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spec.rs
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use crate::{
constants::{
EIP1559_DEFAULT_BASE_FEE_MAX_CHANGE_DENOMINATOR, EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
EIP1559_INITIAL_BASE_FEE, EMPTY_RECEIPTS, EMPTY_TRANSACTIONS, EMPTY_WITHDRAWALS,
},
holesky_nodes,
net::{goerli_nodes, mainnet_nodes, sepolia_nodes},
proofs::state_root_ref_unhashed,
revm_primitives::{address, b256},
Address, BlockNumber, ForkFilter, ForkFilterKey, ForkHash, ForkId, Genesis, Hardfork, Head,
Header, NodeRecord, SealedHeader, B256, EMPTY_OMMER_ROOT_HASH, U256,
};
use alloy_chains::{Chain, NamedChain};
use once_cell::sync::Lazy;
use serde::{Deserialize, Serialize};
use std::{
collections::BTreeMap,
fmt::{Display, Formatter},
sync::Arc,
};
/// The Ethereum mainnet spec
pub static MAINNET: Lazy<Arc<ChainSpec>> = Lazy::new(|| {
ChainSpec {
chain: Chain::mainnet(),
genesis: serde_json::from_str(include_str!("../../res/genesis/mainnet.json"))
.expect("Can't deserialize Mainnet genesis json"),
genesis_hash: Some(b256!(
"d4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3"
)),
// <https://etherscan.io/block/15537394>
paris_block_and_final_difficulty: Some((
15537394,
U256::from(58_750_003_716_598_352_816_469u128),
)),
fork_timestamps: ForkTimestamps::default().shanghai(1681338455),
hardforks: BTreeMap::from([
(Hardfork::Frontier, ForkCondition::Block(0)),
(Hardfork::Homestead, ForkCondition::Block(1150000)),
(Hardfork::Dao, ForkCondition::Block(1920000)),
(Hardfork::Tangerine, ForkCondition::Block(2463000)),
(Hardfork::SpuriousDragon, ForkCondition::Block(2675000)),
(Hardfork::Byzantium, ForkCondition::Block(4370000)),
(Hardfork::Constantinople, ForkCondition::Block(7280000)),
(Hardfork::Petersburg, ForkCondition::Block(7280000)),
(Hardfork::Istanbul, ForkCondition::Block(9069000)),
(Hardfork::MuirGlacier, ForkCondition::Block(9200000)),
(Hardfork::Berlin, ForkCondition::Block(12244000)),
(Hardfork::London, ForkCondition::Block(12965000)),
(Hardfork::ArrowGlacier, ForkCondition::Block(13773000)),
(Hardfork::GrayGlacier, ForkCondition::Block(15050000)),
(
Hardfork::Paris,
ForkCondition::TTD {
fork_block: None,
total_difficulty: U256::from(58_750_000_000_000_000_000_000_u128),
},
),
(Hardfork::Shanghai, ForkCondition::Timestamp(1681338455)),
]),
// https://etherscan.io/tx/0xe75fb554e433e03763a1560646ee22dcb74e5274b34c5ad644e7c0f619a7e1d0
deposit_contract: Some(DepositContract::new(
address!("00000000219ab540356cbb839cbe05303d7705fa"),
11052984,
b256!("649bbc62d0e31342afea4e5cd82d4049e7e1ee912fc0889aa790803be39038c5"),
)),
base_fee_params: BaseFeeParamsKind::Constant(BaseFeeParams::ethereum()),
prune_delete_limit: 3500,
snapshot_block_interval: 500_000,
}
.into()
});
/// The Goerli spec
pub static GOERLI: Lazy<Arc<ChainSpec>> = Lazy::new(|| {
ChainSpec {
chain: Chain::goerli(),
genesis: serde_json::from_str(include_str!("../../res/genesis/goerli.json"))
.expect("Can't deserialize Goerli genesis json"),
genesis_hash: Some(b256!(
"bf7e331f7f7c1dd2e05159666b3bf8bc7a8a3a9eb1d518969eab529dd9b88c1a"
)),
// <https://goerli.etherscan.io/block/7382818>
paris_block_and_final_difficulty: Some((7382818, U256::from(10_790_000))),
fork_timestamps: ForkTimestamps::default().shanghai(1678832736),
hardforks: BTreeMap::from([
(Hardfork::Frontier, ForkCondition::Block(0)),
(Hardfork::Homestead, ForkCondition::Block(0)),
(Hardfork::Dao, ForkCondition::Block(0)),
(Hardfork::Tangerine, ForkCondition::Block(0)),
(Hardfork::SpuriousDragon, ForkCondition::Block(0)),
(Hardfork::Byzantium, ForkCondition::Block(0)),
(Hardfork::Constantinople, ForkCondition::Block(0)),
(Hardfork::Petersburg, ForkCondition::Block(0)),
(Hardfork::Istanbul, ForkCondition::Block(1561651)),
(Hardfork::Berlin, ForkCondition::Block(4460644)),
(Hardfork::London, ForkCondition::Block(5062605)),
(
Hardfork::Paris,
ForkCondition::TTD { fork_block: None, total_difficulty: U256::from(10_790_000) },
),
(Hardfork::Shanghai, ForkCondition::Timestamp(1678832736)),
(Hardfork::Cancun, ForkCondition::Timestamp(1705473120)),
]),
// https://goerli.etherscan.io/tx/0xa3c07dc59bfdb1bfc2d50920fed2ef2c1c4e0a09fe2325dbc14e07702f965a78
deposit_contract: Some(DepositContract::new(
address!("ff50ed3d0ec03ac01d4c79aad74928bff48a7b2b"),
4367322,
b256!("649bbc62d0e31342afea4e5cd82d4049e7e1ee912fc0889aa790803be39038c5"),
)),
base_fee_params: BaseFeeParamsKind::Constant(BaseFeeParams::ethereum()),
prune_delete_limit: 1700,
snapshot_block_interval: 1_000_000,
}
.into()
});
/// The Sepolia spec
pub static SEPOLIA: Lazy<Arc<ChainSpec>> = Lazy::new(|| {
ChainSpec {
chain: Chain::sepolia(),
genesis: serde_json::from_str(include_str!("../../res/genesis/sepolia.json"))
.expect("Can't deserialize Sepolia genesis json"),
genesis_hash: Some(b256!(
"25a5cc106eea7138acab33231d7160d69cb777ee0c2c553fcddf5138993e6dd9"
)),
// <https://sepolia.etherscan.io/block/1450409>
paris_block_and_final_difficulty: Some((1450409, U256::from(17_000_018_015_853_232u128))),
fork_timestamps: ForkTimestamps::default().shanghai(1677557088),
hardforks: BTreeMap::from([
(Hardfork::Frontier, ForkCondition::Block(0)),
(Hardfork::Homestead, ForkCondition::Block(0)),
(Hardfork::Dao, ForkCondition::Block(0)),
(Hardfork::Tangerine, ForkCondition::Block(0)),
(Hardfork::SpuriousDragon, ForkCondition::Block(0)),
(Hardfork::Byzantium, ForkCondition::Block(0)),
(Hardfork::Constantinople, ForkCondition::Block(0)),
(Hardfork::Petersburg, ForkCondition::Block(0)),
(Hardfork::Istanbul, ForkCondition::Block(0)),
(Hardfork::MuirGlacier, ForkCondition::Block(0)),
(Hardfork::Berlin, ForkCondition::Block(0)),
(Hardfork::London, ForkCondition::Block(0)),
(
Hardfork::Paris,
ForkCondition::TTD {
fork_block: Some(1735371),
total_difficulty: U256::from(17_000_000_000_000_000u64),
},
),
(Hardfork::Shanghai, ForkCondition::Timestamp(1677557088)),
(Hardfork::Cancun, ForkCondition::Timestamp(1706655072)),
]),
// https://sepolia.etherscan.io/tx/0x025ecbf81a2f1220da6285d1701dc89fb5a956b62562ee922e1a9efd73eb4b14
deposit_contract: Some(DepositContract::new(
address!("7f02c3e3c98b133055b8b348b2ac625669ed295d"),
1273020,
b256!("649bbc62d0e31342afea4e5cd82d4049e7e1ee912fc0889aa790803be39038c5"),
)),
base_fee_params: BaseFeeParamsKind::Constant(BaseFeeParams::ethereum()),
prune_delete_limit: 1700,
snapshot_block_interval: 1_000_000,
}
.into()
});
/// The Holesky spec
pub static HOLESKY: Lazy<Arc<ChainSpec>> = Lazy::new(|| {
ChainSpec {
chain: Chain::holesky(),
genesis: serde_json::from_str(include_str!("../../res/genesis/holesky.json"))
.expect("Can't deserialize Holesky genesis json"),
genesis_hash: Some(b256!(
"b5f7f912443c940f21fd611f12828d75b534364ed9e95ca4e307729a4661bde4"
)),
paris_block_and_final_difficulty: Some((0, U256::from(1))),
fork_timestamps: ForkTimestamps::default().shanghai(1696000704),
hardforks: BTreeMap::from([
(Hardfork::Frontier, ForkCondition::Block(0)),
(Hardfork::Homestead, ForkCondition::Block(0)),
(Hardfork::Dao, ForkCondition::Block(0)),
(Hardfork::Tangerine, ForkCondition::Block(0)),
(Hardfork::SpuriousDragon, ForkCondition::Block(0)),
(Hardfork::Byzantium, ForkCondition::Block(0)),
(Hardfork::Constantinople, ForkCondition::Block(0)),
(Hardfork::Petersburg, ForkCondition::Block(0)),
(Hardfork::Istanbul, ForkCondition::Block(0)),
(Hardfork::MuirGlacier, ForkCondition::Block(0)),
(Hardfork::Berlin, ForkCondition::Block(0)),
(Hardfork::London, ForkCondition::Block(0)),
(
Hardfork::Paris,
ForkCondition::TTD { fork_block: Some(0), total_difficulty: U256::ZERO },
),
(Hardfork::Shanghai, ForkCondition::Timestamp(1696000704)),
(Hardfork::Cancun, ForkCondition::Timestamp(1707305664)),
]),
deposit_contract: Some(DepositContract::new(
address!("4242424242424242424242424242424242424242"),
0,
b256!("649bbc62d0e31342afea4e5cd82d4049e7e1ee912fc0889aa790803be39038c5"),
)),
base_fee_params: BaseFeeParamsKind::Constant(BaseFeeParams::ethereum()),
prune_delete_limit: 1700,
snapshot_block_interval: 1_000_000,
}
.into()
});
/// Dev testnet specification
///
/// Includes 20 prefunded accounts with 10_000 ETH each derived from mnemonic "test test test test
/// test test test test test test test junk".
pub static DEV: Lazy<Arc<ChainSpec>> = Lazy::new(|| {
ChainSpec {
chain: Chain::dev(),
genesis: serde_json::from_str(include_str!("../../res/genesis/dev.json"))
.expect("Can't deserialize Dev testnet genesis json"),
genesis_hash: Some(b256!(
"2f980576711e3617a5e4d83dd539548ec0f7792007d505a3d2e9674833af2d7c"
)),
paris_block_and_final_difficulty: Some((0, U256::from(0))),
fork_timestamps: ForkTimestamps::default().shanghai(0),
hardforks: BTreeMap::from([
(Hardfork::Frontier, ForkCondition::Block(0)),
(Hardfork::Homestead, ForkCondition::Block(0)),
(Hardfork::Dao, ForkCondition::Block(0)),
(Hardfork::Tangerine, ForkCondition::Block(0)),
(Hardfork::SpuriousDragon, ForkCondition::Block(0)),
(Hardfork::Byzantium, ForkCondition::Block(0)),
(Hardfork::Constantinople, ForkCondition::Block(0)),
(Hardfork::Petersburg, ForkCondition::Block(0)),
(Hardfork::Istanbul, ForkCondition::Block(0)),
(Hardfork::MuirGlacier, ForkCondition::Block(0)),
(Hardfork::Berlin, ForkCondition::Block(0)),
(Hardfork::London, ForkCondition::Block(0)),
(
Hardfork::Paris,
ForkCondition::TTD { fork_block: Some(0), total_difficulty: U256::from(0) },
),
(Hardfork::Shanghai, ForkCondition::Timestamp(0)),
]),
base_fee_params: BaseFeeParamsKind::Constant(BaseFeeParams::ethereum()),
deposit_contract: None, // TODO: do we even have?
..Default::default()
}
.into()
});
/// The Optimism Goerli spec
#[cfg(feature = "optimism")]
pub static OP_GOERLI: Lazy<Arc<ChainSpec>> = Lazy::new(|| {
ChainSpec {
chain: Chain::optimism_goerli(),
genesis: serde_json::from_str(include_str!("../../res/genesis/goerli_op.json"))
.expect("Can't deserialize Optimism Goerli genesis json"),
genesis_hash: Some(b256!(
"c1fc15cd51159b1f1e5cbc4b82e85c1447ddfa33c52cf1d98d14fba0d6354be1"
)),
fork_timestamps: ForkTimestamps::default()
.shanghai(1699981200)
.canyon(1699981200)
.cancun(1707238800)
.ecotone(1707238800),
paris_block_and_final_difficulty: Some((0, U256::from(0))),
hardforks: BTreeMap::from([
(Hardfork::Frontier, ForkCondition::Block(0)),
(Hardfork::Homestead, ForkCondition::Block(0)),
(Hardfork::Tangerine, ForkCondition::Block(0)),
(Hardfork::SpuriousDragon, ForkCondition::Block(0)),
(Hardfork::Byzantium, ForkCondition::Block(0)),
(Hardfork::Constantinople, ForkCondition::Block(0)),
(Hardfork::Petersburg, ForkCondition::Block(0)),
(Hardfork::Istanbul, ForkCondition::Block(0)),
(Hardfork::MuirGlacier, ForkCondition::Block(0)),
(Hardfork::Berlin, ForkCondition::Block(0)),
(Hardfork::London, ForkCondition::Block(0)),
(Hardfork::ArrowGlacier, ForkCondition::Block(0)),
(Hardfork::GrayGlacier, ForkCondition::Block(0)),
(
Hardfork::Paris,
ForkCondition::TTD { fork_block: Some(0), total_difficulty: U256::from(0) },
),
(Hardfork::Bedrock, ForkCondition::Block(4061224)),
(Hardfork::Regolith, ForkCondition::Timestamp(1679079600)),
(Hardfork::Shanghai, ForkCondition::Timestamp(1699981200)),
(Hardfork::Canyon, ForkCondition::Timestamp(1699981200)),
(Hardfork::Cancun, ForkCondition::Timestamp(1707238800)),
(Hardfork::Ecotone, ForkCondition::Timestamp(1707238800)),
]),
base_fee_params: BaseFeeParamsKind::Variable(
vec![
(Hardfork::London, BaseFeeParams::optimism_goerli()),
(Hardfork::Canyon, BaseFeeParams::optimism_goerli_canyon()),
]
.into(),
),
prune_delete_limit: 1700,
snapshot_block_interval: 1_000_000,
..Default::default()
}
.into()
});
/// The Base Goerli spec
#[cfg(feature = "optimism")]
pub static BASE_GOERLI: Lazy<Arc<ChainSpec>> = Lazy::new(|| {
ChainSpec {
chain: Chain::base_goerli(),
genesis: serde_json::from_str(include_str!("../../res/genesis/goerli_base.json"))
.expect("Can't deserialize Base Goerli genesis json"),
genesis_hash: Some(b256!(
"a3ab140f15ea7f7443a4702da64c10314eb04d488e72974e02e2d728096b4f76"
)),
fork_timestamps: ForkTimestamps::default()
.shanghai(1699981200)
.canyon(1699981200)
.cancun(1707238800)
.ecotone(1707238800),
paris_block_and_final_difficulty: Some((0, U256::from(0))),
hardforks: BTreeMap::from([
(Hardfork::Frontier, ForkCondition::Block(0)),
(Hardfork::Homestead, ForkCondition::Block(0)),
(Hardfork::Tangerine, ForkCondition::Block(0)),
(Hardfork::SpuriousDragon, ForkCondition::Block(0)),
(Hardfork::Byzantium, ForkCondition::Block(0)),
(Hardfork::Constantinople, ForkCondition::Block(0)),
(Hardfork::Petersburg, ForkCondition::Block(0)),
(Hardfork::Istanbul, ForkCondition::Block(0)),
(Hardfork::MuirGlacier, ForkCondition::Block(0)),
(Hardfork::Berlin, ForkCondition::Block(0)),
(Hardfork::London, ForkCondition::Block(0)),
(Hardfork::ArrowGlacier, ForkCondition::Block(0)),
(Hardfork::GrayGlacier, ForkCondition::Block(0)),
(
Hardfork::Paris,
ForkCondition::TTD { fork_block: Some(0), total_difficulty: U256::from(0) },
),
(Hardfork::Bedrock, ForkCondition::Block(0)),
(Hardfork::Regolith, ForkCondition::Timestamp(1683219600)),
(Hardfork::Shanghai, ForkCondition::Timestamp(1699981200)),
(Hardfork::Canyon, ForkCondition::Timestamp(1699981200)),
(Hardfork::Cancun, ForkCondition::Timestamp(1707238800)),
(Hardfork::Ecotone, ForkCondition::Timestamp(1707238800)),
]),
base_fee_params: BaseFeeParamsKind::Variable(
vec![
(Hardfork::London, BaseFeeParams::optimism_goerli()),
(Hardfork::Canyon, BaseFeeParams::optimism_goerli_canyon()),
]
.into(),
),
prune_delete_limit: 1700,
snapshot_block_interval: 1_000_000,
..Default::default()
}
.into()
});
/// The Base Sepolia spec
#[cfg(feature = "optimism")]
pub static BASE_SEPOLIA: Lazy<Arc<ChainSpec>> = Lazy::new(|| {
ChainSpec {
chain: Chain::base_sepolia(),
genesis: serde_json::from_str(include_str!("../../res/genesis/sepolia_base.json"))
.expect("Can't deserialize Base Sepolia genesis json"),
genesis_hash: Some(b256!(
"0dcc9e089e30b90ddfc55be9a37dd15bc551aeee999d2e2b51414c54eaf934e4"
)),
fork_timestamps: ForkTimestamps::default()
.shanghai(1699981200)
.canyon(1699981200)
.cancun(1708534800)
.ecotone(1708534800),
paris_block_and_final_difficulty: Some((0, U256::from(0))),
hardforks: BTreeMap::from([
(Hardfork::Frontier, ForkCondition::Block(0)),
(Hardfork::Homestead, ForkCondition::Block(0)),
(Hardfork::Tangerine, ForkCondition::Block(0)),
(Hardfork::SpuriousDragon, ForkCondition::Block(0)),
(Hardfork::Byzantium, ForkCondition::Block(0)),
(Hardfork::Constantinople, ForkCondition::Block(0)),
(Hardfork::Petersburg, ForkCondition::Block(0)),
(Hardfork::Istanbul, ForkCondition::Block(0)),
(Hardfork::MuirGlacier, ForkCondition::Block(0)),
(Hardfork::Berlin, ForkCondition::Block(0)),
(Hardfork::London, ForkCondition::Block(0)),
(Hardfork::ArrowGlacier, ForkCondition::Block(0)),
(Hardfork::GrayGlacier, ForkCondition::Block(0)),
(
Hardfork::Paris,
ForkCondition::TTD { fork_block: Some(0), total_difficulty: U256::from(0) },
),
(Hardfork::Bedrock, ForkCondition::Block(0)),
(Hardfork::Regolith, ForkCondition::Timestamp(0)),
(Hardfork::Shanghai, ForkCondition::Timestamp(1699981200)),
(Hardfork::Canyon, ForkCondition::Timestamp(1699981200)),
(Hardfork::Cancun, ForkCondition::Timestamp(1708534800)),
(Hardfork::Ecotone, ForkCondition::Timestamp(1708534800)),
]),
base_fee_params: BaseFeeParamsKind::Variable(
vec![
(Hardfork::London, BaseFeeParams::optimism_sepolia()),
(Hardfork::Canyon, BaseFeeParams::optimism_sepolia_canyon()),
]
.into(),
),
prune_delete_limit: 1700,
snapshot_block_interval: 1_000_000,
..Default::default()
}
.into()
});
/// The Base mainnet spec
#[cfg(feature = "optimism")]
pub static BASE_MAINNET: Lazy<Arc<ChainSpec>> = Lazy::new(|| {
ChainSpec {
chain: Chain::base_mainnet(),
genesis: serde_json::from_str(include_str!("../../res/genesis/base.json"))
.expect("Can't deserialize Base genesis json"),
genesis_hash: Some(b256!(
"f712aa9241cc24369b143cf6dce85f0902a9731e70d66818a3a5845b296c73dd"
)),
fork_timestamps: ForkTimestamps::default().shanghai(1704992401).canyon(1704992401),
paris_block_and_final_difficulty: Some((0, U256::from(0))),
hardforks: BTreeMap::from([
(Hardfork::Frontier, ForkCondition::Block(0)),
(Hardfork::Homestead, ForkCondition::Block(0)),
(Hardfork::Tangerine, ForkCondition::Block(0)),
(Hardfork::SpuriousDragon, ForkCondition::Block(0)),
(Hardfork::Byzantium, ForkCondition::Block(0)),
(Hardfork::Constantinople, ForkCondition::Block(0)),
(Hardfork::Petersburg, ForkCondition::Block(0)),
(Hardfork::Istanbul, ForkCondition::Block(0)),
(Hardfork::MuirGlacier, ForkCondition::Block(0)),
(Hardfork::Berlin, ForkCondition::Block(0)),
(Hardfork::London, ForkCondition::Block(0)),
(Hardfork::ArrowGlacier, ForkCondition::Block(0)),
(Hardfork::GrayGlacier, ForkCondition::Block(0)),
(
Hardfork::Paris,
ForkCondition::TTD { fork_block: Some(0), total_difficulty: U256::from(0) },
),
(Hardfork::Bedrock, ForkCondition::Block(0)),
(Hardfork::Regolith, ForkCondition::Timestamp(0)),
(Hardfork::Shanghai, ForkCondition::Timestamp(1704992401)),
(Hardfork::Canyon, ForkCondition::Timestamp(1704992401)),
]),
base_fee_params: BaseFeeParamsKind::Variable(
vec![
(Hardfork::London, BaseFeeParams::optimism()),
(Hardfork::Canyon, BaseFeeParams::optimism_canyon()),
]
.into(),
),
prune_delete_limit: 1700,
snapshot_block_interval: 1_000_000,
..Default::default()
}
.into()
});
/// A wrapper around [BaseFeeParams] that allows for specifying constant or dynamic EIP-1559
/// parameters based on the active [Hardfork].
#[derive(Clone, Debug, Deserialize, Serialize)]
#[serde(untagged)]
pub enum BaseFeeParamsKind {
/// Constant [BaseFeeParams]; used for chains that don't have dynamic EIP-1559 parameters
Constant(BaseFeeParams),
/// Variable [BaseFeeParams]; used for chains that have dynamic EIP-1559 parameters like
/// Optimism
Variable(ForkBaseFeeParams),
}
impl From<BaseFeeParams> for BaseFeeParamsKind {
fn from(params: BaseFeeParams) -> Self {
BaseFeeParamsKind::Constant(params)
}
}
impl From<ForkBaseFeeParams> for BaseFeeParamsKind {
fn from(params: ForkBaseFeeParams) -> Self {
BaseFeeParamsKind::Variable(params)
}
}
/// A type alias to a vector of tuples of [Hardfork] and [BaseFeeParams], sorted by [Hardfork]
/// activation order. This is used to specify dynamic EIP-1559 parameters for chains like Optimism.
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct ForkBaseFeeParams(Vec<(Hardfork, BaseFeeParams)>);
impl From<Vec<(Hardfork, BaseFeeParams)>> for ForkBaseFeeParams {
fn from(params: Vec<(Hardfork, BaseFeeParams)>) -> Self {
ForkBaseFeeParams(params)
}
}
/// BaseFeeParams contains the config parameters that control block base fee computation
#[derive(Serialize, Deserialize, Debug, Copy, Clone, PartialEq, Eq)]
pub struct BaseFeeParams {
/// The base_fee_max_change_denominator from EIP-1559
pub max_change_denominator: u64,
/// The elasticity multiplier from EIP-1559
pub elasticity_multiplier: u64,
}
impl BaseFeeParams {
/// Get the base fee parameters for Ethereum mainnet
pub const fn ethereum() -> BaseFeeParams {
BaseFeeParams {
max_change_denominator: EIP1559_DEFAULT_BASE_FEE_MAX_CHANGE_DENOMINATOR,
elasticity_multiplier: EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
}
}
/// Get the base fee parameters for optimism goerli
#[cfg(feature = "optimism")]
pub const fn optimism_goerli() -> BaseFeeParams {
BaseFeeParams {
max_change_denominator:
crate::constants::OP_GOERLI_EIP1559_DEFAULT_BASE_FEE_MAX_CHANGE_DENOMINATOR,
elasticity_multiplier:
crate::constants::OP_GOERLI_EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
}
}
/// Get the base fee parameters for optimism goerli (post Canyon)
#[cfg(feature = "optimism")]
pub const fn optimism_goerli_canyon() -> BaseFeeParams {
BaseFeeParams {
max_change_denominator:
crate::constants::OP_GOERLI_EIP1559_BASE_FEE_MAX_CHANGE_DENOMINATOR_CANYON,
elasticity_multiplier:
crate::constants::OP_GOERLI_EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
}
}
/// Get the base fee parameters for optimism sepolia
#[cfg(feature = "optimism")]
pub const fn optimism_sepolia() -> BaseFeeParams {
BaseFeeParams {
max_change_denominator:
crate::constants::OP_SEPOLIA_EIP1559_DEFAULT_BASE_FEE_MAX_CHANGE_DENOMINATOR,
elasticity_multiplier:
crate::constants::OP_SEPOLIA_EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
}
}
/// Get the base fee parameters for optimism goerli (post Canyon)
#[cfg(feature = "optimism")]
pub const fn optimism_sepolia_canyon() -> BaseFeeParams {
BaseFeeParams {
max_change_denominator:
crate::constants::OP_SEPOLIA_EIP1559_BASE_FEE_MAX_CHANGE_DENOMINATOR_CANYON,
elasticity_multiplier:
crate::constants::OP_SEPOLIA_EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
}
}
/// Get the base fee parameters for optimism mainnet
#[cfg(feature = "optimism")]
pub const fn optimism() -> BaseFeeParams {
BaseFeeParams {
max_change_denominator:
crate::constants::OP_MAINNET_EIP1559_DEFAULT_BASE_FEE_MAX_CHANGE_DENOMINATOR,
elasticity_multiplier:
crate::constants::OP_MAINNET_EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
}
}
/// Get the base fee parameters for optimism mainnet (post Canyon)
#[cfg(feature = "optimism")]
pub const fn optimism_canyon() -> BaseFeeParams {
BaseFeeParams {
max_change_denominator:
crate::constants::OP_MAINNET_EIP1559_BASE_FEE_MAX_CHANGE_DENOMINATOR_CANYON,
elasticity_multiplier:
crate::constants::OP_MAINNET_EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
}
}
}
/// An Ethereum chain specification.
///
/// A chain specification describes:
///
/// - Meta-information about the chain (the chain ID)
/// - The genesis block of the chain ([`Genesis`])
/// - What hardforks are activated, and under which conditions
#[derive(Serialize, Deserialize, Debug, Clone)]
pub struct ChainSpec {
/// The chain ID
pub chain: Chain,
/// The hash of the genesis block.
///
/// This acts as a small cache for known chains. If the chain is known, then the genesis hash
/// is also known ahead of time, and this will be `Some`.
#[serde(skip, default)]
pub genesis_hash: Option<B256>,
/// The genesis block
pub genesis: Genesis,
/// The block at which [Hardfork::Paris] was activated and the final difficulty at this block.
#[serde(skip, default)]
pub paris_block_and_final_difficulty: Option<(u64, U256)>,
/// Timestamps of various hardforks
///
/// This caches entries in `hardforks` map
#[serde(skip, default)]
pub fork_timestamps: ForkTimestamps,
/// The active hard forks and their activation conditions
pub hardforks: BTreeMap<Hardfork, ForkCondition>,
/// The deposit contract deployed for PoS
#[serde(skip, default)]
pub deposit_contract: Option<DepositContract>,
/// The parameters that configure how a block's base fee is computed
pub base_fee_params: BaseFeeParamsKind,
/// The delete limit for pruner, per block. In the actual pruner run it will be multiplied by
/// the amount of blocks between pruner runs to account for the difference in amount of new
/// data coming in.
#[serde(default)]
pub prune_delete_limit: usize,
/// The block interval for creating snapshots. Each snapshot will have that much blocks in it.
pub snapshot_block_interval: u64,
}
impl Default for ChainSpec {
fn default() -> ChainSpec {
ChainSpec {
chain: Default::default(),
genesis_hash: Default::default(),
genesis: Default::default(),
paris_block_and_final_difficulty: Default::default(),
fork_timestamps: Default::default(),
hardforks: Default::default(),
deposit_contract: Default::default(),
base_fee_params: BaseFeeParamsKind::Constant(BaseFeeParams::ethereum()),
prune_delete_limit: MAINNET.prune_delete_limit,
snapshot_block_interval: Default::default(),
}
}
}
impl ChainSpec {
/// Get information about the chain itself
pub fn chain(&self) -> Chain {
self.chain
}
/// Returns `true` if this chain contains Optimism configuration.
#[inline]
pub fn is_optimism(&self) -> bool {
self.chain.is_optimism()
}
/// Get the genesis block specification.
///
/// To get the header for the genesis block, use [`Self::genesis_header`] instead.
pub fn genesis(&self) -> &Genesis {
&self.genesis
}
/// Get the header for the genesis block.
pub fn genesis_header(&self) -> Header {
// If London is activated at genesis, we set the initial base fee as per EIP-1559.
let base_fee_per_gas = self.initial_base_fee();
// If shanghai is activated, initialize the header with an empty withdrawals hash, and
// empty withdrawals list.
let withdrawals_root =
(self.fork(Hardfork::Shanghai).active_at_timestamp(self.genesis.timestamp))
.then_some(EMPTY_WITHDRAWALS);
// If Cancun is activated at genesis, we set:
// * parent beacon block root to 0x0
// * blob gas used to provided genesis or 0x0
// * excess blob gas to provided genesis or 0x0
let (parent_beacon_block_root, blob_gas_used, excess_blob_gas) =
if self.fork(Hardfork::Cancun).active_at_timestamp(self.genesis.timestamp) {
let blob_gas_used = self.genesis.blob_gas_used.unwrap_or(0);
let excess_blob_gas = self.genesis.excess_blob_gas.unwrap_or(0);
(Some(B256::ZERO), Some(blob_gas_used), Some(excess_blob_gas))
} else {
(None, None, None)
};
Header {
parent_hash: B256::ZERO,
number: 0,
transactions_root: EMPTY_TRANSACTIONS,
ommers_hash: EMPTY_OMMER_ROOT_HASH,
receipts_root: EMPTY_RECEIPTS,
logs_bloom: Default::default(),
gas_limit: self.genesis.gas_limit,
difficulty: self.genesis.difficulty,
nonce: self.genesis.nonce,
extra_data: self.genesis.extra_data.clone(),
state_root: state_root_ref_unhashed(&self.genesis.alloc),
timestamp: self.genesis.timestamp,
mix_hash: self.genesis.mix_hash,
beneficiary: self.genesis.coinbase,
gas_used: Default::default(),
base_fee_per_gas,
withdrawals_root,
parent_beacon_block_root,
blob_gas_used,
excess_blob_gas,
}
}
/// Get the sealed header for the genesis block.
pub fn sealed_genesis_header(&self) -> SealedHeader {
SealedHeader::new(self.genesis_header(), self.genesis_hash())
}
/// Get the initial base fee of the genesis block.
pub fn initial_base_fee(&self) -> Option<u64> {
// If the base fee is set in the genesis block, we use that instead of the default.
let genesis_base_fee = self.genesis.base_fee_per_gas.unwrap_or(EIP1559_INITIAL_BASE_FEE);
// If London is activated at genesis, we set the initial base fee as per EIP-1559.
(self.fork(Hardfork::London).active_at_block(0)).then_some(genesis_base_fee)
}
/// Get the [BaseFeeParams] for the chain at the given timestamp.
pub fn base_fee_params(&self, timestamp: u64) -> BaseFeeParams {
match self.base_fee_params {
BaseFeeParamsKind::Constant(bf_params) => bf_params,
BaseFeeParamsKind::Variable(ForkBaseFeeParams { 0: ref bf_params }) => {
// Walk through the base fee params configuration in reverse order, and return the
// first one that corresponds to a hardfork that is active at the
// given timestamp.
for (fork, params) in bf_params.iter().rev() {
if self.is_fork_active_at_timestamp(*fork, timestamp) {
return *params
}
}
bf_params.first().map(|(_, params)| *params).unwrap_or(BaseFeeParams::ethereum())
}
}
}
/// Get the hash of the genesis block.
pub fn genesis_hash(&self) -> B256 {
if let Some(hash) = self.genesis_hash {
hash
} else {
self.genesis_header().hash_slow()
}
}
/// Get the timestamp of the genesis block.
pub fn genesis_timestamp(&self) -> u64 {
self.genesis.timestamp
}
/// Returns the final total difficulty if the Paris hardfork is known.
pub fn get_final_paris_total_difficulty(&self) -> Option<U256> {
self.paris_block_and_final_difficulty.map(|(_, final_difficulty)| final_difficulty)
}
/// Returns the final total difficulty if the given block number is after the Paris hardfork.
///
/// Note: technically this would also be valid for the block before the paris upgrade, but this
/// edge case is omitted here.
#[inline]
pub fn final_paris_total_difficulty(&self, block_number: u64) -> Option<U256> {
self.paris_block_and_final_difficulty.and_then(|(activated_at, final_difficulty)| {
if block_number >= activated_at {
Some(final_difficulty)
} else {
None
}
})
}
/// Get the fork filter for the given hardfork
pub fn hardfork_fork_filter(&self, fork: Hardfork) -> Option<ForkFilter> {
match self.fork(fork) {
ForkCondition::Never => None,
_ => Some(self.fork_filter(self.satisfy(self.fork(fork)))),
}
}
/// Returns the forks in this specification and their activation conditions.
pub fn hardforks(&self) -> &BTreeMap<Hardfork, ForkCondition> {
&self.hardforks
}
/// Get the fork id for the given hardfork.
#[inline]
pub fn hardfork_fork_id(&self, fork: Hardfork) -> Option<ForkId> {
match self.fork(fork) {
ForkCondition::Never => None,
_ => Some(self.fork_id(&self.satisfy(self.fork(fork)))),
}
}
/// Convenience method to get the fork id for [Hardfork::Shanghai] from a given chainspec.
#[inline]
pub fn shanghai_fork_id(&self) -> Option<ForkId> {
self.hardfork_fork_id(Hardfork::Shanghai)
}
/// Convenience method to get the fork id for [Hardfork::Cancun] from a given chainspec.
#[inline]
pub fn cancun_fork_id(&self) -> Option<ForkId> {
self.hardfork_fork_id(Hardfork::Cancun)
}
/// Get the fork condition for the given fork.
pub fn fork(&self, fork: Hardfork) -> ForkCondition {
self.hardforks.get(&fork).copied().unwrap_or(ForkCondition::Never)
}
/// Get an iterator of all hardforks with their respective activation conditions.
pub fn forks_iter(&self) -> impl Iterator<Item = (Hardfork, ForkCondition)> + '_ {
self.hardforks.iter().map(|(f, b)| (*f, *b))
}
/// Convenience method to check if a fork is active at a given timestamp.
#[inline]
pub fn is_fork_active_at_timestamp(&self, fork: Hardfork, timestamp: u64) -> bool {
self.fork(fork).active_at_timestamp(timestamp)
}
/// Convenience method to check if [Hardfork::Shanghai] is active at a given timestamp.
#[inline]
pub fn is_shanghai_active_at_timestamp(&self, timestamp: u64) -> bool {
self.fork_timestamps
.shanghai
.map(|shanghai| timestamp >= shanghai)
.unwrap_or_else(|| self.is_fork_active_at_timestamp(Hardfork::Shanghai, timestamp))
}
/// Convenience method to check if [Hardfork::Cancun] is active at a given timestamp.
#[inline]
pub fn is_cancun_active_at_timestamp(&self, timestamp: u64) -> bool {
self.fork_timestamps
.cancun
.map(|cancun| timestamp >= cancun)
.unwrap_or_else(|| self.is_fork_active_at_timestamp(Hardfork::Cancun, timestamp))
}
/// Convenience method to check if [Hardfork::Homestead] is active at a given block number.
#[inline]
pub fn is_homestead_active_at_block(&self, block_number: u64) -> bool {
self.fork(Hardfork::Homestead).active_at_block(block_number)
}
/// Creates a [`ForkFilter`] for the block described by [Head].
pub fn fork_filter(&self, head: Head) -> ForkFilter {
let forks = self.forks_iter().filter_map(|(_, condition)| {
// We filter out TTD-based forks w/o a pre-known block since those do not show up in the
// fork filter.
Some(match condition {
ForkCondition::Block(block) => ForkFilterKey::Block(block),
ForkCondition::Timestamp(time) => ForkFilterKey::Time(time),
ForkCondition::TTD { fork_block: Some(block), .. } => ForkFilterKey::Block(block),
_ => return None,
})
});
ForkFilter::new(head, self.genesis_hash(), self.genesis_timestamp(), forks)
}
/// Compute the [`ForkId`] for the given [`Head`] folowing eip-6122 spec
pub fn fork_id(&self, head: &Head) -> ForkId {
let mut forkhash = ForkHash::from(self.genesis_hash());
let mut current_applied = 0;
// handle all block forks before handling timestamp based forks. see: https://eips.ethereum.org/EIPS/eip-6122
for (_, cond) in self.forks_iter() {
// handle block based forks and the sepolia merge netsplit block edge case (TTD
// ForkCondition with Some(block))
if let ForkCondition::Block(block) |
ForkCondition::TTD { fork_block: Some(block), .. } = cond
{
if cond.active_at_head(head) {
if block != current_applied {
forkhash += block;
current_applied = block;
}
} else {
// we can return here because this block fork is not active, so we set the
// `next` value
return ForkId { hash: forkhash, next: block }
}
}
}
// timestamp are ALWAYS applied after the merge.
//
// this filter ensures that no block-based forks are returned
for timestamp in self.forks_iter().filter_map(|(_, cond)| {
cond.as_timestamp().filter(|time| time > &self.genesis.timestamp)
}) {
let cond = ForkCondition::Timestamp(timestamp);
if cond.active_at_head(head) {
if timestamp != current_applied {
forkhash += timestamp;
current_applied = timestamp;
}
} else {
// can safely return here because we have already handled all block forks and
// have handled all active timestamp forks, and set the next value to the
// timestamp that is known but not active yet
return ForkId { hash: forkhash, next: timestamp }
}
}
ForkId { hash: forkhash, next: 0 }
}
/// An internal helper function that returns a head block that satisfies a given Fork condition.
pub(crate) fn satisfy(&self, cond: ForkCondition) -> Head {
match cond {
ForkCondition::Block(number) => Head { number, ..Default::default() },
ForkCondition::Timestamp(timestamp) => {
// to satisfy every timestamp ForkCondition, we find the last ForkCondition::Block
// if one exists, and include its block_num in the returned Head
if let Some(last_block_num) = self.last_block_fork_before_merge_or_timestamp() {
return Head { timestamp, number: last_block_num, ..Default::default() }
}
Head { timestamp, ..Default::default() }
}
ForkCondition::TTD { total_difficulty, .. } => {
Head { total_difficulty, ..Default::default() }
}
ForkCondition::Never => unreachable!(),
}
}
/// An internal helper function that returns the block number of the last block-based
/// fork that occurs before any existing TTD (merge)/timestamp based forks.
///
/// Note: this returns None if the ChainSpec is not configured with a TTD/Timestamp fork.
pub(crate) fn last_block_fork_before_merge_or_timestamp(&self) -> Option<u64> {
let mut hardforks_iter = self.forks_iter().peekable();
while let Some((_, curr_cond)) = hardforks_iter.next() {
if let Some((_, next_cond)) = hardforks_iter.peek() {
// peek and find the first occurence of ForkCondition::TTD (merge) , or in
// custom ChainSpecs, the first occurence of
// ForkCondition::Timestamp. If curr_cond is ForkCondition::Block at
// this point, which it should be in most "normal" ChainSpecs,
// return its block_num
match next_cond {
ForkCondition::TTD { fork_block, .. } => {
// handle Sepolia merge netsplit case
if fork_block.is_some() {
return *fork_block
}
// ensure curr_cond is indeed ForkCondition::Block and return block_num
if let ForkCondition::Block(block_num) = curr_cond {
return Some(block_num)
}
}
ForkCondition::Timestamp(_) => {
// ensure curr_cond is indeed ForkCondition::Block and return block_num
if let ForkCondition::Block(block_num) = curr_cond {
return Some(block_num)
}
}
ForkCondition::Block(_) | ForkCondition::Never => continue,
}
}
}
None
}
/// Build a chainspec using [`ChainSpecBuilder`]
pub fn builder() -> ChainSpecBuilder {
ChainSpecBuilder::default()
}
/// Returns the known bootnode records for the given chain.
pub fn bootnodes(&self) -> Option<Vec<NodeRecord>> {
use NamedChain as C;
let chain = self.chain;
match chain.try_into().ok()? {
C::Mainnet => Some(mainnet_nodes()),
C::Goerli => Some(goerli_nodes()),
C::Sepolia => Some(sepolia_nodes()),
C::Holesky => Some(holesky_nodes()),
_ => None,
}
}
}
impl From<Genesis> for ChainSpec {
fn from(genesis: Genesis) -> Self {