Merge pull request #8 from UptickNetwork/dev

upgrade uptick to version v0.2.4
UptickNetwork · Nov 7, 2022 · 3d1e40d · 3d1e40d
2 parents 0e664f9 + 8ae1b94
commit 3d1e40d
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Showing 17 changed files with 47 additions and 99 deletions.
diff --git a/app/app.go b/app/app.go
@@ -1112,7 +1112,7 @@ func initParamsKeeper(
 func (app *Uptick) registerUpgradeHandlers() {
 	// v0.2.3 upgrade handler
 	app.UpgradeKeeper.SetUpgradeHandler(
-		"v0.2.3",
+		"v0.2.4",
 		func(ctx sdk.Context, _ upgradetypes.Plan, vm module.VersionMap) (module.VersionMap, error) {
 			// Refs:
 			// - https://docs.cosmos.network/master/building-modules/upgrade.html#registering-migrations

diff --git a/cmd/uptickd/testnet.go b/cmd/uptickd/testnet.go
@@ -128,7 +128,7 @@ or a similar setup where each node has a manually configurable IP address.
 Note, strict routability for addresses is turned off in the config file.
 
 Example:
-	evmosd testnet init-files --v 4 --output-dir ./.testnets --starting-ip-address 192.168.10.2
+	uptickd testnet init-files --v 4 --output-dir ./.testnets --starting-ip-address 192.168.10.2
 	`,
 		RunE: func(cmd *cobra.Command, _ []string) error {
 
@@ -156,7 +156,7 @@ Example:
 
 	addTestnetFlagsToCmd(cmd)
 	cmd.Flags().String(flagNodeDirPrefix, "node", "Prefix the directory name for each node with (node results in node0, node1, ...)")
-	cmd.Flags().String(flagNodeDaemonHome, "evmosd", "Home directory of the node's daemon configuration")
+	cmd.Flags().String(flagNodeDaemonHome, "uptickd", "Home directory of the node's daemon configuration")
 	cmd.Flags().String(flagStartingIPAddress, "192.168.0.1", "Starting IP address (192.168.0.1 results in persistent peers list [email protected]:46656, [email protected]:46656, ...)")
 	cmd.Flags().String(flags.FlagKeyringBackend, flags.DefaultKeyringBackend, "Select keyring's backend (os|file|test)")
 
@@ -173,7 +173,7 @@ and generate "v" directories, populated with necessary validator configuration f
 (private validator, genesis, config, etc.).
 
 Example:
-	evmosd testnet --v 4 --output-dir ./.testnets
+	uptickd testnet --v 4 --output-dir ./.testnets
 	`,
 		RunE: func(cmd *cobra.Command, _ []string) error {
 

diff --git a/docs/.vuepress/config.js b/docs/.vuepress/config.js
@@ -62,7 +62,7 @@ module.exports = {
       rpc_url_local: 'http://localhost:8545/',
       chain_id: '未定',
       testnet_chain_id: '7000',
-      latest_version: 'v0.2.2',
+      latest_version: 'v0.2.3',
       version_number: '1',
       testnet_version_number: '2',
       cosmos_block_explorer_url: 'https://explorer.testnet.uptick.network/',
@@ -192,6 +192,10 @@ module.exports = {
               title: 'Uptick (Cosmos)',
               path: 'https://explorer.testnet.uptick.network'
             },
+            {
+              title: 'GN (Cosmos)',
+              path: 'https://uptick.explorers.guru'
+            },
             {
               title: 'Blockscout (EVM)',
               path: 'https://evm-explorer.testnet.uptick.network/'

diff --git a/docs/guides/validators/setup.md b/docs/guides/validators/setup.md
@@ -4,13 +4,6 @@ order: 2
 
 # Run a Validator
 
-::: warning
-During testnet 2.0, we will invite validators in two batches. The first batch is for the validators that want to be genesis validators. This is important to ensure the quality and performance of the initial network. The second batch is for the public nodes that want to be validators. Please fill in this [Google Form](https://forms.gle/T7i77dhjAxXGcjpj9). This will help the team decide which batch will be opened to you.
-
-Once you are able to join as a validoator, here is the instructions for you to set it up.
-:::
-
-
 Learn how to setup and run a validator node {synopsis}
 
 ## Pre-requisite Readings

diff --git a/docs/quickstart/installation.md b/docs/quickstart/installation.md
@@ -25,7 +25,13 @@ go version
 If the `uptickd: command not found` error message is returned, confirm that your [`GOPATH`](https://golang.org/doc/gopath_code#GOPATH) is correctly configured by running the following command:
 
 ```bash
-export PATH=$PATH:$(go env GOPATH)/bin
+mkdir -p $HOME/go/bin
+echo "export GOPATH=$HOME/go" >> ~/.bashrc
+source ~/.bashrc
+echo "export GOBIN=$GOPATH/bin" >> ~/.bashrc
+source ~/.bashrc
+echo "export PATH=$PATH:$GOBIN" >> ~/.bashrc
+source ~/.bashrc
 ```
 
 :::

diff --git a/docs/testnet/join.md b/docs/testnet/join.md
@@ -39,82 +39,39 @@ uptickd config chain-id uptick_7000-1
 We need to initialize the node to create all the necessary validator and node configuration files:
 
 ```bash
+# initialize node configurations
 uptickd init <your_custom_moniker> --chain-id uptick_7000-1
-```
-
-::: danger
-Monikers can contain only ASCII characters. Using Unicode characters will render your node unreachable.
-:::
 
-By default, the `init` command creates your `~/.uptickd` (i.e `$HOME`) directory with subfolders `config/` and `data/`.
-In the `config` directory, the most important files for configuration are `app.toml` and `config.toml`.
+# download testnel public config.toml、app.toml and genesis.json
+curl -o $HOME/.uptickd/config/config.toml https://raw.githubusercontent.com/UptickNetwork/uptick-testnet/main/uptick_7000-1/config.toml
+curl -o $HOME/.uptickd/config/genesis.json https://raw.githubusercontent.com/UptickNetwork/uptick-testnet/main/uptick_7000-1/genesis.json
+curl -o $HOME/.uptickd/config/app.toml https://raw.githubusercontent.com/UptickNetwork/uptick-testnet/main/uptick_7000-1/app.toml
+#download node data and replace data file
+wget http://download.uptick.network/download/uptick/testnet/node/data/data.tar.gz
 
-## Genesis & Seeds
+```
 
-### Copy the Genesis File
+## Start testnet
 
-Check the `genesis.json` file from the [`testnets`](https://github.com/UptickNetwork/uptick-testnet) repository and copy it over to the `config` directory: `~/.uptickd/config/genesis.json`. This is a genesis file with the chain-id and genesis accounts balances.
+The final step is to [start the nodes](./../quickstart/run_node#start-node). Once enough voting power (+2/3) from the genesis validators is up-and-running, the testnet will start producing blocks.
 
 ```bash
-curl https://raw.githubusercontent.com/UptickNetwork/uptick-testnet/main/uptick_7000-1/genesis.json > ~/.uptickd/config/genesis.json
+uptickd start
 ```
 
-Then verify the correctness of the genesis configuration file:
-
+##  Install script
 ```bash
-uptickd validate-genesis
-```
-
-### Add Seed Nodes
-
-Your node needs to know how to find [peers](https://docs.tendermint.com/master/tendermint-core/using-tendermint.html#peers). You'll need to add healthy [seed nodes](https://docs.tendermint.com/master/tendermint-core/using-tendermint.html#seed) to `$HOME/.uptickd/config/config.toml`. The [`testnets`](https://github.com/UptickNetwork/uptick-testnet) repo contains links to some seed nodes.
-
-Edit the file located in `~/.uptickd/config/config.toml` and the `seeds` to the following:
+wget https://raw.githubusercontent.com/UptickNetwork/uptick-testnet/main/uptick_7000-1/node.sh && chmod +x node.sh
+./node.sh
 
-```toml
-#######################################################
-###           P2P Configuration Options             ###
-#######################################################
-[p2p]
-
-# ...
-
-# Comma separated list of seed nodes to connect to
-seeds = "<node-id>@<ip>:<p2p port>"
 ```
 
-You can use the following code to get seeds from the repo and add it to your config:
-
-```bash
-SEEDS=`curl -sL https://raw.githubusercontent.com/UptickNetwork/uptick-testnet/main/uptick_7000-1/seeds.txt | awk '{print $1}' | paste -s -d, -`
-sed -i.bak -e "s/^seeds =.*/seeds = \"$SEEDS\"/" ~/.uptickd/config/config.toml
-```
 
-:::tip
-For more information on seeds and peers, you can the Tendermint [P2P documentation](https://docs.tendermint.com/master/spec/p2p/peer.html).
+:::warning
+[In the test phase 2, the AppHash inconsistency problem occurred in the blockchain 16335.So Synchronizing data from scratch is not supported and a node snapshot is required to synchronize data in this test phase. In addition, the State-Sync is not supported in this version (0.2.3). This synchronization will be supported in the next version.]
 :::
 
-### Add Persistent Peers
-
-We can set the [`persistent_peers`](https://docs.tendermint.com/master/tendermint-core/using-tendermint.html#persistent-peer) field in `~/.uptickd/config/config.toml` to specify peers that your node will maintain persistent connections with. You can retrieve them from the list of
-available peers on the [`testnets`](https://github.com/UptickNetwork/uptick-testnet) repo.
-
-```bash
-PEERS=`curl -sL https://raw.githubusercontent.com/UptickNetwork/uptick-testnet/main/uptick_7000-1/peers.txt | sort -R | head -n 10 | awk '{print $1}' | paste -s -d, -`
-```
-
-Use `sed` to include them into the configuration. You can also add them manually:
-
-```bash
-sed -i.bak -e "s/^persistent_peers *=.*/persistent_peers = \"$PEERS\"/" ~/.uptickd/config/config.toml
-```
-## Start testnet
-
-The final step is to [start the nodes](./../quickstart/run_node#start-node). Once enough voting power (+2/3) from the genesis validators is up-and-running, the testnet will start producing blocks.
 
-```bash
-uptickd start
-```
 ## Run a Testnet Validator
 
 Claim your testnet {{ $themeConfig.project.testnet_denom }} on the [faucet](./faucet.md) using your validator account address and submit your validator account address:
@@ -127,14 +84,14 @@ For more details on how to configure your validator, follow the validator [setup
 uptickd tx staking create-validator \
   --amount=5000000000000000000auptick \
   --pubkey=$(uptickd tendermint show-validator) \
-  --moniker="UptickBuilder" \
+  --moniker=<$moniker>" \
   --chain-id=uptick_7000-1 \
   --commission-rate="0.10" \
   --commission-max-rate="0.20" \
   --commission-max-change-rate="0.01" \
   --min-self-delegation="1000000" \
-  --gas="300000" \
-  --from=node0 \
+  --gas="auto" \
+  --from=<$wallet name> \
   -y \
   -b block
 ```

diff --git a/docs/tools/explorers.md b/docs/tools/explorers.md
@@ -26,4 +26,8 @@ The [Uptick EVM explorer](https://evm-explorer.testnet.uptick.network/) is the E
 
 ![Big Dipper](./img/big_dipper.png)
 
-The [Uptick Cosmos-based explorer](https://explorer.testnet.uptick.network/) is the Cosmos explorer for Uptick. The Cosmos-based explorer allows users to view Uptick activity within the Cosmos ecosystem. This explorer allows users to query transactions, delegations, IBC token transfers, and other Cosmos-related Uptick activity. Users can also view tokeneconomics and governance data using the Uptick Cosmos-based explorer.
+### Uptick Cosmos-based Explorer (GN)
+
+![GN](./img/ng.png)
+
+The [Uptick Cosmos-based Explorer (Ping-hub)](https://explorer.testnet.uptick.network/) and [Uptick Cosmos-based Explorer (GN)](https://uptick.explorers.guru/) is the Cosmos explorer for Uptick. The Cosmos-based explorer allows users to view Uptick activity within the Cosmos ecosystem. This explorer allows users to query transactions, delegations, IBC token transfers, and other Cosmos-related Uptick activity. Users can also view tokeneconomics and governance data using the Uptick Cosmos-based explorer.
diff --git a/docs/tools/img/ng.png b/docs/tools/img/ng.png
diff --git a/go.mod b/go.mod
@@ -187,6 +187,8 @@ require (
 
 replace (
 	github.com/99designs/keyring => github.com/cosmos/keyring v1.1.7-0.20210622111912-ef00f8ac3d76
+	github.com/confio/ics23/go => github.com/cosmos/cosmos-sdk/ics23/go v0.8.0
+	github.com/cosmos/iavl => github.com/uptSmart/iavl v0.19.0-plus
 	github.com/cosmos/ibc-go/v5 => github.com/uptSmart/ibc-go/v5 v5.0.0-nft.0.20220919001233-7a9f083d2ae7
 	github.com/gogo/protobuf => github.com/regen-network/protobuf v1.3.3-alpha.regen.1
 )
diff --git a/go.sum b/go.sum
@@ -214,8 +214,6 @@ github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd/go.mod h1:sE
 github.com/coinbase/kryptology v1.8.0/go.mod h1:RYXOAPdzOGUe3qlSFkMGn58i3xUA8hmxYHksuq+8ciI=
 github.com/coinbase/rosetta-sdk-go v0.7.9 h1:lqllBjMnazTjIqYrOGv8h8jxjg9+hJazIGZr9ZvoCcA=
 github.com/coinbase/rosetta-sdk-go v0.7.9/go.mod h1:0/knutI7XGVqXmmH4OQD8OckFrbQ8yMsUZTG7FXCR2M=
-github.com/confio/ics23/go v0.7.0 h1:00d2kukk7sPoHWL4zZBZwzxnpA2pec1NPdwbSokJ5w8=
-github.com/confio/ics23/go v0.7.0/go.mod h1:E45NqnlpxGnpfTWL/xauN7MRwEE28T4Dd4uraToOaKg=
 github.com/consensys/bavard v0.1.8-0.20210406032232-f3452dc9b572/go.mod h1:Bpd0/3mZuaj6Sj+PqrmIquiOKy397AKGThQPaGzNXAQ=
 github.com/consensys/bavard v0.1.8-0.20210915155054-088da2f7f54a/go.mod h1:9ItSMtA/dXMAiL7BG6bqW2m3NdSEObYWoH223nGHukI=
 github.com/consensys/gnark-crypto v0.4.1-0.20210426202927-39ac3d4b3f1f/go.mod h1:815PAHg3wvysy0SyIqanF8gZ0Y1wjk/hrDHD/iT88+Q=
@@ -233,13 +231,13 @@ github.com/cosmos/cosmos-proto v1.0.0-alpha7 h1:yqYUOHF2jopwZh4dVQp3xgqwftE5/2hk
 github.com/cosmos/cosmos-proto v1.0.0-alpha7/go.mod h1:dosO4pSAbJF8zWCzCoTWP7nNsjcvSUBQmniFxDg5daw=
 github.com/cosmos/cosmos-sdk v0.46.0 h1:TwifvVmAmqUNB70tN1clrqExryWyBU3RxbI2QZEJUJY=
 github.com/cosmos/cosmos-sdk v0.46.0/go.mod h1:u6Ci6+V+srijJhzctEEPYBygUz3O2YXP5ZijPnV6mt0=
+github.com/cosmos/cosmos-sdk/ics23/go v0.8.0 h1:iKclrn3YEOwk4jQHT2ulgzuXyxmzmPczUalMwW4XH9k=
+github.com/cosmos/cosmos-sdk/ics23/go v0.8.0/go.mod h1:2a4dBq88TUoqoWAU5eu0lGvpFP3wWDPgdHPargtyw30=
 github.com/cosmos/go-bip39 v0.0.0-20180819234021-555e2067c45d/go.mod h1:tSxLoYXyBmiFeKpvmq4dzayMdCjCnu8uqmCysIGBT2Y=
 github.com/cosmos/go-bip39 v1.0.0 h1:pcomnQdrdH22njcAatO0yWojsUnCO3y2tNoV1cb6hHY=
 github.com/cosmos/go-bip39 v1.0.0/go.mod h1:RNJv0H/pOIVgxw6KS7QeX2a0Uo0aKUlfhZ4xuwvCdJw=
 github.com/cosmos/gorocksdb v1.2.0 h1:d0l3jJG8M4hBouIZq0mDUHZ+zjOx044J3nGRskwTb4Y=
 github.com/cosmos/gorocksdb v1.2.0/go.mod h1:aaKvKItm514hKfNJpUJXnnOWeBnk2GL4+Qw9NHizILw=
-github.com/cosmos/iavl v0.19.0 h1:sgyrjqOkycXiN7Tuupuo4QAldKFg7Sipyfeg/IL7cps=
-github.com/cosmos/iavl v0.19.0/go.mod h1:l5h9pAB3m5fihB3pXVgwYqdY8aBsMagqz7T0MUjxZeA=
 github.com/cosmos/keyring v1.1.7-0.20210622111912-ef00f8ac3d76 h1:DdzS1m6o/pCqeZ8VOAit/gyATedRgjvkVI+UCrLpyuU=
 github.com/cosmos/keyring v1.1.7-0.20210622111912-ef00f8ac3d76/go.mod h1:0mkLWIoZuQ7uBoospo5Q9zIpqq6rYCPJDSUdeCJvPM8=
 github.com/cosmos/ledger-cosmos-go v0.11.1 h1:9JIYsGnXP613pb2vPjFeMMjBI5lEDsEaF6oYorTy6J4=
@@ -1006,6 +1004,8 @@ github.com/ugorji/go/codec v1.1.7 h1:2SvQaVZ1ouYrrKKwoSk2pzd4A9evlKJb9oTL+OaLUSs
 github.com/ugorji/go/codec v1.1.7/go.mod h1:Ax+UKWsSmolVDwsd+7N3ZtXu+yMGCf907BLYF3GoBXY=
 github.com/ulikunitz/xz v0.5.8 h1:ERv8V6GKqVi23rgu5cj9pVfVzJbOqAY2Ntl88O6c2nQ=
 github.com/ulikunitz/xz v0.5.8/go.mod h1:nbz6k7qbPmH4IRqmfOplQw/tblSgqTqBwxkY0oWt/14=
+github.com/uptSmart/iavl v0.19.0-plus h1:jLkavZwIsFeMcJEbaBOIcwNoPNY6Qd4S0KH94RVWGDg=
+github.com/uptSmart/iavl v0.19.0-plus/go.mod h1:l5h9pAB3m5fihB3pXVgwYqdY8aBsMagqz7T0MUjxZeA=
 github.com/uptSmart/ibc-go/v5 v5.0.0-nft.0.20220919001233-7a9f083d2ae7 h1:F0Snsj1uVWTLuiNgvPsjvUl9nxASpLAnPyWdbcESClw=
 github.com/uptSmart/ibc-go/v5 v5.0.0-nft.0.20220919001233-7a9f083d2ae7/go.mod h1:ny+jMly7+e6qgBRmWLy4a3W9yPBjzBDQ98hMvnYpJ0Q=
 github.com/urfave/cli v1.20.0/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijbERA=

diff --git a/networks/local/uptick/Dockerfile b/networks/local/uptick/Dockerfile
@@ -27,5 +27,5 @@ COPY --from=build-env /go/src/github.com/UptickNetwork/uptick/scripts/start-dock
 
 EXPOSE 26656 26657 1317 8545 8546
 
-# Run evmosd by default, omit entrypoint to ease using container with evmosd
+# Run uptickd by default, omit entrypoint to ease using container with uptickd
 ENTRYPOINT ["/bin/bash", "-c"]
diff --git a/release/uptick-v0.2.3.tar.gz b/release/uptick-v0.2.3.tar.gz
diff --git a/release/uptick-v0.2.4.tar.gz b/release/uptick-v0.2.4.tar.gz
diff --git a/x/erc721/keeper/evm.go b/x/erc721/keeper/evm.go
@@ -2,7 +2,6 @@ package keeper
 
 import (
 	"encoding/json"
-	"fmt"
 	"math/big"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
@@ -73,8 +72,6 @@ func (k Keeper) QueryERC721(
 		return types.ERC721Data{}, err
 	}
 
-	fmt.Printf("###################CallEVM name : %v+ \n",res)
-
 	if err := erc721.UnpackIntoInterface(&nameRes, "name", res.Ret); err != nil {
 		return types.ERC721Data{}, sdkerrors.Wrapf(
 			types.ErrABIUnpack, "failed to unpack name: %s", err.Error(),
@@ -183,7 +180,6 @@ func (k Keeper) QueryERC721TokenOwner(
 
 	erc721 := contracts.ERC721PresetMinterPauserAutoIdsContract.ABI
 
-	fmt.Printf("################### QueryERC721TokenOwner tokenID %v+ \n",tokenID)
 	// Name
 	res, err := k.CallEVM(ctx, erc721, types.ModuleAddress, contract, false, "ownerOf", tokenID)
 	if err != nil {
@@ -209,21 +205,17 @@ func (k Keeper) CallEVM(
 	args ...interface{},
 ) (*evmtypes.MsgEthereumTxResponse, error) {
 
-	fmt.Printf("################### CallEVM method 0 %v+,args %v+ \n",method,args)
 	data, err := abi.Pack(method, args...)
 	if err != nil {
-		fmt.Println("################### CallEVM method 0.1 error")
 		return nil, sdkerrors.Wrap(
 			types.ErrABIPack,
 			sdkerrors.Wrap(err, "failed to create transaction data").Error(),
 		)
 	}
 
-	fmt.Printf("################### CallEVM method 1 from : %v+,contract %v+ data %v+ commit  %v+\n",from,contract,data,commit)
 	resp, err := k.CallEVMWithData(ctx, from, &contract, data, commit)
 	if err != nil {
 
-		fmt.Println("################### CallEVM method 1.1 error")
 		return nil, sdkerrors.Wrapf(err, "contract call failed: method '%s', contract '%s'", method, contract)
 	}
 	return resp, nil

diff --git a/x/erc721/keeper/keeper.go b/x/erc721/keeper/keeper.go
@@ -41,9 +41,6 @@ func NewKeeper(
 		ps = ps.WithKeyTable(types.ParamKeyTable())
 	}
 
-	fmt.Printf("################### NewKeeper storeKey is %v+ \n",storeKey)
-	fmt.Printf("################### NewKeeper nk is %v+ \n",nk)
-
 	return Keeper{
 		storeKey:      storeKey,
 		cdc:           cdc,

diff --git a/x/erc721/keeper/msg_server.go b/x/erc721/keeper/msg_server.go
@@ -99,7 +99,6 @@ func (k Keeper) ConvertERC721(
 		return nil, err
 	}
 
-	fmt.Printf("################### erc721 : %v+,bigTokenId :%v+,ContractAddress %v+ \n", erc721, bigTokenId,msg.ContractAddress)
 	owner, err := k.QueryERC721TokenOwner(ctx, erc721, bigTokenId)
 	if err != nil {
 		return nil, err
@@ -208,8 +207,6 @@ func (k Keeper) convertNFTNativeERC721(
 	tokenID := string(k.GetNFTPairByNFTID(ctx, msg.NftId))
 	// sender := common.Address{msg.Sender}
 
-	fmt.Printf("################### convertNFTNativeERC721 0 sender %v+ ,receiver %v+, NftId %v+ \n",sender,receiver,msg.NftId)
-	// Unescrow Token and send to receiver
 	res, err := k.CallEVM(ctx, erc721, types.ModuleAddress, contract, true, "safeTransferFrom",receiver,receiver, msg.NftId)
 	if err != nil {
 		return nil, err
@@ -315,7 +312,6 @@ func (k Keeper) convertERC721NativeERC721(
 	}
 
 	// Escrow tokens on module account
-	fmt.Printf("################### convertERC721NativeERC721 1 sender %v+ ,receiver %v+, NftId %v+ \n",sender,types.ModuleAddress,msg.TokenId)
 	res, err := k.CallEVM(ctx, erc721, sender, contract, true, "safeTransferFrom", sender,types.ModuleAddress, bigTokenId)
 	if err != nil {
 		return nil, err

diff --git a/x/erc721/keeper/proposals.go b/x/erc721/keeper/proposals.go
@@ -1,7 +1,6 @@
 package keeper
 
 import (
-	"fmt"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 
@@ -86,8 +85,6 @@ func (k Keeper) CreateNFTClass(ctx sdk.Context, contract common.Address) (*nft.C
 
 	classID := types.CreateClassID(strContract)
 
- 	fmt.Printf("################### classID is %v+ \n",classID)
-	fmt.Printf("################### ctx is %v+ \n",ctx)
 	// Check if class already exists
 	if found := k.nftKeeper.HasClass(ctx, classID); found {
 		return nil, sdkerrors.Wrap(types.ErrInternalTokenPair, "class already exist")