diff --git a/Cargo.lock b/Cargo.lock
index 9eb102625..127534f56 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -599,8 +599,8 @@ dependencies = [
 ]
 
 [[package]]
-name = "darwinia-poc2"
-version = "0.2.2"
+name = "darwinia-crayfish"
+version = "0.3.0"
 dependencies = [
  "ctrlc 3.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fork-tree 2.0.0 (git+https://github.com/paritytech/substrate.git)",
diff --git a/Cargo.toml b/Cargo.toml
index a86c3b046..77582ea40 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -66,9 +66,9 @@ members = [
 exclude = ["node/runtime/wasm"]
 
 [package]
-authors = ['Parity Technologies <admin@parity.io>']
+authors = ['Darwinia Network <hello@darwinia.network>']
 build = 'build.rs'
 edition = '2018'
-name = 'darwinia-poc2'
-version = '0.2.2'
+name = 'darwinia-crayfish'
+version = '0.3.0'
 
diff --git a/node/cli/src/chain_spec.rs b/node/cli/src/chain_spec.rs
index 02c540a07..14e8dc087 100644
--- a/node/cli/src/chain_spec.rs
+++ b/node/cli/src/chain_spec.rs
@@ -305,8 +305,11 @@ fn crayfish_config_genesis() -> GenesisConfig {
             get_authority_keys_from_seed("Alice"),
             get_authority_keys_from_seed("Bob"),
         ],
-        get_account_id_from_seed("Alice"),
-        None,
+        hex!["5225c14bd888f6f623d4c6fb283b3b6bbb76560151f6dbf3476dc2b60c24c476"].unchecked_into(),
+        Some(vec![
+            // tony
+            hex!["12d5e8af67fc5c08ed231619d9210ecad2c665ff5d72e5948e56e82a0553f86b"].unchecked_into()
+        ]),
         false,
     )
 }
@@ -336,7 +339,7 @@ pub fn crayfish_testnet_genesis(
         ]
     });
 
-    const ENDOWMENT: Balance = 10_000_000 * COIN;
+    const ENDOWMENT: Balance = 100_000_000 * COIN;
     const STASH: Balance = 100 * COIN;
 
     GenesisConfig {
@@ -348,16 +351,16 @@ pub fn crayfish_testnet_genesis(
             ids: endowed_accounts.clone(),
         }),
         balances: Some(BalancesConfig {
-            balances: endowed_accounts.iter().map(|k| (k.clone(), ENDOWMENT)).collect(),
-            vesting: vec![],
-        }),
-        kton: Some(KtonConfig {
             balances: endowed_accounts.iter().cloned()
-                .map(|k| (k, ENDOWMENT))
+                .map(|k| (k, 18 * ENDOWMENT))
                 .chain(initial_authorities.iter().map(|x| (x.0.clone(), ENDOWMENT)))
                 .collect(),
             vesting: vec![],
         }),
+        kton: Some(KtonConfig {
+            balances: vec![],
+            vesting: vec![],
+        }),
         session: Some(SessionConfig {
             validators: initial_authorities.iter().map(|x| x.1.clone()).collect(),
             keys: initial_authorities.iter().map(|x| (x.1.clone(), SessionKeys(x.2.clone(), x.2.clone()))).collect::<Vec<_>>(),
@@ -367,10 +370,10 @@ pub fn crayfish_testnet_genesis(
             // TODO: ready for hacking
             current_era_total_reward: 80_000_000 * COIN / 63720,
             minimum_validator_count: 1,
-            validator_count: 3,
+            validator_count: 30,
             offline_slash: Perbill::from_parts(1_000_000),
             session_reward: Perbill::from_percent(90),
-            offline_slash_grace: 2,
+            offline_slash_grace: 4,
             stakers: initial_authorities.iter().map(|x| (x.0.clone(), x.1.clone(), STASH, StakerStatus::Validator)).collect(),
             invulnerables: initial_authorities.iter().map(|x| x.1.clone()).collect(),
         }),
@@ -428,7 +431,7 @@ pub fn local_testnet_config() -> ChainSpec {
 
 /// c￿rayfish testnet config (multivalidator Alice + Bob)
 pub fn crayfish_testnet_config() -> ChainSpec {
-    ChainSpec::from_genesis("Crayfish Testnet", "crayfish_testnet", crayfish_config_genesis, vec![], None, None, None, token_properties())
+    ChainSpec::from_genesis("Crayfish Testnet", "crayfish_testnet", crayfish_config_genesis, vec![], None, Some("DAR"), None, token_properties())
 }
 
 #[cfg(test)]
diff --git a/node/cli/src/lib.rs b/node/cli/src/lib.rs
index c0d2a36f1..bf03e8876 100644
--- a/node/cli/src/lib.rs
+++ b/node/cli/src/lib.rs
@@ -132,9 +132,9 @@ impl ChainSpec {
 		match s {
 			"dev" => Some(ChainSpec::Development),
 			"local" => Some(ChainSpec::LocalTestnet),
-			"" | "fir" | "flaming-fir" => Some(ChainSpec::FlamingFir),
+			"" | "crayfish" => Some(ChainSpec::CrayfishTestnet),
+			"flaming-fir" => Some(ChainSpec::FlamingFir),
 			"staging" => Some(ChainSpec::StagingTestnet),
-			"crayfish" => Some(ChainSpec::CrayfishTestnet),
 			_ => None,
 		}
 	}
@@ -158,7 +158,7 @@ pub fn run<I, T, E>(args: I, exit: E, version: cli::VersionInfo) -> error::Resul
 		|exit, _cli_args, _custom_args, config| {
 			info!("{}", version.name);
 			info!("  version {}", config.full_version());
-			info!("  by Parity Technologies, 2017-2019");
+			info!("  by Darwinia Network, 2017-2019");
 			info!("Chain specification: {}", config.chain_spec.name());
 			info!("Node name: {}", config.name);
 			info!("Roles: {:?}", config.roles);
diff --git a/node/runtime/src/lib.rs b/node/runtime/src/lib.rs
index b8142a9f8..6c928bc9d 100644
--- a/node/runtime/src/lib.rs
+++ b/node/runtime/src/lib.rs
@@ -182,11 +182,11 @@ impl timestamp::Trait for Runtime {
 }
 
 parameter_types! {
-	pub const ExistentialDeposit: Balance = 1 * NANO;
-	pub const TransferFee: Balance = 1 * NANO;
-	pub const CreationFee: Balance = 1 * NANO;
-	pub const TransactionBaseFee: Balance = 1 * NANO;
-	pub const TransactionByteFee: Balance = 1 * NANO;
+	pub const ExistentialDeposit: Balance = 1 * MICRO;
+	pub const TransferFee: Balance = 1 * MILLI;
+	pub const CreationFee: Balance = 1 * MILLI;
+	pub const TransactionBaseFee: Balance = 1 * MILLI;
+	pub const TransactionByteFee: Balance = 1 * MICRO;
 }
 
 type SessionHandlers = (Grandpa, Aura);
@@ -228,7 +228,8 @@ impl session::Trait for Runtime {
 
 parameter_types! {
 	pub const SessionsPerEra: session::SessionIndex = 5;
-	pub const BondingDuration: staking::EraIndex = 2;
+	// about 14 days
+	pub const BondingDuration: staking::EraIndex = 4032;
 	// 365 days * 24 hours * 60 miutes / 5 minutes
 	pub const ErasPerEpoch: staking::ErasNums = 63720;
 }