//x/crosschain/keeper/msg_server_add_to_intx_tracker.go
func (k msgServer) AddToInTxTracker(goCtx context.Context, msg *types.MsgAddToInTxTracker) (*types.MsgAddToInTxTrackerResponse, error) {
...
		if common.IsEVMChain(msg.ChainId) {
			err = k.VerifyEVMInTxBody(ctx, msg, txBytes)
			if err != nil {
				return nil, types.ErrTxBodyVerificationFail.Wrapf(err.Error())
			}
} else {
               //@audit when ChainId is bitCoin chain, this will return an error
|>			return nil, types.ErrTxBodyVerificationFail.Wrapf(fmt.Sprintf("cannot verify inTx body for chain %d", msg.ChainId))
		}
