diff --git a/.gitignore b/.gitignore
index f5e564e4ff..39268bad97 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@ release/
 /build
 /coverage.txt
 __pycache__
+/dist
 
 # nix
 /result
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 90439fd0da..4e43e6a95c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,8 +7,9 @@
 - [cronos#11](https://github.com/crypto-org-chain/cronos/pull/11) embed gravity bridge module
 - [cronos#35](https://github.com/crypto-org-chain/cronos/pull/35) add support for ibc hook
 - [cronos#55](https://github.com/crypto-org-chain/cronos/pull/55) add support for ibc token conversion to crc20 
-
-- [cronos#45](https://github.com/crypto-org-chain/cronos/pull/45) Allow evm contract to call bank send and gravity send
+- [cronos#45](https://github.com/crypto-org-chain/cronos/pull/45) Allow evm contract to call bank send and gravity send
+- [cronos#59](https://github.com/crypto-org-chain/cronos/pull/59) gravity bridged tokens are converted to crc20
+  automatically
 
 *August 19, 2021*
 
diff --git a/app/app.go b/app/app.go
index 26b5101eba..3115ac5626 100644
--- a/app/app.go
+++ b/app/app.go
@@ -391,6 +391,16 @@ func New(
 		tracer, bApp.Trace(), // debug EVM based on Baseapp options
 	)
 
+	gravityKeeper := gravitykeeper.NewKeeper(
+		appCodec,
+		keys[gravitytypes.StoreKey],
+		app.GetSubspace(gravitytypes.ModuleName),
+		app.AccountKeeper,
+		stakingKeeper,
+		app.BankKeeper,
+		app.SlashingKeeper,
+		sdk.DefaultPowerReduction,
+	)
 	// this line is used by starport scaffolding # stargate/app/keeperDefinition
 
 	app.CronosKeeper = *cronosmodulekeeper.NewKeeper(
@@ -400,6 +410,7 @@ func New(
 		app.GetSubspace(cronosmoduletypes.ModuleName),
 		app.BankKeeper,
 		app.TransferKeeper,
+		gravityKeeper,
 		app.EvmKeeper,
 	)
 	cronosModule := cronosmodule.NewAppModule(appCodec, app.CronosKeeper)
@@ -413,17 +424,6 @@ func New(
 		&stakingKeeper, govRouter,
 	)
 
-	gravityKeeper := gravitykeeper.NewKeeper(
-		appCodec,
-		keys[gravitytypes.StoreKey],
-		app.GetSubspace(gravitytypes.ModuleName),
-		app.AccountKeeper,
-		stakingKeeper,
-		app.BankKeeper,
-		app.SlashingKeeper,
-		sdk.DefaultPowerReduction,
-	)
-
 	app.GravityKeeper = *gravityKeeper.SetHooks(app.CronosKeeper)
 
 	app.EvmKeeper.SetHooks(cronosmodulekeeper.NewLogProcessEvmHook(
diff --git a/contracts/src/ModuleCRC20.sol b/contracts/src/ModuleCRC20.sol
index efed0819e0..b1bbc18451 100644
--- a/contracts/src/ModuleCRC20.sol
+++ b/contracts/src/ModuleCRC20.sol
@@ -14,6 +14,15 @@ contract ModuleCRC20 is DSToken  {
         denom = denom_;
     }
 
+    // unsafe_burn burn tokens without user's approval and authentication, used internally
+    function unsafe_burn(address addr, uint amount) private {
+        // Deduct user's balance without approval
+        require(balanceOf[addr] >= amount, "ds-token-insufficient-balance");
+        balanceOf[addr] = sub(balanceOf[addr], amount);
+        totalSupply = sub(totalSupply, amount);
+        emit Burn(addr, amount);
+    }
+
     function native_denom() public view returns (string memory) {
         return denom;
     }
@@ -25,16 +34,12 @@ contract ModuleCRC20 is DSToken  {
 
     function burn_by_cronos_module(address addr, uint amount) public {
         require(msg.sender == module_address);
-        // Deduct user's balance without approval
-        require(balanceOf[addr] >= amount, "ds-token-insufficient-balance");
-        balanceOf[addr] = sub(balanceOf[addr], amount);
-        totalSupply = sub(totalSupply, amount);
-        emit Burn(addr, amount);
+        unsafe_burn(addr, amount);
     }
 
     // send to ethereum through gravity bridge
-    function send_to_ethereum(address recipient, uint amount, uint bridge_fee) public {
-        burn(msg.sender, add(amount, bridge_fee));
+    function send_to_ethereum(address recipient, uint amount, uint bridge_fee) external {
+        unsafe_burn(msg.sender, add(amount, bridge_fee));
         emit __CronosSendToEthereum(recipient, amount, bridge_fee);
     }
 }
diff --git a/go.mod b/go.mod
index c699a52854..2ee463b024 100644
--- a/go.mod
+++ b/go.mod
@@ -5,9 +5,10 @@ go 1.16
 require (
 	github.com/armon/go-metrics v0.3.9
 	github.com/cosmos/cosmos-sdk v0.44.0
-	github.com/cosmos/ibc-go v1.0.1
+	github.com/cosmos/ibc-go v1.1.0
 	github.com/ethereum/go-ethereum v1.10.3
 	github.com/gogo/protobuf v1.3.3
+	github.com/golang/protobuf v1.5.2
 	github.com/gorilla/mux v1.8.0
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0
 	github.com/peggyjv/gravity-bridge/module v0.2.0
@@ -18,8 +19,8 @@ require (
 	github.com/tendermint/spm v0.0.0-20210524110815-6d7452d2dc4a
 	github.com/tendermint/tendermint v0.34.12
 	github.com/tendermint/tm-db v0.6.4
-	github.com/tharsis/ethermint v0.4.2-0.20210902174739-5fac39db38ed
-	google.golang.org/genproto v0.0.0-20210825212027-de86158e7fda
+	github.com/tharsis/ethermint v0.4.2-0.20210905110306-26c5eabb1893
+	google.golang.org/genproto v0.0.0-20210903162649-d08c68adba83
 	google.golang.org/grpc v1.40.0
 	gopkg.in/yaml.v2 v2.4.0
 )
@@ -33,3 +34,6 @@ replace github.com/99designs/keyring => github.com/crypto-org-chain/keyring v1.1
 
 // TODO: remove when middleware will be implemented
 replace github.com/cosmos/ibc-go => github.com/crypto-org-chain/ibc-go v1.0.1-hooks
+
+// FIXME: update after PR merged: https://github.com/PeggyJV/gravity-bridge/pull/182
+replace github.com/peggyjv/gravity-bridge/module => github.com/yihuang/gravity-bridge/module v0.1.22-0.20210908191543-71021d1bfff2
diff --git a/go.sum b/go.sum
index c28481c599..5e1f4ee4ad 100644
--- a/go.sum
+++ b/go.sum
@@ -67,6 +67,11 @@ github.com/DataDog/zstd v1.4.5/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t
 github.com/DataDog/zstd v1.4.8 h1:Rpmta4xZ/MgZnriKNd24iZMhGpP5dvUcs/uqfBapKZY=
 github.com/DataDog/zstd v1.4.8/go.mod h1:g4AWEaM3yOg3HYfnJ3YIawPnVdXJh9QME85blwSAmyw=
 github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
+github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
+github.com/Masterminds/semver v1.4.2/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
+github.com/Masterminds/semver v1.5.0/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
+github.com/Masterminds/sprig v2.15.0+incompatible/go.mod h1:y6hNFY5UBTIWBxnzTeuNhlNS5hqE0NB0E6fgfo2Br3o=
+github.com/Masterminds/sprig v2.22.0+incompatible/go.mod h1:y6hNFY5UBTIWBxnzTeuNhlNS5hqE0NB0E6fgfo2Br3o=
 github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
@@ -94,6 +99,8 @@ github.com/allegro/bigcache v1.2.1 h1:hg1sY1raCwic3Vnsvje6TT7/pnZba83LeFck5NrFKS
 github.com/allegro/bigcache v1.2.1/go.mod h1:Cb/ax3seSYIx7SuZdm2G2xzfwmv3TPSk2ucNfQESPXM=
 github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883/go.mod h1:rCTlJbsFo29Kk6CurOXKm700vrz8f0KW0JNfpkRJY/8=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
+github.com/aokoli/goutils v1.0.1/go.mod h1:SijmP0QR8LtwsmDs8Yii5Z/S4trXFGFC2oO5g9DP+DQ=
+github.com/aokoli/goutils v1.1.1/go.mod h1:SijmP0QR8LtwsmDs8Yii5Z/S4trXFGFC2oO5g9DP+DQ=
 github.com/apache/arrow/go/arrow v0.0.0-20191024131854-af6fa24be0db/go.mod h1:VTxUBvSJ3s3eHAg65PNgrsn5BtqCRPdmyXh6rAfdxN0=
 github.com/apache/thrift v0.12.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
 github.com/apache/thrift v0.13.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
@@ -158,9 +165,8 @@ github.com/casbin/casbin/v2 v2.1.2/go.mod h1:YcPU1XXisHhLzuxH9coDNf2FbKpjGlbCg3n
 github.com/cenkalti/backoff v2.2.1+incompatible/go.mod h1:90ReRw6GdpyfrHakVjL/QHaoyV4aDUVVkXQJJJ3NXXM=
 github.com/cenkalti/backoff/v4 v4.0.0/go.mod h1:eEew/i+1Q6OrCDZh3WiXYv3+nJwBASZ8Bog/87DQnVg=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
+github.com/cespare/cp v0.1.0 h1:SE+dxFebS7Iik5LK0tsi1k9ZCxEaFX4AjQmoyA+1dJk=
 github.com/cespare/cp v0.1.0/go.mod h1:SOGHArjBr4JWaSDEVpWpo/hNg6RoKrls6Oh40hiwW+s=
-github.com/cespare/cp v1.1.1 h1:nCb6ZLdB7NRaqsm91JtQTAme2SKJzXVsdPIPkyJr1MU=
-github.com/cespare/cp v1.1.1/go.mod h1:SOGHArjBr4JWaSDEVpWpo/hNg6RoKrls6Oh40hiwW+s=
 github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
@@ -225,24 +231,22 @@ github.com/crypto-org-chain/keyring v1.1.6-fixes/go.mod h1:0mkLWIoZuQ7uBoospo5Q9
 github.com/danieljoos/wincred v1.0.2 h1:zf4bhty2iLuwgjgpraD2E9UbvO+fe54XXGJbOwe23fU=
 github.com/danieljoos/wincred v1.0.2/go.mod h1:SnuYRW9lp1oJrZX/dXJqr0cPK5gYXqx3EJbmjhLdK9U=
 github.com/dave/jennifer v1.2.0/go.mod h1:fIb+770HOpJ2fmN9EPPKOqm1vMGhB+TwXKMZhrIygKg=
+github.com/davecgh/go-spew v0.0.0-20161028175848-04cdfd42973b/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v0.0.0-20171005155431-ecdeabc65495/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/deckarep/golang-set v0.0.0-20180603214616-504e848d77ea h1:j4317fAZh7X6GqbFowYdYdI0L9bwxL07jyPZIdepyZ0=
 github.com/deckarep/golang-set v0.0.0-20180603214616-504e848d77ea/go.mod h1:93vsz/8Wt4joVM7c2AVqh+YRMiUSc14yDtF28KmMOgQ=
-github.com/deckarep/golang-set v1.7.1 h1:SCQV0S6gTtp6itiFrTqI+pfmJ4LN85S1YzhDf9rTHJQ=
-github.com/deckarep/golang-set v1.7.1/go.mod h1:93vsz/8Wt4joVM7c2AVqh+YRMiUSc14yDtF28KmMOgQ=
 github.com/decred/dcrd/lru v1.0.0/go.mod h1:mxKOwFd7lFjN2GZYsiz/ecgqR6kkYAl+0pz0tEMk218=
 github.com/desertbit/timer v0.0.0-20180107155436-c41aec40b27f h1:U5y3Y5UE0w7amNe7Z5G/twsBW0KEalRQXZzf8ufSh9I=
 github.com/desertbit/timer v0.0.0-20180107155436-c41aec40b27f/go.mod h1:xH/i4TFMt8koVQZ6WFms69WAsDWr2XsYL3Hkl7jkoLE=
 github.com/dgraph-io/badger/v2 v2.2007.1/go.mod h1:26P/7fbL4kUZVEVKLAKXkBXKOydDmM2p1e+NhhnBCAE=
+github.com/dgraph-io/badger/v2 v2.2007.2 h1:EjjK0KqwaFMlPin1ajhP943VPENHJdEz1KLIegjaI3k=
 github.com/dgraph-io/badger/v2 v2.2007.2/go.mod h1:26P/7fbL4kUZVEVKLAKXkBXKOydDmM2p1e+NhhnBCAE=
-github.com/dgraph-io/badger/v2 v2.2007.3 h1:Sl9tQWz92WCbVSe8pj04Tkqlm2boW+KAxd+XSs58SQI=
-github.com/dgraph-io/badger/v2 v2.2007.3/go.mod h1:26P/7fbL4kUZVEVKLAKXkBXKOydDmM2p1e+NhhnBCAE=
 github.com/dgraph-io/ristretto v0.0.3-0.20200630154024-f66de99634de/go.mod h1:KPxhHT9ZxKefz+PCeOGsrHpl1qZ7i70dGTu2u+Ahh6E=
+github.com/dgraph-io/ristretto v0.0.3 h1:jh22xisGBjrEVnRZ1DVTpBVQm0Xndu8sMl0CWDzSIBI=
 github.com/dgraph-io/ristretto v0.0.3/go.mod h1:KPxhHT9ZxKefz+PCeOGsrHpl1qZ7i70dGTu2u+Ahh6E=
-github.com/dgraph-io/ristretto v0.1.0 h1:Jv3CGQHp9OjuMBSne1485aDpUkTKEcUqF+jm/LuerPI=
-github.com/dgraph-io/ristretto v0.1.0/go.mod h1:fux0lOrBhrVCJd3lcTHsIJhq1T2rokOu6v9Vcb3Q9ug=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/dgryski/go-bitstream v0.0.0-20180413035011-3522498ce2c8/go.mod h1:VMaSuZ+SZcx/wljOQKvp5srsbCiKDEb6K2wC4+PiBmQ=
 github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
@@ -271,6 +275,8 @@ github.com/enigmampc/btcutil v1.0.3-0.20200723161021-e2fb6adb2a25 h1:2vLKys4RBU4
 github.com/enigmampc/btcutil v1.0.3-0.20200723161021-e2fb6adb2a25/go.mod h1:hTr8+TLQmkUkgcuh3mcr5fjrT9c64ZzsBCdCEC6UppY=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
+github.com/envoyproxy/protoc-gen-validate v0.3.0-java/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
+github.com/envoyproxy/protoc-gen-validate v0.6.1/go.mod h1:txg5va2Qkip90uYoSKH+nkAAmXrb2j3iq4FLwdrCbXQ=
 github.com/ethereum/go-ethereum v1.9.25/go.mod h1:vMkFiYLHI4tgPw4k2j4MHKoovchFE8plZ0M9VMk4/oM=
 github.com/ethereum/go-ethereum v1.10.1/go.mod h1:E5e/zvdfUVr91JZ0AwjyuJM3x+no51zZJRz61orLLSk=
 github.com/ethereum/go-ethereum v1.10.3 h1:SEYOYARvbWnoDl1hOSks3ZJQpRiiRJe8ubaQGJQwq0s=
@@ -352,8 +358,6 @@ github.com/gogo/gateway v1.1.0/go.mod h1:S7rR8FRQyG3QFESeSv4l2WnsyzlCLG0CzBbUUo/
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0/go.mod h1:E/TSTwGwJL78qG/PmXZO1EjYhfJinVAhrmmHX6Z8B9k=
 github.com/golang/geo v0.0.0-20190916061304-5b978397cfec/go.mod h1:QZ0nwyI2jOfgRAoBvP+ab5aRr7c9x7lhGEJrKvBwjWI=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/glog v0.0.0-20210429001901-424d2337a529 h1:2voWjNECnrZRbfwXxHB1/j8wa6xdKn85B5NzgVL/pTU=
-github.com/golang/glog v0.0.0-20210429001901-424d2337a529/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20160516000752-02826c3e7903/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
@@ -391,9 +395,8 @@ github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8l
 github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/golang/snappy v0.0.2/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/golang/snappy v0.0.3-0.20201103224600-674baa8c7fc3/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
+github.com/golang/snappy v0.0.3 h1:fHPg5GQYlCeLIPB9BZqMVR5nR9A+IM5zcgeTdjMYmLA=
 github.com/golang/snappy v0.0.3/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
-github.com/golang/snappy v0.0.4 h1:yAGX7huGHXlcLOEtBnF4w7FQwA26wojNCwOYAEhLjQM=
-github.com/golang/snappy v0.0.4/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/btree v1.0.1 h1:gK4Kx5IaGY9CD5sPJ36FHiBJ6ZXl0kilRiiCj+jdYp4=
@@ -409,9 +412,8 @@ github.com/google/go-cmp v0.5.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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@@ -434,6 +436,7 @@ github.com/google/pprof v0.0.0-20210122040257-d980be63207e/go.mod h1:kpwsk12EmLe
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@@ -489,9 +492,8 @@ github.com/hashicorp/consul/sdk v0.3.0/go.mod h1:VKf9jXwCTEY1QZP2MOLRhb5i/I/ssyN
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 github.com/spf13/cast v1.3.0/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
@@ -918,6 +931,7 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.2.0 h1:Hbg2NidpLE8veEBkEZTL3CvlkUIVzuU9jDplZO54c48=
 github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=
+github.com/stretchr/testify v0.0.0-20170130113145-4d4bfba8f1d1/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.2.0/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
@@ -954,8 +968,8 @@ github.com/tendermint/tm-db v0.6.2/go.mod h1:GYtQ67SUvATOcoY8/+x6ylk8Qo02BQyLrAs
 github.com/tendermint/tm-db v0.6.3/go.mod h1:lfA1dL9/Y/Y8wwyPp2NMLyn5P5Ptr/gvDFNWtrCWSf8=
 github.com/tendermint/tm-db v0.6.4 h1:3N2jlnYQkXNQclQwd/eKV/NzlqPlfK21cpRRIx80XXQ=
 github.com/tendermint/tm-db v0.6.4/go.mod h1:dptYhIpJ2M5kUuenLr+Yyf3zQOv1SgBZcl8/BmWlMBw=
-github.com/tharsis/ethermint v0.4.2-0.20210902174739-5fac39db38ed h1:tJoRSbvnKkueMUuFOgfGK7svOjvnkqNP5STRgsTF8As=
-github.com/tharsis/ethermint v0.4.2-0.20210902174739-5fac39db38ed/go.mod h1:Vvn8Ml0LJ3NsDGLnxzwHp9lnrr6j3r2DHutR10iDyME=
+github.com/tharsis/ethermint v0.4.2-0.20210905110306-26c5eabb1893 h1:qdqNQu1o5CsoKAPFt2obcXNweWk0NLoKnVXHl4Fe16c=
+github.com/tharsis/ethermint v0.4.2-0.20210905110306-26c5eabb1893/go.mod h1:zOdTIdI2jrKoVthxJ73yflOxh8xz0bsiBFV91IIlFMQ=
 github.com/tidwall/gjson v1.6.7/go.mod h1:zeFuBCIqD4sN/gmqBzZ4j7Jd6UcA2Fc56x7QFsv+8fI=
 github.com/tidwall/match v1.0.3/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JTxsfmM=
 github.com/tidwall/pretty v1.0.2/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhVysOjyk=
@@ -994,6 +1008,8 @@ github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:
 github.com/xtaci/kcp-go v5.4.20+incompatible/go.mod h1:bN6vIwHQbfHaHtFpEssmWsN45a+AZwO7eyRCmEIbtvE=
 github.com/xtaci/lossyconn v0.0.0-20190602105132-8df528c0c9ae/go.mod h1:gXtu8J62kEgmN++bm9BVICuT/e8yiLI2KFobd/TRFsE=
 github.com/ybbus/jsonrpc v2.1.2+incompatible/go.mod h1:XJrh1eMSzdIYFbM08flv0wp5G35eRniyeGut1z+LSiE=
+github.com/yihuang/gravity-bridge/module v0.1.22-0.20210908191543-71021d1bfff2 h1:kkRZ8fh+bfreRmPDPgtUuCc9yZMcIa9lNs9molc2jfo=
+github.com/yihuang/gravity-bridge/module v0.1.22-0.20210908191543-71021d1bfff2/go.mod h1:gixjqIjdEb0CC0Kp4bLaJRoFSMG+irz3qU6gWwmNHik=
 github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
@@ -1032,6 +1048,7 @@ go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
 go.uber.org/zap v1.13.0/go.mod h1:zwrFLgMcdUuIBviXEYEH1YKNaOBnKXsx2IPda5bBwHM=
 go.uber.org/zap v1.17.0/go.mod h1:MXVU+bhUf/A7Xi2HNOnopQOrmycQ5Ih87HtOu4q5SSo=
 golang.org/x/crypto v0.0.0-20170930174604-9419663f5a44/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
+golang.org/x/crypto v0.0.0-20180501155221-613d6eafa307/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20181029021203-45a5f77698d3/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
@@ -1173,6 +1190,7 @@ golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20190412183630-56d357773e84/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -1185,7 +1203,6 @@ golang.org/x/sys v0.0.0-20180810173357-98c5dad5d1a0/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20180926160741-c2ed4eda69e7/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181026203630-95b1ffbd15a5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -1386,6 +1403,7 @@ google.golang.org/appengine v1.6.6/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCID
 google.golang.org/appengine v1.6.7/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
+google.golang.org/genproto v0.0.0-20181107211654-5fc9ac540362/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190418145605-e7d98fc518a7/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
@@ -1434,8 +1452,8 @@ google.golang.org/genproto v0.0.0-20210310155132-4ce2db91004e/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20210319143718-93e7006c17a6/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210402141018-6c239bbf2bb1/go.mod h1:9lPAdzaEmUacj36I+k7YKbEc5CXzPIeORRgDAUOu28A=
 google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c/go.mod h1:UODoCrxHCcBojKKwX1terBiRUaqAsFqJiF615XL43r0=
-google.golang.org/genproto v0.0.0-20210825212027-de86158e7fda h1:iT5uhT54PtbqUsWddv/nnEWdE5e/MTr+Nv3vjxlBP1A=
-google.golang.org/genproto v0.0.0-20210825212027-de86158e7fda/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY=
+google.golang.org/genproto v0.0.0-20210903162649-d08c68adba83 h1:3V2dxSZpz4zozWWUq36vUxXEKnSYitEH2LdsAx+RUmg=
+google.golang.org/genproto v0.0.0-20210903162649-d08c68adba83/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY=
 google.golang.org/grpc v1.33.2 h1:EQyQC3sa8M+p6Ulc8yy9SWSS2GVwyRc83gAbG8lrl4o=
 google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc=
 google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.0.1/go.mod h1:6Kw0yEErY5E/yWrBtf03jp27GLLJujG4z/JK95pnjjw=
@@ -1479,6 +1497,7 @@ gopkg.in/jcmturner/gokrb5.v7 v7.2.3/go.mod h1:l8VISx+WGYp+Fp7KRbsiUuXTTOnxIc3Tuv
 gopkg.in/jcmturner/rpc.v1 v1.1.0/go.mod h1:YIdkC4XfD6GXbzje11McwsDuOlZQSb9W4vfLvuNnlv8=
 gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce h1:+JknDZhAj8YMt7GC73Ei8pv4MzjDUNPHgQWJdtMAaDU=
 gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce/go.mod h1:5AcXVHNjg+BDxry382+8OKon8SEWiKktQR07RKPsv1c=
+gopkg.in/olebedev/go-duktape.v3 v3.0.0-20200619000410-60c24ae608a6 h1:a6cXbcDDUkSBlpnkWV1bJ+vv3mOgQEltEJ2rPxroVu0=
 gopkg.in/olebedev/go-duktape.v3 v3.0.0-20200619000410-60c24ae608a6/go.mod h1:uAJfkITjFhyEEuUfm7bsmCZRbW5WRq8s9EY8HZ6hCns=
 gopkg.in/redis.v4 v4.2.4/go.mod h1:8KREHdypkCEojGKQcjMqAODMICIVwZAONWq8RowTITA=
 gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
@@ -1509,9 +1528,8 @@ honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt
 honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 honnef.co/go/tools v0.1.3/go.mod h1:NgwopIslSNH47DimFoV78dnkksY2EFtX0ajyb3K/las=
+nhooyr.io/websocket v1.8.6 h1:s+C3xAMLwGmlI31Nyn/eAehUlZPwfYZu2JXM621Q5/k=
 nhooyr.io/websocket v1.8.6/go.mod h1:B70DZP8IakI65RVQ51MsWP/8jndNma26DVA/nFSCgW0=
-nhooyr.io/websocket v1.8.7 h1:usjR2uOr/zjjkVMy0lW+PPohFok7PCow5sDjLgX4P4g=
-nhooyr.io/websocket v1.8.7/go.mod h1:B70DZP8IakI65RVQ51MsWP/8jndNma26DVA/nFSCgW0=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
diff --git a/gomod2nix.toml b/gomod2nix.toml
index 595136e33d..3ef4ee6d75 100644
--- a/gomod2nix.toml
+++ b/gomod2nix.toml
@@ -219,6 +219,30 @@
     rev = "9aa49832a739dcd78a5542ff189fb82c3e423116"
     sha256 = "12klijhq4fckzbhv0cwygbazj6lvhmdqksha9y6jgfmwzv51kwv5"
 
+["github.com/Masterminds/goutils"]
+  sumVersion = "v1.1.1"
+  ["github.com/Masterminds/goutils".fetch]
+    type = "git"
+    url = "https://github.com/Masterminds/goutils"
+    rev = "f1923532a168b8203bfe956d8cd3b17ebece5982"
+    sha256 = "09m4mbcdlv9ng3xcrmjlxi0niavby52y9nl2jhjnbx1xxpjw0jrh"
+
+["github.com/Masterminds/semver"]
+  sumVersion = "v1.5.0"
+  ["github.com/Masterminds/semver".fetch]
+    type = "git"
+    url = "https://github.com/Masterminds/semver"
+    rev = "805c489aa98f412e79eb308a37996bf9d8b1c91e"
+    sha256 = "1i169xscsxsh8lsw8bz2apnsqixld37xdnfh36i30xy5wnf0iwfx"
+
+["github.com/Masterminds/sprig"]
+  sumVersion = "v2.22.0+incompatible"
+  ["github.com/Masterminds/sprig".fetch]
+    type = "git"
+    url = "https://github.com/Masterminds/sprig"
+    rev = "e4c0945838d570720d876a6ad9b4568ed32317b4"
+    sha256 = "09dzwhj4zh3p6f1jhyic16n4qdnvpamz7hyk9fycpm4b1jfq63gd"
+
 ["github.com/OneOfOne/xxhash"]
   sumVersion = "v1.2.2"
   ["github.com/OneOfOne/xxhash".fetch]
@@ -347,6 +371,14 @@
     rev = "c3f0ba9c1a592b971d66b2787679af55b5c58f21"
     sha256 = "1ix08vl49qxr58rc6201cl97g1yznhhkwvqldslawind99js4rj0"
 
+["github.com/aokoli/goutils"]
+  sumVersion = "v1.1.1"
+  ["github.com/aokoli/goutils".fetch]
+    type = "git"
+    url = "https://github.com/aokoli/goutils"
+    rev = "f1923532a168b8203bfe956d8cd3b17ebece5982"
+    sha256 = "09m4mbcdlv9ng3xcrmjlxi0niavby52y9nl2jhjnbx1xxpjw0jrh"
+
 ["github.com/apache/arrow/go/arrow"]
   sumVersion = "v0.0.0-20191024131854-af6fa24be0db"
   relPath = "go/arrow"
@@ -676,12 +708,12 @@
     sha256 = "19fcx3sc99i5dsklny6r073z5j20vlwn2xqm6di1q3b1xwchzqfj"
 
 ["github.com/cespare/cp"]
-  sumVersion = "v1.1.1"
+  sumVersion = "v0.1.0"
   ["github.com/cespare/cp".fetch]
     type = "git"
     url = "https://github.com/cespare/cp"
-    rev = "db1407d84ae423533fe1d25510c1c4c4d831f0fc"
-    sha256 = "0gdsd4kndi4qzbxg4zr0zs46ab8fisgazim2jiacglcnxhhifki7"
+    rev = "165db2f241fd235aec29ba6d9b1ccd5f1c14637c"
+    sha256 = "1x76x985q9av29smybpc3g4az2qjmzqw181vp9z38wpbips31nm9"
 
 ["github.com/cespare/xxhash"]
   sumVersion = "v1.1.0"
@@ -983,12 +1015,12 @@
     sha256 = "0hka6hmyvp701adzag2g26cxdj47g21x6jz4sc6jjz1mn59d474y"
 
 ["github.com/deckarep/golang-set"]
-  sumVersion = "v1.7.1"
+  sumVersion = "v0.0.0-20180603214616-504e848d77ea"
   ["github.com/deckarep/golang-set".fetch]
     type = "git"
     url = "https://github.com/deckarep/golang-set"
-    rev = "cbaa98ba5575e67703b32b4b19f73c91f3c4159e"
-    sha256 = "0y64c0p6a7ww5jp6adm6fm97vsni86njw8wkwxfmciy466vhl0lf"
+    rev = "504e848d77ea4752b3057b8fb46da0e7f746ccf3"
+    sha256 = "0n0dgz82vvwpxh2fp3d9ciawzrwv0w3hsnkk4y7z64pxp27r4k7n"
 
 ["github.com/decred/dcrd/lru"]
   sumVersion = "v1.0.0"
@@ -1008,20 +1040,20 @@
     sha256 = "1jsy04ga79xbdfn0xqzs7q8gyh2sz9jpfqdsb210m6188yscxck9"
 
 ["github.com/dgraph-io/badger/v2"]
-  sumVersion = "v2.2007.3"
+  sumVersion = "v2.2007.2"
   ["github.com/dgraph-io/badger/v2".fetch]
     type = "git"
     url = "https://github.com/dgraph-io/badger"
-    rev = "166e07594bd30ef24518399095331147375f57e3"
-    sha256 = "0ng56plsk55krv7n03bjnnsmrf7r5npw4binr2p2p3ijyvi723g4"
+    rev = "d5a25b83fbf4f3f61ff03a9202e36f5b75544426"
+    sha256 = "0cck8ap61bi56dv070cirkkl6fjavz05kwyxjv08lbfykhlpz3da"
 
 ["github.com/dgraph-io/ristretto"]
-  sumVersion = "v0.1.0"
+  sumVersion = "v0.0.3"
   ["github.com/dgraph-io/ristretto".fetch]
     type = "git"
     url = "https://github.com/dgraph-io/ristretto"
-    rev = "1ff978f89ae61dfad7460f12355a5f3ee1e6af13"
-    sha256 = "0lj1dwfqmk0f83c5jc17xdf3c919b8kgljchjv0l33jvjgxascav"
+    rev = "bcb54d096f2303ce80960e125b5991ac4d6325c3"
+    sha256 = "1v29j6b0r87pf5dwsxi3rxa8yavkl3h79i63rbddfd42p2jyssyg"
 
 ["github.com/dgrijalva/jwt-go"]
   sumVersion = "v3.2.0+incompatible"
@@ -1168,12 +1200,12 @@
     sha256 = "0m0crzx70lp7vz13v20wxb1fcfdnzp7h3mkh3bn6a8mbfz6w5asj"
 
 ["github.com/envoyproxy/protoc-gen-validate"]
-  sumVersion = "v0.1.0"
+  sumVersion = "v0.6.1"
   ["github.com/envoyproxy/protoc-gen-validate".fetch]
     type = "git"
     url = "https://github.com/envoyproxy/protoc-gen-validate"
-    rev = "9eff07ddfcb4001aa1aab280648153f46e1a8ddc"
-    sha256 = "0kxd3wwh3xwqk0r684hsy281xq4y71cd11d4q2hspcjbnlbwh7cy"
+    rev = "758c5fc3a13b71bdb7e851b0c1ee8f6232e0ce7d"
+    sha256 = "15x8klgwl98kh81la8j007jfcsx9jxmxrrmys3a7p92pf0k5vzrx"
 
 ["github.com/ethereum/go-ethereum"]
   sumVersion = "v1.10.3"
@@ -1522,12 +1554,12 @@
     sha256 = "1l09fl449css9bw045c7a35rp5jxgfpbisyn1rb9r4ign7956wi3"
 
 ["github.com/golang/glog"]
-  sumVersion = "v0.0.0-20210429001901-424d2337a529"
+  sumVersion = "v0.0.0-20160126235308-23def4e6c14b"
   ["github.com/golang/glog".fetch]
     type = "git"
     url = "https://github.com/golang/glog"
-    rev = "424d2337a5299a465c8a8228fc3ba4b1c28337a2"
-    sha256 = "1hnbln6h61ik9z92dspybmb0cxpddm1c4dzx5g64jr8cdvqcgpji"
+    rev = "23def4e6c14b4da8ac2ed8007337bc5eb5007998"
+    sha256 = "0jb2834rw5sykfr937fxi8hxi2zy80sj2bdn9b3jb4b26ksqng30"
 
 ["github.com/golang/groupcache"]
   sumVersion = "v0.0.0-20200121045136-8c9f03a8e57e"
@@ -1554,12 +1586,12 @@
     sha256 = "1mh5fyim42dn821nsd3afnmgscrzzhn3h8rag635d2jnr23r1zhk"
 
 ["github.com/golang/snappy"]
-  sumVersion = "v0.0.4"
+  sumVersion = "v0.0.3"
   ["github.com/golang/snappy".fetch]
     type = "git"
     url = "https://github.com/golang/snappy"
-    rev = "544b4180ac705b7605231d4a4550a1acb22a19fe"
-    sha256 = "004cw699yz3pdpawhjhpa0y94c4w479nw1rf39zj6h6027kpwv2j"
+    rev = "674baa8c7fc30da5df3074a459494a7e6b427dff"
+    sha256 = "1dc8sdca0nrqb8wri91mi2xcjm16wyawm4y0fwc5gp24ahjbrg7g"
 
 ["github.com/google/btree"]
   sumVersion = "v1.0.1"
@@ -1578,12 +1610,12 @@
     sha256 = "1gl8pnykzifh7pnnvl80f5prmj5ga60dp44inpv9az2k9zaqx3qr"
 
 ["github.com/google/go-cmp"]
-  sumVersion = "v0.5.6"
+  sumVersion = "v0.5.5"
   ["github.com/google/go-cmp".fetch]
     type = "git"
     url = "https://github.com/google/go-cmp"
-    rev = "d103655696d8ae43c4125ee61454dbf03d8e8324"
-    sha256 = "0lrb0pacv5iy3m6fn1qb3nv7zwimfhpzqq8f6hwpwx88cx3g6p1s"
+    rev = "8fa37b4dd109f12e42b131e485268768f18bcbf8"
+    sha256 = "12fmkdhyv5d4is8s57k78j097zb0phlgnrkqc03agiszxlid69x7"
 
 ["github.com/google/gofuzz"]
   sumVersion = "v1.1.1-0.20200604201612-c04b05f3adfa"
@@ -1813,12 +1845,12 @@
     sha256 = "07kx3fhryqmaw3czacmm11qwx63js2q8cfq967vphk7xg9q377kk"
 
 ["github.com/hashicorp/go-immutable-radix"]
-  sumVersion = "v1.3.0"
+  sumVersion = "v1.0.0"
   ["github.com/hashicorp/go-immutable-radix".fetch]
     type = "git"
     url = "https://github.com/hashicorp/go-immutable-radix"
-    rev = "57230d80bd59689cded197c5065835b39d890dd0"
-    sha256 = "0wnnh4q4398ib3h0440dq82x8y89hy3214qdzc2jbbxg95cic0cr"
+    rev = "27df80928bb34bb1b0d6d0e01b9e679902e7a6b5"
+    sha256 = "1v3nmsnk1s8bzpclrhirz7iq0g5xxbw9q5gvrg9ss6w9crs72qr6"
 
 ["github.com/hashicorp/go-msgpack"]
   sumVersion = "v0.5.3"
@@ -1973,6 +2005,14 @@
     rev = "a30252cb686a21eb2d0b98132633053ec2f7f1e5"
     sha256 = "1njpzc0pi1acg5zx9y6vj9xi6ksbsc5d387rd6904hy6rh2m6kn0"
 
+["github.com/huandu/xstrings"]
+  sumVersion = "v1.3.2"
+  ["github.com/huandu/xstrings".fetch]
+    type = "git"
+    url = "https://github.com/huandu/xstrings"
+    rev = "52197b1fb3155666d9613b4eb4ed72a86d1f8ab6"
+    sha256 = "0pwar6rc0fqb6pll38a44s81g5kb65vbg71jg5lx8caphjnikq5r"
+
 ["github.com/hudl/fargo"]
   sumVersion = "v1.3.0"
   ["github.com/hudl/fargo".fetch]
@@ -1997,6 +2037,14 @@
     rev = "1ca381bf315033e89af3286fdec0109ce8d86126"
     sha256 = "0alhyacsfqic2wxyqn4gvk9wzjl4pkmy8rhvqjk84xsghgx5xf12"
 
+["github.com/iancoleman/strcase"]
+  sumVersion = "v0.0.0-20180726023541-3605ed457bf7"
+  ["github.com/iancoleman/strcase".fetch]
+    type = "git"
+    url = "https://github.com/iancoleman/strcase"
+    rev = "3605ed457bf7f8caa1371b4fafadadc026673479"
+    sha256 = "0sgxd4ir03kc4k5sk5hc1wmir3m8j20dfwajqwiljgqsz6xkg0j5"
+
 ["github.com/ianlancetaylor/demangle"]
   sumVersion = "v0.0.0-20200824232613-28f6c0f3b639"
   ["github.com/ianlancetaylor/demangle".fetch]
@@ -2005,6 +2053,14 @@
     rev = "28f6c0f3b63983aaa99575ca3b693afff7996387"
     sha256 = "0rsq3622gd40f1x1l7caidsxrmzg1993ich2higwd94fqbxs1r83"
 
+["github.com/imdario/mergo"]
+  sumVersion = "v0.3.12"
+  ["github.com/imdario/mergo".fetch]
+    type = "git"
+    url = "https://github.com/imdario/mergo"
+    rev = "29fb3d3bdc5512887f1dc9aedde6a0fed407fa8f"
+    sha256 = "15s6807vcm7xq4l6my7rnw1i7x57712jvdidjli5bip79jfaxw90"
+
 ["github.com/improbable-eng/grpc-web"]
   sumVersion = "v0.14.1"
   ["github.com/improbable-eng/grpc-web".fetch]
@@ -2492,6 +2548,14 @@
     rev = "cdb49ff09d77331d3fdd51e862b4023d2257954c"
     sha256 = "1cby9n647v4gh11mpz1dfscks8n0cw0rj8d2hjh4q9mky4m7jzl1"
 
+["github.com/lyft/protoc-gen-star"]
+  sumVersion = "v0.5.1"
+  ["github.com/lyft/protoc-gen-star".fetch]
+    type = "git"
+    url = "https://github.com/lyft/protoc-gen-star"
+    rev = "2fb4b6301f76389e5887ac3c3c12588c79aedfa2"
+    sha256 = "1nv00hjjlrzn8g27m68bbjw6rsgddn36bbcdk48zfmv98wpcnxwg"
+
 ["github.com/magiconair/properties"]
   sumVersion = "v1.8.5"
   ["github.com/magiconair/properties".fetch]
@@ -2596,6 +2660,14 @@
     rev = "3d22a244be8aa6fb16ac24af0e195c08b7d973aa"
     sha256 = "1i9kmr7rcf10d2hji8h4247hmc0nbairv7a0q51393aw2h1bnwg2"
 
+["github.com/mitchellh/copystructure"]
+  sumVersion = "v1.2.0"
+  ["github.com/mitchellh/copystructure".fetch]
+    type = "git"
+    url = "https://github.com/mitchellh/copystructure"
+    rev = "d4ce1f938f7a7ea2a40bff4544b56be9c00b5e84"
+    sha256 = "1izw243b3r03nvgnnxvk706l3s3v3q7k69kq3n4asnzjkcymq7sm"
+
 ["github.com/mitchellh/go-homedir"]
   sumVersion = "v1.1.0"
   ["github.com/mitchellh/go-homedir".fetch]
@@ -2636,6 +2708,14 @@
     rev = "8ebf2d61a8b4adcce25fc9fc9b76e8452a00672f"
     sha256 = "1m98wiadb6kdnzv21m8p7nk1jb30zpjh47fkb1dg251r3m7bj47v"
 
+["github.com/mitchellh/reflectwalk"]
+  sumVersion = "v1.0.2"
+  ["github.com/mitchellh/reflectwalk".fetch]
+    type = "git"
+    url = "https://github.com/mitchellh/reflectwalk"
+    rev = "e0c24fdb021963cd2c4013097a0b993a7c4e344f"
+    sha256 = "1nxgb4gskzv045539vb312n0a443308dvh1akz7vi6x1l0z46zsm"
+
 ["github.com/modern-go/concurrent"]
   sumVersion = "v0.0.0-20180306012644-bacd9c7ef1dd"
   ["github.com/modern-go/concurrent".fetch]
@@ -2676,6 +2756,14 @@
     rev = "2f068394615f73e460c2f3d2c158b0ad9321cadb"
     sha256 = "0ymjmy12ks7smgwmrwsa5kf07d9w5kpk1dn650azlzr61b561aw7"
 
+["github.com/mwitkow/go-proto-validators"]
+  sumVersion = "v0.3.2"
+  ["github.com/mwitkow/go-proto-validators".fetch]
+    type = "git"
+    url = "https://github.com/mwitkow/go-proto-validators"
+    rev = "32a686adf8b5194d3ea07d632d49b6fb344af678"
+    sha256 = "0flr9964jz4bgzhjpcc54niiy6zg1skf8f8x7bcp2qvbwshxwb44"
+
 ["github.com/mwitkow/grpc-proxy"]
   sumVersion = "v0.0.0-20181017164139-0f1106ef9c76"
   ["github.com/mwitkow/grpc-proxy".fetch]
@@ -2965,13 +3053,13 @@
     sha256 = "0f146yjqwx2mr110kl8scjhqd08hys7vr5z0d0a3lskb6yy22gfg"
 
 ["github.com/peggyjv/gravity-bridge/module"]
-  sumVersion = "v0.2.0"
+  sumVersion = "v0.1.22-0.20210908191543-71021d1bfff2"
   relPath = "module"
   ["github.com/peggyjv/gravity-bridge/module".fetch]
     type = "git"
-    url = "https://github.com/peggyjv/gravity-bridge"
-    rev = "8af32db2883af08acd35bd76703eac39ab283eaa"
-    sha256 = "1rk5xca5zvk3srxsfa8482hbimf1mcdl5dksf2b5vgrmim4v3vn8"
+    url = "https://github.com/yihuang/gravity-bridge"
+    rev = "71021d1bfff20c01c6c763b5d373b295c41cd247"
+    sha256 = "0ffyx0dfk9yhhvszhhg5ppz4hp463933v9lmqyz16s5sca7qq1dh"
 
 ["github.com/pelletier/go-toml"]
   sumVersion = "v1.9.3"
@@ -3102,12 +3190,28 @@
     sha256 = "0czzw37dq0sfq7rivxmxxw5hy287grqnng6q6hfz6mkqmhqgm1m6"
 
 ["github.com/prometheus/tsdb"]
-  sumVersion = "v0.10.0"
+  sumVersion = "v0.7.1"
   ["github.com/prometheus/tsdb".fetch]
     type = "git"
     url = "https://github.com/prometheus/tsdb"
-    rev = "7762249358193da791ec62e72b080d908f96e776"
-    sha256 = "1wkx1nj2z9s3wxc5w4m9a319nnqr92bmflzwf7kppx0pivajy474"
+    rev = "c20450564cc42983bf923c13f3fda42de709ac13"
+    sha256 = "1c1da8i5byvhh4fp3vqjfb65aaksjskn3ggb8wg9hcfzjrhgpz04"
+
+["github.com/pseudomuto/protoc-gen-doc"]
+  sumVersion = "v1.5.0"
+  ["github.com/pseudomuto/protoc-gen-doc".fetch]
+    type = "git"
+    url = "https://github.com/pseudomuto/protoc-gen-doc"
+    rev = "27bd2775ea68088ac52ebc847c7860e4889b981d"
+    sha256 = "1bpb5wv76p0sjffh5d1frbygp3q1p07sdh5c8pznl5bdh5pd7zxq"
+
+["github.com/pseudomuto/protokit"]
+  sumVersion = "v0.2.0"
+  ["github.com/pseudomuto/protokit".fetch]
+    type = "git"
+    url = "https://github.com/pseudomuto/protokit"
+    rev = "c63c13958542d70af1d1ef7826d30b25cd5bf6e9"
+    sha256 = "14l1y989136xmbp5vigr41r594hh9h1nfx8bl5gkjrk585akrmmr"
 
 ["github.com/rakyll/statik"]
   sumVersion = "v0.1.7"
@@ -3142,12 +3246,12 @@
     sha256 = "1dyyjyrscd3d22jhh2pbn67c6nzva0v069215sjjmj313k1xzmj3"
 
 ["github.com/rjeczalik/notify"]
-  sumVersion = "v0.9.2"
+  sumVersion = "v0.9.1"
   ["github.com/rjeczalik/notify".fetch]
     type = "git"
     url = "https://github.com/rjeczalik/notify"
-    rev = "69d839f37b13a8cb7a78366f7633a4071cb43be7"
-    sha256 = "0pq191pvd4icp84sg0513pf5v7xm4nmldaagjd4p8ws75l656grw"
+    rev = "0f065fa99b48b842c3fd3e2c8b194c6f2b69f6b8"
+    sha256 = "15zzgyry10hvg0z2d3fm1yncbscln9mmvgsm29w67yncf6n8vcb0"
 
 ["github.com/rogpeppe/fastuuid"]
   sumVersion = "v1.2.0"
@@ -3542,12 +3646,12 @@
     sha256 = "1sgjf2vaq554ybc0cwkzn17cz2ibzph2rq0dgaw21c2hym09437x"
 
 ["github.com/tharsis/ethermint"]
-  sumVersion = "v0.4.2-0.20210902174739-5fac39db38ed"
+  sumVersion = "v0.4.2-0.20210905110306-26c5eabb1893"
   ["github.com/tharsis/ethermint".fetch]
     type = "git"
     url = "https://github.com/tharsis/ethermint"
-    rev = "5fac39db38ed302af421e56f321b979200332287"
-    sha256 = "1l64nimbmfxv06qn3b3356maan8npn0hlnqxd1iv4sqdganvkbra"
+    rev = "26c5eabb1893831385480a3740dbe22664aae7c0"
+    sha256 = "08zm6xc6yjzxgfqn0jqbl5mi1gpws0mlsn4w3dlywn8y2fc6qpj0"
 
 ["github.com/tidwall/gjson"]
   sumVersion = "v1.6.7"
@@ -4026,12 +4130,12 @@
     sha256 = "1wkipg7xxc0ha5p6c3bj0vpgq38l18441n5l6zxdhx0gzvz5z1hs"
 
 ["google.golang.org/genproto"]
-  sumVersion = "v0.0.0-20210825212027-de86158e7fda"
+  sumVersion = "v0.0.0-20210903162649-d08c68adba83"
   ["google.golang.org/genproto".fetch]
     type = "git"
     url = "https://github.com/googleapis/go-genproto"
-    rev = "de86158e7fdad51c5f1d1c32c67bb08b580aad80"
-    sha256 = "0fbxkiam9i8yqgfdsfd8bl57v0qwj7sj6r6jm99r0jc9bmq776rf"
+    rev = "d08c68adba83a8e9f757762b810b6a963df394c4"
+    sha256 = "1yj03lyr119mw4qldz8kg610k2vkdsaln3mjbjm2xjvgar1yyw1d"
 
 ["google.golang.org/grpc"]
   sumVersion = "v1.33.2"
@@ -4267,12 +4371,12 @@
     sha256 = "17li8jbw3cpn59kpcl3j3r2an4wkx3fc81xn0j4xgbjpkxh9493n"
 
 ["nhooyr.io/websocket"]
-  sumVersion = "v1.8.7"
+  sumVersion = "v1.8.6"
   ["nhooyr.io/websocket".fetch]
     type = "git"
     url = "https://github.com/nhooyr/websocket"
-    rev = "3604edcb857415cb2c1213d63328cdcd738f2328"
-    sha256 = "11bz96vh0nkw6f8kczzcs07ixdhjy8s7bl398j0cf1hh40zxvass"
+    rev = "02861b474d9c29660eff53a3c424d589aaf46d1e"
+    sha256 = "1xw7rhy9bvk0kzqvpcvj92l9zwwnakvqwycfxm724dw7m0d84n52"
 
 ["rsc.io/binaryregexp"]
   sumVersion = "v0.2.0"
diff --git a/integration_tests/conftest.py b/integration_tests/conftest.py
index 4c3a1bb430..9ffb4a0974 100644
--- a/integration_tests/conftest.py
+++ b/integration_tests/conftest.py
@@ -1,6 +1,3 @@
-import re
-from pathlib import Path
-
 import pytest
 
 from .network import setup_cronos, setup_geth
@@ -11,22 +8,6 @@ def pytest_configure(config):
     config.addinivalue_line("markers", "gravity: gravity bridge test cases")
 
 
-def pytest_addoption(parser):
-    parser.addoption(
-        "--supervisord-quiet",
-        dest="supervisord-quiet",
-        action="store_true",
-        default=False,
-        help="redirect supervisord's stdout to file",
-    )
-
-
-@pytest.fixture(scope="session")
-def worker_index(worker_id):
-    match = re.search(r"\d+", worker_id)
-    return int(match[0]) if match is not None else 0
-
-
 @pytest.fixture(scope="session")
 def suspend_capture(pytestconfig):
     """
diff --git a/integration_tests/cosmoscli.py b/integration_tests/cosmoscli.py
index 645f5cb82a..d503003332 100644
--- a/integration_tests/cosmoscli.py
+++ b/integration_tests/cosmoscli.py
@@ -949,3 +949,15 @@ def send_to_ethereum(self, from_, receiver, coins, fee):
                 home=self.data_dir,
             )
         )
+
+    def query_contract_by_denom(self, denom: str):
+        "query contract by denom"
+        return json.loads(
+            self.raw(
+                "query",
+                "cronos",
+                "contract-by-denom",
+                denom,
+                home=self.data_dir,
+            )
+        )
diff --git a/integration_tests/shell.nix b/integration_tests/shell.nix
index bd479491b3..bd90fdff1f 100644
--- a/integration_tests/shell.nix
+++ b/integration_tests/shell.nix
@@ -3,7 +3,7 @@ pkgs.mkShell {
   buildInputs = [
     pkgs.jq
     pkgs.go
-    (import ../. { inherit pkgs; })
+    (import ../. { inherit pkgs; }) # cronosd
     pkgs.start-scripts
     pkgs.go-ethereum
     pkgs.pystarport
diff --git a/integration_tests/test_gravity.py b/integration_tests/test_gravity.py
index 66ca42891b..f604ef3c51 100644
--- a/integration_tests/test_gravity.py
+++ b/integration_tests/test_gravity.py
@@ -1,16 +1,19 @@
-import time
+import json
 from pathlib import Path
 
 import pytest
 from eth_account.account import Account
+from hexbytes import HexBytes
 from pystarport import ports
 
 from .conftest import setup_cronos, setup_geth
 from .network import GravityBridge
 from .utils import (
+    ADDRS,
+    KEYS,
     add_ini_sections,
-    decode_bech32,
     deploy_contract,
+    send_transaction,
     sign_validator,
     supervisorctl,
     wait_for_fn,
@@ -22,6 +25,11 @@
 Account.enable_unaudited_hdwallet_features()
 
 
+def cronos_crc20_abi():
+    path = Path(__file__).parent.parent / "x/cronos/types/contracts/ModuleCRC20.json"
+    return json.load(path.open())["abi"]
+
+
 @pytest.fixture(scope="module")
 def geth(tmp_path_factory):
     "start-geth"
@@ -119,6 +127,7 @@ def gravity(cronos, geth, suspend_capture):
 def test_gravity_transfer(gravity, suspend_capture):
     geth = gravity.geth
     cli = gravity.cronos.cosmos_cli()
+    cronos_w3 = gravity.cronos.w3
 
     # deploy test erc20 contract
     erc20 = deploy_contract(
@@ -138,31 +147,47 @@ def test_gravity_transfer(gravity, suspend_capture):
     geth.eth.wait_for_transaction_receipt(txhash)
 
     # gravity send
-    print("send to cronos")
-    cosmos_recipient = cli.address("community")
-    recipient = b"\x00" * 12 + decode_bech32(cosmos_recipient)
+    print("send to cronos crc20")
+    recipient = HexBytes(ADDRS["community"])
     txhash = gravity.contract.functions.sendToCosmos(
-        erc20.address, recipient, amount
+        erc20.address, b"\x00" * 12 + recipient, amount
     ).transact(tx_tpl)
     geth.eth.wait_for_transaction_receipt(txhash)
     assert erc20.caller.balanceOf(geth.eth.coinbase) == balance - amount
 
     denom = "gravity" + erc20.address
 
+    crc20_contract = None
+
     def check():
-        return cli.balance(cosmos_recipient, denom) == amount
+        nonlocal crc20_contract
+        try:
+            rsp = cli.query_contract_by_denom(denom)
+        except AssertionError:
+            # not deployed yet
+            return False
+        assert len(rsp["auto_contract"]) > 0
+        crc20_contract = cronos_w3.eth.contract(
+            address=rsp["auto_contract"], abi=cronos_crc20_abi()
+        )
+        return crc20_contract.caller.balanceOf(recipient) == amount
 
     wait_for_fn("send-to-cronos", check)
 
     # send it back to erc20
-    print("send back to ethereum")
-    rsp = cli.send_to_ethereum(
-        cosmos_recipient, geth.eth.coinbase, f"{amount}{denom}", f"0{denom}"
+    tx = crc20_contract.functions.send_to_ethereum(
+        geth.eth.coinbase, amount, 0
+    ).buildTransaction(
+        {
+            "gas": 42000,
+            "nonce": cronos_w3.eth.get_transaction_count(recipient),
+        }
     )
-    assert rsp["code"] == 0, rsp["raw_log"]
-    assert cli.balance(cosmos_recipient, denom) == 0
+    txreceipt = send_transaction(cronos_w3, tx, KEYS["community"])
+    assert txreceipt.status == 1, "should success"
 
     def check():
-        return erc20.caller.balanceOf(geth.eth.coinbase) == balance
+        v = erc20.caller.balanceOf(geth.eth.coinbase)
+        return v == balance
 
     wait_for_fn("send-to-ethereum", check)
diff --git a/integration_tests/utils.py b/integration_tests/utils.py
index 826a5620b0..bf0a81c5b7 100644
--- a/integration_tests/utils.py
+++ b/integration_tests/utils.py
@@ -31,7 +31,9 @@
 
 def wait_for_fn(name, fn, *, timeout=120, interval=1):
     for i in range(int(timeout / interval)):
-        if fn():
+        result = fn()
+        print("check", name, result)
+        if result:
             break
         time.sleep(interval)
     else:
@@ -313,3 +315,10 @@ def deploy_contract(w3, jsonfile, args=()):
     txhash = contract.constructor(*args).transact({"from": w3.eth.coinbase})
     address = w3.eth.wait_for_transaction_receipt(txhash).contractAddress
     return w3.eth.contract(address=address, abi=info["abi"])
+
+
+def send_transaction(w3, tx, key):
+    acct = eth_account.Account.from_key(key)
+    signed = acct.sign_transaction(tx)
+    txhash = w3.eth.send_raw_transaction(signed.rawTransaction)
+    return w3.eth.wait_for_transaction_receipt(txhash)
diff --git a/nix/scripts.nix b/nix/scripts.nix
index 6c57bcf613..a024e1bfde 100644
--- a/nix/scripts.nix
+++ b/nix/scripts.nix
@@ -1,10 +1,10 @@
 { pkgs
 , config
-, cronos ? (import ../. { inherit pkgs; })
 }:
 rec {
   start-cronos = pkgs.writeShellScriptBin "start-cronos" ''
-    export PATH=${pkgs.pystarport}/bin:${cronos}/bin:$PATH
+    # rely on environment to provide cronosd
+    export PATH=${pkgs.pystarport}/bin:$PATH
     ${../scripts/start-cronos} ${config.cronos-config} $@
   '';
   start-geth = pkgs.writeShellScriptBin "start-geth" ''
diff --git a/proto/cronos/query.proto b/proto/cronos/query.proto
index 4bbda9cf76..21682ceb7b 100644
--- a/proto/cronos/query.proto
+++ b/proto/cronos/query.proto
@@ -9,7 +9,38 @@ option go_package = "github.com/crypto-org-chain/cronos/x/cronos/types";
 
 // Query defines the gRPC querier service.
 service Query {
+    // ContractByDenom queries contract addresses by native denom
+    rpc ContractByDenom(ContractByDenomRequest) returns (ContractByDenomResponse) {
+        option (google.api.http).get = "/cronos/v1/contract_by_denom/{denom}";
+    }
+
+    // DenomByContract queries native denom by contract address
+    rpc DenomByContract(DenomByContractRequest) returns (DenomByContractResponse) {
+        option (google.api.http).get = "/cronos/v1/denom_by_contract/{contract}";
+    }
+
     // this line is used by starport scaffolding # 2
 }
 
+// ContractByDenomRequest is the request type of ContractByDenom call
+message ContractByDenomRequest {
+    string denom = 1;
+}
+
+// ContractByDenomRequest is the response type of ContractByDenom call
+message ContractByDenomResponse {
+    string contract = 1;
+    string auto_contract = 2;
+}
+
+// DenomByContractRequest is the request type of DenomByContract call
+message DenomByContractRequest {
+    string contract = 1;
+}
+
+// DenomByContractResponse is the response type of DenomByContract call
+message DenomByContractResponse {
+    string denom = 1;
+}
+
 // this line is used by starport scaffolding # 3
diff --git a/x/cronos/client/cli/query.go b/x/cronos/client/cli/query.go
index 645c0f1640..32ad91d347 100644
--- a/x/cronos/client/cli/query.go
+++ b/x/cronos/client/cli/query.go
@@ -2,13 +2,12 @@ package cli
 
 import (
 	"fmt"
-	// "strings"
 
 	"github.com/spf13/cobra"
+	rpctypes "github.com/tharsis/ethermint/ethereum/rpc/types"
 
 	"github.com/cosmos/cosmos-sdk/client"
-	// "github.com/cosmos/cosmos-sdk/client/flags"
-	// sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/client/flags"
 
 	"github.com/crypto-org-chain/cronos/x/cronos/types"
 )
@@ -24,7 +23,74 @@ func GetQueryCmd(queryRoute string) *cobra.Command {
 		RunE:                       client.ValidateCmd,
 	}
 
+	cmd.AddCommand(
+		GetContractByDenomCmd(),
+		GetDenomByContractCmd(),
+	)
+
 	// this line is used by starport scaffolding # 1
 
 	return cmd
 }
+
+// GetContractByDenomCmd queries the contracts by denom
+func GetContractByDenomCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "contract-by-denom [denom]",
+		Short: "Gets contract addresses connected with the coin denom",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			clientCtx, err := client.GetClientQueryContext(cmd)
+			if err != nil {
+				return err
+			}
+
+			queryClient := types.NewQueryClient(clientCtx)
+
+			req := &types.ContractByDenomRequest{
+				Denom: args[0],
+			}
+
+			res, err := queryClient.ContractByDenom(rpctypes.ContextWithHeight(clientCtx.Height), req)
+			if err != nil {
+				return err
+			}
+
+			return clientCtx.PrintProto(res)
+		},
+	}
+
+	flags.AddQueryFlagsToCmd(cmd)
+	return cmd
+}
+
+// GetDenomByContractCmd queries the denom name by contract address
+func GetDenomByContractCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "denom-by-contract [contract]",
+		Short: "Gets the denom of the coin connected with the contract",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			clientCtx, err := client.GetClientQueryContext(cmd)
+			if err != nil {
+				return err
+			}
+
+			queryClient := types.NewQueryClient(clientCtx)
+
+			req := &types.DenomByContractRequest{
+				Contract: args[0],
+			}
+
+			res, err := queryClient.DenomByContract(rpctypes.ContextWithHeight(clientCtx.Height), req)
+			if err != nil {
+				return err
+			}
+
+			return clientCtx.PrintProto(res)
+		},
+	}
+
+	flags.AddQueryFlagsToCmd(cmd)
+	return cmd
+}
diff --git a/x/cronos/keeper/evm_log_handlers.go b/x/cronos/keeper/evm_log_handlers.go
index 80caa6411a..3a4b715f9c 100644
--- a/x/cronos/keeper/evm_log_handlers.go
+++ b/x/cronos/keeper/evm_log_handlers.go
@@ -141,12 +141,12 @@ func (h EthereumTransferHandler) Handle(ctx sdk.Context, contract common.Address
 	}
 
 	contractAddr := sdk.AccAddress(contract.Bytes())
-	recipient := sdk.AccAddress(unpacked[0].(common.Address).Bytes())
+	ethRecipient := unpacked[0].(common.Address)
 	amount := sdk.NewIntFromBigInt(unpacked[1].(*big.Int))
 	bridgeFee := sdk.NewIntFromBigInt(unpacked[2].(*big.Int))
 	msg := gravitytypes.MsgSendToEthereum{
 		Sender:            contractAddr.String(),
-		EthereumRecipient: recipient.String(),
+		EthereumRecipient: ethRecipient.Hex(),
 		Amount:            sdk.NewCoin(denom, amount),
 		BridgeFee:         sdk.NewCoin(denom, bridgeFee),
 	}
diff --git a/x/cronos/keeper/grpc_query.go b/x/cronos/keeper/grpc_query.go
index 7c2e6b44e0..0a07c5364c 100644
--- a/x/cronos/keeper/grpc_query.go
+++ b/x/cronos/keeper/grpc_query.go
@@ -1,7 +1,42 @@
 package keeper
 
 import (
+	"context"
+	"fmt"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/crypto-org-chain/cronos/x/cronos/types"
+	"github.com/ethereum/go-ethereum/common"
 )
 
 var _ types.QueryServer = Keeper{}
+
+// ContractByDenom query contract by denom, returns both external contract and auto deployed contract
+func (k Keeper) ContractByDenom(goCtx context.Context, req *types.ContractByDenomRequest) (*types.ContractByDenomResponse, error) {
+	ctx := sdk.UnwrapSDKContext(goCtx)
+	rsp := types.ContractByDenomResponse{}
+	contract, found := k.getExternalContractByDenom(ctx, req.Denom)
+	if found {
+		rsp.Contract = contract.String()
+	}
+	autoContract, found := k.getAutoContractByDenom(ctx, req.Denom)
+	if found {
+		rsp.AutoContract = autoContract.String()
+	}
+	if len(rsp.Contract) == 0 && len(rsp.AutoContract) == 0 {
+		return nil, fmt.Errorf("contract for the coin denom %s is not found", req.Denom)
+	}
+	return &rsp, nil
+}
+
+// DenomByContract query denom by contract
+func (k Keeper) DenomByContract(goCtx context.Context, req *types.DenomByContractRequest) (*types.DenomByContractResponse, error) {
+	ctx := sdk.UnwrapSDKContext(goCtx)
+	denom, found := k.GetDenomByContract(ctx, common.HexToAddress(req.Contract))
+	if !found {
+		return nil, fmt.Errorf("coin denom for contract %s is not found", req.Contract)
+	}
+	return &types.DenomByContractResponse{
+		Denom: denom,
+	}, nil
+}
diff --git a/x/cronos/keeper/hooks.go b/x/cronos/keeper/hooks.go
index 3c6c02fc25..09074b6c22 100644
--- a/x/cronos/keeper/hooks.go
+++ b/x/cronos/keeper/hooks.go
@@ -2,6 +2,7 @@ package keeper
 
 import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/ethereum/go-ethereum/common"
 	gravitytypes "github.com/peggyjv/gravity-bridge/module/x/gravity/types"
 )
 
@@ -16,4 +17,33 @@ func (k Keeper) AfterSignerSetExecutedEvent(ctx sdk.Context, event gravitytypes.
 
 func (k Keeper) AfterBatchExecutedEvent(ctx sdk.Context, event gravitytypes.BatchExecutedEvent) {}
 
-func (k Keeper) AfterSendToCosmosEvent(ctx sdk.Context, event gravitytypes.SendToCosmosEvent) {}
+func (k Keeper) AfterSendToCosmosEvent(ctx sdk.Context, event gravitytypes.SendToCosmosEvent) {
+	cacheCtx, commit := ctx.CacheContext()
+	err := k.doAfterSendToCosmosEvent(cacheCtx, event)
+	if err == nil {
+		commit()
+	} else {
+		k.Logger(ctx).Error("AfterSendToCosmosEvent hook failed", "error", err)
+	}
+}
+
+func (k Keeper) doAfterSendToCosmosEvent(ctx sdk.Context, event gravitytypes.SendToCosmosEvent) error {
+	isCosmosOriginated, denom := k.gravityKeeper.ERC20ToDenomLookup(ctx, event.TokenContract)
+	if isCosmosOriginated {
+		// ignore cosmos originated transfer
+		return nil
+	}
+	// Try to convert the newly minted native tokens to erc20 contract
+	cosmosAddr, err := sdk.AccAddressFromBech32(event.CosmosReceiver)
+	if err != nil {
+		return err
+	}
+	addr := common.BytesToAddress(cosmosAddr.Bytes())
+	// Use auto deploy here for testing.
+	// FIXME update after gov feature is implemented: https://github.com/crypto-org-chain/cronos/issues/46
+	err = k.ConvertCoinFromNativeToCRC20(ctx, addr, sdk.NewCoin(denom, event.Amount), true)
+	if err != nil {
+		return err
+	}
+	return nil
+}
diff --git a/x/cronos/keeper/ibc_hooks_test.go b/x/cronos/keeper/ibc_hooks_test.go
index cf470993bd..3788e7a17e 100644
--- a/x/cronos/keeper/ibc_hooks_test.go
+++ b/x/cronos/keeper/ibc_hooks_test.go
@@ -75,6 +75,7 @@ func (suite *KeeperTestSuite) TestOnRecvTransfer() {
 				suite.app.GetSubspace(types.ModuleName),
 				suite.app.BankKeeper,
 				keepertest.IbcKeeperMock{},
+				suite.app.GravityKeeper,
 				suite.app.EvmKeeper,
 			)
 			suite.app.CronosKeeper = cronosKeeper
diff --git a/x/cronos/keeper/ibc_test.go b/x/cronos/keeper/ibc_test.go
index ee6950856e..0cde6c7892 100644
--- a/x/cronos/keeper/ibc_test.go
+++ b/x/cronos/keeper/ibc_test.go
@@ -3,6 +3,9 @@ package keeper_test
 import (
 	"errors"
 	"fmt"
+
+	"math/big"
+
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/crypto-org-chain/cronos/app"
 	cronosmodulekeeper "github.com/crypto-org-chain/cronos/x/cronos/keeper"
@@ -10,7 +13,6 @@ import (
 	"github.com/crypto-org-chain/cronos/x/cronos/types"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/tharsis/ethermint/crypto/ethsecp256k1"
-	"math/big"
 )
 
 const CorrectIbcDenom = "ibc/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
@@ -260,6 +262,7 @@ func (suite *KeeperTestSuite) TestIbcTransferCoins() {
 				suite.app.GetSubspace(types.ModuleName),
 				suite.app.BankKeeper,
 				keepertest.IbcKeeperMock{},
+				suite.app.GravityKeeper,
 				suite.app.EvmKeeper,
 			)
 			suite.app.CronosKeeper = cronosKeeper
diff --git a/x/cronos/keeper/keeper.go b/x/cronos/keeper/keeper.go
index 1cc5f850de..aab59203e1 100644
--- a/x/cronos/keeper/keeper.go
+++ b/x/cronos/keeper/keeper.go
@@ -27,6 +27,8 @@ type (
 		bankKeeper types.BankKeeper
 		// ibc transfer operations
 		transferKeeper types.TransferKeeper
+		// gravity bridge keeper
+		gravityKeeper types.GravityKeeper
 		// ethermint evm keeper
 		evmKeeper *evmkeeper.Keeper
 
@@ -41,6 +43,7 @@ func NewKeeper(
 	paramSpace paramtypes.Subspace,
 	bankKeeper types.BankKeeper,
 	transferKeeper types.TransferKeeper,
+	gravityKeeper types.GravityKeeper,
 	evmKeeper *evmkeeper.Keeper,
 	// this line is used by starport scaffolding # ibc/keeper/parameter
 ) *Keeper {
@@ -57,6 +60,7 @@ func NewKeeper(
 		paramSpace:     paramSpace,
 		bankKeeper:     bankKeeper,
 		transferKeeper: transferKeeper,
+		gravityKeeper:  gravityKeeper,
 		evmKeeper:      evmKeeper,
 		// this line is used by starport scaffolding # ibc/keeper/return
 	}
diff --git a/x/cronos/keeper/params_test.go b/x/cronos/keeper/params_test.go
index 69d27d63cc..39edd470e5 100644
--- a/x/cronos/keeper/params_test.go
+++ b/x/cronos/keeper/params_test.go
@@ -2,6 +2,7 @@ package keeper_test
 
 import (
 	"errors"
+
 	"github.com/crypto-org-chain/cronos/app"
 	cronosmodulekeeper "github.com/crypto-org-chain/cronos/x/cronos/keeper"
 	keepertest "github.com/crypto-org-chain/cronos/x/cronos/keeper/mock"
@@ -43,6 +44,7 @@ func (suite *KeeperTestSuite) TestGetSourceChannelID() {
 				suite.app.GetSubspace(types.ModuleName),
 				suite.app.BankKeeper,
 				keepertest.IbcKeeperMock{},
+				suite.app.GravityKeeper,
 				suite.app.EvmKeeper,
 			)
 			suite.app.CronosKeeper = cronosKeeper
diff --git a/x/cronos/types/contracts/ModuleCRC20.json b/x/cronos/types/contracts/ModuleCRC20.json
index dca2b0b980..fed1b66d76 100644
--- a/x/cronos/types/contracts/ModuleCRC20.json
+++ b/x/cronos/types/contracts/ModuleCRC20.json
@@ -644,5 +644,5 @@
       "type": "function"
     }
   ],
-  "bin": 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 }
diff --git a/x/cronos/types/interfaces.go b/x/cronos/types/interfaces.go
index 93716669c9..50e3e00a9b 100644
--- a/x/cronos/types/interfaces.go
+++ b/x/cronos/types/interfaces.go
@@ -39,6 +39,11 @@ type AccountKeeper interface {
 	GetModuleAccount(ctx sdk.Context, moduleName string) authtypes.ModuleAccountI
 }
 
+// GravityKeeper defines the expected gravity keeper interface
+type GravityKeeper interface {
+	ERC20ToDenomLookup(ctx sdk.Context, tokenContract string) (bool, string)
+}
+
 // EvmLogHandler defines the interface for evm log handler
 type EvmLogHandler interface {
 	// Return the id of the log signature it handles
diff --git a/x/cronos/types/query.pb.go b/x/cronos/types/query.pb.go
index 366c63966a..df7d7aab1d 100644
--- a/x/cronos/types/query.pb.go
+++ b/x/cronos/types/query.pb.go
@@ -11,7 +11,11 @@ import (
 	proto "github.com/gogo/protobuf/proto"
 	_ "google.golang.org/genproto/googleapis/api/annotations"
 	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+	io "io"
 	math "math"
+	math_bits "math/bits"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -25,22 +29,229 @@ var _ = math.Inf
 // proto package needs to be updated.
 const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
 
+// ContractByDenomRequest is the request type of ContractByDenom call
+type ContractByDenomRequest struct {
+	Denom string `protobuf:"bytes,1,opt,name=denom,proto3" json:"denom,omitempty"`
+}
+
+func (m *ContractByDenomRequest) Reset()         { *m = ContractByDenomRequest{} }
+func (m *ContractByDenomRequest) String() string { return proto.CompactTextString(m) }
+func (*ContractByDenomRequest) ProtoMessage()    {}
+func (*ContractByDenomRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_d4ed0fd688c48372, []int{0}
+}
+func (m *ContractByDenomRequest) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *ContractByDenomRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_ContractByDenomRequest.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 *ContractByDenomRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ContractByDenomRequest.Merge(m, src)
+}
+func (m *ContractByDenomRequest) XXX_Size() int {
+	return m.Size()
+}
+func (m *ContractByDenomRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_ContractByDenomRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ContractByDenomRequest proto.InternalMessageInfo
+
+func (m *ContractByDenomRequest) GetDenom() string {
+	if m != nil {
+		return m.Denom
+	}
+	return ""
+}
+
+// ContractByDenomRequest is the response type of ContractByDenom call
+type ContractByDenomResponse struct {
+	Contract     string `protobuf:"bytes,1,opt,name=contract,proto3" json:"contract,omitempty"`
+	AutoContract string `protobuf:"bytes,2,opt,name=auto_contract,json=autoContract,proto3" json:"auto_contract,omitempty"`
+}
+
+func (m *ContractByDenomResponse) Reset()         { *m = ContractByDenomResponse{} }
+func (m *ContractByDenomResponse) String() string { return proto.CompactTextString(m) }
+func (*ContractByDenomResponse) ProtoMessage()    {}
+func (*ContractByDenomResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_d4ed0fd688c48372, []int{1}
+}
+func (m *ContractByDenomResponse) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *ContractByDenomResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_ContractByDenomResponse.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 *ContractByDenomResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ContractByDenomResponse.Merge(m, src)
+}
+func (m *ContractByDenomResponse) XXX_Size() int {
+	return m.Size()
+}
+func (m *ContractByDenomResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_ContractByDenomResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ContractByDenomResponse proto.InternalMessageInfo
+
+func (m *ContractByDenomResponse) GetContract() string {
+	if m != nil {
+		return m.Contract
+	}
+	return ""
+}
+
+func (m *ContractByDenomResponse) GetAutoContract() string {
+	if m != nil {
+		return m.AutoContract
+	}
+	return ""
+}
+
+// DenomByContractRequest is the request type of DenomByContract call
+type DenomByContractRequest struct {
+	Contract string `protobuf:"bytes,1,opt,name=contract,proto3" json:"contract,omitempty"`
+}
+
+func (m *DenomByContractRequest) Reset()         { *m = DenomByContractRequest{} }
+func (m *DenomByContractRequest) String() string { return proto.CompactTextString(m) }
+func (*DenomByContractRequest) ProtoMessage()    {}
+func (*DenomByContractRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_d4ed0fd688c48372, []int{2}
+}
+func (m *DenomByContractRequest) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *DenomByContractRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_DenomByContractRequest.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 *DenomByContractRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_DenomByContractRequest.Merge(m, src)
+}
+func (m *DenomByContractRequest) XXX_Size() int {
+	return m.Size()
+}
+func (m *DenomByContractRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_DenomByContractRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_DenomByContractRequest proto.InternalMessageInfo
+
+func (m *DenomByContractRequest) GetContract() string {
+	if m != nil {
+		return m.Contract
+	}
+	return ""
+}
+
+// DenomByContractResponse is the response type of DenomByContract call
+type DenomByContractResponse struct {
+	Denom string `protobuf:"bytes,1,opt,name=denom,proto3" json:"denom,omitempty"`
+}
+
+func (m *DenomByContractResponse) Reset()         { *m = DenomByContractResponse{} }
+func (m *DenomByContractResponse) String() string { return proto.CompactTextString(m) }
+func (*DenomByContractResponse) ProtoMessage()    {}
+func (*DenomByContractResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_d4ed0fd688c48372, []int{3}
+}
+func (m *DenomByContractResponse) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *DenomByContractResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_DenomByContractResponse.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 *DenomByContractResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_DenomByContractResponse.Merge(m, src)
+}
+func (m *DenomByContractResponse) XXX_Size() int {
+	return m.Size()
+}
+func (m *DenomByContractResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_DenomByContractResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_DenomByContractResponse proto.InternalMessageInfo
+
+func (m *DenomByContractResponse) GetDenom() string {
+	if m != nil {
+		return m.Denom
+	}
+	return ""
+}
+
+func init() {
+	proto.RegisterType((*ContractByDenomRequest)(nil), "cronos.ContractByDenomRequest")
+	proto.RegisterType((*ContractByDenomResponse)(nil), "cronos.ContractByDenomResponse")
+	proto.RegisterType((*DenomByContractRequest)(nil), "cronos.DenomByContractRequest")
+	proto.RegisterType((*DenomByContractResponse)(nil), "cronos.DenomByContractResponse")
+}
+
 func init() { proto.RegisterFile("cronos/query.proto", fileDescriptor_d4ed0fd688c48372) }
 
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-	0x8b, 0xc0, 0x32, 0xc4, 0x00, 0x00, 0x00,
+	// 379 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x7c, 0x92, 0xcd, 0x4a, 0xeb, 0x40,
+	0x14, 0xc7, 0x9b, 0x42, 0xcb, 0xbd, 0xc3, 0xbd, 0x14, 0x86, 0x4b, 0x7b, 0x09, 0x12, 0x25, 0x8a,
+	0x5f, 0xd8, 0x0c, 0x51, 0x9f, 0xa0, 0xba, 0x73, 0x65, 0x97, 0xdd, 0x94, 0x49, 0x1c, 0xd2, 0x80,
+	0x9d, 0x93, 0x66, 0x26, 0xc5, 0x50, 0x0a, 0xa2, 0x2f, 0x50, 0xf0, 0xa5, 0x5c, 0x16, 0xdc, 0xb8,
+	0x94, 0xd6, 0x07, 0x91, 0x4c, 0x32, 0xad, 0xf4, 0xc3, 0x55, 0xe6, 0x9c, 0xf9, 0x9f, 0x73, 0x7e,
+	0xe7, 0x9f, 0x41, 0xd8, 0x8f, 0x81, 0x83, 0x20, 0x83, 0x84, 0xc5, 0xa9, 0x13, 0xc5, 0x20, 0x01,
+	0x57, 0xf3, 0x9c, 0xb9, 0x13, 0x00, 0x04, 0xf7, 0x8c, 0xd0, 0x28, 0x24, 0x94, 0x73, 0x90, 0x54,
+	0x86, 0xc0, 0x45, 0xae, 0x32, 0x4f, 0x7d, 0x10, 0x7d, 0x10, 0xc4, 0xa3, 0x82, 0xe5, 0xe5, 0x64,
+	0xe8, 0x7a, 0x4c, 0x52, 0x97, 0x44, 0x34, 0x08, 0xb9, 0x12, 0xe7, 0x5a, 0xdb, 0x41, 0xf5, 0x2b,
+	0xe0, 0x32, 0xa6, 0xbe, 0x6c, 0xa5, 0xd7, 0x8c, 0x43, 0xbf, 0xcd, 0x06, 0x09, 0x13, 0x12, 0xff,
+	0x43, 0x95, 0xbb, 0x2c, 0xfe, 0x6f, 0xec, 0x19, 0xc7, 0xbf, 0xdb, 0x79, 0x60, 0x77, 0x50, 0x63,
+	0x4d, 0x2f, 0x22, 0xe0, 0x82, 0x61, 0x13, 0xfd, 0xf2, 0x8b, 0xab, 0xa2, 0x66, 0x11, 0xe3, 0x7d,
+	0xf4, 0x97, 0x26, 0x12, 0xba, 0x0b, 0x41, 0x59, 0x09, 0xfe, 0x64, 0x49, 0xdd, 0xcf, 0xbe, 0x44,
+	0x75, 0xd5, 0xb1, 0x95, 0xea, 0x94, 0x66, 0xf9, 0xa1, 0xb5, 0x4d, 0x50, 0x63, 0xad, 0xaa, 0x20,
+	0xda, 0xb8, 0xc2, 0xf9, 0xa4, 0x8c, 0x2a, 0xb7, 0x99, 0x2b, 0xf8, 0xd1, 0x40, 0xb5, 0x95, 0x6d,
+	0xb0, 0xe5, 0xe4, 0x1e, 0x3b, 0x9b, 0x6d, 0x31, 0x77, 0xb7, 0xde, 0xe7, 0x43, 0xed, 0xb3, 0xa7,
+	0xb7, 0xcf, 0x97, 0xf2, 0x21, 0x3e, 0x20, 0xc5, 0x0f, 0x1c, 0xba, 0x44, 0xc3, 0x76, 0xbd, 0xb4,
+	0xab, 0x20, 0xc8, 0x48, 0x7d, 0xc6, 0xf8, 0xd9, 0x40, 0xb5, 0x15, 0xfc, 0x25, 0xc2, 0x66, 0x37,
+	0x96, 0x08, 0x5b, 0xf6, 0xb6, 0x89, 0x42, 0x38, 0xc1, 0x47, 0xdf, 0x10, 0xd4, 0xbc, 0x6c, 0xbe,
+	0x66, 0x21, 0x23, 0x7d, 0x1a, 0xb7, 0x6e, 0x5e, 0x67, 0x96, 0x31, 0x9d, 0x59, 0xc6, 0xc7, 0xcc,
+	0x32, 0x26, 0x73, 0xab, 0x34, 0x9d, 0x5b, 0xa5, 0xf7, 0xb9, 0x55, 0xea, 0xb8, 0x41, 0x28, 0x7b,
+	0x89, 0xe7, 0xf8, 0xd0, 0x27, 0x7e, 0x9c, 0x46, 0x12, 0x9a, 0x10, 0x07, 0x4d, 0xbf, 0x47, 0x43,
+	0xae, 0xbb, 0x3f, 0xe8, 0x83, 0x4c, 0x23, 0x26, 0xbc, 0xaa, 0x7a, 0x59, 0x17, 0x5f, 0x01, 0x00,
+	0x00, 0xff, 0xff, 0xf7, 0xcb, 0x7f, 0xa6, 0xc1, 0x02, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -55,6 +266,10 @@ 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 {
+	// ContractByDenom queries contract addresses by native denom
+	ContractByDenom(ctx context.Context, in *ContractByDenomRequest, opts ...grpc.CallOption) (*ContractByDenomResponse, error)
+	// DenomByContract queries native denom by contract address
+	DenomByContract(ctx context.Context, in *DenomByContractRequest, opts ...grpc.CallOption) (*DenomByContractResponse, error)
 }
 
 type queryClient struct {
@@ -65,22 +280,741 @@ func NewQueryClient(cc grpc1.ClientConn) QueryClient {
 	return &queryClient{cc}
 }
 
+func (c *queryClient) ContractByDenom(ctx context.Context, in *ContractByDenomRequest, opts ...grpc.CallOption) (*ContractByDenomResponse, error) {
+	out := new(ContractByDenomResponse)
+	err := c.cc.Invoke(ctx, "/cronos.Query/ContractByDenom", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *queryClient) DenomByContract(ctx context.Context, in *DenomByContractRequest, opts ...grpc.CallOption) (*DenomByContractResponse, error) {
+	out := new(DenomByContractResponse)
+	err := c.cc.Invoke(ctx, "/cronos.Query/DenomByContract", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // QueryServer is the server API for Query service.
 type QueryServer interface {
+	// ContractByDenom queries contract addresses by native denom
+	ContractByDenom(context.Context, *ContractByDenomRequest) (*ContractByDenomResponse, error)
+	// DenomByContract queries native denom by contract address
+	DenomByContract(context.Context, *DenomByContractRequest) (*DenomByContractResponse, error)
 }
 
 // UnimplementedQueryServer can be embedded to have forward compatible implementations.
 type UnimplementedQueryServer struct {
 }
 
+func (*UnimplementedQueryServer) ContractByDenom(ctx context.Context, req *ContractByDenomRequest) (*ContractByDenomResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method ContractByDenom not implemented")
+}
+func (*UnimplementedQueryServer) DenomByContract(ctx context.Context, req *DenomByContractRequest) (*DenomByContractResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method DenomByContract not implemented")
+}
+
 func RegisterQueryServer(s grpc1.Server, srv QueryServer) {
 	s.RegisterService(&_Query_serviceDesc, srv)
 }
 
+func _Query_ContractByDenom_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ContractByDenomRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(QueryServer).ContractByDenom(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/cronos.Query/ContractByDenom",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(QueryServer).ContractByDenom(ctx, req.(*ContractByDenomRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Query_DenomByContract_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(DenomByContractRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(QueryServer).DenomByContract(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/cronos.Query/DenomByContract",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(QueryServer).DenomByContract(ctx, req.(*DenomByContractRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _Query_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "cronos.Query",
 	HandlerType: (*QueryServer)(nil),
-	Methods:     []grpc.MethodDesc{},
-	Streams:     []grpc.StreamDesc{},
-	Metadata:    "cronos/query.proto",
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "ContractByDenom",
+			Handler:    _Query_ContractByDenom_Handler,
+		},
+		{
+			MethodName: "DenomByContract",
+			Handler:    _Query_DenomByContract_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "cronos/query.proto",
+}
+
+func (m *ContractByDenomRequest) 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 *ContractByDenomRequest) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *ContractByDenomRequest) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if len(m.Denom) > 0 {
+		i -= len(m.Denom)
+		copy(dAtA[i:], m.Denom)
+		i = encodeVarintQuery(dAtA, i, uint64(len(m.Denom)))
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
+func (m *ContractByDenomResponse) 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 *ContractByDenomResponse) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *ContractByDenomResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if len(m.AutoContract) > 0 {
+		i -= len(m.AutoContract)
+		copy(dAtA[i:], m.AutoContract)
+		i = encodeVarintQuery(dAtA, i, uint64(len(m.AutoContract)))
+		i--
+		dAtA[i] = 0x12
+	}
+	if len(m.Contract) > 0 {
+		i -= len(m.Contract)
+		copy(dAtA[i:], m.Contract)
+		i = encodeVarintQuery(dAtA, i, uint64(len(m.Contract)))
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
+func (m *DenomByContractRequest) 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 *DenomByContractRequest) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *DenomByContractRequest) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if len(m.Contract) > 0 {
+		i -= len(m.Contract)
+		copy(dAtA[i:], m.Contract)
+		i = encodeVarintQuery(dAtA, i, uint64(len(m.Contract)))
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
+func (m *DenomByContractResponse) 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 *DenomByContractResponse) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *DenomByContractResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if len(m.Denom) > 0 {
+		i -= len(m.Denom)
+		copy(dAtA[i:], m.Denom)
+		i = encodeVarintQuery(dAtA, i, uint64(len(m.Denom)))
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
+func encodeVarintQuery(dAtA []byte, offset int, v uint64) int {
+	offset -= sovQuery(v)
+	base := offset
+	for v >= 1<<7 {
+		dAtA[offset] = uint8(v&0x7f | 0x80)
+		v >>= 7
+		offset++
+	}
+	dAtA[offset] = uint8(v)
+	return base
+}
+func (m *ContractByDenomRequest) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.Denom)
+	if l > 0 {
+		n += 1 + l + sovQuery(uint64(l))
+	}
+	return n
+}
+
+func (m *ContractByDenomResponse) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.Contract)
+	if l > 0 {
+		n += 1 + l + sovQuery(uint64(l))
+	}
+	l = len(m.AutoContract)
+	if l > 0 {
+		n += 1 + l + sovQuery(uint64(l))
+	}
+	return n
+}
+
+func (m *DenomByContractRequest) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.Contract)
+	if l > 0 {
+		n += 1 + l + sovQuery(uint64(l))
+	}
+	return n
+}
+
+func (m *DenomByContractResponse) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.Denom)
+	if l > 0 {
+		n += 1 + l + sovQuery(uint64(l))
+	}
+	return n
+}
+
+func sovQuery(x uint64) (n int) {
+	return (math_bits.Len64(x|1) + 6) / 7
+}
+func sozQuery(x uint64) (n int) {
+	return sovQuery(uint64((x << 1) ^ uint64((int64(x) >> 63))))
+}
+func (m *ContractByDenomRequest) 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: ContractByDenomRequest: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: ContractByDenomRequest: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Denom", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowQuery
+				}
+				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 ErrInvalidLengthQuery
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthQuery
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Denom = string(dAtA[iNdEx:postIndex])
+			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 *ContractByDenomResponse) 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: ContractByDenomResponse: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: ContractByDenomResponse: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Contract", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowQuery
+				}
+				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 ErrInvalidLengthQuery
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthQuery
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Contract = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field AutoContract", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowQuery
+				}
+				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 ErrInvalidLengthQuery
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthQuery
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.AutoContract = string(dAtA[iNdEx:postIndex])
+			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 *DenomByContractRequest) 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: DenomByContractRequest: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: DenomByContractRequest: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Contract", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowQuery
+				}
+				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 ErrInvalidLengthQuery
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthQuery
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Contract = string(dAtA[iNdEx:postIndex])
+			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 *DenomByContractResponse) 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: DenomByContractResponse: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: DenomByContractResponse: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Denom", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowQuery
+				}
+				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 ErrInvalidLengthQuery
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthQuery
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Denom = string(dAtA[iNdEx:postIndex])
+			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 skipQuery(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, ErrIntOverflowQuery
+			}
+			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, ErrIntOverflowQuery
+				}
+				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, ErrIntOverflowQuery
+				}
+				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, ErrInvalidLengthQuery
+			}
+			iNdEx += length
+		case 3:
+			depth++
+		case 4:
+			if depth == 0 {
+				return 0, ErrUnexpectedEndOfGroupQuery
+			}
+			depth--
+		case 5:
+			iNdEx += 4
+		default:
+			return 0, fmt.Errorf("proto: illegal wireType %d", wireType)
+		}
+		if iNdEx < 0 {
+			return 0, ErrInvalidLengthQuery
+		}
+		if depth == 0 {
+			return iNdEx, nil
+		}
+	}
+	return 0, io.ErrUnexpectedEOF
+}
+
+var (
+	ErrInvalidLengthQuery        = fmt.Errorf("proto: negative length found during unmarshaling")
+	ErrIntOverflowQuery          = fmt.Errorf("proto: integer overflow")
+	ErrUnexpectedEndOfGroupQuery = fmt.Errorf("proto: unexpected end of group")
+)
diff --git a/x/cronos/types/query.pb.gw.go b/x/cronos/types/query.pb.gw.go
new file mode 100644
index 0000000000..233de3ba75
--- /dev/null
+++ b/x/cronos/types/query.pb.gw.go
@@ -0,0 +1,282 @@
+// Code generated by protoc-gen-grpc-gateway. DO NOT EDIT.
+// source: cronos/query.proto
+
+/*
+Package types is a reverse proxy.
+
+It translates gRPC into RESTful JSON APIs.
+*/
+package types
+
+import (
+	"context"
+	"io"
+	"net/http"
+
+	"github.com/golang/protobuf/descriptor"
+	"github.com/golang/protobuf/proto"
+	"github.com/grpc-ecosystem/grpc-gateway/runtime"
+	"github.com/grpc-ecosystem/grpc-gateway/utilities"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/grpclog"
+	"google.golang.org/grpc/status"
+)
+
+// Suppress "imported and not used" errors
+var _ codes.Code
+var _ io.Reader
+var _ status.Status
+var _ = runtime.String
+var _ = utilities.NewDoubleArray
+var _ = descriptor.ForMessage
+
+func request_Query_ContractByDenom_0(ctx context.Context, marshaler runtime.Marshaler, client QueryClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq ContractByDenomRequest
+	var metadata runtime.ServerMetadata
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["denom"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "denom")
+	}
+
+	protoReq.Denom, err = runtime.String(val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "denom", err)
+	}
+
+	msg, err := client.ContractByDenom(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func local_request_Query_ContractByDenom_0(ctx context.Context, marshaler runtime.Marshaler, server QueryServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq ContractByDenomRequest
+	var metadata runtime.ServerMetadata
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["denom"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "denom")
+	}
+
+	protoReq.Denom, err = runtime.String(val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "denom", err)
+	}
+
+	msg, err := server.ContractByDenom(ctx, &protoReq)
+	return msg, metadata, err
+
+}
+
+func request_Query_DenomByContract_0(ctx context.Context, marshaler runtime.Marshaler, client QueryClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq DenomByContractRequest
+	var metadata runtime.ServerMetadata
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["contract"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "contract")
+	}
+
+	protoReq.Contract, err = runtime.String(val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "contract", err)
+	}
+
+	msg, err := client.DenomByContract(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func local_request_Query_DenomByContract_0(ctx context.Context, marshaler runtime.Marshaler, server QueryServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq DenomByContractRequest
+	var metadata runtime.ServerMetadata
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["contract"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "contract")
+	}
+
+	protoReq.Contract, err = runtime.String(val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "contract", err)
+	}
+
+	msg, err := server.DenomByContract(ctx, &protoReq)
+	return msg, metadata, err
+
+}
+
+// RegisterQueryHandlerServer registers the http handlers for service Query to "mux".
+// UnaryRPC     :call QueryServer directly.
+// StreamingRPC :currently unsupported pending https://github.com/grpc/grpc-go/issues/906.
+// Note that using this registration option will cause many gRPC library features (such as grpc.SendHeader, etc) to stop working. Consider using RegisterQueryHandlerFromEndpoint instead.
+func RegisterQueryHandlerServer(ctx context.Context, mux *runtime.ServeMux, server QueryServer) error {
+
+	mux.Handle("GET", pattern_Query_ContractByDenom_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.AnnotateIncomingContext(ctx, mux, req)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_Query_ContractByDenom_0(rctx, inboundMarshaler, server, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_Query_ContractByDenom_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	mux.Handle("GET", pattern_Query_DenomByContract_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.AnnotateIncomingContext(ctx, mux, req)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_Query_DenomByContract_0(rctx, inboundMarshaler, server, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_Query_DenomByContract_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	return nil
+}
+
+// RegisterQueryHandlerFromEndpoint is same as RegisterQueryHandler but
+// automatically dials to "endpoint" and closes the connection when "ctx" gets done.
+func RegisterQueryHandlerFromEndpoint(ctx context.Context, mux *runtime.ServeMux, endpoint string, opts []grpc.DialOption) (err error) {
+	conn, err := grpc.Dial(endpoint, opts...)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if err != nil {
+			if cerr := conn.Close(); cerr != nil {
+				grpclog.Infof("Failed to close conn to %s: %v", endpoint, cerr)
+			}
+			return
+		}
+		go func() {
+			<-ctx.Done()
+			if cerr := conn.Close(); cerr != nil {
+				grpclog.Infof("Failed to close conn to %s: %v", endpoint, cerr)
+			}
+		}()
+	}()
+
+	return RegisterQueryHandler(ctx, mux, conn)
+}
+
+// RegisterQueryHandler registers the http handlers for service Query to "mux".
+// The handlers forward requests to the grpc endpoint over "conn".
+func RegisterQueryHandler(ctx context.Context, mux *runtime.ServeMux, conn *grpc.ClientConn) error {
+	return RegisterQueryHandlerClient(ctx, mux, NewQueryClient(conn))
+}
+
+// RegisterQueryHandlerClient registers the http handlers for service Query
+// to "mux". The handlers forward requests to the grpc endpoint over the given implementation of "QueryClient".
+// Note: the gRPC framework executes interceptors within the gRPC handler. If the passed in "QueryClient"
+// doesn't go through the normal gRPC flow (creating a gRPC client etc.) then it will be up to the passed in
+// "QueryClient" to call the correct interceptors.
+func RegisterQueryHandlerClient(ctx context.Context, mux *runtime.ServeMux, client QueryClient) error {
+
+	mux.Handle("GET", pattern_Query_ContractByDenom_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_ContractByDenom_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_ContractByDenom_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	mux.Handle("GET", pattern_Query_DenomByContract_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_DenomByContract_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_DenomByContract_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	return nil
+}
+
+var (
+	pattern_Query_ContractByDenom_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 1, 0, 4, 1, 5, 3}, []string{"cronos", "v1", "contract_by_denom", "denom"}, "", runtime.AssumeColonVerbOpt(true)))
+
+	pattern_Query_DenomByContract_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 1, 0, 4, 1, 5, 3}, []string{"cronos", "v1", "denom_by_contract", "contract"}, "", runtime.AssumeColonVerbOpt(true)))
+)
+
+var (
+	forward_Query_ContractByDenom_0 = runtime.ForwardResponseMessage
+
+	forward_Query_DenomByContract_0 = runtime.ForwardResponseMessage
+)