nimbus-eth2/beacon_chain/spec/presets/v0_12_2/minimal.nim

147 lines
4.9 KiB
Nim

# beacon_chain
# Copyright (c) 2018-2020 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
# This file contains constants that are part of the spec and thus subject to
# serialization and spec updates.
import
math
{.experimental: "codeReordering".} # SLOTS_PER_EPOCH is use before being defined in spec
const
# Misc
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/configs/minimal/phase0.yaml#L4
# Changed
MAX_COMMITTEES_PER_SLOT*: uint64 = 4
TARGET_COMMITTEE_SIZE*: uint64 = 4
# Unchanged
MAX_VALIDATORS_PER_COMMITTEE*: uint64 = 2048
MIN_PER_EPOCH_CHURN_LIMIT*: uint64 = 4
CHURN_LIMIT_QUOTIENT*: uint64 = 2'u64 ^ 16
# Changed
SHUFFLE_ROUND_COUNT*: uint64 = 10
# Unchanged
HYSTERESIS_QUOTIENT*: uint64 = 4
HYSTERESIS_DOWNWARD_MULTIPLIER*: uint64 = 1
HYSTERESIS_UPWARD_MULTIPLIER*: uint64 = 5
# Gwei values
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/configs/minimal/phase0.yaml#L61
# Changed
ETH1_FOLLOW_DISTANCE* {.intdefine.}: uint64 = 16 # blocks
# Unchanged
MIN_DEPOSIT_AMOUNT*: uint64 = 2'u64^0 * 10'u64^9
MAX_EFFECTIVE_BALANCE*: uint64 = 2'u64^5 * 10'u64^9
EJECTION_BALANCE*: uint64 = 2'u64^4 * 10'u64^9
EFFECTIVE_BALANCE_INCREMENT*: uint64 = 2'u64^0 * 10'u64^9
# Initial values
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/configs/minimal/phase0.yaml#L73
BLS_WITHDRAWAL_PREFIX*: byte = 0
# Time parameters
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/configs/minimal/phase0.yaml#L80
# Changed: Faster to spin up testnets, but does not give validator
# reasonable warning time for genesis
# Unchanged
SECONDS_PER_SLOT*{.intdefine.}: uint64 = 6
# Unchanged
MIN_ATTESTATION_INCLUSION_DELAY*: uint64 = 1
# Changed
SLOTS_PER_EPOCH* {.intdefine.}: uint64 = 8
# Unchanged
MIN_SEED_LOOKAHEAD*: uint64 = 1
MAX_SEED_LOOKAHEAD*: uint64 = 4
# Changed
EPOCHS_PER_ETH1_VOTING_PERIOD*: uint64 = 4
SLOTS_PER_HISTORICAL_ROOT*: uint64 = 64
# Unchanged
MIN_VALIDATOR_WITHDRAWABILITY_DELAY*: uint64 = 2'u64^8
SHARD_COMMITTEE_PERIOD*: uint64 = 64 # epochs
# Unchanged
MAX_EPOCHS_PER_CROSSLINK*: uint64 = 4
# Changed
MIN_EPOCHS_TO_INACTIVITY_PENALTY*: uint64 = 2'u64^2
# State vector lengths
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/configs/minimal/phase0.yaml#L108
# Changed
EPOCHS_PER_HISTORICAL_VECTOR*: uint64 = 64
EPOCHS_PER_SLASHINGS_VECTOR*: uint64 = 64
# Unchanged
HISTORICAL_ROOTS_LIMIT*: uint64 = 16777216
VALIDATOR_REGISTRY_LIMIT*: uint64 = 1099511627776'u64
# Reward and penalty quotients
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/configs/minimal/phase0.yaml#L120
BASE_REWARD_FACTOR*: uint64 = 2'u64^6
WHISTLEBLOWER_REWARD_QUOTIENT*: uint64 = 2'u64^9
PROPOSER_REWARD_QUOTIENT*: uint64 = 2'u64^3
INACTIVITY_PENALTY_QUOTIENT*: uint64 = 2'u64^24
MIN_SLASHING_PENALTY_QUOTIENT*: uint64 = 32 # 2^5
# Max operations per block
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/configs/minimal/phase0.yaml#L134
MAX_PROPOSER_SLASHINGS*: uint64 = 2'u64 ^ 4
MAX_ATTESTER_SLASHINGS*: uint64 = 2'u64 ^ 1
MAX_ATTESTATIONS*: uint64 = 2'u64 ^ 7
MAX_DEPOSITS*: uint64 = 2'u64 ^ 4
MAX_VOLUNTARY_EXITS*: uint64 = 2'u64 ^ 4
# Deposit contract
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/configs/minimal/phase0.yaml#L52
# Ethereum Goerli testnet
DEPOSIT_CHAIN_ID* = 5
DEPOSIT_NETWORK_ID* = 5
# Fork choice
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/configs/minimal/phase0.yaml#L32
# Changed
SAFE_SLOTS_TO_UPDATE_JUSTIFIED*: uint64 = 2
# Validators
# ---------------------------------------------------------------
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.2/configs/minimal/phase0.yaml#L38
# Unchanged
TARGET_AGGREGATORS_PER_COMMITTEE*: uint64 = 16 # validators
RANDOM_SUBNETS_PER_VALIDATOR*: uint64 = 1 # subnet
EPOCHS_PER_RANDOM_SUBNET_SUBSCRIPTION*: uint64 = 256 # epochs ~ 27 hours
SECONDS_PER_ETH1_BLOCK* {.intdefine.}: uint64 = 14 # estimate from Eth1 mainnet)