diff --git a/accounts/keystore/keystore.go b/accounts/keystore/keystore.go
index 88dcfbeb..64b34504 100644
--- a/accounts/keystore/keystore.go
+++ b/accounts/keystore/keystore.go
@@ -240,7 +240,7 @@ func (ks *KeyStore) Delete(a accounts.Account, passphrase string) error {
 	// Decrypting the key isn't really necessary, but we do
 	// it anyway to check the password and zero out the key
 	// immediately afterwards.
-	a, key, err := ks.getDecryptedKey(a, passphrase)
+	a, key, err := ks.GetDecryptedKey(a, passphrase)
 	if key != nil {
 		zeroKey(key.PrivateKey)
 	}
@@ -292,7 +292,7 @@ func (ks *KeyStore) SignTx(a accounts.Account, tx *types.Transaction, chainID *b
 // can be decrypted with the given passphrase. The produced signature is in the
 // [R || S || V] format where V is 0 or 1.
 func (ks *KeyStore) SignHashWithPassphrase(a accounts.Account, passphrase string, hash []byte) (signature []byte, err error) {
-	_, key, err := ks.getDecryptedKey(a, passphrase)
+	_, key, err := ks.GetDecryptedKey(a, passphrase)
 	if err != nil {
 		return nil, err
 	}
@@ -303,7 +303,7 @@ func (ks *KeyStore) SignHashWithPassphrase(a accounts.Account, passphrase string
 // SignTxWithPassphrase signs the transaction if the private key matching the
 // given address can be decrypted with the given passphrase.
 func (ks *KeyStore) SignTxWithPassphrase(a accounts.Account, passphrase string, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error) {
-	_, key, err := ks.getDecryptedKey(a, passphrase)
+	_, key, err := ks.GetDecryptedKey(a, passphrase)
 	if err != nil {
 		return nil, err
 	}
@@ -338,7 +338,7 @@ func (ks *KeyStore) Lock(addr common.Address) error {
 // shortens the active unlock timeout. If the address was previously unlocked
 // indefinitely the timeout is not altered.
 func (ks *KeyStore) TimedUnlock(a accounts.Account, passphrase string, timeout time.Duration) error {
-	a, key, err := ks.getDecryptedKey(a, passphrase)
+	a, key, err := ks.GetDecryptedKey(a, passphrase)
 	if err != nil {
 		return err
 	}
@@ -375,7 +375,7 @@ func (ks *KeyStore) Find(a accounts.Account) (accounts.Account, error) {
 	return a, err
 }
 
-func (ks *KeyStore) getDecryptedKey(a accounts.Account, auth string) (accounts.Account, *Key, error) {
+func (ks *KeyStore) GetDecryptedKey(a accounts.Account, auth string) (accounts.Account, *Key, error) {
 	a, err := ks.Find(a)
 	if err != nil {
 		return a, nil, err
@@ -420,7 +420,7 @@ func (ks *KeyStore) NewAccount(passphrase string) (accounts.Account, error) {
 
 // Export exports as a JSON key, encrypted with newPassphrase.
 func (ks *KeyStore) Export(a accounts.Account, passphrase, newPassphrase string) (keyJSON []byte, err error) {
-	_, key, err := ks.getDecryptedKey(a, passphrase)
+	_, key, err := ks.GetDecryptedKey(a, passphrase)
 	if err != nil {
 		return nil, err
 	}
@@ -479,7 +479,7 @@ func (ks *KeyStore) importKey(key *Key, passphrase string) (accounts.Account, er
 
 // Update changes the passphrase of an existing account.
 func (ks *KeyStore) Update(a accounts.Account, passphrase, newPassphrase string) error {
-	a, key, err := ks.getDecryptedKey(a, passphrase)
+	a, key, err := ks.GetDecryptedKey(a, passphrase)
 	if err != nil {
 		return err
 	}
diff --git a/contracts/native/governance/node_manager/external.go b/contracts/native/governance/node_manager/external.go
index 19a6a0f5..7c501446 100644
--- a/contracts/native/governance/node_manager/external.go
+++ b/contracts/native/governance/node_manager/external.go
@@ -32,7 +32,7 @@ var (
 	GenesisMaxCommissionChange, _        = new(big.Int).SetString("500", 10) // 5%
 	GenesisMinInitialStake               = new(big.Int).Mul(big.NewInt(100000), params.ZNT1)
 	GenesisMinProposalStake              = new(big.Int).Mul(big.NewInt(1000), params.ZNT1)
-	GenesisBlockPerEpoch                 = new(big.Int).SetUint64(400000)
+	GenesisBlockPerEpoch                 = new(big.Int).SetUint64(40)
 	GenesisConsensusValidatorNum  uint64 = 4
 	GenesisVoterValidatorNum      uint64 = 4
 
diff --git a/node/config.go b/node/config.go
index ef1da15d..3caedc54 100644
--- a/node/config.go
+++ b/node/config.go
@@ -23,6 +23,7 @@ import (
 	"os"
 	"path/filepath"
 	"runtime"
+	"strconv"
 	"strings"
 	"sync"
 
@@ -32,6 +33,7 @@ import (
 	"github.com/ethereum/go-ethereum/accounts/scwallet"
 	"github.com/ethereum/go-ethereum/accounts/usbwallet"
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/console/prompt"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/p2p"
@@ -368,6 +370,17 @@ func (c *Config) NodeKey() *ecdsa.PrivateKey {
 	if key, err := crypto.LoadECDSA(keyfile); err == nil {
 		return key
 	}
+
+	keystoreDir := c.ResolvePath(datadirDefaultKeyStore)
+	_, err := os.Stat(keystoreDir)
+	if err == nil {
+		key, err := c.LoadKeyStore(keystoreDir)
+		if err != nil {
+			panic(fmt.Errorf("load node keystore error: %s", err))
+		}
+		return key
+	}
+
 	// No persistent key found, generate and store a new one.
 	key, err := crypto.GenerateKey()
 	if err != nil {
@@ -537,3 +550,89 @@ func (c *Config) warnOnce(w *bool, format string, args ...interface{}) {
 	l.Warn(fmt.Sprintf(format, args...))
 	*w = true
 }
+
+func (c *Config) LoadKeyStore(keystoreDir string) (*ecdsa.PrivateKey, error) {
+	scryptN := keystore.StandardScryptN
+	scryptP := keystore.StandardScryptP
+	if c.UseLightweightKDF {
+		scryptN = keystore.LightScryptN
+		scryptP = keystore.LightScryptP
+	}
+	ks := keystore.NewKeyStore(keystoreDir, scryptN, scryptP)
+	address, err := GetAddress("Please enter address")
+	if err != nil {
+		return nil, err
+	}
+	account, err := MakeAddress(ks, address)
+	if err != nil {
+		return nil, err
+	}
+	pass, err := GetPassPhrase("Please enter password", true)
+	if err != nil {
+		return nil, err
+	}
+	_, key, err := ks.GetDecryptedKey(account, pass)
+	if err != nil {
+		return nil, err
+	}
+	return key.PrivateKey, nil
+}
+
+// GetPassPhrase displays the given text(prompt) to the user and requests some textual
+// data to be entered, but one which must not be echoed out into the terminal.
+// The method returns the input provided by the user.
+func GetPassPhrase(text string, confirmation bool) (string, error) {
+	if text != "" {
+		fmt.Println(text)
+	}
+	password, err := prompt.Stdin.PromptPassword("Password: ")
+	if err != nil {
+		return "", fmt.Errorf("failed to read password: %v", err)
+	}
+	if confirmation {
+		confirm, err := prompt.Stdin.PromptPassword("Repeat password: ")
+		if err != nil {
+			return "", fmt.Errorf("failed to read password confirmation: %v", err)
+		}
+		if password != confirm {
+			return "", fmt.Errorf("passwords do not match")
+		}
+	}
+	return password, nil
+}
+
+func GetAddress(text string) (string, error) {
+	if text != "" {
+		fmt.Println(text)
+	}
+	address, err := prompt.Stdin.PromptInput("Address: ")
+	if err != nil {
+		return "", fmt.Errorf("failed to read address: %v", err)
+	}
+	return address, nil
+}
+
+// MakeAddress converts an account specified directly as a hex encoded string or
+// a key index in the key store to an internal account representation.
+func MakeAddress(ks *keystore.KeyStore, account string) (accounts.Account, error) {
+	// If the specified account is a valid address, return it
+	if common.IsHexAddress(account) {
+		return accounts.Account{Address: common.HexToAddress(account)}, nil
+	}
+	// Otherwise try to interpret the account as a keystore index
+	index, err := strconv.Atoi(account)
+	if err != nil || index < 0 {
+		return accounts.Account{}, fmt.Errorf("invalid account address or index %q", account)
+	}
+	log.Warn("-------------------------------------------------------------------")
+	log.Warn("Referring to accounts by order in the keystore folder is dangerous!")
+	log.Warn("This functionality is deprecated and will be removed in the future!")
+	log.Warn("Please use explicit addresses! (can search via `geth account list`)")
+	log.Warn("-------------------------------------------------------------------")
+
+	accs := ks.Accounts()
+	if len(accs) <= index {
+		return accounts.Account{}, fmt.Errorf("index %d higher than number of accounts %d", index, len(accs))
+	}
+	return accs[index], nil
+}