diff --git a/CHANGELOG.md b/CHANGELOG.md
index 336ef4942..8906aecca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,36 @@
 # Changelog
 
+## Unreleased [v2.0.0](https://github.com/MinterTeam/minter-go-node/tree/v2.0)
+
+[Full Changelog](https://github.com/MinterTeam/minter-go-node/compare/v1.2.1...v2.0)
+
+### Added
+
+- exchange transactions via liquidity pools
+- voting for network commissions with linking the rate to any coin
+- smooth network update without stopping
+- creation of unreserved coins
+- allowed to change the validator's commission
+- the period for recalculating stakes and accruing rewards increased from 120 blocks to 720
+- validator penalty for skipped network blocks replaced with 24-hour ban
+
+### Changed
+
+- API v2 [changelog](https://klim0v.github.io/minter-node-api-v2-diff/)
+- continuation of block numbering from the previous version of the network
+
+### Removed
+
+- Delete API v1
+- Delete transactions `PriceVote`
+
+### Fixed
+
+### Security
+
+- Update Tendermint to 0.34.8
+- Update IAVL to v0.15.3
+
 ## 1.2.1
 
 - [core] Add tags old_coin_symbol and old_coin_id to RecreateCoin tx
diff --git a/api/v2/service/frozen.go b/api/v2/service/frozen.go
index e872d8238..2511d972f 100644
--- a/api/v2/service/frozen.go
+++ b/api/v2/service/frozen.go
@@ -18,7 +18,10 @@ func (s *Service) Frozen(ctx context.Context, req *pb.FrozenRequest) (*pb.Frozen
 		return nil, status.Error(codes.InvalidArgument, "invalid address")
 	}
 
-	cState := s.blockchain.CurrentState()
+	cState, err := s.blockchain.GetStateForHeight(req.Height)
+	if err != nil {
+		return nil, status.Error(codes.NotFound, err.Error())
+	}
 
 	var reqCoin *coins.Model
 
diff --git a/go.mod b/go.mod
index f4dc3748d..d9ff3862a 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/MinterTeam/minter-go-node
 go 1.15
 
 require (
-	github.com/MinterTeam/node-grpc-gateway v1.2.2-0.20210326235021-4107582ce100
+	github.com/MinterTeam/node-grpc-gateway v1.2.2-0.20210327013510-012fe2754dfc
 	github.com/btcsuite/btcd v0.21.0-beta
 	github.com/c-bata/go-prompt v0.2.3
 	github.com/cosmos/iavl v0.15.3
diff --git a/go.sum b/go.sum
index 385b79632..be0f6fc4f 100644
--- a/go.sum
+++ b/go.sum
@@ -40,8 +40,8 @@ github.com/ChainSafe/go-schnorrkel v0.0.0-20200405005733-88cbf1b4c40d/go.mod h1:
 github.com/DataDog/zstd v1.4.1 h1:3oxKN3wbHibqx897utPC2LTQU4J+IHWWJO+glkAkpFM=
 github.com/DataDog/zstd v1.4.1/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
 github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
-github.com/MinterTeam/node-grpc-gateway v1.2.2-0.20210326235021-4107582ce100 h1:Mo4XwNMHI83OQOMIYAZ7Ut/dtekrwbTt/6UYadRzgrk=
-github.com/MinterTeam/node-grpc-gateway v1.2.2-0.20210326235021-4107582ce100/go.mod h1:d4Rw0MtsZTrFNLJJWr/jcurTYcqRVITzWuGDGo7aHxM=
+github.com/MinterTeam/node-grpc-gateway v1.2.2-0.20210327013510-012fe2754dfc h1:8qgOpS6Ic5IbNa/BvwgAD2fiBzTYrwLmCPtheM3yYRc=
+github.com/MinterTeam/node-grpc-gateway v1.2.2-0.20210327013510-012fe2754dfc/go.mod h1:d4Rw0MtsZTrFNLJJWr/jcurTYcqRVITzWuGDGo7aHxM=
 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=