.v1.HistoricPrice")
 }
 
 func init() { proto.RegisterFile("umee/oracle/v1/oracle.proto", fileDescriptor_8893c9e0e94ceb54) }
 
 var fileDescriptor_8893c9e0e94ceb54 = []byte{
-	// 869 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xb4, 0x55, 0xbf, 0x6f, 0x23, 0x45,
-	0x14, 0xf6, 0x72, 0x49, 0x88, 0xc7, 0xf6, 0x1d, 0xd9, 0x4b, 0xc0, 0x5c, 0x90, 0x37, 0x99, 0x13,
-	0x47, 0x9a, 0xb3, 0x75, 0x1c, 0x12, 0x22, 0x1d, 0xab, 0x70, 0x50, 0x1c, 0xc8, 0x1a, 0x9d, 0x0e,
-	0x89, 0x66, 0x35, 0xbb, 0x3b, 0xd8, 0xa3, 0xec, 0xee, 0xac, 0x66, 0x66, 0x9d, 0xa4, 0xa1, 0xa6,
-	0x42, 0x94, 0x94, 0xa9, 0xe9, 0x41, 0x34, 0xf4, 0x29, 0xaf, 0x44, 0x14, 0x0b, 0x24, 0x0d, 0xf5,
-	0xfe, 0x03, 0xa0, 0xf9, 0xb1, 0xc9, 0xda, 0x71, 0x91, 0x08, 0x51, 0x79, 0xde, 0xfb, 0xde, 0x8f,
-	0xef, 0xbd, 0x99, 0xcf, 0x0b, 0xb6, 0x8b, 0x94, 0x90, 0x11, 0xe3, 0x38, 0x4a, 0xc8, 0x68, 0xf6,
-	0xc4, 0x9e, 0x86, 0x39, 0x67, 0x92, 0xb9, 0x77, 0x15, 0x38, 0xb4, 0xae, 0xd9, 0x93, 0x07, 0x9b,
-	0x13, 0x36, 0x61, 0x1a, 0x1a, 0xa9, 0x93, 0x89, 0x82, 0xff, 0xac, 0x81, 0xb5, 0x31, 0xe6, 0x38,
-	0x15, 0xee, 0x87, 0xa0, 0x33, 0x63, 0x92, 0x04, 0x39, 0xe1, 0x94, 0xc5, 0x7d, 0x67, 0xc7, 0xd9,
-	0x5b, 0xf1, 0xdf, 0xac, 0x4a, 0xcf, 0x3d, 0xc1, 0x69, 0xb2, 0x0f, 0x1b, 0x20, 0x44, 0x40, 0x59,
-	0x63, 0x6d, 0xb8, 0x19, 0xb8, 0xab, 0x31, 0x39, 0xe5, 0x44, 0x4c, 0x59, 0x12, 0xf7, 0x5f, 0xdb,
-	0x71, 0xf6, 0xda, 0xfe, 0xa7, 0x67, 0xa5, 0xd7, 0xfa, 0xbd, 0xf4, 0x1e, 0x4d, 0xa8, 0x9c, 0x16,
-	0xe1, 0x30, 0x62, 0xe9, 0x28, 0x62, 0x22, 0x65, 0xc2, 0xfe, 0x3c, 0x16, 0xf1, 0xe1, 0x48, 0x9e,
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 }
 
 func (this *Params) Equal(that interface{}) bool {
@@ -680,44 +637,6 @@ func (m *ExchangeRateTuple) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	return len(dAtA) - i, nil
 }
 
-func (m *HistoricPrice) 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 *HistoricPrice) MarshalTo(dAtA []byte) (int, error) {
-	size := m.Size()
-	return m.MarshalToSizedBuffer(dAtA[:size])
-}
-
-func (m *HistoricPrice) MarshalToSizedBuffer(dAtA []byte) (int, error) {
-	i := len(dAtA)
-	_ = i
-	var l int
-	_ = l
-	if m.BlockNum != 0 {
-		i = encodeVarintOracle(dAtA, i, uint64(m.BlockNum))
-		i--
-		dAtA[i] = 0x10
-	}
-	{
-		size := m.ExchangeRate.Size()
-		i -= size
-		if _, err := m.ExchangeRate.MarshalTo(dAtA[i:]); err != nil {
-			return 0, err
-		}
-		i = encodeVarintOracle(dAtA, i, uint64(size))
-	}
-	i--
-	dAtA[i] = 0xa
-	return len(dAtA) - i, nil
-}
-
 func encodeVarintOracle(dAtA []byte, offset int, v uint64) int {
 	offset -= sovOracle(v)
 	base := offset
@@ -844,20 +763,6 @@ func (m *ExchangeRateTuple) Size() (n int) {
 	return n
 }
 
-func (m *HistoricPrice) Size() (n int) {
-	if m == nil {
-		return 0
-	}
-	var l int
-	_ = l
-	l = m.ExchangeRate.Size()
-	n += 1 + l + sovOracle(uint64(l))
-	if m.BlockNum != 0 {
-		n += 1 + sovOracle(uint64(m.BlockNum))
-	}
-	return n
-}
-
 func sovOracle(x uint64) (n int) {
 	return (math_bits.Len64(x|1) + 6) / 7
 }
@@ -1696,108 +1601,6 @@ func (m *ExchangeRateTuple) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
-func (m *HistoricPrice) 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 ErrIntOverflowOracle
-			}
-			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: HistoricPrice: wiretype end group for non-group")
-		}
-		if fieldNum <= 0 {
-			return fmt.Errorf("proto: HistoricPrice: illegal tag %d (wire type %d)", fieldNum, wire)
-		}
-		switch fieldNum {
-		case 1:
-			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field ExchangeRate", wireType)
-			}
-			var msglen int
-			for shift := uint(0); ; shift += 7 {
-				if shift >= 64 {
-					return ErrIntOverflowOracle
-				}
-				if iNdEx >= l {
-					return io.ErrUnexpectedEOF
-				}
-				b := dAtA[iNdEx]
-				iNdEx++
-				msglen |= int(b&0x7F) << shift
-				if b < 0x80 {
-					break
-				}
-			}
-			if msglen < 0 {
-				return ErrInvalidLengthOracle
-			}
-			postIndex := iNdEx + msglen
-			if postIndex < 0 {
-				return ErrInvalidLengthOracle
-			}
-			if postIndex > l {
-				return io.ErrUnexpectedEOF
-			}
-			if err := m.ExchangeRate.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
-				return err
-			}
-			iNdEx = postIndex
-		case 2:
-			if wireType != 0 {
-				return fmt.Errorf("proto: wrong wireType = %d for field BlockNum", wireType)
-			}
-			m.BlockNum = 0
-			for shift := uint(0); ; shift += 7 {
-				if shift >= 64 {
-					return ErrIntOverflowOracle
-				}
-				if iNdEx >= l {
-					return io.ErrUnexpectedEOF
-				}
-				b := dAtA[iNdEx]
-				iNdEx++
-				m.BlockNum |= uint64(b&0x7F) << shift
-				if b < 0x80 {
-					break
-				}
-			}
-		default:
-			iNdEx = preIndex
-			skippy, err := skipOracle(dAtA[iNdEx:])
-			if err != nil {
-				return err
-			}
-			if (skippy < 0) || (iNdEx+skippy) < 0 {
-				return ErrInvalidLengthOracle
-			}
-			if (iNdEx + skippy) > l {
-				return io.ErrUnexpectedEOF
-			}
-			iNdEx += skippy
-		}
-	}
-
-	if iNdEx > l {
-		return io.ErrUnexpectedEOF
-	}
-	return nil
-}
 func skipOracle(dAtA []byte) (n int, err error) {
 	l := len(dAtA)
 	iNdEx := 0