Expanse Byzantium update w/ correct metropolis difficulty increment d…

…ivisor (#7463)

* Byzantium Update for Expanse

Here the changes go. Hope I didnt miss anything.

* expip2 changes - update duration limit

* Fix missing EXPIP-2 fields

* Format numbers as hex

* Fix compilation errors

* Group expanse chain spec fields together

* Set metropolisDifficultyIncrementDivisor for Expanse

* Revert #7437

* Add Expanse block 900_000 hash checkpoint

ethcore/res/ethereum/expanse.json

@@ -0,0 +1,92 @@
+{
+	"name": "Expanse",
+	"dataDir": "expanse",
+	"engine": {
+		"Ethash": {
+			"params": {
+				"minimumDifficulty": "0x020000",
+				"difficultyBoundDivisor": "0x0800",
+				"difficultyIncrementDivisor": "0x3C",
+				"durationLimit": "0x3C",
+				"blockReward": "0x6f05b59d3b200000",
+				"homesteadTransition": "0x30d40",
+				"difficultyHardforkTransition": "0x59d9",
+				"difficultyHardforkBoundDivisor": "0x0200",
+				"bombDefuseTransition": "0x30d40",
+				"eip150Transition": "0x927C0",
+				"eip160Transition": "0x927C0",
+				"eip161abcTransition": "0x927C0",
+				"eip161dTransition": "0x927C0",
+				"eip100bTransition": "0xC3500",
+				"metropolisDifficultyIncrementDivisor": "0x1E",
+				"eip649Transition": "0xC3500",
+				"eip649Reward": "0x3782DACE9D900000",
+				"expip2Transition": "0xC3500",
+				"expip2DurationLimit": "0x1E"
+			}
+		}
+	},
+	"params": {
+		"gasLimitBoundDivisor": "0x0400",
+		"registrar" : "0x6c221ca53705f3497ec90ca7b84c59ae7382fc21",
+		"accountStartNonce": "0x00",
+		"maximumExtraDataSize": "0x20",
+		"minGasLimit": "0x1388",
+		"networkID": "0x1",
+		"chainID": "0x2",
+		"forkBlock": "0xDBBA0",
+		"forkCanonHash": "0x8e7bed51e24f5174090408664ac476b90b5e1199a947af7442f1ac88263fc8c7",
+		"subprotocolName": "exp",
+		"eip98Transition": "0x7fffffffffffff",
+		"eip86Transition": "0x7fffffffffffff",
+		"eip155Transition": "0x927C0",
+		"eip140Transition": "0xC3500",
+		"eip211Transition": "0xC3500",
+		"eip214Transition": "0xC3500",
+		"eip658Transition": "0xC3500"
+	},
+	"genesis": {
+		"seal": {
+			"ethereum": {
+				"nonce": "0x214652414e4b4f21",
+				"mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
+			}
+		},
+		"difficulty": "0x40000000",
+		"author": "0x93decab0cd745598860f782ac1e8f046cb99e898",
+		"timestamp": "0x00",
+		"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+		"extraData": "0x4672616e6b6f497346726565646f6d",
+		"gasLimit": "0x1388"
+	},
+	"nodes": [
+		"enode://7f335a047654f3e70d6f91312a7cf89c39704011f1a584e2698250db3d63817e74b88e26b7854111e16b2c9d0c7173c05419aeee2d0321850227b126d8b1be3f@46.101.156.249:42786",
+		"enode://df872f81e25f72356152b44cab662caf1f2e57c3a156ecd20e9ac9246272af68a2031b4239a0bc831f2c6ab34733a041464d46b3ea36dce88d6c11714446e06b@178.62.208.109:42786",
+		"enode://96d3919b903e7f5ad59ac2f73c43be9172d9d27e2771355db03fd194732b795829a31fe2ea6de109d0804786c39a807e155f065b4b94c6fce167becd0ac02383@45.55.22.34:42786",
+		"enode://5f6c625bf287e3c08aad568de42d868781e961cbda805c8397cfb7be97e229419bef9a5a25a75f97632787106bba8a7caf9060fab3887ad2cfbeb182ab0f433f@46.101.182.53:42786",
+		"enode://d33a8d4c2c38a08971ed975b750f21d54c927c0bf7415931e214465a8d01651ecffe4401e1db913f398383381413c78105656d665d83f385244ab302d6138414@128.199.183.48:42786",
+		"enode://f6f0d6b9b7d02ec9e8e4a16e38675f3621ea5e69860c739a65c1597ca28aefb3cec7a6d84e471ac927d42a1b64c1cbdefad75e7ce8872d57548ddcece20afdd1@159.203.64.95:42786"
+	],
+	"accounts": {
+		"0000000000000000000000000000000000000001": { "builtin": { "name": "ecrecover", "pricing": { "linear": { "base": 3000, "word": 0 } } } },
+		"0000000000000000000000000000000000000002": { "builtin": { "name": "sha256", "pricing": { "linear": { "base": 60, "word": 12 } } } },
+		"0000000000000000000000000000000000000003": { "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
+		"0000000000000000000000000000000000000004": { "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
+		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": "0xC3500", "pricing": { "modexp": { "divisor": 20 } } } },
+		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": "0xC3500", "pricing": { "linear": { "base": 500, "word": 0 } } } },
+		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": "0xC3500", "pricing": { "linear": { "base": 40000, "word": 0 } } } },
+		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": "0xC3500", "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"bb94f0ceb32257275b2a7a9c094c13e469b4563e": {
+			"balance": "10000000000000000000000000"
+		},
+		"15656715068ab0dbdf0ab00748a8a19e40f28192": {
+			"balance": "1000000000000000000000000"
+		},
+		"c075fa11f85bda3aaba67106226aaf086ac16f4e": {
+			"balance": "100000000000000000000000"
+		},
+		"93decab0cd745598860f782ac1e8f046cb99e898": {
+			"balance": "10000000000000000000000"
+		}
+	}
+}

ethcore/src/ethereum/ethash.rs

@@ -90,6 +90,10 @@ pub struct EthashParams {
 	pub eip649_delay: u64,
 	/// EIP-649 base reward.
 	pub eip649_reward: Option<U256>,
+	/// EXPIP-2 block height
+	pub expip2_transition: u64,
+	/// EXPIP-2 duration limit
+	pub expip2_duration_limit: u64,
 }
 
 impl From<ethjson::spec::EthashParams> for EthashParams {
@@ -118,6 +122,8 @@ impl From<ethjson::spec::EthashParams> for EthashParams {
 			eip649_transition: p.eip649_transition.map_or(u64::max_value(), Into::into),
 			eip649_delay: p.eip649_delay.map_or(DEFAULT_EIP649_DELAY, Into::into),
 			eip649_reward: p.eip649_reward.map(Into::into),
+			expip2_transition: p.expip2_transition.map_or(u64::max_value(), Into::into),
+			expip2_duration_limit: p.expip2_duration_limit.map_or(30, Into::into),
 		}
 	}
 }
@@ -355,7 +361,13 @@ impl Ethash {
 			self.ethash_params.difficulty_bound_divisor
 		};
 
-		let duration_limit = self.ethash_params.duration_limit;
+		let expip2_hardfork = header.number() >= self.ethash_params.expip2_transition;
+		let duration_limit = if expip2_hardfork {
+			self.ethash_params.expip2_duration_limit
+		} else {
+			self.ethash_params.duration_limit
+		};
+
 		let frontier_limit = self.ethash_params.homestead_transition;
 
 		let mut target = if header.number() < frontier_limit {
@@ -364,8 +376,7 @@ impl Ethash {
 			} else {
 				*parent.difficulty() + (*parent.difficulty() / difficulty_bound_divisor)
 			}
-		}
-		else {
+		} else {
 			trace!(target: "ethash", "Calculating difficulty parent.difficulty={}, header.timestamp={}, parent.timestamp={}", parent.difficulty(), header.timestamp(), parent.timestamp());
 			//block_diff = parent_diff + parent_diff // 2048 * max(1 - (block_timestamp - parent_timestamp) // 10, -99)
 			let (increment_divisor, threshold) = if header.number() < self.ethash_params.eip100b_transition {

ethcore/src/ethereum/mod.rs

@@ -65,6 +65,11 @@ pub fn new_classic<'a, T: Into<SpecParams<'a>>>(params: T) -> Spec {
 	load(params.into(), include_bytes!("../../res/ethereum/classic.json"))
 }
 
+/// Create a new Expanse mainnet chain spec.
+pub fn new_expanse<'a, T: Into<SpecParams<'a>>>(params: T) -> Spec {
+	load(params.into(), include_bytes!("../../res/ethereum/expanse.json"))
+}
+
 /// Create a new Musicoin mainnet chain spec.
 pub fn new_musicoin<'a, T: Into<SpecParams<'a>>>(params: T) -> Spec {
 	load(params.into(), include_bytes!("../../res/ethereum/musicoin.json"))

ethcore/src/tests/helpers.rs

@@ -386,5 +386,7 @@ pub fn get_default_ethash_params() -> EthashParams {
 		eip649_transition: u64::max_value(),
 		eip649_delay: 3_000_000,
 		eip649_reward: None,
+		expip2_transition: u64::max_value(),
+		expip2_duration_limit: 30,
 	}
 }

js/src/i18n/_default/settings.js

@@ -1,4 +1,4 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -25,6 +25,7 @@ export default {
     chains: {
       chain_classic: `Parity syncs to the Ethereum Classic network`,
       chain_dev: `Parity uses a local development chain`,
+      chain_expanse: `Parity syncs to the Expanse network`,
       chain_musicoin: `Parity syncs to the Musicoin network`,
       chain_foundation: `Parity syncs to the Ethereum network launched by the Ethereum Foundation`,
       chain_kovan: `Parity syncs to the Kovan test network`,

js/src/i18n/nl/settings.js

@@ -1,4 +1,4 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -25,6 +25,7 @@ export default {
     chains: {
       chain_classic: `Parity synchroniseert met het Ethereum Classic netwerk`,
       chain_dev: `Parity gebruikt een lokale ontwikkelaars chain`,
+      chain_expanse: `Parity synchroniseert met het Expanse netwerk`,
       chain_musicoin: `Parity synchroniseert met het Musicoin netwerk`,
       chain_foundation: `Parity synchroniseert met het Ethereum netwerk wat door de Ethereum Foundation is uitgebracht`,
       chain_kovan: `Parity synchroniseert met het Kovan test netwerk`,

js/src/i18n/zh-Hant-TW/settings.js

@@ -1,4 +1,4 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -29,6 +29,7 @@ export default {
     chains: {
       chain_classic: `將Parity同步至以太坊經典網路`, // Parity syncs to the Ethereum Classic network
       chain_dev: `將Parity使用一條本地開發用區塊鏈`, // Parity uses a local development chain
+      chain_expanse: `將Parity同步至Expanse網路`, // Parity syncs to the Expanse network
       chain_musicoin: `將Parity同步至Musicoin網路`, // Parity syncs to the Musicoin network
       chain_foundation: `將Parity同步至以太坊基金會發起的以太坊網路`, // Parity syncs to the Ethereum network launched by the Ethereum Foundation
       chain_kovan: `將Parity同步至Kovan測試網路`, // Parity syncs to the Kovan test network

js/src/i18n/zh/settings.js

@@ -1,4 +1,4 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -29,6 +29,7 @@ export default {
     chains: {
       chain_classic: `将Parity同步至以太坊经典网络`, // Parity syncs to the Ethereum Classic network
       chain_dev: `将Parity使用一条本地开发用区块链`, // Parity uses a local development chain
+      chain_expanse: `将Parity同步至Expanse网络`, // Parity syncs to the Expanse network
       chain_musicoin: `将Parity同步至Musicoin网络`, // Parity syncs to the Musicoin network
       chain_foundation: `将Parity同步至以太坊基金会发起的以太坊网络`, // Parity syncs to the Ethereum network launched by the Ethereum Foundation
       chain_kovan: `将Parity同步至Kovan测试网络`, // Parity syncs to the Kovan test network

json/src/spec/ethash.rs

@@ -125,6 +125,14 @@ pub struct EthashParams {
 	/// EIP-649 base reward.
 	#[serde(rename="eip649Reward")]
 	pub eip649_reward: Option<Uint>,
+
+	/// EXPIP-2 block height
+	#[serde(rename="expip2Transition")]
+	pub expip2_transition: Option<Uint>,
+
+	/// EXPIP-2 duration limit
+	#[serde(rename="expip2DurationLimit")]
+	pub expip2_duration_limit: Option<Uint>,
 }
 
 /// Ethash engine deserialization.
@@ -241,6 +249,8 @@ mod tests {
 				eip649_transition: None,
 				eip649_delay: None,
 				eip649_reward: None,
+				expip2_transition: None,
+				expip2_duration_limit: None,
 			}
 		});
 	}
@@ -287,6 +297,8 @@ mod tests {
 				eip649_transition: None,
 				eip649_delay: None,
 				eip649_reward: None,
+				expip2_transition: None,
+				expip2_duration_limit: None,
 			}
 		});
 	}

parity/cli/mod.rs

@@ -1,4 +1,4 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -290,7 +290,7 @@ usage! {
 
 			ARG arg_chain: (String) = "foundation", or |c: &Config| otry!(c.parity).chain.clone(),
 			"--chain=[CHAIN]",
-			"Specify the blockchain type. CHAIN may be either a JSON chain specification file or olympic, frontier, homestead, mainnet, morden, ropsten, classic, musicoin, testnet, kovan or dev.",
+			"Specify the blockchain type. CHAIN may be either a JSON chain specification file or olympic, frontier, homestead, mainnet, morden, ropsten, classic, expanse, musicoin, testnet, kovan or dev.",
 
 			ARG arg_keys_path: (String) = "$BASE/keys", or |c: &Config| otry!(c.parity).keys_path.clone(),
 			"--keys-path=[PATH]",

parity/params.rs

@@ -1,4 +1,4 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -34,6 +34,7 @@ pub enum SpecType {
 	Kovan,
 	Olympic,
 	Classic,
+	Expanse,
 	Musicoin,
 	Dev,
 	Custom(String),
@@ -56,6 +57,7 @@ impl str::FromStr for SpecType {
 			"ropsten" => SpecType::Ropsten,
 			"kovan" | "testnet" => SpecType::Kovan,
 			"olympic" => SpecType::Olympic,
+			"expanse" => SpecType::Expanse,
 			"musicoin" => SpecType::Musicoin,
 			"dev" => SpecType::Dev,
 			other => SpecType::Custom(other.into()),
@@ -72,6 +74,7 @@ impl fmt::Display for SpecType {
 			SpecType::Ropsten => "ropsten",
 			SpecType::Olympic => "olympic",
 			SpecType::Classic => "classic",
+			SpecType::Expanse => "expanse",
 			SpecType::Musicoin => "musicoin",
 			SpecType::Kovan => "kovan",
 			SpecType::Dev => "dev",
@@ -89,6 +92,7 @@ impl SpecType {
 			SpecType::Ropsten => Ok(ethereum::new_ropsten(params)),
 			SpecType::Olympic => Ok(ethereum::new_olympic(params)),
 			SpecType::Classic => Ok(ethereum::new_classic(params)),
+			SpecType::Expanse => Ok(ethereum::new_expanse(params)),
 			SpecType::Musicoin => Ok(ethereum::new_musicoin(params)),
 			SpecType::Kovan => Ok(ethereum::new_kovan(params)),
 			SpecType::Dev => Ok(Spec::new_instant()),
@@ -102,6 +106,7 @@ impl SpecType {
 	pub fn legacy_fork_name(&self) -> Option<String> {
 		match *self {
 			SpecType::Classic => Some("classic".to_owned()),
+			SpecType::Expanse => Some("expanse".to_owned()),
 			SpecType::Musicoin => Some("musicoin".to_owned()),
 			_ => None,
 		}
@@ -352,6 +357,7 @@ mod tests {
 		assert_eq!(format!("{}", SpecType::Morden), "morden");
 		assert_eq!(format!("{}", SpecType::Olympic), "olympic");
 		assert_eq!(format!("{}", SpecType::Classic), "classic");
+		assert_eq!(format!("{}", SpecType::Expanse), "expanse");
 		assert_eq!(format!("{}", SpecType::Musicoin), "musicoin");
 		assert_eq!(format!("{}", SpecType::Kovan), "kovan");
 		assert_eq!(format!("{}", SpecType::Dev), "dev");

rpc/src/v1/traits/parity_set.rs

@@ -1,4 +1,4 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -87,7 +87,7 @@ build_rpc_trait! {
 		#[rpc(name = "parity_setMode")]
 		fn set_mode(&self, String) -> Result<bool, Error>;
 
-		/// Set the network spec. Argument must be one of: "foundation", "ropsten", "morden", "kovan", "olympic", "classic", "dev", "musicoin" or a filename.
+		/// Set the network spec. Argument must be one of: "foundation", "ropsten", "morden", "kovan", "olympic", "classic", "dev", "expanse", "musicoin" or a filename.
 		#[rpc(name = "parity_setChain")]
 		fn set_spec_name(&self, String) -> Result<bool, Error>;